Miniature large zoom ratio digital telescope lens and working method thereof
A technology of large zoom ratio and telephoto lens, which is applied in installation, optics, instruments, etc., can solve the problems of zoom image blur, small zoom ratio, low transmittance, etc., and achieve improved resolution and large zoom ratio , the effect of high transmittance
Active Publication Date: 2016-11-09
FUJIAN FORECAM OPTICS CO LTD
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Problems solved by technology
The optical structure of the traditional telescopic lens is composed of objective lens and eyepiece, but there are generally large volume, small zoom ratio, low transmittance, and blurred zoom image, which is not suitable for handheld observation.
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[0034] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following embodiments are specially cited in conjunction with the drawings, and detailed descriptions are made as follows.
[0035] Such as Figure 1~9 As shown, a miniaturized digital telephoto lens with a large zoom ratio includes a front group A with a positive refractive power, a zoom group B with a negative refractive power, and a focal length set in sequence along the incident direction of light from left to right. The compensation group C with positive power, the iris assembly D, and the rear fixed group E with positive optical power. The front group A includes a negative crescent lens A-1 and a positive lens arranged along the incident direction of light from left to right. The dental lens A-2, the biconvex lens A-3 and the positive crescent lens A-4, the negative crescent lens A-1 and the positive crescent lens A-2 are closely connected to form a first ce...
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The invention relates to a miniature large zoom ratio digital telescope lens which includes a front group A having positive focal power, a zoom group B having negative focal power, a compensation group C having positive focal power, a variable diaphragm assembly D and a rear fixing group E having positive focal power which are successively arranged from left to right along the incoming direction of a light. The invention also relates to a working method of the miniature large zoom ratio digital telescope lens. The working method includes the following steps: disposing the front group A having positive focal power, the zoom group B having negative focal power, the compensation group C having positive focal power, the variable diaphragm assembly D and the rear fixing group E having positive focal power which are successively arranged from left to right along the incoming direction of the light, and adjusting electric focusing, electric zooming, and electric dimming. According to the invention, the telescope lens has reasonable and compact structure and design, achieves light weighting, miniaturization, large zoom ratio, high transmittance, clear zooming image, long observation distance, increased vibration and impact resistance of the lens.
Description
Technical field [0001] The invention relates to a miniaturized large zoom ratio digital telescope lens and a working method thereof. Background technique [0002] At present, digital telescopes require small size, light weight, long observation distance, and high definition. The optical structure of the traditional telescope lens is composed of an objective lens and an eyepiece, but it generally has a large volume, a small zoom ratio, a low transmittance, and a blurred zoom image, which is not suitable for handheld observation. Summary of the invention [0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a miniaturized large zoom ratio digital telescope lens and a working method thereof, which not only has a reasonable structure design, but is also efficient and convenient. [0004] In order to solve the above technical problems, the technical solution of the present invention is: a miniaturized digital tel...
Claims
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Login to View More IPC IPC(8): G02B15/173G02B7/04
CPCG02B7/04G02B15/173
Inventor 刘辉张清苏丘国雄张新彬
Owner FUJIAN FORECAM OPTICS CO LTD