CN107588858A - A kind of thermal infrared imager comprehensive debugging test device - Google Patents

Abstract

The invention provides a comprehensive debugging and testing device for an infrared thermal imager, which can undertake the adjustment of a continuous zoom infrared product, the consistency detection of an optical axis and the precise assembly of a motion mechanism. The infrared thermal imager comprehensive debugging test device includes an infrared collimator and testing equipment; the infrared thermal imager to be tested is arranged at the light outlet of the infrared collimator; the infrared collimator includes an off-axis parabolic reflector, Reflecting assembly, target source, eyepiece assembly and CCD camera assembly; wherein there is a deflection reflector located on the reflected optical path of the off-axis parabolic reflector, and the self-aligning reflector is located on the reflective optical path of the refracting reflector; the self-aligning reflector is It is equipped with a total reflection mirror and a half mirror to meet different functional requirements. When using different functions, it switches at the same position in the optical path of the infrared collimator; the test computer drives the infrared thermal sensor to be tested through the motor driver according to the results of image data processing. The imager is calibrated.

Description

A comprehensive debugging and testing device for infrared thermal imager

technical field

The invention relates to a debugging and testing device for an infrared thermal imager.

Background technique

The rapid development of optical technology has formed a powerful field of optical industry and optical technology. Among them, thermal imaging cameras are widely used in various fields of military and national economy because of their strong detection ability and high resolution. In recent years, more and more thermal imaging cameras have been installed on various weapon platforms and become the sights of weapon systems. The aiming ability of the sight is not only affected by the detection and recognition ability of the infrared thermal imager, but also the focus on whether the aiming is accurate and whether the optical axis of the thermal imager is consistent with the loading platform. Therefore, it is necessary to calibrate and detect the optical axis of the infrared camera during installation and adjustment, and the detection accuracy must meet certain requirements.

At present, there are many devices for measuring the performance index of the infrared thermal imager, but there are few devices for the optical axis consistency detection during the debugging process of the infrared thermal imager.

Contents of the invention

The purpose of the present invention is to solve the problem of installation, adjustment and detection of continuous zoom infrared products, and provide a comprehensive debugging and testing device for infrared thermal imagers that can undertake the adjustment of continuous zoom infrared products, the detection of optical axis consistency and the precise assembly of motion mechanisms.

The technical scheme that the present invention proposes is as follows:

The infrared thermal imager comprehensive debugging test device includes an infrared collimator and testing equipment; the infrared thermal imager to be tested is arranged at the light outlet of the infrared collimator; the infrared collimator includes an off-axis parabolic reflector, Reflecting assembly, target source, eyepiece assembly and CCD camera assembly; Described reflecting assembly comprises folding reflector and self-aligning reflector, wherein folding reflector is positioned at the reflective optical path of off-axis parabolic reflector, and self-aligning reflector is positioned at The reflective light path of the folding reflector; the self-aligning reflector is configured with a total reflection mirror and a half-mirror to meet different functional requirements, and switches at the same position in the infrared collimator light path when using different functions: Output infrared and visible collimated light in total mirror mode; in semi-transparent mirror mode, add a standard reflector to the light outlet of infrared collimator to realize self-collimation function; the target source includes light source and target, located in the self- On the reflective focal plane of the quasi-reflector, select the target pattern according to the needs; the light source generates visible light and infrared beams and projects them to the target, and the target is illuminated to form a simulated luminous pattern; the eyepiece assembly and the CCD camera assembly are located in the transmission of the On the focal plane, the eyepiece assembly is used to observe the imaging data with the eyes, and the CCD camera assembly outputs the image of the eyepiece assembly to the test equipment; the test equipment includes a power supply, a test computer, an image acquisition card, and a motor driver; the test computer is connected on the one hand The infrared thermal imager to be tested collects the infrared light image signal output by the infrared parallel light tube; the test computer is connected with the CCD camera assembly through the image acquisition card on the other hand, and collects the visible light image signal output by the CCD camera assembly. Target identification and comparison of the infrared thermal imager to be tested; the test computer adjusts the infrared thermal imager to be tested through the motor driver according to the result of image data processing.

On the basis of the above scheme, the present invention has further optimized as follows:

The off-axis parabolic reflector, reflective assembly, target source, eyepiece assembly and CCD camera assembly are all fixed on the raised working platform through their respective adjustment mirror frames or bases.

The raised working platform is made of cast aluminum.

The targets are a series of targets, providing a variety of target patterns for debugging and testing the infrared thermal imager.

There are two testing computers: one is an infrared image debugging computer, corresponding to the infrared thermal imager to be tested; the other is a visible image testing computer, corresponding to the CCD camera assembly.

The power supply, the test computer and its display are installed in a cabinet.

The light source adopts a halogen lamp, the light emitted by the halogen filament is used as a visible light source, and the infrared light generated by the bulb after being heated is used as an infrared light source.

The present invention has the following advantages:

The comprehensive debugging and testing device for the infrared thermal imager of the present invention has the advantages of scientific design, simple operation, strong visibility and high testing precision.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a schematic diagram of the optical system of the mid-infrared collimator in the half-mirror mode of the present invention.

1-off-axis parabolic reflector, 2-reflector assembly, 201-folding reflector, 202-self-aligning reflector, 3-target source, 4-eyepiece assembly, 5-CCD camera assembly, 6-raised working platform , 7-cabinet, 8-power supply, 9-test computer, 10-image acquisition card, 11-motor driver, 12-continuous zoom infrared thermal imager, 13-(set at the light outlet of infrared collimator) standard reflection mirror.

detailed description

As shown in Figure 1, the comprehensive debugging and testing device of the infrared thermal imager includes an infrared collimator and testing equipment.

The infrared collimator includes an off-axis parabolic reflector 1 , a reflective assembly 2 , a target source 3 , an eyepiece assembly 4 , a CCD camera assembly 5 and a raised working platform 6 . The reflection assembly 2, the target source 3, the eyepiece assembly 4 and the CCD camera assembly 5 are all fixed on the elevated work platform through their respective adjustment mirror frames or bases. The source 3 , the eyepiece assembly 4 and the CCD camera assembly 5 are located on the focal plane of the reflective assembly 2 .

Test equipment comprises cabinet 7, power supply 8, test computer 9, image acquisition card 10, display, motor driver 11, test equipment software, power supply 8, test computer 9 and display are positioned at cabinet 7, and test equipment software, image are housed in the test computer Acquisition card 10 is connected with test computer 9 and CCD camera assembly 5 respectively, and the image signal of CCD camera assembly is collected in the test computer, and the infrared image and visible image that debugging produces can be collected and output by test computer, and test software is collected to The data is processed, and the continuous zoom infrared camera 12 is controlled by sending commands through the test computer, and the motor driver provides an excitation source for the infrared product.

The reflection assembly 2 includes a folding reflector 201 and a self-aligning reflector 202, the folding reflector is located on the emission optical path of the off-axis off-axis parabolic reflector, the self-aligning reflector is located on the reflection optical path of the folding reflector, and the self-aligning reflector is located on the reflection optical path of the folding reflector. The mirror includes a total reflection mirror and a half mirror, which are located at the same position in the optical path of the infrared collimator, and can be switched when using different functions. In the mode of the total reflection mirror, infrared and visible parallel light are output, and the half reflection Auto-collimation function is realized in mirror mode.

The target source includes a light source and a target. The target is a series of targets located on the reflection focal plane of the self-collimating mirror. The target pattern can be selected according to the needs. The light source generates visible light and infrared beams and projects them to the target. The target is illuminated to form a simulated luminous pattern; The eyepiece and the CCD camera assembly are located on the transmission focal plane of the half mirror. The eyepiece is used to observe the imaging data with the eyes, the CCD camera assembly is connected with the eyepiece, and the image of the eyepiece is output to the monitor for easy observation.

The raised working platform is made of cast aluminum, which is light in weight and high in mechanical strength.

The number of test computers is two, one infrared image debugging computer, which collects the images output by the infrared thermal imager, and one visible image test computer, which collects the visible light images differentiated in the infrared collimator for target recognition of the continuous zoom infrared thermal imager Contrast with.

The test equipment software supports video reading and writing, and can save the collected single-frame images, which is convenient for querying images and test data at any time, and can process the collected data to generate corresponding instructions to control the thermal imaging camera motor.

During the installation and adjustment process of the continuous zoom infrared thermal imager, the infrared collimator provides an infinite target and has the function of self-collimation; the image is drawn out through the eyepiece observation or the CCD camera, and the test equipment software performs the image acquisition on the image acquisition card. Storage, recording, display, database management, and data processing; the test computer sends commands to control the infrared thermal imager, and the motor drive provides an excitation source for the infrared product, thereby completing the adjustment of the continuous zoom infrared product, optical Axis consistency detection and precision assembly of motion mechanism.

Claims (7)

1. A comprehensive debugging and testing device for an infrared thermal imager, characterized in that: it comprises an infrared collimator and a testing device; the infrared thermal imager to be tested is arranged at the light outlet of the infrared collimator; The infrared collimator includes an off-axis parabolic mirror, a reflection assembly, a target source, an eyepiece assembly and a CCD camera assembly; the reflection assembly includes a folding mirror and an auto-alignment mirror, wherein the folding mirror is located off-axis The reflective light path of the parabolic reflector, and the self-collimating reflector is located on the reflective light path of the folding reflector; The self-collimating mirror is configured with a total reflection mirror and a half mirror to meet different functional requirements. When using different functions, it switches at the same position in the optical path of the infrared collimator: in the mode of the total reflection mirror, the output infrared and Visible parallel light; in half-mirror mode, the self-collimation function can be realized by adding a standard reflector at the light outlet of the infrared collimator; The target source includes a light source and a target, which are located on the reflection focal plane of the self-collimating mirror, and the target pattern is selected as required; the light source generates visible light and infrared beams and projects them to the target, and the target is illuminated to form a simulated luminous pattern; The eyepiece assembly and the CCD camera assembly are located on the transmission focal plane of the self-collimating mirror, the eyepiece assembly is used for eye observation imaging data, and the CCD camera assembly outputs the image of the eyepiece assembly to the test equipment; The test equipment includes a power supply, a test computer, an image acquisition card, and a motor driver; the test computer is connected to the infrared thermal imager to be tested on the one hand, and collects an infrared image signal output by the infrared collimator; the test computer On the other hand, the image acquisition card is connected with the CCD camera assembly to collect the visible light image signal output by the CCD camera assembly, which is used for target identification and comparison of the infrared thermal imager to be tested; The motor driver is calibrated for the infrared camera to be tested. 2. The infrared thermal imager comprehensive debugging and testing device according to claim 1, characterized in that: the off-axis parabolic reflector, reflector assembly, target source, eyepiece assembly and CCD camera assembly are all adjusted through respective mirror frames Or the base is fixed on the raised working platform. 3. The infrared thermal imager comprehensive debugging and testing device according to claim 2, characterized in that: the raised working platform is made of cast aluminum. 4. The comprehensive debugging and testing device for thermal imaging cameras according to claim 1, characterized in that: the targets are a series of targets, providing various target patterns for debugging and testing of thermal imaging cameras. 5. The infrared thermal imager comprehensive debugging test device according to claim 1, characterized in that: the test computer has two: one is an infrared image debugging computer, corresponding to the infrared thermal imager to be tested; the other Test computer for visible image, corresponding to CCD camera assembly. 6. The infrared thermal imager comprehensive debugging and testing device according to claim 1, characterized in that: the power supply, the test computer and its display are installed in a cabinet. 7. The infrared thermal imager comprehensive debugging and testing device according to claim 1, characterized in that: the light source is a halogen lamp, the light emitted by the halogen filament is used as a visible light source, and the infrared light generated by the bulb after being heated is used as an infrared light source. light source.