Method and device for measuring lateral magnification of optical system
A technology of lateral magnification and optical system, applied in the field of metrology equipment, can solve the problem of low repeatability of lateral magnification measurement, achieve the effect of improving the repeatability of measurement results, reducing errors, and improving repeatability
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[0052] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0053] figure 1 To use the line light source optical system lateral magnification measuring device structure schematic diagram, the plane optical path diagram is as follows figure 2 As shown; the device includes a line light source 1, an optical system 2, an image sensor 3. The line light source 1 is imaged onto the surface of the image sensor 3 through the optical system 2, and, in the optical axis direction of the device and the image sensor 3 line direction In the determined plane, the line light source 1 is curved, and any position on the line light source 1 is in-focus imaged onto the surface of the image sensor 3; wherein the horizontal length of the line light source 1 is 3mm, and the pixel pitch of the image sensor 3 is 5.6μm.
[0054] The method of measuring the lateral magnification of an optical system using a line light so...
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