Telecentric lens (supports coaxial lighting, W.D.65mm type)

Compact size and ideal for embedded applications!
Coaxial lighting compatible, working distance of 65 mm type

 

● Can be used as a medium to high magnification macro lens.
● There is no expansion or contraction of the object within the depth of focus.
● You can reduce the ambient distortion due to parallax.
● You can choose the focal length.
● When used with coaxial lighting, uneven illuminance of the object can be reduced.

Product Inquiry phone028-3911-2006

Specifications

Model RTK-0.8F-65 RTK-1F-65 RTK-1.5F-65 RTK-2F-65 RTK-3F-65 RTK-4F-65 RTK-6F-65 RTK-8F-65
Optical magnification 0.8x 1ｘ 1.5x 2ｘ 3x 4ｘ 6ｘ 8ｘ
Working distance
（W.D）		 65mm 65.3mm 68.2mm 65mm 61.8mm 65mm 64.2mm 63.8mm
Depth of field
※1		 1.85mm 1.33mm 0.44mm 0.33mm 0.22mm 0.14mm 0.09mm 0.06mm
Resolution
※2		 12.4μm 11.2μm 5.6μm 5.6μm 5.6μm 4.3μm 4.4μm 4.4μm
Numerical aperture

（N.A）		 0.027 0.03 0.06 0.06 0.06 0.078 0.077 0.077
Valid F value 14.9 16.8 12.6 16.7 25.1 25.8 39.1 52
TV distortion -0.003％ 0.00％ 0.031％ -0.01％ -0.008％ -0.01％ 0.00％ 0.00％
weight 41g 42g 33g 41g 40g 40g 46g 52g
Compatible camera 1/2 type 1/2 type 1/2 type 1/2 type 1/2 type 1/2 type 1/2 type 1/2 type
Mount C Mount C Mount C Mount C Mount C Mount C Mount C Mount C Mount
Scope of view
1/3 inch camera
(H x V)		 6.0mmx4.5mm 4.8mmx3.6mm 3.2mmx2.4mm 2.4mmx1.8mm 1.6mmx1.2mm 1.2mmx0.9mm 0.8mmx0.6mm 0.6mmx0.45mm
Scope of view
1/2 inch camera
(H x V)		 8.0mmx6.0mm 6.4mmx4.8mm 4.27mmx3.2mm 3.2mmx2.4mm 2.13mmx1.6mm 1.6mmx1.2mm 1.07mmx0.8mm 0.8mmx0.6mm

 

※1 Calculated value calculated with a permissible circle of confusion diameter of 40 μm
※2 Theoretical resolution calculated at a wavelength of 550 nm

 
 

Main features

A telecentric lens is a lens that has a constant magnification at any position within the object distance.
There is no change in magnification within the depth of field.
There is no image distortion due to the field of view, and the accuracy of shape measurement of deep parts is greatly improved.
VGA compatible
 

 

Features of telecentric lenses

1.Can be used as a medium to high magnification macro lens.

 

→　 The price will be higher than the macro lens, but the performance will also be improved.

 
 

 

2.There is no expansion or contraction of the object within the depth of focus.

 

　→Measurement error can be reduced when measuring dimensions.

 
 

 

3.You can reduce the ambient distortion due to parallax.
 

 

 

4.You can choose the focal length.
 
USBカメラ (Short-distance type WD65mm and long-distance type WD110mm are available)

 

5.When used with coaxial lighting, uneven illuminance of the object can be reduced.　
 
テレセントリックレンズテレセントリックレンズ
 
Non-coaxial type and coaxial lighting type are available
 

 

Example of use

Comparison between using a telecentric lens and using a macro lens
 
マクロレンズ使用時
using a macro lens 		テレセントリックレンズ使用時
using a telecentric lens
 
If you use a macro lens, the parallax between the center and the edge of the screen will be distorted even if you shoot the observation object from directly above.
However, when a telecentric lens is used, the distortion due to the parallax between the center and the edge of the screen is extremely small, accurate image information can be obtained no matter where the observation object is projected on the screen.

Specification

General Specification

Inquire about this product

phone028-3911-2006

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