Miniaturized large zoom ratio digital telephoto lens and its working method
A technology of large zoom ratio and telephoto lens, applied in installation, optics, instruments, etc., can solve the problems of blurred zoom image, low transmittance, small zoom ratio, etc., to achieve improved resolution and high transmittance , the effect of large zoom ratio
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[0034] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.
[0035] Such as Figure 1~9 As shown, a miniaturized digital telephoto lens with large zoom ratio includes a front group A with a positive focal power, a zoom group B with a negative focal power, and a focal Compensation group C with positive power, variable diaphragm assembly D and rear fixed group E with positive power, the front group A includes negative crescent lens A-1 and positive moon lens arranged along the incident direction of light from left to right Dental lens A-2, biconvex lens A-3 and positive crescent lens A-4, the negative crescent lens A-1 and the positive crescent lens A-2 are in close contact as the first cemented group, and the zoom group B includes Negative crescent lens B-1, biconcave lens B-2, and biconvex lens B-3 arranged from left to...
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