A long-wave infrared composite optical system
A long-wave infrared and optical system technology, which is applied in the field of long-wave infrared composite optical systems, can solve problems such as complex structure of traditional optical systems, immature production technology of metasurface elements, incompatibility of design optimization algorithms of metasurface elements, etc., and achieve the expansion of optimization solutions The effects of space, optimized field of view characteristics, and streamlined structure
Active Publication Date: 2021-01-19
HUAZHONG UNIV OF SCI & TECH
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[0011] In view of the defects of the prior art, the purpose of the present invention is to solve the technical problems of complex structure of traditional optical system, immature production process of metasurface element and incompatibility between metasurface element and traditional optical element design optimization algorithm
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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.
[0042] The present invention provides a high-resolution and small-volume long-wave infrared composite optical system, the purpose of which is to use dual-cascaded metasurface elements to regulate the wavefront of incident infrared radiation and realize the correction of advanced aberrations and off-axis aberrations of the system , use the traditional lens group to correct the primary aberration ...
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Abstract
The invention discloses a long-wave infrared composite optical system. The system is characterized by comprising a dual-cascaded metasurface element, a lens group and an infrared focal plane detector,wherein the dual-cascaded metasurface element includes a first metasurface, a second metasurface and a dielectric substrate layer, the first metasurface and the second metasurface are respectively disposed on a front surface and a rear surface of the dielectric substrate layer, the dual-cascaded metasurface element is used for regulating the wavefront of the incident light and emitting the lightafter correction of the high-level aberration of the incident light, the wavelength of the incident light is in a long-wave infrared band, the lens group is placed on one light emitting side of the dual-cascaded metasurface element, the lens group is used for correcting the primary aberration of the incident light and focusing the light before emitting, the infrared focal plane detector includes adetector window and an infrared focal plane array sequentially arranged along the optical axis, the detector window is used for filtering the stray light of the system and the light except the detection band, and the infrared focal plane array is used for detecting and imaging the focused infrared incident light. The system is advantaged in that the structure is simplified, and the process is further optimized.
Description
technical field [0001] The invention relates to the fields of infrared imaging optics and micro-nano photonics, and more specifically, relates to a long-wave infrared composite optical system. Background technique [0002] Infrared imaging technology is an important part of the field of imaging optics, widely used in security, monitoring, medical, industry, agriculture, surveying and mapping remote sensing, aerospace, detection and guidance and other fields related to the national economy and people's livelihood. With the advancement of science and technology, the current development trend of a new generation of infrared optical imaging systems can be summarized in the following two aspects: [0003] First, high-performance and high-quality imaging effects, such as ultra-high-resolution imaging and near-diffraction-limit imaging. Achieving these requirements requires better correction of advanced aberrations and off-axis aberrations. At present, the commonly used solutions ...
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IPC IPC(8): G02B1/00G02B5/00G02B13/14G02B1/02
CPCG02B1/002G02B1/02G02B5/00G02B13/14
Inventor 易飞张恒侯铭铭
Owner HUAZHONG UNIV OF SCI & TECH