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Solar blind ultraviolet optical lens and system

An ultraviolet light and lens technology, which is applied in optics, optical components, instruments, etc., can solve the problem that interference type ultraviolet filters cannot meet the filtering requirements of solar-blind ultraviolet imaging systems, and can meet the needs of long-distance detection and reduce Volume, cost saving effect

Active Publication Date: 2016-03-02
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0007] The invention provides a solar-blind ultraviolet optical lens and system, which effectively solves the problem that the interference type ultraviolet filter cannot meet the filtering requirements of a solar-blind ultraviolet imaging system, not only saves costs, but also meets the requirements of long-distance detection

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

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Embodiment Construction

[0027] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is for the purpose of illustration only, and in no way limits the invention and its application or usage.

[0028] In the prior art, the filters used in solar-blind ultraviolet imaging systems are mainly absorbing ultraviolet filters and interference ultraviolet filters. As the detection distance increases, the imaging system's cut-off requirements for background light also increase accordingly. At this time, the absorbing ultraviolet filter can meet the filtering requirements, but the price is expensive, the procurement cycle is long, and the complexity of the system design is increased. Interference-type UV filters cannot meet the filtering requirements, but they are cheap. Therefore, there is an urgent need for a filter solution that can save costs and meet the needs of long-distance detection wit...

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Abstract

The invention discloses a solar blind ultraviolet optical lens and system. The lens comprises a first positive lens, a reflector with a central through hole, a negative lens and a second positive lens which are arranged from an object side to an image side. An ultraviolet waveband transmission film is coated on one surface, which is back to the reflector, of the first positive lens. One surface, which faces the reflector, of the first positive lens comprises a first emergent surface, a first reflecting surface and a second emergent surface which are arranged from the top to the bottom. The ultraviolet waveband transmission film is coated on the two surfaces of the negative lens. The ultraviolet waveband transmission film is coated on one surface, which faces the negative lens, of the second positive lens, wherein the ultraviolet waveband transmission film is a film system with high transmittance for 240nm-280nm and high blocking for 280nm-600nm. The system comprises the lens, an interference type ultraviolet optical filter and an image surface. The filtering function of the solar blind ultraviolet optical system is realized by performing film coating on different lenses of the optical lens with combined use of the interference type ultraviolet optical filter.

Description

technical field [0001] The invention relates to the field of photoelectric imaging detection, in particular to a sun-blind ultraviolet optical lens and system. Background technique [0002] In solar-blind ultraviolet imaging detection, since the solar-blind ultraviolet light generated by the target to be measured is generally weak, high-sensitivity ultraviolet imaging detectors are generally used in solar-blind ultraviolet imaging systems. In order to ensure that the ultraviolet imaging detector can effectively image in the solar-blind ultraviolet band in the sunlight environment and avoid the influence of strong solar radiation outside this band, it is necessary to use in-band high-pass and out-of-band depth cut-off in the solar-blind ultraviolet imaging system. filter. [0003] At present, the filters used in solar-blind ultraviolet imaging systems are mainly absorbing ultraviolet filters and interference ultraviolet filters. Among them, the absorbing ultraviolet filter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B17/08G02B1/11
CPCG02B1/115G02B17/0892
Inventor 宋亚军唐义刘家国
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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