Zoom infrared optical system, zooming device and manufacturing method thereof
An infrared optical system and variable focal length technology, applied in optics, optical components, installation, etc., can solve the problems of limited field of view and the number of moving components, long axial length of zoom lens group, and limited freedom of optical design. , to achieve the effect of increasing the telephoto transmittance, reducing the number of system lenses, and improving the detection ability
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[0045] The present invention will be further described in combination with the drawings and embodiments as follows:
[0046] Such as figure 1 , 2 Figure 3 shows an embodiment of a zoom infrared optical system of the present invention:
[0047] A zoom infrared optical system, which has a telephoto lens group 1 and a zoom lens group 2. The lens materials are optical materials that can work in the infrared band; the telephoto lens group 1 consists of a front fixed lens group 1.1 and The rear fixed lens group 1.2 is composed; the variable power lens group 2 is located between the front fixed lens group 1.1 and the rear fixed lens group 1.2: when telephoto imaging, the variable power lens group 2 is located in the front fixed lens group 1.1 and the rear fixed lens group 1.2 When zooming the image, the variable magnification lens group 2 is linearly cut into the optical path between the front fixed lens group 1.1 and the rear fixed lens group 1.2 through the parallel movement of the cont...
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