By using a telecentric lens, it is possible to obtain images with less distortion.
I experimented with our telecentric lens RT3, RT5.
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Attach telecentric lenses RT 3, RT 5 to a USB camera (GR 200 BCM) |
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| shoot with Tlecentric lens RT3 |
shoot with Tlecentric lens RT5 |
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You can see that there are no distortions in the four corners of the screen. This is the feature of a telecentric lens. |
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If you are using a CCTV lens, distortion will be less when using a telephoto lens than a wide angle lens.
I tried with a fixed focus lens of 6 mm and a fixed focus lens of 25 mm.
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Attach 8 mm fixed focus lens to a USB camera (GR 200 BCM) |
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You can see that the four corners of the paper are distorted. |
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25 mm fixed focus lens Attach a fixed focus lens to a USB camera (GR 200 BCM) |
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Distortion is not appear in the corners of the paper. |
There are some with less distortion depending on the performance of the lens.
However, it is quite expensive.
Please contact us if you have any questions.
