Large image area high resolution digital camera lens
A high-resolution, digital camera technology, applied in the direction of installation, optics, instruments, etc., can solve the problems of small detection range and insufficient detection distance, and achieve the effect of improving monitoring ability, long detection distance and large field of view
Active Publication Date: 2016-05-25
FUJIAN FORECAM OPTICS CO LTD
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Problems solved by technology
[0002] Limited by the size of the image surface, the detection range of conventional digital camera fixed-focus lenses is small or the detection distance is insufficient; in order to meet the increasingly higher requirements for detection distance and detection range, it is necessary to design a lens that matches the large CCD image surface Large image area high resolution digital camera lens
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[0023] Such as figure 1 As shown, a large image surface high-resolution digital camera lens, its optical system is sequentially provided with a front group A with a positive focal power and a rear group B with a positive refractive power along the incident direction of the light from left to right. The front group A is sequentially provided with a positive crescent lens A-1, a negative crescent lens A-2, and a first cemented group in which a biconvex lens A-3 and a biconcave lens A-4 are closely connected, and the rear group is sequentially provided with a biconvex lens B -1 Second cemented group, positive crescent lens B-3 and positive crescent lens B-4 in close contact with biconcave lens B-2.
[0024] In this embodiment, the air interval between the front group A and the rear group B is 8.8 mm; the air interval between the positive crescent lens A-1 and the negative crescent lens A-2 in the front group A is 1.0 mm, the air gap between the negative crescent lens A-2 and the...
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The invention relates to a digital camera lens with a large image plane and a high resolution ratio. An optical system of the digital camera lens with the large image plane and the high resolution ratio is provided with a front set A and a rear set B in the incidence direction of light rays in sequence, wherein the focal power of the front set A is positive, and the focal power of the rear set B is positive. The front set A is provided with a positive crescent lens A-1, a negative crescent lens A-2 and a first gluing set in sequence, wherein the first gluing set is formed by connecting a biconvex lens A-3 and a biconcave lens A-4 in an airtight mode. The rear set B is provided with a second gluing set, a positive crescent lens B-3 and a positive crescent lens B-4 in sequence, wherein the second gluing set is formed by connecting a biconvex lens B-1 and a biconcave lens B-2 in an airtight mode. The digital camera lens with the large image plane and the high resolution ratio can be matched with a large-image-plane CCD chip with the diameter of 43.4 mm, generates video images of high resolution ratio of thirty million pixels, effectively improves the monitoring capacity, and has the outstanding advantages of being large in field view, large in detection range, high in resolution ration, small in size, light in weight and the like.
Description
technical field [0001] The invention relates to the technical field of photoelectric video photography, in particular to a large image surface and high resolution digital camera lens. Background technique [0002] Limited by the size of the image surface, the detection range of conventional digital camera fixed-focus lenses is small or the detection distance is insufficient; in order to meet the increasingly higher requirements for detection distance and detection range, it is necessary to design a lens that matches the large CCD image surface Large image area and high resolution digital camera lens. Contents of the invention [0003] In view of the deficiencies in the prior art, the object of the present invention is to provide a large image area and high resolution digital camera lens, which can be matched with a φ43.4mm large image area CCD chip to generate 30 million pixel high resolution video images. [0004] In order to achieve the above object, the technical solut...
Claims
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IPC IPC(8): G02B13/06G02B13/00G02B7/02
CPCG02B13/006G02B13/06
Inventor 肖维军刘辉陈鹏黄霞霞陈潇
Owner FUJIAN FORECAM OPTICS CO LTD