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Concentric spherical objective detector spherical array video acquisition device

A technology of video acquisition device and detector array, which is applied in the fields of instruments, optics, wide-screen photography, etc., can solve the problems of limited spherical lens imaging and insufficient detector size, and achieve improved pixel utilization, good real-time performance, The system is stable and reliable

Active Publication Date: 2017-06-09
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to propose a concentric spherical objective lens detector spherical array video acquisition device, which solves the problems of insufficient detector size and limited spherical lens imaging in the prior art, and realizes spherical seamless splicing imaging

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  • Concentric spherical objective detector spherical array video acquisition device
  • Concentric spherical objective detector spherical array video acquisition device
  • Concentric spherical objective detector spherical array video acquisition device

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Embodiment 1

[0023] See attached figure 2 , The concentric spherical objective lens consists of 7 spacers, 6 layers of glass medium, and the center is a glass ball made of low dispersion material, which provides positive optical power for the objective lens, and an air spacer is also included in the design, This interval provides effective help for correcting spherical aberration and chromatic aberration; the design parameters of the objective lens are: field of view 120°, focal length 280mm, F / # 2.8, working waveband 450nm~680nm visible light band, total length 400mm, radius of spherical image surface is 280mm.

[0024] refer to image 3 (a), the horizontal angular distance between the center points of adjacent detectors in the same row is 25.6°, then α=25.6° / 3=8.53°, in the first group of imaging system 1, the intersection of the optical axis and the image plane is the image plane center point, the horizontal and pitch angle coordinates of the center point are (0,0), there are 3 detec...

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Abstract

The concentric spherical objective lens detector spherical array video acquisition device belongs to a large field of view digital imaging system, and aims to solve the problems of insufficient detector size and limited spherical lens imaging in the prior art. The invention includes three groups of imaging systems, each group of imaging systems includes a concentric spherical objective lens and a corresponding image plane detector array, the concentric spherical objective lenses of the three groups of imaging systems are completely the same, the shooting areas are completely consistent, and the image planes are all spherical curved surfaces. The shape of the photosensitive area of ​​each detector on the detector array is a regular hexagon or any shape containing the hexagon, the detector array is distributed in a hexagon, and the central horizontal angle of two adjacent detectors is not greater than that of each detector. 3 times of the photosensitive horizontal angle, and greater than the packaging angle of the center line direction of the two detectors; the three sets of detector arrays are staggered and complementary to each other, and the images obtained by the three sets of imaging systems are spliced ​​to obtain a complete high-resolution video with a large field of view image.

Description

technical field [0001] The invention belongs to a large field of view digital imaging system, in particular to a concentric spherical object lens detector spherical array video collection device. Background technique [0002] The Luneburg lens is a concentric spherically symmetric gradient index lens that can image objects at infinity in the full field of view; the advantages of this objective lens are: first, all surfaces of the objective lens share a center of curvature, that is, spherical symmetry, The imaging beams in all directions are completely symmetrical, and the imaging spots on the image surface are exactly the same, which naturally makes the field of view of this type of lens large; secondly, the image surface of the lens is a spherical surface, and the center of curvature is also the same as the curvature of the optical surface of the lens. The center is on the same position coordinate point, the angular magnification of the lens is 1, and there is no other aber...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B37/04
Inventor 庞武斌贾树强张广许伟才黄玮
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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