Solar blind ultraviolet imaging optical lens and system

A technology of ultraviolet imaging and optical lens, which is applied in the field of sun-blind ultraviolet imaging optical lens and system, can solve the problems of large volume and complex structure, and achieve the effects of high imaging quality, high light energy utilization rate and good manufacturability

Inactive Publication Date: 2017-09-29
长春国科精密光学技术有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a sun-blind ultraviolet imaging optical lens and system to solve the problems of complex structure and large volume in the prior art of solar-blind ultraviolet imaging optical lens and system

Method used

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  • Solar blind ultraviolet imaging optical lens and system
  • Solar blind ultraviolet imaging optical lens and system
  • Solar blind ultraviolet imaging optical lens and system

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Embodiment 2

[0047] In embodiment 2, the meniscus lens 2 material is CaF 2 The material has a caliber of 68 mm in diameter, a concave spherical surface on the front surface, and a convex spherical surface on the rear surface. Compared with the aspherical element, the spherical element is easier to manufacture, has low cost, and has good manufacturability. The ring area on the rear surface is coated with a high-reflection UV film, the outer diameter of the ring is 78mm, and the inner diameter is 20mm.

[0048] like image 3 As shown, the ultraviolet radiation emitted by the target at infinity is received by the optical system, and the light is refracted through the front and rear surfaces of the first meniscus lens 1 in turn, and reaches the front surface of the second meniscus lens 2; then passes through the front of the second meniscus lens 2 in turn Surface refraction, rear surface annular coating area reflection, front surface refraction, reaching the back surface of the first meniscus...

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Abstract

The invention provides a solar blind ultraviolet imaging optical lens and a system. The solar blind ultraviolet imaging optical lens comprises a first meniscus lens piece and a second meniscus lens piece sequentially from an object side to an image side; the optical surfaces of the first meniscus lens piece and the second meniscus lens piece are spherical surfaces; one optical surface of the first meniscus lens piece is coated with a round ultraviolet reflection film; the rear surface of the second meniscus lens piece is coated with a round ultraviolet reflection film; and thus, to-be-detected light is outputted by the center of the second meniscus lens piece through reflection by the first meniscus lens piece and the second meniscus lens piece. As the solar blind ultraviolet imaging optical lens only comprises two spherical meniscus lens pieces, the optical elements in the solar blind ultraviolet imaging optical lens are few, and the utilization rate of light energy is high; the optical surfaces of the two meniscus lens pieces are both spherical surfaces, an aspheric surface is not needed, the manufacturing cost is low, and the technological performance is good. For the two meniscus lens pieces, hole opening in the center is not needed, and the manufacturing process is simple.

Description

technical field [0001] The invention belongs to the technical field of optical instruments, in particular to a sun-blind ultraviolet imaging optical lens and system. Background technique [0002] Ultraviolet imaging technology has a very broad application in electricity, criminal investigation and forest fire prevention. Most of the ultraviolet imaging lenses currently used are pure refraction objective lenses, and the overall length of the imaging optical path is longer than the focal length of the objective lens, which is not conducive to the miniaturization of the instrument; a small number of small-field objective lenses adopt a Cassegrain-like imaging structure, although this structure can be reduced by folding the optical path. The length of the system is small, but it is necessary to open a hole in the center of the aspheric primary mirror. In addition, in order to balance the off-axis aberration, it is necessary to add 1-2 field mirrors near the image plane. This kin...

Claims

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Application Information

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IPC IPC(8): G02B13/00
CPCG02B13/005
Inventor 田志辉崔穆涵陈雪张巍杨怀江
Owner 长春国科精密光学技术有限公司
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