Multispectral high-precision optical axis consistency detection device

Abstract

The utility model discloses a multispectral high-precision optical axis consistency detection device. The multispectral high-precision optical axis consistency detection device comprises a data acquisition module and a test module, the data acquisition module comprises an electric turntable, a computer and a display screen; the test module comprises an optical platform, a reflective collimator and a lighting source system. The computer is electrically connected with the electric turntable, and the reflective collimator is placed on the optical platform; and the illumination light source system performs imaging through the built-in cross target plate. The electric turntable adopts a high-precision turntable and is used for placing a detected product, a collimator is arranged at the front end of the detected product, and an illumination light source system is arranged at the front end of the collimator. According to the utility model, adjustment and inspection of multi-optical-path products are realized, the problems of low detection precision of multi-spectral high-precision optical axis consistency, complex adjustment method and the like are solved, the operation difficulty of detection personnel is reduced to the greatest extent, and the expansion of the technical field of photoelectric detection is enriched.

Description

Technical Field

[0001] The utility model relates to the field of optical detection, in particular to a multi-spectral high-precision optical axis consistency detection device. Background Art

[0002] The application of small handheld devices and large vehicle-mounted devices with multi-optical lenses such as low illumination, infrared, visible light, and laser is becoming more and more widespread. The better the consistency of the optical axis of each optical module, the better the performance of the whole device. Therefore, ensuring the consistency of the optical axis of each optical module is the key task of various multi-optical devices.

[0003] In order to save time during the product prototype assembly and testing stage and the mass production inspection stage, there is an urgent need for a device that can quickly and accurately detect the optical axis consistency indicators of each optical module of the product. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a multi-spectral high-precision optical axis consistency detection device, which can intuitively and quickly realize high-precision detection when adjusting the optical axis of each lens component of the product or checking the optical axis consistency of the entire product.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a multi-spectral high-precision optical axis consistency detection device, including a data acquisition module and a test module, the data acquisition module includes an electric turntable, a computer and a display screen, the test module includes an optical platform, a reflective collimator and an illumination light source system; the computer and the electric turntable are electrically connected, the reflective collimator is placed on the optical platform; the illumination light source system is imaged through a built-in cross target plate.

[0006] Furthermore, the cross target plate is a hollow cross metal target plate, and the lighting source system includes a visible light source and a black body. The visible light can be detected by the low illumination detection module after passing through the hollow cross metal target plate, and the temperature difference between the black body set temperature and the hollow cross metal target plate can be detected by the infrared detection module.

[0007] The electric turntable includes a high-precision turntable, and the display screen includes a high-definition display screen.

[0008] The visible light source and the black body are placed separately.

[0009] The visible light source and the black body are placed in a staggered manner.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the device adopts a reflective collimator, and the illumination light source system includes a visible light source and a black body. Through a hollow cross target plate, visible light and infrared cross target plates are formed at the same position inside the reflective collimator, and then the product is connected to a high-definition display screen through a data cable. The high-definition display screen displays the detection screen of each optical component of the product, and the electronic differentiation of the product is aligned with the visible light cross target plate and the infrared cross target plate of the collimator, respectively, so as to calculate the azimuth and pitch optical axis consistency deviation of the low-illuminance detection module and the infrared detection module of the detected product according to the scale values ​​of the absolute position of the azimuth and pitch angle of the high-precision electric turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the composition of the utility model;

[0012] Figure 2 It is a schematic diagram of the composition of the data acquisition module;

[0013] Figure 3 It is a schematic diagram of the test module composition;

[0014] Figure 4 It is a schematic diagram of a hollow cross metal target plate. DETAILED DESCRIPTION

[0015] Reference Figure 1-4 As shown, a multi-spectral high-precision optical axis consistency detection device includes a data acquisition module and a test module. The data acquisition module includes an electric turntable 5, a computer 2 and a display screen 1. The test module includes an optical platform 7, a reflective collimator 6 and an illumination light source system. The computer and the electric turntable are electrically connected. The built-in software of the computer controls the electric turntable to adjust the azimuth and pitch, and displays and records the absolute position of the current azimuth and pitch of the electric turntable. The product 4 to be inspected is placed on the electric turntable 5 and fixed with a special tooling. The reflective collimator is placed on the optical platform corresponding to the product to be inspected. At the same time, the product 4 to be inspected is connected to the display screen 1 through a data cable to observe the imaging picture of the product to be inspected in real time. The illumination light source system forms an image through the built-in cross target plate 9.

[0016] In one embodiment, the cross target plate is a hollow cross metal target plate, and the illumination light source system includes a visible light source and a black body 8. The visible light can be detected by the low illumination detection module after passing through the hollow cross metal target plate, and the temperature difference between the black body set temperature and the metal target plate can be detected by the infrared detection module. The illumination light source system can form a visible light cross target plate image and an infrared cross target plate image after passing through the hollow cross target plate, so that visible light and infrared cross target plates can be formed at the same position inside the reflective collimator. The electric turntable adopts a high-precision turntable with an accuracy of 6″, and the display screen includes a high-definition display screen.

[0017] In one embodiment, the visible light source and the black body are placed separately. As another option, the visible light source and the black body can also be placed in a staggered manner. When the product to be inspected is observed at low illumination, a visible light source is used to provide a light source for the reflective collimator. The product to be inspected transmits the acquired image to the high-definition display screen via a data cable. The high-precision electric turntable is controlled by the built-in software of the computer so that the electronic division of the product to be inspected is completely aligned with the cross target plate in the reflective collimator. The azimuth and pitch absolute positions of the turntable at this time are recorded as (X1, Y1). Next, the observation mode of the product to be inspected is switched from low illumination observation to infrared observation, and the light source of the reflective collimator is switched to a black body. The high-precision electric turntable is controlled so that the electronic division of the product to be inspected is completely aligned with the cross target plate in the reflective collimator. The azimuth and pitch absolute positions of the high-precision electric turntable at this time are recorded as (X2, Y2). The consistency of the azimuth optical axis is recorded as △X= |X1- X2|; the consistency of the pitch optical axis is recorded as △Y= |Y1- Y2|. At this time, the azimuth optical axis consistency deviation (△X) and the pitch optical axis consistency deviation (△Y) of the low-illuminance detection module and the infrared detection module of the detected product can be obtained.

[0018] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model are included in the protection scope of the utility model.

Claims

1. A multi-spectral high-precision optical axis consistency detection device, comprising a data acquisition module and a test module, characterized in that: The data acquisition module includes an electric turntable, a computer and a display screen, and the test module includes an optical platform, a reflective collimator and an illumination light source system; the computer and the electric turntable are electrically connected, and the reflective collimator is placed on the optical platform; the illumination light source system forms an image through a built-in cross target plate.

2. The multi-spectral high-precision optical axis consistency detection device according to claim 1, characterized in that: The cross target plate is a hollow cross metal target plate, and the lighting source system includes a visible light source and a black body. The visible light can be detected by the low illumination detection module after passing through the hollow cross metal target plate, and the temperature difference between the black body set temperature and the hollow cross metal target plate can be detected by the infrared detection module.

3. The multi-spectral high-precision optical axis consistency detection device according to claim 1, characterized in that: The electric turntable includes a high-precision turntable, and the display screen includes a high-definition display screen.

4. The multi-spectral high-precision optical axis consistency detection device according to claim 2, characterized in that: The visible light source and the black body are placed separately.

5. The multi-spectral high-precision optical axis consistency detection device according to claim 2, characterized in that: The visible light source and the black body are placed in a staggered manner.

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