A Miniaturized Uncooled Infrared Continuous Zoom Optical System with Large Target Surface

An uncooled infrared and optical system technology, which is applied in the field of large target surface miniaturized uncooled infrared continuous zoom optical system, and can solve the problems of no continuous zoom optical system

Active Publication Date: 2021-09-14
凯迈(洛阳)测控有限公司
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  • Abstract
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Problems solved by technology

[0003] At present, with the continuous progress of uncooled infrared technology, uncooled infrared detectors are also developing rapidly in the direction of high performance and low cost. They are mainly used to meet the requirements of high sensitivity, high resolution, high frame frequency and The need to replace some cooled detectors; domestic uncooled infrared detectors have been mass-produced as 1024×768 long-wave uncooled infrared detectors with a pixel size of 14 μm, but currently there is no long-wave uncooled infrared detector that can adapt to 1024×768 long-wave uncooled detectors Continuous zoom optics for the detector

Method used

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  • A Miniaturized Uncooled Infrared Continuous Zoom Optical System with Large Target Surface
  • A Miniaturized Uncooled Infrared Continuous Zoom Optical System with Large Target Surface
  • A Miniaturized Uncooled Infrared Continuous Zoom Optical System with Large Target Surface

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specific Embodiment

[0061] The specific technical indicators realized by the system are shown in Table 1:

[0062]

[0063]

[0064] Table 1

[0065] Among them, F # (Optical system F number) The calculation formula is f / D, f is the focal length of the optical system, and D is the diameter of the entrance pupil.

[0066] The detailed data of the optical system of the present invention when the focal length is 30mm~90mm is shown in Table 2:

[0067]

[0068] Table 2 lists the surface type, radius of curvature, thickness, caliber, and material of each lens; among them, the unit of radius of curvature, thickness, and caliber of the lens is mm, the unit of weight is g, and the radius of curvature of spherical and aspheric surfaces refers to is the radius of curvature at the intersection of the lens surface and the optical axis. Among them, the "surface serial number" in Table 2 is counted along the direction of light propagation, such as the beam incident surface of the first meniscus pos...

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Abstract

A miniaturized uncooled infrared continuous zoom optical system with a large target surface, comprising a first meniscus positive lens, a biconcave negative lens, a biconvex positive lens, a second meniscus positive lens, a third meniscus positive lens, detector; the lens adopts a refraction-diffraction hybrid system, and through the reasonable distribution of the focal power of each lens, the number of system lenses, the volume of the system, and the weight of the system are reduced; the zoom curve of the system is smooth and continuous, effectively avoiding The stagnation phenomenon occurs during the zooming process; the method of axially moving the third meniscus positive lens realizes the defocus compensation of the image plane in the temperature range of -40°C ~ +60°C and the distance change of the observed object. Focus compensation ensures clear imaging of objects at different distances and avoids system complexity caused by uncooled design; the large target surface miniaturized uncooled infrared continuous zoom optical system of the present invention fills the gap in the domestic market for 1024×768 Blank continuous zoom optics for long-wavelength uncooled detectors.

Description

technical field [0001] The invention relates to the field of large target surface uncooled infrared optical systems of airborne photoelectric equipment, in particular to a large target surface miniaturized uncooled infrared continuous zoom optical system. Background technique [0002] Uncooled infrared detectors have the advantages of low price, small size, light weight, low power consumption, and high reliability. Therefore, they are more and more widely used in military and civilian fields such as security monitoring and vehicles. [0003] At present, with the continuous progress of uncooled infrared technology, uncooled infrared detectors are also developing rapidly towards high performance and low cost, mainly used to meet the needs of military equipment with high sensitivity, high resolution, high frame frequency and The need to replace some cooled detectors; domestic uncooled infrared detectors have been mass-produced as 1024×768 long-wave uncooled infrared detectors w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B15/173
CPCG02B15/173
Inventor 吴海清周桢刘志广
Owner 凯迈(洛阳)测控有限公司
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