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High-stability high-energy laser receiving lens

A technology of laser receiving and high stability, applied in the laser field, can solve the problems of weak received laser energy and difficult to meet miniaturization requirements, and achieve the effect of reducing processing cost, satisfying detection distance and angle detection accuracy, and large relative aperture.

Active Publication Date: 2017-03-22
HEBEI HANGUANG HEAVY IND
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The prior art discloses similar laser receiving lens patents, most of which are not designed for four-quadrant detectors, but four-quadrant detectors are widely used in the field of laser guidance due to their low cost advantages, and the relative aperture of a few related lenses is compared with the present invention Small, the receiving laser energy is weak, or it is difficult to meet the miniaturization requirements

Method used

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  • High-stability high-energy laser receiving lens

Examples

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Embodiment 1

[0027] A high-stability, high-energy laser receiving lens, such as figure 1 As shown, the optical system of the lens is respectively provided with a diaphragm 1, a narrow-band interference filter 2, a first double-convex lens 3, a second convex-concave lens 4, a third double-concave lens 5, and a fourth double-convex lens along the incident direction of light from left to right. Convex lens 6 and the 5th convex-concave lens 7, six lenses are coaxial, four-quadrant detector 8 is positioned on the focal plane of the combined focal length of six lenses, and the center of the detection surface of four-quadrant detector 8 is positioned at the light of six lenses On the axis, the diaphragm 1 is located on the front surface of the narrow-band interference filter 2 .

[0028] The laser beam reflected by the target focuses the light energy on the four-quadrant detector 8 through the optical system, and the four-quadrant detector 8 converts the received optical signal into an electrical...

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Abstract

The invention discloses a high-stability high-energy laser receiving lens which performs detection of a target together with a four-quadrant detector. The laser receiving lens includes a diaphragm and a narrow-band interference filter, a first biconvex lens, a second biconcave lens, a third biconcave lens, a fourth biconvex lens and a fifth convex-concave lens which are coaxially arranged from left to right; the diaphragm is arranged on the surface of the left side of the narrow-band interference filter; and the four-quadrant detector (8) is coaxially arranged on a focal plane of the right side of the fifth convex-concave lens. The high-stability high-energy laser receiving lens provided by the invention solves the problems of large relative aperture, high-uniformity light spots and low distortion of a laser receiving lens, and proposes the high-stability high-energy laser receiving lens on the premise of satisfying miniaturization.

Description

technical field [0001] The invention belongs to the field of laser technology and is used together with a four-quadrant detector to realize target detection. Background technique [0002] Laser semi-active homing guided missiles are characterized by high guidance precision, strong anti-interference ability, relatively simple structure, low cost, and convenient use, and have been widely used in actual combat. The core device of the laser semi-active homing guided missile is the seeker. The optical lens is located at the front end of the seeker. Its function is to receive and converge the laser beam reflected by the target, so that the target azimuth information is converted into a laser spot and imaged on the detector. . The performance of the optical lens not only affects the detection range of the seeker, the ability to search and track targets, but more importantly, directly affects the accuracy of its detection of target azimuth, thus affecting the combat effectiveness o...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/00
Inventor 赵翠玲
Owner HEBEI HANGUANG HEAVY IND
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