Method for seamlessly splicing 3*3 plane array detector by adopting total reflection prisms

Abstract

The invention relates to a method for seamlessly splicing 3*3 plane array detectors by adopting total reflection prisms, which realizes the seamless splicing of image planes formed by combining 3*3 mode nine plane array detectors. The total reflection prisms are combined to realize the image plane light splitting, three plane array detectors are arranged on an optical-axis vertical transmission image plane, and six plane array detectors are arranged on four side planes. The prisms are simple in structure, and no energy is lost after total-reflection total-transmission light splitting. The splicing of image planes is realized by combining small-scale plane array detectors, thus the demand of the large-scale or super-large scale plane array detectors can be met. The method can be applied to the aerospace optical imaging and optical detection instrument and equipment, in particular to the aerospace imaging photoelectric system suitable for the super-large scale plane array detectors.

Description

technical field [0001] The invention belongs to an imaging photoelectric system for seamless splicing of ultra-large area array detectors, in particular to a method for seamless splicing of 3×3 area array detectors by using a total reflection prism. Background technique [0002] With the development of aviation and aerospace technology, the demand for photoelectric imaging systems with large area arrays and ultra-large area arrays is becoming more and more urgent. Two methods are often used to realize large-scale area array imaging. One is to customize ultra-large-scale area array detector devices at the area array detector manufacturer, and the other is to use area array detectors to splice. At present, the scale of single-chip large area array detectors in the world is about 17k×15k (DMC250), which is not a commodity on the shelf, and the application cost is expensive. In addition, further increasing the scale of single-chip area array detectors is also a technical bottle...

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Problems solved by technology

[0004] Chen Xunan et al. In the focal plane optical splicing technology of multi-slice area CCD image sensor, the single-lens optical splicing method can realize the splicing of multi-slice area CCD, but the number of light splitting is too many, the loss of light energy is serious, and the working distance behind the optical system is required to be large. However, it cannot be realized in the large field of view surveying and mapping camera system or there is a serious shortage of light energy

[0005] Chinese invention patent CN 101650423B’s optical splicing of large area array photoelectric devices can only realize the splicing of area array detectors in 2×3 or 2×2 mode, and cannot realize the splicing of more area array detectors or larger-scale area array detectors

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