Bayer refers to an array of color filters placed on an image sensor in an industrial camera.
In such a case, you can try the following techniques to resolve the issue.
Example: When noise occurs with HiTrigger F-PRO
If noise occurs, operate “Settings” → “Camera” from the software menu.
Open the camera properties screen below.
Decrease the value of the item “Limit Frame Rate” in the red frame and press “OK”.
Tracking is reduced, but noise has been resolved.
Bayer refers to the color filter array placed on the image sensor in industrial cameras.
In a single-plate camera, the image sensor can only detect brightness (black and white or monochrome), so red, green, and blue color filters are placed on top of each pixel to obtain color information.
These color filters consist of R, G, and B filters arranged in a 2×2 matrix.
Specifically, the arrangement is as follows.
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Bayer RGGB |
Bayer BGGR |
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Bayer GBRG |
Bayer GRBG |
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These four patterns are called “Bayer patterns” or “Bayer arrays”.
The camera uses one of these patterns, and the color filter covers the entire image sensor in a repetition of this pattern.
The fact that green is among the two patterns takes into account that the human eye is more sensitive to green than red or blue.
Image data obtained through the color filter of the Bayer pattern is called “RAW data” and does not produce a correct color image even if it is displayed as it is.
Eventually, it is properly processed and converted to a color image, such as the RGB image format.
●DN3G-30 / DN3G-30K / DN3G-30BU / DN3G-30BUK:
MT9V032 ON Semiconductor (formerly Aptina)
●DN3RG-130 / DN3RG-130K / DN3RG-130BU / DN3RG-130BUK:
EV76C560 e2v technologies
●DN3RG-200 / DN3RG-200K / DN3RG-200BU / DN3RG-200BUK:
EV76C570 e2v technologies
●DN3R-300/DN3R-300K:
MT9T001 ON Semiconductor (formerly Aptina)
●DN3R-500/DN3R-500K:
MT9P001 ON Semiconductor (formerly Aptina)
●DN3R-500BU/DN3R-500BUK:
MT9P031 ON Semiconductor (formerly Aptina)
●DN3R-1000 / DN3R-1000K / DN3R-1000BU / DN3R-1000BUK:
MT9J003 ON Semiconductor (formerly Aptina)
Please execute the following code at an appropriate point such as initialization.
ICubeSDK_SetCamParameter( n, REG_CALLBACK_BR_FRAMES, ON ); //n is camera number
This is a setting to call the callback even when the last parameter ON is BadFrame.
If OFF, the callback will be called only when GoodFrame occurs.
It has been reported that the following warning appears in the ICubeSDKSample_x32_x64_vs2010 project on Windows [2.0.4.6].
a) warning C4996: ‘MBCS_Support_Deprecated_In_MFC’: MBCS support in MFC is deprecated and may be removed in a future version of MFC.
Warnings can be suppressed by adding the following line below “#define VC_EXTRALEAN” in stdafx.h.
#define NO_WARN_MBCS_MFC_DEPRECATION
b)warning C4996: ‘CWinApp::Enable3dControlsStatic’: CWinApp::Enable3dControlsStatic is no longer needed. You should remove this call.
This warning appears when “Use MFC” is set to “Use MFC in static library”.
The Enable3dControlsStatic() function is an old specification and is no longer needed, so please comment out the following line in CICubeSDKSampleApp::InitInstance() of ICubeSDKSample.cpp.
Enable3dControlsStatic(); // Diese Funktion bei statischen MFC-Anbindungen aufrufen
Shutter speed is the same as exposure time, and is the reciprocal of exposure time.
Therefore, adjust the shutter speed by adjusting the exposure time.
The following camera position deviation tolerances are currently available.
DN3R-1000K：
Axis X >> +/- 0.5mm
Axis Y >> +/- 0.5mm
Axis Z >> +0.115 / -0.075mm
C# sample code To suppress the warning CS0649 that appears when building
the ICubeSDKSample project, add the following line to the beginning of ICube.cs.
#pragma warning disable CS0649
When I build and run the C# sample code on x64 Release, the following error message appears and I cannot run it.
Error: No ICubeSDK.dll available
On the Build tab of the C# sample code project properties, select Release for Configuration, x64 for Platform, and define _WIN64 for Conditional Compilation Symbol.
The Strobe signal output from the rear terminal of the camera is designed to be output only when the program is set to Trigger mode.
*Trigger mode refers to setting TRIG_HW_START or TRIG_SW_START to ICubeSDK_SetTrigger() and executing ICubeSDK_Start().
If you set TRIG_STOP to ICubeSDK_SetTrigger() and execute ICubeSDK_Start(), the Strobe signal will not be output.
With USB cameras (DN series), you can check the operation of external signals for shooting and strobe signals without programming.
In addition to the optional I/O terminal, the DN series has an output terminal exclusively for strobe signals.
You can switch to external trigger mode using the icon below on the standard application software (iControl).
I checked the actual movement in this mode.
A 1ms strobe signal is output by default.
This is for operation testing only, so if you want to change the signal time, you will need to create a program.
You can also check on the screen how the image will be shot in this situation.
(The captured image will be displayed on the application.)
However, this is for TEST purposes only, so if you want to save this video,
you will need to click the save key again to save it.
DN2G-30 / DN2G-30K / DN2G-30BU / DN2G-30BUK
DN3G-30 / DN3G-30K / DN3G-30BU / DN3G-30BUK
DN3V-30 / DN3V-30K / DN3V-30BU / DN3V-30BUK
Resolution：640 × 480
Element size：1/3 inch
Pixel size：6.0 × 6.0 μm
DN2RG-130 / DN2RG-130K / DN2RG-130BU / DN2RG-130BUK
DN3RG-130 / DN3RG-130K / DN3RG-130BU / DN3RG-130BUK
DN3V-130 / DN3V-130K / DN3V-130BU / DN3V-130BUK
Resolution：1280 × 1024
Element size：1/1.8 inch
Pixel size：5.3 × 5.3 μm
DN2RG-200 / DN2RG-200K / DN2RG-200BU / DN2RG-200BUK
DN3RG-200 / DN3RG-200K / DN3RG-200BU / DN3RG-200BUK
DN3V-200 / DN3V-200K / DN3V-200BU / DN3V-200BUK
Resolution：1600 × 1200
Element size：1/1.8 inch
Pixel size：4.5 × 4.5 μm
DN2R-300 / DN2R-300K
DN3R-300 / DN3R-300K
DN3V-300 / DN3V-300K
Resolution：2048 × 1536
Element size：1/2 inch
Pixel size：3.2 × 3.2 μm
DN2R-500 / DN2R-500K / DN2R-500BU / DN2R-500BUK
DN3R-500 / DN3R-500K / DN3R-500BU / DN3R-500BUK
DN3V-500 / DN3V-500K / DN3V-500BU / DN3V-500BUK
Resolution：2592 x 1944
Element size：1/2.5 inch
Pixel size：2.2 × 2.2 μm
DN2R-1000 / DN2R-1000K / DN2R-1000BUK / DN2R-1000BUK
DN3R-1000 / DN3R-1000K / DN3R-1000BUK / DN3R-1000BUK
DN3V-1000 / DN3V-1000K / DN3V-1000BUK / DN3V-1000BUK
Resolution：3840 x 2748
Element size：1/2.3 inch
Pixel size：1.67 × 1.67 μm
When using a DN series USB2.0/3.0 camera with software that runs on DirectShow, some camera property settings (flip V, flip H) may not be saved and may return to their original state the next time the software is started.
DN series USB2.0/3.0 cameras save most setting values on the camera body, but flip V and flip H are not saved on the camera body, but are saved on Windows for each account using the DirectShow system. ・Hold.
At this time, if the driver has been set up at least once with that account, property settings (flip V, flip H) that are not saved on the camera body will be saved in Windows, but if the driver is set up with another account, they will be saved. I know it won’t happen.
If you want to restore the status of Flip V, Flip H for a specific account the next time you start the software, you can do so by following the steps below.
1) If your account type is not administrator, change it to administrator.
You cannot set up the driver unless you are an administrator.
2) Delete the driver once.
3) Set up (reset up) the driver.
4) Restart your computer.
If the DN series USB2.0/3.0 camera is not found after restarting, restart again.
※ If you set up the driver again, the DirectShow module will also be set up again.
The AUX connector on the camera side is the SH series connector BM08B-SRSS-TB “Base” manufactured by Japan Scrimping Contact Co., Ltd.
For the connector on the cable side, prepare the “contact” and 8-pin “housing” of the SH series connector.
Contact: SSH-003T-P0.2-H
Housing: SHR-08V-S-B (with handle) or SHR-08V-S (without handle)
*For cable creation, a crimping machine is required to crimp the contacts and wires.
Crimping machine: AP-K2N
The GND of the AUX terminal of the DN series isn’t a common ground.
The GND of pin 2, pin 4, and pin 8 are each independent.
Also, these three GNDs are independent from the power supply GND (floating GND).
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Connect the USB camera to your PC. |
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Connect the included trigger cable. |
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The two from the left are trigger inputs. |
This is a voltage input. The following is a switch box for our demonstration, but you can connect PLC, relay, etc. as you wish.
Launch the trigger software provided by our company.
If you want to save the video using a trigger, select Trigger (save).
When you open the Basic tag, you can select the save location.
After making the above settings, press the button on the switch box to save the video.
The latest saved video will be displayed on the PC monitor.
DN3 series cameras (USB 3.0 specifications) can be used in most cases even when connected to a USB 2.0 terminal
by lowering the camera clock value to less than half of the maximum value.
The data transfer ability of USB2.0 increases the performance of the computer,
so if Bad Frame occurs even if you set the clock value to half of the maximum value,
try lowering the clock value.
The structure of the video is simply a “flipbook”.
What is used in each page of the “flipbook” is an “image.”
For example, with a resolution of 1920 x 1080 (full high-definition) and “30 frames/sec”, 1800 images are required in 1 minute.
If you made this into a video as is, it would be a huge file size of 15GB in 3 minutes.
Therefore, if you want to save it as an uncompressed file (extension AVI, etc.), it is common to use a resolution of around 640 x 480 (300,000 pixels).(Even so, the capacity will be about 1MB in 1 second.)
If you cannot lower the resolution, you must compress each image one by one using a compression algorithm called a codec to reduce the file size.
Currently, the commonly used “codecs” are H.264 and VP9.
The extension of video files compressed with H.264 is MP4, and the extension of video files compressed with VP9 is webm.
By the way, H.264 includes patents, so a license fee will be charged.
For this reason, there are very few free software that has a video recording function that can save videos as MP4 files.
(There seems to be a lot of uncompressed AVI.)
A video that is a series of still images taken at intervals is called a time-lapse, and is also expressed as time-lapse photography.
It is the exact opposite of video shot with a high-speed camera (slow-motion video), and is a video that was shot over a long period of time and played back in a short amount of time.
Therefore, unlike long-duration video recording, it is possible to record for a long time with a small amount of storage space.
Also, since each image is a still image, high-resolution photography is possible.
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<Reference> Below is a sample time-lapse video on YouTube. https://www.youtube.com/watch?v=UQ_QqtXoyQw (It can be applied to photographing things that change slowly, such as the movement of microorganisms and tissue culture.) |
Shooting time-lapse videos is easy, even without special equipment.
(1) Many cameras have a time-lapse shooting function, which makes it easy to take photos.
(2) You can also download a time-lapse compatible app and take pictures with your smartphone.
(3) Take interval shooting and save still images. Use editing software to create a time-lapse video.
When using our products, use method (3) above.
To take interval shots with our USB camera, we use our dedicated software Hi TriggerQ to take pictures of the object and save a large number of still images.
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First, I took interval shots of the inside of my company using the software mentioned above.
Use editing software to connect these to create a video.
There are editing software such as WindowsLiveMoveMaker, but this time I tried using the free software “Panolapse”.
The free version has resolution limitations, so the resolution of still images has been lowered.
(Restrictions will be removed when you purchase a license.)
It will be downloaded in the following format.
When you launch Panolapse.exe, a screen like the one below will appear.
Click “Import to Panolapse” to import all the still images that were taken at intervals earlier.
Just click the preview button and it will become a time-lapse video.
※Please note※
Time-lapse editing software is not our product.
This will be introduced as an example.
If you are unable to achieve maximum FPS with our industrial cameras (CS/EG series cameras), please check the following items:
The maximum FPS listed on our product page is the value when the pixel format is “Bayer 8bit”.
Here are two ways to change the pixel format to Bayer.
If you install the driver for the CS/EG series camera, you can use an application called MVS.
Start MVS and change the pixel format of the camera to “BayerXX 8”.
(XX depends on the camera)
By installing the driver for the CS/EG series camera, you can develop programs using the API.
Change the pixel format to “BayerXX 8” in the program.
(XX depends on the camera)
If you do not exceed 9K (9000 bytes), you will not get the maximum FPS.
Try setting “GEV SCPD” to “200” in MVS.
However, setting the value too low can result in packet loss.
「Feature Tree」→「Transport Layer Control」→「GEV SCPD」
Drivers for CS/EG series cameras can be downloaded from the following links:
● Equipped with motor, control board, and USB communication function on the lens body
● You can connect to a PC (Windows / Linux) with a single USB cable to control focus adjustment and aperture adjustment.
● Can be used with general-purpose C-mount cameras (other companies’ C-mount cameras are also possible)
● 12MP compatible high-resolution lens
● Compatible with 1/1.1 inch large elements
● Lens control sample program is included as standard
※ We can develop a lens control program upon request.
Below are two ways to set up jumbo packets (jumbo frames).
Our driver comes with MVS, which is installed to set 9K for jumbo packets on the NIC (Network Interface Card).
After installing MVS, the number of NICs may increase by adding PoE boards, etc. In that case, uninstall MVS and install it again, and the jumbo packet will be set to 9K.
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To change the settings, follow these steps:
“Control Panel” → “Hardware and Sound” → “Device Manager”
Double-click the network adapter that contains the NIC (Network Interface Card) to enter its properties interface.
Select the Advanced tab, select Jumbo Packets (Jumbo Frames), and make your changes.
Leave the VISUAL INSPECTION to the camera!
With “one camera” and “4 easy steps”, a wide variety of judgments are possible!
● Full of convenient functions for visual inspection!
◊ Misalignment judgment
◊ Shape judgment
◊ Presence or absence judgment
◊ Color discrimination
◊ OCR function, etc.
● Lens / lighting integrated type! Easy start with one camera
● The waterproof and dustproof standard of the camera is IP67 compliant
※Power supply sold separately
※ LAN cable sold separately
（１）A simple way to use it is to start multiple viewer software that can be started at the same time.
（２）Use software dedicated to displaying multiple screens.
It may also be possible with free software.
However, this may not be possible with the same camera, and stability may be lacking.
We recommend that you try it out before using it.
(Depending on the software, multiple startup itself may be prohibited.)
The following is a simple test at our company. (Operation is not guaranteed.)
I connected two of our cameras and started up a free software called Amcap multiple times to display two screens.
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In the case of two-screen display, only the active screen (the left screen in the above example) can be operated,
so if you want to perform menu operations, you will need to switch screens.
The software is designed for multiple screen display, so it is stable.
Also, since there is only one menu, operations such as saving are easy.
The following is the multiple screen display software created by our company.
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Multi-screen display |
Features of Hi TriggerQ
It is possible to control multiple cameras, observe both screens, and save images.
In addition to cameras of the same model number, combinations of different resolutions
and color/monochrome cameras are also possible.
Of course, you can also use it with one camera!
●While live monitoring video, still images from up to 4 cameras (uncompressed bitmap format/JPEG compressed format) can be saved using a trigger signal. (Please contact us if you would like 5 or more units.)
●Camera images are always displayed live. You can shoot while monitoring the video.
●Snapshot function allows you to take still images at any time You can also save still images with a mouse click regardless of the trigger signal.
You can save still images on the spot at any time, such as reference images or scenes of interest.
●You can take interval shots.
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High-performance trigger shooting software |
Features of Hi TriggerF PRO4/PRO8長
●Save/pause still images (JPEG/BMP) using a trigger signal, just like pressing a camera shutter.
●Positioning and focusing can be done during live display.
●Supports up to 4/8 cameras (please contact us for more!)
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.
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| 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.
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.
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 |
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However, color cameras often have built-in filters that cut wavelengths at around 650 nm.
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.
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.
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UVC camera with trigger terminal |
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.”
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Low price UVC camera |
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.)
