Variable focus optical imaging system
An optical imaging system and a variable technology, applied in the field of optics, can solve the problem of low reuse rate of multiple scenes, achieve the effect of increasing the reuse rate and reducing production
Active Publication Date: 2021-07-30
广州市焦汇光电科技有限公司
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[0005] Based on this, it is necessary to provide a variable-focus optical imaging system for the low reuse rate of multiple scenes in the traditional variable-focus optical imaging system.
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] It should be noted that all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0042] refer to figure 1 , figure 1 It is a structural schematic diagram of a variable-focus optical imaging system ...
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The present invention relates to a variable focus optical imaging system. The system includes in sequence from the object side to the image side: a pattern display sheet, a first lens group and a second lens group; the longest focal length of the variable focus optical imaging system and the The ratio of the shortest focal length of the system is greater than or equal to 1.75; the ratio of the longest focal length of the system to the focal lengths of the first lens group and the second lens group is greater than or equal to 1.75; the first lens group is formed by the pattern display sheet A first lens and a second lens are sequentially arranged on the image side; the refractive power of the first lens is negative, and the refractive power of the second lens is positive; the second lens group consists of the pattern A third lens and a fourth lens are arranged in sequence from the display sheet to the image side; the refractive power of the third lens is negative, and the refractive power of the fourth lens is positive. The above solution not only reduces the production and design costs of the enterprise, but also improves the reuse rate of the adjusted imaging system in multiple scenarios.
Description
technical field [0001] The invention relates to the field of optics, in particular to a variable-focus optical imaging system. Background technique [0002] At present, optical imaging systems such as pattern projection lamps and imaging lamps are widely used in various scenes. They mainly illuminate patterns through light sources, and then use optical lenses to adjust the light to achieve clear projection of patterns. [0003] The traditional optical imaging system, due to its targeted system design, cannot make one mode structure available in multiple places, and must make optical adjustments according to different application scenarios, that is, adjust the focal length and number of lenses, light output angle, light source power, etc., resulting in The generation cost of the optical imaging system is high, and the reuse rate of multiple scenes is low. [0004] Therefore, the traditional optical imaging system has the problem of low reuse rate of multiple scenes. Conten...
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IPC IPC(8): G02B15/177
Inventor 尹勇健
Owner 广州市焦汇光电科技有限公司