Large-field-depth large-view-field wide-temperature-variance high-image-quality optical system
An optical system, deep and large technology, applied in the optical field, can solve the problems of small temperature adaptation range, narrow working band, small imaging range, etc., and achieve the effect of wide temperature range, large imaging band range, and large imaging depth of field.
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[0055] see Figure 1-4 , an optical system with a large depth of field, a large field of view, a wide temperature, and a high image quality. The optical path is sequentially provided with a first negative lens 1, a second negative lens 2, a first positive lens 3, a third negative lens 4, and an optical lens. Diaphragm 5, second positive lens 6, third positive lens 7, fourth positive lens 8 and fourth negative lens 9;
[0056] The optical characteristic of above-mentioned first negative lens (1) is:
[0057] -10f'1 1 1 2
[0058] The optical characteristic of above-mentioned second negative lens (2) is:
[0059] -2f'2 2 3 4
[0060] The optical characteristic of above-mentioned first positive lens (3) is:
[0061] f'3 3 5 6 <-0.5f';
[0062] The optical characteristic of above-mentioned the 3rd negative lens (4) is:
[0063] -6f'4 4 7 8 <-f';
[0064] The optical characteristic of above-mentioned second positive lens (6) is:
[0065] 5f'5 5 9 10 <2f';
[0066...
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