Multi-optical-axis optical system, multi-optical-axis parallelism adjusting method thereof, infrared thermal imager and adjusting device thereof

Abstract

The invention provides a multi-optical-axis optical system, a multi-optical-axis parallelism adjusting method thereof, an infrared thermal imager and an adjusting device thereof. The multi-optical-axis optical system comprises a reference optical module and one or more adjusting optical modules. The multi-optical-axis optical system is characterized in that the multi-optical-axis optical system further comprises a reference optical module seat, one or more adjusting optical module seats, and one or more adjustment mechanisms. The system, infrared thermal imager and the adjusting device are simple and light in structure and can accurately and quickly adjust the parallelism among multiple optical axes even under the condition of artificial visual recognition; an adjusting effect is easy to quickly recognize; no special requirements are exerted on the detection environment; and simplicity in detection operation is realized.

Description

technical field [0001] The invention relates to the field of optical system measurement, in particular to a multi-optical axis optical system and a method for adjusting parallelism of multi-optical axes, an infrared thermal imager and an adjustment device thereof. Background technique [0002] In order to meet special needs, multi-functional optoelectronic equipment integrating multiple photoelectric sensors has appeared in modern optoelectronic equipment, for example, modern military optoelectronic weapon equipment including multiple photoelectric sensors such as TV, infrared, and laser; and for example, including Infrared thermal imager with dual optical path technology for infrared module and visible light module, etc. Due to the integration of multiple optical instruments, the problem of parallelism of the optical axes among many optical systems will inevitably arise. Taking the infrared thermal imager with dual optical path technology as an example, the dual optical pa...

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Problems solved by technology

However, the above-mentioned method in the prior art has the following disadvantages: (1) the projection target method can only adjust the optical axis at night or on cloudy days; (2) the large-diameter collimator is difficult to manufacture and heavy, and cannot be transported to the field In addition, it is difficult to detect the parallelism of large-diameter and high-precision beams; (3) the system assembly of the laser detector method is difficult and highly specific; (4) the characteristic direction of the pentagonal mirror in the test movement process in the pentagonal mirror method Any change in the optical axis will cause the deviation of the optical axis, resulting in additional measurement errors and affecting the final measurement accuracy. This kind of random error is difficult to control

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