Long linear array push-broom infrared thermal imaging system based on inclined special-shaped cold shield

Abstract

The invention discloses a long linear array push-broom infrared thermal imaging system based on an inclined special-shaped cold shield, which is composed of a primary mirror, a secondary mirror, a turning focusing mirror, a tertiary mirror, a mechanical structure, a long linear array infrared focal plane, the inclined special-shaped cold shield and a linear array infrared focal plane detector. Light beams from a target sequentially pass through the primary mirror, the secondary mirror, the turning focusing mirror, and the tertiary mirror and are finally imaged on the linear array infrared focal plane detector. The exit pupil of an optical system is located before the linear array infrared focal plane detector, which is perfectly matched with the inclined special-shaped cold shield and realizes 100% cold stop. The system is compact in structure, light in weight, small in size, simple in processing and debugging, and can be used for high-sensitivity infrared thermal imaging detector, and is particularly suitable for aerospace large-caliber high-resolution infrared thermal imaging application.

Description

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AI Technical Summary

Benefits of technology

The technology described by this patented solution allows an object being detected (the target) to have two images - one on top of another – that match up well when viewed from different angles or directions respectively. This makes possible precise measurements over longer distances without relying solely upon multiple cameras. It also includes features like secondary imagery and positioned behind the camera's line of sight, making them ideal for detecting objects at short range. Overall, these improvements make the device more efficient than previous methods while still providing accurate results even under challenging conditions such as low temperatures during flight operations.

Problems solved by technology

The technical problem addressed by this patented technology relates to improving upon traditional methods used during manufacturing or assembly processes such as cooling an object with liquid nitrogen (LN2) before mounting it into another structure like a spectrometer housing. These techniques have limitations due to factors including temperature differences caused by different materials being processed at high temperatures, difficulty achieving proper alignment between the device itself and other structures while also reducing its size without adding extra parts.

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