Infrared continuous zoom lens zoom mechanism based on linear motion mechanism
A zoom lens, linear motion technology, applied in installation, optics, instruments, etc., can solve problems such as low structural complexity, and achieve the effects of high imaging quality, wide applicability, and ease of use
Pending Publication Date: 2019-06-14
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
[0003] The purpose of the present invention is to overcome the existing shortcomings, to provide a compact structure, simple control, low cost infrared continuous zoom lens zoom mechanism based on linear motion mechanism, suitable for infrared large zoom ratio continuous zoom lens, its infrared lens zoom The motion curve does not need smooth fitting processing, the lens or lens group can reciprocate, the motion curve can be irregular, the processing is simple, the structure complexity is low, the mechanism is prevented from being stuck during motion, the concentricity is high, the zoom precision is high, and high vibration can be achieved Self-locking in the environment, more suitable for mature market use and scientific research use, to achieve high-quality infrared large zoom ratio high-precision continuous zoom imaging
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[0020] Provide a preferred embodiment of the present invention below in conjunction with accompanying drawing, mainly describe in further detail the characteristics of the present invention, but not be used for limiting the scope of the present invention:
[0021] see figure 1 , figure 2 and image 3 , the infrared continuous zoom lens zoom mechanism based on the linear motion mechanism, including the zoom lens supporting moving part 1, the zoom lens assembly one 2, the zoom lens assembly two 3, the zoom lens assembly three 4, and the rear optical assembly 5; it is characterized in that:
[0022] see Figure 4, zoom lens support moving part 1 includes a base 1-1, a front lens assembly 1-2, a rear fixed support 1-3, a right linear guide 1-4, a left linear guide 1-5, and a stopper in the middle of the left zoom guide 1-6, the middle limit piece 1-7 of the right zoom guide rail; its structure is: the optical lens is installed in the center hole of the front lens assembly 1-2,...
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The invention discloses an infrared continuous zoom lens zoom mechanism based on a linear motion mechanism. The zoom mechanism is suitable for various zoom lenses, especially an infrared large zoom ratio continuous zoom lens needing the optical lens or optical lens assembly to reciprocate and an irregular motion curve; the zoom motion curve is free from performing smooth fitting processing, a linear guide rail and a linear motor with a ball screw mechanism can be used as the drive, thereby realizing the mechanism self-locking under a complex vibration environment, and the imaging quality is high.
Description
technical field [0001] The patent of the present invention relates to a zoom mechanism of an infrared continuous zoom lens, in particular to a zoom mechanism of an infrared continuous zoom lens based on a linear motion mechanism. Background technique [0002] The infrared continuous zoom lens refers to an optical lens that uses the movement of the infrared lens in the optical system to continuously change the combined focal length of the infrared optical system. The zoom ratio of the infrared continuous zoom lens developed at present is not high, and the structure adopts the traditional space cam mechanism to realize the movement of the infrared lens. It cannot reciprocate, the motion curve cannot be irregular, and the smoothing process needs to be sacrificed for precision. The processing is complicated and the assembly is difficult. Disadvantages, for the infrared large zoom ratio continuous zoom lens, the infrared lens or lens group needs to reciprocate, the movement curve...
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IPC IPC(8): G02B7/04G02B15/14
Inventor 周潘伟于洋李范鸣
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI