Optical system of a large field of view and low distortion aerial survey camera
An optical system and aerial survey camera technology, applied in the field of optical systems, can solve problems such as increasing system cost, achieve the effects of low price, ensure uniformity and reduce manufacturing cost
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[0033] Such as Figure 1-3 As shown, the main performance indicators of the large-field-of-view low-distortion optical system of the present invention are:
[0034] 1. The working spectrum is 500nm-700nm;
[0035] 2. System focal length: 142mm;
[0036] 3. The field of view is 68°;
[0037] 4. The relative aperture is 5.6;
[0038] 5. Distortion is less than 0.005%;
[0039] 6. Quasi-image square telecentric design, the maximum incident angle outside the image plane axis is less than 20°;
[0040] 7. The total length of the optical system is 320mm;
[0041] 8. The back intercept length of the optical system is 67mm;
[0042] The optical system has minimal distortion and telecentricity are contradictory. Generally, the optical system of aerial survey cameras adopts a symmetrical structure. Although the field of view is large, the distortion can be corrected to a small value. The angle is equal, and the telecentricity of the optical system is very poor. Therefore, for a l...
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