There is less image distortion due to the field of view, and the accuracy of shape measurement of deep parts is greatly improved.
●Both sides of the telecentric lens have a telecentric structure on both the object side and the image side.
●There is no image distortion due to the field of view, and the accuracy of shape measurement of deep parts is greatly improved.
●Effective when used for more accurate measurements
Specifications
Model
|
RT1 |
RT3 |
RT5 |
Optical magnification
|
0.1x |
0.3x |
0.5x |
Working distance
(W.D) |
228mm±4mm |
110±2mm |
65±1mm |
Depth of field
|
34.8mm |
6mm |
2mm |
N.A
(N.A) |
0.01 |
0.04 |
0.05 |
Optical distortion
|
0.01 |
0.01 |
0.01 |
Mount |
C mount |
C mount |
C mount |
Compatible camera
|
1/1.8″ |
2/3″ |
2/3″ |
Scope of view
1/2″ camera
(H x V) |
56.8mmx42.6mm |
21.3mmx16.0mm |
12.8mmx9.6mm |
Scope of view
1/3″ camera
(H x V) |
42.6mmx31.9mm |
16.0mmx12.0mm |
9.6mmx7.2mm |
Scope of view
2/3″ camera
(H x V) |
—— |
29.3mmx22.0mm |
17.6mmx13.2mm |
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.
Example of use
Comparison between using a telecentric lens and using a macro lens
|
|
using a macro lens |
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.
Introducing useful options
【Stand for telecentric lenses on both sides】
GRSL-110(Stand for RT1)
GRSL-54(Stand for RT3)
There is a mounting bracket to prevent the lens from shaking and falling.
Place the telecentric lenses RT1 and RT3 on the mounting bracket and fix them with the 3 screws.
・Stand size:380x250x350(H)mm
・Support diameter:φ25mm
|
Stand for RT1
|
|
There is a mounting bracket to prevent the lens from falling. |
|
<Combination example>
Example of combined use of Telecentric lens RT-3, USB camera, measurement software
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