Novel infrared focal plane array imaging optical system

Abstract

The invention provides a novel infrared focal plane array imaging optical system, which comprises a light source 1, a specially-shaped prism 2, an infrared focal plane array 3, a filter 4 and an imaging lens 5. The novel infrared focal plane array imaging optical system has the imaging characteristics that divergent light is emitted from the light source 1, enters the specially-shaped prism 2, and is converged through a surface a of the specially-shaped prism 2 and split into two beams by an adhesion surface e of the specially-shaped prism 2; one of the beams is collimated and emitted through a surface b of the specially-shaped prism 2 and lightens the infrared focal plane array 3 in parallel, and the other beam is emitted out of an optical read-out system through a surface c of the specially-shaped prism 2; the beam which lightens the infrared focal plane array 3 in parallel is reflected by the infrared focal plane array 3 with infrared image information, re-passes through the surface b of the specially-shaped prism 2 and is converged; converged light penetrates through the surface e of the specially-shaped prism 2, and is converged and emitted through a surface d of the specially-shaped prism 2 and then focused on the filter 4; and light which is filtered by the filter 4 is focused and imaged on an image plane 6.

Description

Technical field [0001] The invention relates to a read-out optical path system of an uncooled infrared focal plane array imaging system, in particular a special-shaped prism structure combining a prism and an aspheric surface is used to integrate the functions of optical parts in the optical system, optimize the read-out optical path structure, and enable The system performance has been further improved, and the volume and weight have been greatly reduced. Background technique [0002] The optical readout micro-cantilever focal plane array (FPA) thermal imaging system based on MOEMS technology is the process of realizing infrared light-thermomechanical deformation-irradiating visible light reflected light intensity change-restoring the image. In theory, the NETD of the optical readout infrared focal plane array imaging system can be far superior to the electrical readout infrared focal plane array imaging system. However, according to the current domestic and foreign technical da...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an optimized and integrated uncooled infrared focal plane array for the problems that the optical system of the uncooled infrared focal plane array imaging system has a complex structure, a large number of parts, a large volume, and a large weight, which is not conducive to the promotion of engineering applications. Imaging system Optical readout system

Images