Infrared and visible light cross target for external field observation and calibration

Abstract

The invention discloses an infrared and visible light cross target for external field observation and calibration. The target comprises a target box, a visible light source, an infrared radiation light source, a cross light source rotating device, a positioning light source and a power supply. The cross light source rotating device is arranged in a cross-shaped window in the center of one side ofthe target box, and is used for achieving switching between visible light and infrared light. When the cross light source rotating device is switched to a certain light source, the light source electrode arranged on the cross light source rotating device makes contact with the power source electrode arranged on the inner side of the cross window, the other light source is disconnected while the light source is connected, energy consumption is reduced, and outdoor endurance is facilitated. The positioning light source is arranged on the other side of the target box and irradiates the detectionarray target through a light passing window arranged on the side to form a positioning light spot so as to determine the relative position of the center of the cross target and the center of the detection array target. The target is simple in overall structure, convenient to use, small in occupied space and good in matching with the target surface of the detection array, and the convenience and accuracy of measurement are improved.

Description

technical field [0001] The invention belongs to the field of laser detection, in particular to an infrared and visible light cross target used for field observation and calibration. Background technique [0002] The existing laser spot test method in the field requires a dense detector array target to receive and collect the laser spot at a distance. The reticle of the visual or infrared sighting device configured with the laser transmitter is used for center positioning. However, the field of view of the visual sighting device is generally very small. At noon when the light is too strong or in the evening / night when the light is too dark, the resolution of the field of view of the visual sighting device is not enough to determine the position of the target board, and the infrared sighting device also cannot Sufficient temperature difference is required, so visible light or infrared crosshairs are generally used to determine the center of the optical axis. In August 2016, ...

AI Technical Summary

Problems solved by technology

In August 2016, the Journal of Changchun University of Science and Technology published an "Outfield Test Method for Multi-Optical Axis Parallelism Based on Laser Point Array Detection", which mentioned that infrared and visible light reticles are used for long-distance viewing and sighting, but the sighting target is different from the The laser sensor targets are on the same target surface. There is no laser sensor on the small target block of the reticle, and it occupies a large amount of the center of the target surface, so that there is obvious data loss in important positions, the sensor density is insufficient, and the infrared reticle needs to be heated, so that the temperature of the target surface changes. It is large and uneven, which has a great impact on the precise sensor and circuit linearity, and will inevitably affect the measurement accuracy, and there is no specific description of the structure of the crosshair

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