A continuous zoom optical system with heat dissipation and wide pressure adaptability

An optical system and adaptability technology, applied in the field of continuous zoom optical system, can solve the problem that the optical system cannot realize passive compensation of temperature and air pressure changes at the same time, and achieve the effect of uniform relative illuminance distribution, reduced difficulty, and simple structure

Active Publication Date: 2021-07-27
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0011] In order to solve the technical problem that the existing optical system cannot achieve passive compensation for temperature and air pressure changes at the same time, the present invention provides a continuous zoom optical system with heat dissipation and wide pressure adaptability

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  • A continuous zoom optical system with heat dissipation and wide pressure adaptability
  • A continuous zoom optical system with heat dissipation and wide pressure adaptability
  • A continuous zoom optical system with heat dissipation and wide pressure adaptability

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Embodiment Construction

[0075] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0076] Such as figure 1 As shown, a continuous zoom optical system with adiabatic and wide-pressure adaptability defines that the light is incident from left to right. Mirror group 7, diaphragm 6, middle fixed mirror group 5, compensation mirror group 4, rear fixed mirror group 3 and filter 2; the right side of filter 2 is a continuous zoom optics with heat dissipation and wide pressure adaptability The focal plane 1 (image plane) of the system; the zoom lens group 7, the front fixed lens group 8, the middle fixed lens group 5, the compensating lens group 4, and the rear fixed lens group 3 together constitute a complete imaging system.

[0077] The zoom lens group 7 and the compensating lens group 4 move linearly back and forth synchronously in the direction of the optical axis of the optical system through the drive m...

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Abstract

The invention provides a continuous zoom optical system with heat dissipation and wide pressure adaptability, which solves the problem that the existing optical system cannot realize passive compensation for temperature and air pressure changes at the same time. The system includes a front fixed mirror group, a variable power mirror group, a diaphragm, a middle fixed mirror group, a compensation mirror group, a rear fixed mirror group and a filter arranged coaxially along the light propagation direction. The front fixed mirror group includes sequentially arranged The first positive lens, the first negative lens, the second positive lens, the third positive lens, the second negative lens and the fourth positive lens; the variable power lens group includes the first cemented lens group with negative refractive power and the The fourth negative lens; the middle fixed lens group includes the sixth positive lens, the seventh positive lens and the fifth negative lens arranged in sequence; the compensation lens group includes the second cemented lens group with negative power; the rear fixed lens group includes from The seventh negative lens and the ninth positive lens are arranged in sequence from left to right; the zoom lens group and the compensation lens group can move back and forth along the optical axis synchronously to realize continuous zooming.

Description

technical field [0001] The invention relates to a continuous zoom optical system, in particular to a compact continuous zoom optical system that can be adapted to a high-definition image sensor and has an optical passive athermalization function and wide air pressure adaptability. Background technique [0002] Changes in ambient temperature and air pressure will cause the optical system to defocus and reduce image quality. In order to reduce the impact of temperature and air pressure changes on the imaging quality of the optical system, it is necessary to design the effects of heat dissipation and pressure elimination, that is, to compensate the defocus caused by temperature and air pressure changes through certain mechanical, optical and electronic technologies, so that The optical system maintains good imaging quality in a wide range of temperature and air pressure. [0003] At present, the methods of heat dissipation and depressurization of optical systems mainly include...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/15G02B15/14G02B7/10
CPCG02B7/10G02B15/15G02B15/145
Inventor 曲锐武力曹剑中
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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