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Detemining Focal length of lens by an image

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Huns023 View Drop Down
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Joined: October/25/2019
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    Posted: October/25/2019 at 03:41
How should design a setup for determining the focal length of a CCD in CMOS TDI camera sensor with an integrated lens to determine the focal length of that lens? I want to verify the focal length information that is provided by the manufacturer which is 580mm with FOV 2.4 degrees.Loco
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Optics Jedi Master
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 3_tens Quote  Post ReplyReply Direct Link To This Post Posted: October/25/2019 at 10:15
Not likely to happen from a published image. You have no known measurements for data.
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Huns023 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Huns023 Quote  Post ReplyReply Direct Link To This Post Posted: October/25/2019 at 11:21
I am planning to take the photo myself. I want to know if there is a way by keeping the object at specific distance and capturing can help me calculate the focal length accurately. I want to check if the focal length is correct.
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