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Zoom optical lens for linear array detector

A line array detector and optical lens technology, applied in the field of optical lenses, can solve the problems of limiting the application of zoom lenses and the inability to expand the zoom range, and achieve the effect of expanding the zoom range and accurate and reasonable sampling area

Active Publication Date: 2020-07-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the prior art, the zoom range cannot be expanded when smooth root replacement is achieved, which limits the application of the zoom lens to linear array detectors

Method used

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  • Zoom optical lens for linear array detector
  • Zoom optical lens for linear array detector
  • Zoom optical lens for linear array detector

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Embodiment Construction

[0060] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0061] The invention provides a zoom optical lens for a line array detector, such as Figure 3 to Figure 6 As shown, it includes seven lenses arranged in sequence, lens one 1, lens three 3 and lens five 5 are convex cylindrical lenses, lens two 2, lens four 4 are concave cylindrical lenses, lens six 6 are concave lenses, lens seven 7 are convex lenses .

[0062] The zoom components of the longitudinal field of view include a front fixed group, a zoom group, a compensation group and a rear fixed group. Front fixed group comprises lens one 1, lens two 2 and lens three 3, and lens one 1, lens two 2 form telephoto objective lens, and the optical center distance of two lenses is d=|f 1 +f 2 |, where f 1 , f 2 is the focal length of the two lenses (the convex one is positive, t...

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Abstract

The invention discloses a zoom optical lens for a linear array detector. The zoom optical lens comprises seven lenses which are sequentially arranged, namely, the first lens, the third lens and the fifth lens are convex cylindrical lenses, the second lens and the fourth lens are concave cylindrical lenses, the sixth lens is a concave lens, and the seventh lens is a convex lens; a zooming componentof a longitudinal view field comprises a front fixed group, a zooming group, a compensation group and a rear fixed group; the front fixed group comprises the first lens, the second lens and the thirdlens; the zoom group comprises the fourth lens; the compensation group comprises the fifth lens; the rear fixed group comprises the sixth lens and the seventh lens; each lens comprises a state I anda state II; and the components meet related constraint conditions. The zoom optical lens disclosed by the invention aims at a specific scene, and further expands the zoom range on the basis of realizing smooth root changing without changing the system length.

Description

technical field [0001] The invention relates to an optical lens, in particular to a zoom optical lens for a line array detector. Background technique [0002] A zoom lens is a camera lens that can change the focal length within a certain range to obtain different wide and narrow field of view angles, different size images and different scene ranges. The zoom lens can change the shooting range by changing the focal length without changing the shooting distance, so it is very beneficial to the composition of the picture. Since one zoom lens can also act as several fixed-focus lenses, it not only reduces the number of photographic equipment to carry when going out to work, but also saves the time for changing lenses. [0003] A near-infrared detector with a filter does not need to have a clear image, but only needs to accept a certain range of light. When collecting near-infrared spectra outdoors, sometimes it is necessary to change the focal length and field of view accordin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B15/167
CPCG02B15/167
Inventor 王丽丽陈建树赵国鹏张维林李永富赵显房常峰
Owner SHANDONG UNIV