sdsvtadmin

It varies greatly depending on the frame rate of the USB camera.

If you use the viewer software that comes with our DN series, the actual measured frame rate will be displayed at the bottom.
(This is an actual value, not a theoretical value.)

In the example above, the actual frame rate is 41.94 frame/sec.

Approximately 90% of this value will be the maximum number of sheets that can be imported.

41.94×0.9=37.7. In this case, it is possible to save up to 37 images/sec.

However, two conditions are required:
・There is no count up in the bad frame (blue circle) above.
・The delay time below must be 0ms.

You can increase the number of images you can capture by increasing fps.

・Lower resolution
・Increase the clock speed (as long as bad frames do not occur)
・Change USB2 to USB3

External trigger voltage specifications
・Input voltage is 3.3V to 24V. 　
・Please set the input pulse width to 5.1μsec or more.
・The delay from inputting an external trigger to starting exposure is several μsec.

How to display images in PictureBox instead of in a separate window (when using the included SDK)

If you use the SDK sample program as is, the video will be displayed in a separate window.
If you want to display it in a PictureBox within a Form, please refer to the page below in the API manual.

int iCube SDK_Start (int nCamIndex, HWND ImgHandle, bool Preview, bool Callback)

In the above function, the image will be displayed on the PictureBox by using the PictureBox handle in HWND ImgHandle.

Example:
DDX_Control(pDX, IDC_PIC, m_pic);
nStat=ICubeSDK_Start(g_iCurrentCam,m_pic,true,true);

Display an image to fit the size of the PictureBox:
Example:
DISP_PROPERTY disp_prop;
ICubeSDK_SetDisplayMode(nCamIndex,DISPLAY_FIT_TO_WINDOW, disp_prop);

Windows Embedded is a general term for a family of operating systems developed and provided by Microsoft for embedded devices.

When it comes to embedded OS, what can be used or not depends on which drivers and functions are built into the OS.
Due to the above circumstances, I think that there are few USB cameras that officially claim to be compatible with Windows embedded.

However, if the embedded OS you are using has a driver that recognizes the imaging device, you can use the USB camera like a normal OS.

In fact, some customers are using our DN3 series.

USB3.0 camera DN3 series

One cause may be that the PC’s current supply is insufficient.

(Since it is not noise, repeater cables etc. cannot be used to deal with it.)

In particular, notebook PCs may have a low total amount of power supply or may be in power saving mode by default.

In this case, an easy solution is to use a self-powered HUB (HUB with an AC adapter).

The power supplied to the camera and active cable will now be supplied from the HUB, not the PC.

There are also self-powered HUBs with an ammeter as shown below.

Your PC’s C-State is at play, and this can sometimes cause problems.

Simply put, C-State is a function that puts the CPU into a low power state to save energy.
Therefore, the power supply from the USB is often insufficient, which can cause video delays or stuttering when using devices such as USB cameras.

Especially in Windows 10, C-State is enabled to extend battery life and save power.

C-State is different from power plan power saving mode.

If your power plan is set to Power Saver or Balanced and the issue persists even after changing to High Performance, you may need to turn off C-State.

C-State can be turned off from the BIOS, but since the BIOS description etc. differ depending on the manufacturer, it is not possible to clearly specify the procedure.

If you need to stop C-State, please contact us.

Basically, it is more stable if it is directly connected to the USB port of the PC.
(However, if the PC’s power supply is vulnerable, the self-powered HUB may be stable.) 
There are a few things to keep in mind when using HUB.

１．Use USB3.0 HUB.

　If you use the USB 2.0 type, it will not work normally.
However, if you adjust the number of clocks on the camera side, the video may be displayed.
However, it may cause abnormal behavior, such as extreme slowdown, or low-resolution cameras that show up but not high-resolution cameras.

２．As much as possible, use a self-powered HUB.

　　Especially when using a notebook PC, the power supply to the camera may be insufficient when using USB bus power, and abnormal operation may appear.
Of course, it depends on the power capacity of the PC side, so it may work just fine.

（Supplement）

　　
Even if you choose a USB 3.0 self-powered HUB, you can see some HUBs that do not have USB 3.0 communication speed.
(Depending on the HUB, the communication speed may be reduced.) 
In this case, abnormal behavior may occur, such as a low-resolution camera working but a high-resolution camera not working.

“32bit” and “64bit” refer to the way in which a computer’s processor (also known as a CPU) processes information. A 64-bit version of Windows can handle large amounts of random access memory (RAM) more efficiently than a 32-bit system.

In the previous versions of Windows XP and Vista, it was 32-bit, with certain exceptions, so the camera was only compatible with 32-bit. However, from Windows 7, not only 32-bit but also 64-bit has become common. However, even if you send a 64-bit signal to a camera that only supports up to 32-bit by the element itself, it will not work. It is not possible to respond only by updating the software, and it is necessary to change the device itself to support 64bit.

Currently, all USB microscopes and USB cameras sold by our company are 64-bit compatible.

The minimum illumination of the camera (minimum subject illuminance) is
It is the minimum illumination required by the camera to take pictures.

The lower the minimum illumination value, the better you can shoot in the dark.
If the minimum illumination is low, “a wide range of shooting can be done = the area where the image is displayed increases”
However, the image quality itself also depends on other factors of the camera.

The minimum illuminance of infrared cameras used for nighttime monitoring is 0 lux.
It does not use external light, but emits “infrared rays” that are invisible to the human eye.
In other words, you don’t need any illumination when shooting, and you can shoot in complete darkness.
On the other hand, the minimum illuminance of a high-sensitivity camera is less than 1 lux (0.1~0.002 lux),
Even with ultra-high-sensitivity cameras, the minimum illuminance is set very low at ~0.00001 lux.
Shooting in complete darkness is not allowed.
Also, in order to shoot as a video that can properly check the contents,
The illuminance is about 2.5~3 times higher than the minimum illuminance of the camera.
There is no particular uniform standard for the minimum illuminance value. It is important to note that the numerical values are given according to different measurement methods and standards for each manufacturer.

Ordinary C-mount cameras cannot be used for observation and monitoring under vacuum conditions.

Although it is not our product, it seems that the following ultra-vacuum cameras are also sold.

In a typical industrial camera, strong light such as laser light or arc discharge light can cause the imaging sensor to cause burn-in.

Usually, when shooting strong light, a neutral density filter (ND filter) is used. ND filters are used to reduce the amount of light by a certain amount, regardless of wavelength.

ND filters on the market include ND4, ND8、…、 and ND1000. The number at the end indicates the dimming rate.

* If the level of the observation light is reduced to 1/1000, a commercially available product is sufficient.

Some cameras are designed for strong light. For example, a camera that observes strong arc light has a built-in ND filter on the body.

Depending on the intensity of the light, each manufacturer has its own ideas. One manufacturer adjusts the optical axis of a device with a built-in semiconductor laser (Class 3B) by attaching an ND filter to an ordinary industrial camera.

Of course, there are also dedicated measuring instruments for detecting the beam position.

When detecting beam position or measuring energy distribution such as lasers, it is recommended to use a dedicated measuring instrument instead of a general-purpose camera.

Some use cameras as measuring instrument systems, while others use sensors such as thermopiles or PSDs.

Our cameras have infrared filters. Therefore, it is not possible to take a screen in the infrared region.
However, at the request of the customer, the infrared filter can be removed and shipped, so please contact technical support for details.

Color cameras have a monochrome (black and white) mode, but there are also pure monochrome cameras (black and white cameras).

The monochrome mode of a color camera is usually converting a color image to monochrome.

So what are the advantages of a pure monochrome camera? In general, monochrome is more sensitive than color cameras.

The high sensitivity is advantageous for adjusting the shutter speed and depth of focus. They also have different wavelength sensitivity characteristics. The sensitivity of the sensor itself can also change significantly.

Example of spectral characteristics of a color camera	Example of spectral characteristics of a monochrome camera
Example of filter characteristics of a color camera

API is an abbreviation for Application Programming Interface. It is an interface designed to facilitate the programming of applications, allowing for the concise creation of programs.

SDK refers to the Software Development Kit.

We currently release the SDK for some models, but not for some models.

Cameras for which the SDK is available include the DN series (USB cameras), the CS series (USB cameras), and the EG series (GigE cameras).

As for the DN series, you can also create programs using the DirectX SDK provided by Microsoft.

In particular, the DN3UVC series can be programmed using the API of the UVC standard.

The environmental resistance of a typical C-mount camera is as follows:

・Temperature: 0°C~40°C
・Humidity 35%~85% (no condensation)

A separate cooling system is required to ensure a certain level of heat resistance.

We do not handle it, but it seems that there is a simple environment-resistant camera at the level of 60°C~100°C.

(If it goes beyond this, it seems that it will be almost custom-made.) 

If it is a GigE camera instead of a USB camera, it seems that an environmentally resistant camera can also be used. Below is the
Temperature: -40°C~85°C
Humidity 10%~90% (no condensation)

There are two main types of UVC cameras that we handle.

About DN series

DN series cameras are a higher type than general UVC cameras.
There are two points at the top.

The first one comes with a trigger terminal.
Very few UVC cameras come with a trigger terminal, but industrial USB cameras generally come with a trigger terminal.
This function was added in response to a request to use the UVC camera like an industrial camera.
The other comes with a tool program that allows you to remember camera settings such as white balance.
The brightness and color adjustment of UVC cameras are basically set to automatic and cannot be adjusted, but he can save the adjustments by using a tool program.

UVC camera with trigger terminal

About WA2 series

The WA2 series camera is a price-oriented type.
All that can be done is the same control as a general web camera.

The advantage over web cameras is that they are C-mount, so lenses can be replaced.
I think it will meet your needs such as “A web camera is sufficient, but the angle of view is not suitable.”

Low price UVC camera

Recommend

Basically, the DN series is recommended because it can do more things than the WA2 series.
It can be adapted to various conditions.
If you want to build it cheaply, please choose the WA2 series.

In order to perform UV (ultraviolet light) observation, you need a camera that is sensitive to UV and a lens that is UV-compatible.

Our cameras are mainly intended for visible light observation and are not sensitive in the ultraviolet region.

As shown below, there is no sensitivity in the ultraviolet region.

UV observation can be broadly divided into two types.

（１） When observing scratches, stains, unevenness, etc. on the surface of an object
（２）When observing the faint fluorescence phenomenon of an object

When choosing a camera, you should focus on one of these uses.

(1) When using a camera sensitive to ultraviolet rays

(2) In order to capture not only ultraviolet light but also weak fluorescence phenomena, a cooled CCD camera is generally used.

Also, the lenses must be UV compatible.

(The following is an example of a zoom lens made by Navitar in the US.)

GigE camera is an abbreviation for Gigabit Ethernet camera.
No expensive dedicated board is required, and a general-purpose Ethernet cable can be used.
The port to connect is also a LAN port.
However, a power source is required to drive the camera.

＜Connection example＞

The price is the same as a USB camera, but the feature is that the cable can be extended (up to 100m).
There is also stability in communication.
The initial settings (environment settings) are a little more complicated than a USB camera, but once connected, the communication stability is higher than that of a USB camera.

Shodensha GigE camera

	GigE camera (1.3 million pixels, color) EG130U-C
	GigE camera (Sony 3.2 million pixels, color) EG320-C

Ordinary C-mount cameras are not suitable for observation and surveillance within radiation zones such as nuclear facilities and laboratories. In particular, it is necessary to use sensors that are resistant to radiation.

Although it is not our product, it seems that cameras equipped with CMOS sensors that are resistant to radiation are also sold.

Since a typical camera is an electronic device, its usable temperature range is usually limited to around 40℃ to 50℃.

■ Heat-Resistant camera

There are also specialized manufacturers of cameras that feature heat resistance.

The following cameras are from Security Japan.

However, when using a regular heat-resistant camera, air cooling or water cooling equipment is required separately, which significantly increases the price.

●What is a GigE camera?

When looking for industrial cameras, USB cameras and GigE cameras often come up.
When you hear a USB camera, you probably imagine a camera that connects to a computer via USB.
Many people may not have an image in mind when they hear the word GigE camera.

A GigE camera is a camera that connects to a computer using a LAN cable.
USB requires that the distance to the computer be 3 meters or less,
but GigE cameras can use a LAN cable and can be built even if the distance to the computer is 100 meters.

●Frequently asked questions about GigE cameras

Here’s something for those with a little more knowledge to think about.
If you connect it to your computer using a LAN cable
・How should I supply power to the camera?
・Does it seem like it takes a lot of effort to obtain an IP address?
I think there are many people who have this question.

●Power supply to GigE camera

Regarding power supply for GigE cameras, there is an option called POE power supply that can supply power to the camera.
If you use this together, you can power the camera with a LAN cable.
Connect the camera and POE power supply with a LAN cable as shown in the diagram below.
POE power is supplied using an AC adapter.
Connect the POE power supply and computer with a LAN cable.

●Is it necessary to obtain an IP address with a GigE camera?

Our GigE camera basically does not need to obtain an IP address when connecting to a computer.
Our GigE camera supports DHCP.
DHCP is a system that allows devices newly connected to an IP network such as the Internet to
Communication rules for automatically assigning setting information necessary for communication such as IP addresses.

Therefore, by connecting our GigE camera to a computer, it will automatically select and use unused IPs.
Therefore, you can use the camera without making detailed IP address settings.
*If DHCP cannot be used due to computer settings, you can also set a static IP address.

●Summary

As mentioned above, our GigE camera can be easily connected to a computer.
Building a GigE camera is not difficult.

GigE camera From 400,000 pixels to 20 million pixels We have it in stock. GigE camera EG series

The port that connects the GigE camera is a LAN port.
However, the LAN port attached to a normal PC does not have a power supply line.
(Of course, a power source is required to operate the camera.)

There are two methods when using a GigE camera.
1. Prepare a separate power supply for the camera.
2. Prepare a NIC for PoE (Power over Ethernet) interface (LAN port with power supply line).

1.

There is no problem if the camera comes with an AC adapter, but there are also devices on sale that add a power supply function by inserting it between the PC and the camera. It is called a PoE injector. It can be purchased from PC peripheral manufacturers (Elecom, Sanwa Supply, Buffalo, etc.).

2.

NIC is an abbreviation for Network interface card and has the same meaning as LAN board, and indicates an expansion board. As mentioned above, the standard LAN port of a normal PC does not have a power supply line. Therefore, it is necessary to add such an expansion board (card) to the PC.

In addition to this, there are also the following that can be used with laptops, etc.

If you want to run multiple cameras on one PC, you can use the following options.

GigE Vision frame grabber board (4 ports, with POE power supply) EG-IB4

If you want to view images from a direct-monitor type camera on one monitor at the same time, you will need a device called a “splitter”.

We would like to introduce some of them.

1. Connecting 2 high-definition cameras (single-function type)

It is very simple to use and supports up to 2 cameras.
*Manufacturer model number: YHD-M21

There are two modes that you can switch between.

●Mode to use the screen in half

●A mode that displays the image from one camera to fill the screen and displays the second camera in a smaller size.

This product is also sold by our company.

2-screen split multiviewer switching device YHD-M21

2. Connecting 4 high-definition cameras (high-performance type)

Images from four high-definition cameras can be displayed simultaneously on one monitor.
*Manufacturer model number: CDPS-41SQN

It can connect up to 4 cameras and has various functions.

(Example of use) The top and side surfaces of one object can be inspected at the same time.

This product is also sold by our company.

HDMI screen splitter CDPS-41SQN

3. Connecting 9 high-definition cameras

This is a commercially available splitter that can connect 9 units.

All operations are done by remote control. Operations cannot be performed on the multiviewer itself.

(Connection example) Connecting two high-definition cameras of different models

The functions include 9-screen display mode, 4-screen display mode, and 1-screen display mode.

<9-screen display mode>

<4 screen display mode>

<Single screen display mode>

*When in single screen display mode, each screen can be displayed in sequence.

4. For USB cameras

When performing split display (multi-screen display) using a USB camera, no hardware is required; our software, HiTriggerFPro4 and HiTriggerQ, can support multiple devices.

What camera is required for a borescope?

Recommended function “Automatic Exposure Takumi”

Shodensha’s high-sensitivity high-definition camera for borescopes

Calibration is performed on two axes: XY.

Normally, calibration is performed using two axes, but in order to simplify the calibration even a little, our high-definition camera uses a method that allows you to click any three points on a circle.

Calibration will improve if you use as much of the screen as possible.
(Although it is possible to calibrate small parts, the error will become larger (accumulation of errors))

Therefore, you need to choose a circle that is as large as possible.
Not all circles need to be reflected.

It is OK if you can get any three points on the circle as large as possible.

Calibration itself can be done in any of the following ways. However, the error increases when (A) > (B) > (C).

（A)	（B)	（C)

It is not necessary that the entire circle is visible.
For example, you can calibrate by selecting three points as shown below.

This is a technique for expressing a wider dynamic range than normal images.
Reduces the contrast of a high-contrast original image to widen the dynamic range.
Even in images with differences in brightness and darkness, you can reduce shadows and overexposure.

The following is an excerpt from the specifications of another company’s camera, and the WDR (wide dynamic range) function is the same.

What is dynamic range?

In camera terminology, there is something called dynamic range. Dynamic range is the range between the brightest and darkest areas that can be sensed by the image sensor.

The unit is expressed in dB (decibels).

Camera sensors have limits to the range of brightness and darkness that they can capture. Things that are too bright will be blown out, and things that are too dark will be blown out.

How to find dynamic range

The value of dynamic range can be determined by dynamic range [dB] = 20log10 (illuminance in bright areas/illuminance in dark areas).

What if the dynamic range is exceeded?

If the brightness exceeds this range, halation will occur.
If this range is exceeded in the dark, the screen will turn black.

HDR and WDR are functions that expand this range and reduce the difference between bright and dark areas. It is used to suppress halation.
(However, using this function will reduce the contrast.)

Dynamic range and camera selection

When you use the high-definition camera GR200HD2, which has an HDR (high dynamic range) function, to shoot images with differences in brightness and darkness, the difference will appear as shown in the photo below.

Shoot in normal mode	Shoot in HDR mode

Shoot in normal mode	Shoot in HDR mode
Shoot in normal mode	Shoot in HDR mode

Points to keep in mind when using a camera with a dynamic range function

By applying this, you can shoot images with reduced halation.
(This is an effect that widens the dynamic range, but does not make it infinite, so it cannot be completely removed.)

If you use this HDR function in conjunction with a filter or V-block, the effect will be even better.

＜HDR function + polarizing filter＞

＜HDR function + White V-shaped block (background)＞

Photo: Menu screen of high-definition camera GR200HD2

There are several ways to input signals from a high definition camera to a PC.

One way is to use a capture board.
However, the shape changes on a notebook PC or a desktop PC, and the shape of the throttle must also be considered.

We please introduce  transducers that can be used irrespective of shape and PC type.

1．HDMI to USB 3.0 converter

The below picture is the HDMI to USB 3.0 converter manufactured by I-O DATA Corporation, identified as the GV-USB3/HD.

If you have a USB 3.0 port, you can use it on both laptop and destop.

If you download special software from manufature’s official website, you can easily shoot movies and play it again on your PC.

The advantage lies in the elimination of the process involving the removal of USB memory or SD cards from the camera and their subsequent insertion into the PC. However, it is important to note that, due to the specification of utilizing USB, real-time performance may slightly diminish compared to a direct connection to the monitor.

Additionally, it is imperative for the PC to be equipped with a USB 3.0 port, as the device will not operate with a USB 2.0 port. Furthermore, compatibility with high-definition cameras is extended to include the utilization of standard measurement software for microscopes.

XM200HD uses a dedicated remote control to save images.
If you only want to save images, you can control it externally without using a remote control.
The terminal on the remote control is a ready-made 3-pole stereo mini plug 3.5mm.
It is also easily available on the internet.

No problem even if you disconnect the optional remote control and use it.

If you disconnect the remote control and use it, insert a resistor (30KΩ) between the white wire and yellow wire to short circuit and a static image will be saved. (Make sure the resistance is 30KΩ.)

There is no length limit in the HDMI standard, but metal cables are typically up to 15m.
Most cables on the market have a length of up to 15m.

When looking, they are probably sold up to about 20m high.

However, there are different types of extenders on the market that can be used to extend lengths beyond 100m.

Below is an extender that uses coaxial cable and allows extension up to 120m.

There are two main ways to shoot video with a high-definition camera that does not have a storage function: “methods that use a PC” and “methods that do not use a PC.”

Please refer to the page below for information on how to use a PC.

As a method that does not use a PC, use an HDMI recorder.
We sell the following HDMI recorders.

　HDMI recorder HR-MINI

As mentioned above, there is no need for a PC; all you need to do is connect the monitor and camera with an HDMI cable.

You can save images and videos to a microSD card or USB memory storage device connected to the main unit.

For details on installing an external HDD and long-term recording, please refer to the following page.

The AC adapter and HDMI cable of our high-definition camera come straight out from the back of the camera.

When installing, you may want to shorten the space for this wiring section.
In that case, you can easily save wiring space by using a horizontal connector.

Horizontal connector – For HDMI cable (left) – For AC adapter (right)

You can omit the space on the back as shown in the photo below.

Wireless HDMI trensceiver is commercially available with low price.

This time, I bought the one connected with our HDMI camera and checked the operation.

The transceiver size is same as a cigarette case.

	Since the power is very necessary for each transmitter and receiver, I think that it doesn’t change interm of saving wiring.
	There is no delay or color deterioration.
	There is no problem with menu and display function. Camera is also ok too.

Wireless HDMI trensceiver is commercially available with low price.

This time, I bought the one connected with our HDMI camera and checked the operation.

The transceiver size is same as a cigarette case.

	Since the power is very necessary for each transmitter and receiver, I think that it doesn’t change interm of saving wiring.
	There is no delay or color deterioration.
	There is no problem with menu and display function. Camera is also ok too.

Please understand that it does not guarantee the operation of all HDMI wireless transmitter/receiver.

（１）Without a cooling system

Since the camera itself is an electronic device, it cannot cope with high-temperature environments.

However, if an environment-resistant camera is used, it can be used at about 60°C.

(The following are the products we handle.)

-40℃ to +60℃（-40℉ to +140℉）, Humidity 95％

（２）With cooling system

A heat-resistant camera is a form in which a heat-resistant housing is attached to the camera.

In this case, a separate cooling device is required. Here’s an image:

(The following are products from a manufacturer specializing in heat-resistant cameras.)

There are also products with shapes that apply this technology.

(The following are products from a manufacturer specializing in heat-resistant cameras.)

However, when compared to the type that applies a heat-resistant borescope, the diameter is thicker. The diameter is about 40 mm.

They are also available in a wide variety of sizes.

There are also plenty of options, such as waterproof connectors.

1. Types of Waterproof Cameras

There are many different types of waterproof cameras.

For example, digital cameras that are often used in daily life, and even the camera functions of recent smartphones are waterproof. These cameras have a waterproof IP rating, which means they are waterproof and splash-proof. Another example is outdoor surveillance cameras.

There are different types of digital cameras, such as those with a waterproof IP rating on the main body and those that are used in a waterproof housing case used for underwater photography such as diving, etc., and those that are suitable for various scenes and lifestyles.

On the other hand, surveillance cameras are constantly installed in harsh outdoor environments, so requirements such as heat resistance, cold resistance, water resistance, wind resistance, and dust resistance are required. They can also be installed at heights and are housed in a robust outdoor housing case.

Durability and reliability are equally important for industrial and industrial applications, i.e. for industrial and industrial cameras used in factory production lines.

2. What is required of waterproof cameras for industrial and industrial use?

Since there are processes that use water in factory production lines, there are situations where cameras are required to be waterproof, water-resistant, and dustproof.

In such a situation, the types of digital cameras and surveillance cameras mentioned earlier may not be suitable for you.

In the case of digital cameras, compact lenses may not be interchangeable. Different lenses may be required depending on the distance, short range, and magnification, but most compact digital cameras can only use lenses that are built into the lens at the time of purchase.

On the other hand, in industrial applications, there is a need for easy lens replacement that can be used in a variety of scenes. For example, you might want to take a landscape shot, a whole machine, or a close-up shot of a small part.

In addition, from the perspective of shooting timing, there are more and more cases where trigger signals are input for shooting.

Therefore, waterproof cameras required for industrial and industrial cameras have the following requirements:

• Be waterproof
• The lens can be easily changed according to the scene.
• The camera must be small
• Trigger signal can be received from an external terminal

3. Our Industrial Waterproof Cameras

1. What is the waterproof and dustproof nature of the camera?

Industrial cameras and industrial cameras are widely used in factory production lines.

Since there is a process that uses water in the factory, there are situations where the camera is required to be waterproof and dustproof.

Waterproof and dustproof refers to structures that prevent dust and moisture from the outside from entering the inside of the equipment and that prevent them from having a harmful effect on the equipment.

If dust or moisture enters the inside of the equipment, it may adversely affect the operation of the equipment and may cause a malfunction or accident.

Therefore, it is necessary to select equipment with appropriate dustproof and waterproof properties according to the usage environment. For this purpose, a standard called IP protection rating is used.

2. What is the dustproof and waterproof standard “IP protection grade” for cameras?

3.  Advantages and disadvantages of industrial waterproof and dustproof cameras

4. Precautions when selecting dustproof and waterproof cameras

When selecting an industrial dustproof and waterproof camera, there are many advantages depending on the application, but there are also caveats.

【Notes】

Waterproofing of the junction between the lens and the camera (around the C-mount) is also important. In addition to dustproof and waterproof cameras, measures are also required for lenses and C-mount areas.

Our dustproof and waterproof cameras come with a waterproof lens tube that covers the entire fixed-focus (CCTV) lens.

In addition, the waterproof lens tube comes with packing on each part. Here’s what you can do.

・Measures against condensation

Condensation in the waterproof lens tube is more likely to occur under the sudden temperature difference between the temperature inside the camera and the outside temperature, as well as in humid conditions. Therefore, care must be taken, especially in humid environments with large temperature differences.

As a countermeasure, it is common to put a desiccant inside the waterproof lens tube to reduce the humidity.

Measures for cable and connector parts

Not only the camera body, but also the cables and connectors need to be dustproof and waterproof. Our dustproof and waterproof cameras come with waterproof LAN cables and trigger cables equivalent to IP67.

In addition, all of our megapixel fixed focal length lenses can be contained within a waterproof tube lens.

Fixed focus lens

Summary

Waterproof GigE Camera

There is a need for the use of cameras in high-vibration breakers, clamshells, forklifts, and on-site sites where water is heavily applied.

If you need not only water resistance, but also vibration resistance, you can consider fitting the camera into a housing.

It is necessary to use a camera that is both vibration and water resistant.

Tokyo Tsushinki Co., Ltd. offers cameras that are vibration and water resistant.

In general, the sensitivity characteristics of sensors used in cameras are often indicated by graphs representing QE (quantum efficiency) on the vertical axis and wavelength on the horizontal axis.

Here’s an image.

In this case, the quantum efficiency is 5% at a wavelength of 950 nm and 60% at a peak wavelength of 550 nm.

The maximum efficiency of this sensor is 60%, so the sensitivity at a wavelength of 950 nm is about 8.3% of the sensitivity at the peak wavelength.

In the case of infrared sensors, there is also a graph notation as follows.

In this case, QE will be a diagonal line, and we will read from that line. At wavelengths of 450nm~700nm, the quantum efficiency is 65%, and at 950nm, it is 20%.

20/65 = 31%, and the sensitivity at the wavelength of 950 nm is about 30% of the sensitivity at the peak wavelength.Top of Form

In general, the transmission wavelength of silicon is said to be from 110 nm to 1200 nm.

■ Confirmed with 1100nm IR camera

■ Confirmed with 1200nm IR camera

You can clearly see that the silicon is permeable.

Dedicated thermal cameras are generally expensive. In particular, if you want to observe wavelengths above 1300 nm, you need an InGaAs camera.

Up to about 950 nm, which is the range of near-infrared rays, it may be possible to observe with a normal black-and-white camera.

The following are the characteristics of our industrial C-mount cameras.

USB 3.0 camera (2 million pixels, monochrome). DN3RG-200BU

The spectral sensitivity curve of this camera is as follows.

There is some sensitivity even at 950 nm.

Observation is possible depending on the lighting device.

However, monochrome cameras are fitted with anti-reflective filters. This filter may slightly reduce sensitivity in the infrared region, but can often be easily removed. Our DN series can also be shipped with the filter removed according to the customer’s request.

The DN series with the filter removed was used to make observations inside the case.

Attach screws and nuts to the black resin case.

Transmission observation is performed using 940 nm infrared illumination.

Using the property of infrared rays transmitting through the resin, it was possible to observe the object inside the case.