Spectral radiation brightness chrominance meter

Abstract

The utility model belongs to the technical field of optical instrument manufacturing, and particularly relates to a spectroscopic radiation brightness and chrominance meter which comprises a shell and a CCD electronic lens, the CCD electronic lens is arranged on the side wall of the shell, and a small-hole reflector, an optical reflector, a multimode quartz optical fiber, an industrial area-array camera and a spectrograph are arranged in the shell. The small-hole reflector is arranged between a light inlet of the multimode quartz optical fiber and the CCD electronic lens through the first driving device, the signal output end of the multimode quartz optical fiber is connected with the spectrometer, and the industrial area-array camera is arranged on one side of the multimode quartz optical fiber; when light enters the small-hole reflector from the CCD electronic lens, the light is divided into two beams, one beam enters a light inlet of the multimode quartz optical fiber, and the other beam enters a light inlet of the industrial area-array camera after being reflected to the optical reflector through the small-hole reflector. The problem that a test area cannot be visible by a traditional detection instrument is solved.

Description

Technical Field

[0001] This application belongs to the technical field of optical instrument manufacturing, and specifically relates to a spectro-radiometric luminance chrominance meter. Background Art

[0002] In the display manufacturing industry, after a display is manufactured, it needs to be measured. However, traditional detection instruments cannot make the test area visible (that is, the test area on the display can be seen). Utility Model Content

[0003] The purpose of this application is mainly to address the shortcomings of the existing technology. By using a combination of a small-hole mirror and an optical mirror with an industrial area array camera, a spectro-radiometric luminance chrominance meter is designed, which can make the test area on the display visible during the optical measurement of the display, solving the problem that traditional detection instruments cannot make the test area visible.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] A spectro-radiometric luminance chrominance meter includes a housing, a CCD electronic lens, and the CCD electronic lens is disposed on the side wall of the housing. Inside the housing, there are a small-hole mirror, an optical mirror, a multimode quartz optical fiber, an industrial area array camera, and a spectrometer. The small-hole mirror is disposed between the light input port of the multimode quartz optical fiber and the CCD electronic lens through a first driving device. The signal output end of the multimode quartz optical fiber is connected to the spectrometer, and the industrial area array camera is disposed on one side of the multimode quartz optical fiber. When light enters the small-hole mirror from the CCD electronic lens, it is divided into two beams. One beam enters the light input port of the multimode quartz optical fiber, and the other beam is reflected by the small-hole mirror to the optical mirror and then enters the light input port of the industrial area array camera.

[0006] Preferably, the small-hole mirror includes a turntable and a transparent mirror. The axis of the turntable forms a 45-degree angle with the axis of the CCD electronic lens. The light input port of the multimode quartz optical fiber is on the extension line of the axis of the CCD electronic lens. A number of transparent mirrors with different areas are evenly arranged around the center of the turntable on the turntable. The length of each transparent mirror from the center of the turntable to the center of the turntable is R, and the distance from the center of the turntable to the axis of the CCD electronic lens is L, satisfying

[0007] Preferably, the first driving device is a first servo motor, and the output shaft of the first servo motor is coaxially and fixedly connected to the turntable.

[0008] Preferably, the first servo motor is located on the side of the turntable facing away from the CCD electronic lens.

[0009] Preferably, five transparent mirrors are provided on the turntable.

[0010] Preferably, the optical mirror is parallel to the turntable, and the optical mirror and the center of the turntable are located on opposite sides of the axis of the CCD electronic lens.

[0011] Preferably, a photodiode is further provided between the turntable and the light inlet of the multimode quartz optical fiber in the housing by a second driving device, and the photodiode is on the extension line of the axis of the CCD electronic lens.

[0012] Compared with the prior art, the present application has the following beneficial effects:

[0013] 1. The present application adopts a combination of a small-hole mirror and an optical mirror with an industrial area array camera to design a spectral radiation brightness colorimeter, which enables the test area on the display screen to be seen during the optical measurement of the display screen, solving the problem that the traditional detection instrument cannot achieve visual inspection of the test area.

[0014] 2. A number of transparent mirrors with different areas are arranged on the turntable of the present application to realize different diaphragms. That is to say, the transparent mirrors play the roles of small holes and mirrors. In this way, different areas of the transparent mirrors cooperate with the CCD electronic lens through the rotation of the turntable to realize diaphragm switching. Preferably, five transparent mirrors are arranged on the turntable, and the viewing angles formed by the light after passing through the CCD electronic lens and the five transparent mirrors on the turntable are 0.1°, 0.2°, 0.5°, 1° and 2° respectively, making the whole measurement process more automated and efficient.

[0015] 3. The present application drives the photodiode through a second driving device, so that when Flicker measurement is required, the second driving device drives the photodiode to block the light inlet of the multimode quartz optical fiber, so that the image formed by the CCD electronic lens is directly focused on the photodiode to realize Flicker measurement; when Flicker measurement is not required, the second driving device moves the photodiode away from the light inlet of the multimode quartz optical fiber, so that the image formed by the CCD electronic lens is directly focused on the light inlet of the multimode quartz optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic external structure diagram of the present application;

[0017] Figure 2 is a schematic diagram showing the internal structure of the housing in the present application;

[0018] Figure 3 is Figure 2 a schematic rear structure diagram;

[0019] Figure 4 This is a schematic structural diagram of the turntable and the first servo motor in this application;

[0020] Figure 5 This is a schematic diagram of installing a photodiode;

[0021] Figure 6 This is a diagram of the relative positional relationship between the photodiode and the electromagnet.

[0022] Among them, 1. Housing; 2. CCD electronic lens; 3. Optical mirror; 4. Multimode quartz optical fiber; 5. Industrial area array camera; 6. Spectrometer; 7. Turntable; 8. Transparent mirror; 9. First servo motor; 10. Photodiode; 11. Heavy weight block; 12. First electromagnet; 13. Mounting seat; 14. Second electromagnet. Specific implementation mode

[0023] As Figures 1-6 shown, a spectro-radiation brightness colorimeter includes a housing 1, a CCD electronic lens 2, and the CCD electronic lens 2 is provided on the side wall of the housing 1. A small hole mirror, an optical mirror 3, a multimode quartz optical fiber 4, an industrial area array camera 5, and a spectrometer 6 are provided in the housing 1. The small hole mirror is arranged between the light input port of the multimode quartz optical fiber 4 and the CCD electronic lens 2 through a first driving device. The signal output end of the multimode quartz optical fiber 4 is connected to the spectrometer 6, and the industrial area array camera 5 is arranged on one side of the multimode quartz optical fiber 4; when light enters the small hole mirror from the CCD electronic lens 2, it is divided into two beams. One beam enters the light input port of the multimode quartz optical fiber 4, and the other beam is reflected by the small hole mirror to the optical mirror 3 and then enters the light input port of the industrial area array camera 5.

[0024] In this implementation mode, during use, the light entering the CCD electronic lens 2 (that is, the image formed by the display screen in the CCD electronic lens 2 during the measurement process) forms two beams of light after passing through the small hole mirror. One beam of light directly penetrates the small hole mirror and then enters the light input port of the multimode quartz optical fiber 4 to realize the measurement of the display screen; while the other beam of light is reflected by the small hole mirror to the optical mirror 3, and then enters the industrial area array camera 5 after passing through the optical mirror 3, thereby realizing observation, which solves the problem that traditional detection instruments cannot achieve visual observation of the test area.

[0025] As a preferred embodiment, the small-hole mirror includes a turntable 7 and a transparent mirror 8. The axis of the turntable 7 forms a 45-degree angle with the axis of the CCD electronic lens 2. The light input port of the multimode quartz optical fiber is on the extension line of the axis of the CCD electronic lens 2. A number of transparent mirrors 8 with different areas are evenly arranged on the turntable 7 around the center of the turntable 7. The length from the center of each transparent mirror 8 to the center of the turntable 7 is R, and the distance from the center of the turntable 7 to the axis of the CCD electronic lens 2 is L, satisfying A number of transparent mirrors 8 with different areas are arranged on the turntable 7, so as to realize different diaphragms. That is to say, the transparent mirror 8 plays the roles of a small hole and a mirror surface. In this way, by rotating the turntable 7, transparent mirrors 8 with different areas cooperate with the CCD electronic lens 2 to realize diaphragm switching. Preferably, five transparent mirrors 8 are arranged on the turntable 7. The viewing angles formed after the light passes through the CCD electronic lens 2 and the five transparent mirrors 8 on the turntable 7 are 0.1°, 0.2°, 0.5°, 1° and 2° respectively, making the automation degree of the whole measurement process higher and the measurement more efficient.

[0026] As a preferred embodiment, the first driving device is a first servo motor 9, and the output shaft of the first servo motor 9 is coaxially and fixedly connected to the turntable 7.

[0027] As a preferred embodiment, the first servo motor 9 is located on the side of the turntable 7 facing away from the CCD electronic lens 2. This design method improves the space utilization rate inside the housing 1.

[0028] As a preferred embodiment, five transparent mirrors 8 are arranged on the turntable 7.

[0029] As a preferred embodiment, the optical mirror 3 is parallel to the turntable 7, and the center of the optical mirror 3 and the center of the turntable 7 are located on opposite sides of the axis of the CCD electronic lens 2.

[0030] As a preferred embodiment, a photodiode 10 is further arranged between the turntable 7 and the light input port of the multimode quartz optical fiber in the housing 1 through a second driving device. The photodiode 10 is on the extension line of the axis of the CCD electronic lens 2. After such a design, by driving the photodiode 10 through the second driving device, when Flicker measurement is required, the second driving device drives the photodiode 10 to block the light input port of the multimode quartz optical fiber, so that the image formed by the CCD electronic lens 2 is directly focused on the photodiode 5 to realize Flicker measurement; when Flicker measurement is not required, the second driving device moves the photodiode 10 away from the light input port of the multimode quartz optical fiber, so that the image formed by the CCD electronic lens 2 is directly focused on the light input port of the multimode quartz optical fiber.

[0031] Preferably, the second driving device includes a mounting base 13, a weight block 11, a first electromagnet 12, and a second electromagnet 14. The mounting base 13 is provided with a mounting channel with upper and lower openings. The mounting base 13 is provided with a light passing hole collinear with the axis of the CCD electronic lens 2. The light passing hole penetrates through opposite side walls of the mounting channel. The photodiode 10 is inserted into the mounting channel. The weight block 11 is fixedly arranged at the upper end of the photodiode 10. The second electromagnet 14 is arranged at the lower end of the photodiode 10. The first electromagnet 12 cooperating with the second electromagnet 14 is arranged directly below the mounting channel on the mounting base 13. The axis of the mounting channel is perpendicular to the axis of the light passing hole. The two ends of the photodiode 10 are slidably connected to the mounting channel. A light passing window with an axis parallel to the axis of the light passing hole is arranged between the two ends of the photodiode 10. After such a setting, when Flicker measurement is required, both the first electromagnet 12 and the second electromagnet 14 are energized. At this time, the facing surfaces of the first electromagnet 12 and the second electromagnet 14 are of different polarities. Therefore, the first electromagnet 12 and the second electromagnet 14 attract each other, so that the light passing window on the photodiode 10 descends, and then the image formed by driving the CCD electronic lens 2 is directly focused on the photodiode 5 to achieve Flicker measurement; conversely, when Flicker measurement is not required, the energizing mode of the first electromagnet 12 and the second electromagnet 14 is adjusted. At this time, the facing surfaces of the first electromagnet 12 and the second electromagnet 14 are of the same polarity. Therefore, the first electromagnet 12 and the second electromagnet 14 repel each other, so that the light passing window on the photodiode 10 rises to be collinear with the axis of the light passing hole, and then the image formed by driving the CCD electronic lens 2 is directly focused on the light incident port of the multimode quartz optical fiber. Among them, there is also an implementation method. When Flicker measurement needs to be achieved, the first electromagnet 12 and the second electromagnet 14 can also be de-energized. At this time, the photodiode 10 descends under the action of the gravity of the weight block 11, so that the light passing window on the photodiode 10 descends, and then the image formed by driving the CCD electronic lens 2 is directly focused on the photodiode 5 to achieve Flicker measurement; when Flicker measurement is not required, the energizing mode of the first electromagnet 12 and the second electromagnet 14 is adjusted. At this time, the facing surfaces of the first electromagnet 12 and the second electromagnet 14 are of the same polarity. Therefore, the first electromagnet 12 and the second electromagnet 14 repel each other, so that the light passing window on the photodiode 10 rises to be collinear with the axis of the light passing hole, and then the image formed by driving the CCD electronic lens 2 is directly focused on the light incident port of the multimode quartz optical fiber.

Claims

1. A spectroradiometer, characterized in that: The invention comprises a housing (1), a CCD electronic lens (2), the CCD electronic lens (2) being arranged on the side wall of the housing (1), a pinhole reflector, an optical reflector (3), a multimode quartz optical fiber (4), an industrial area array camera (5), and a spectrometer (6) being arranged in the housing (1), the pinhole reflector being arranged between a light entrance of the multimode quartz optical fiber (4) and the CCD electronic lens (2) through a first driving device, the signal output end of the multimode quartz optical fiber (4) being connected to the spectrometer (6), and the industrial area array camera (5) being arranged on one side of the multimode quartz optical fiber (4); when light enters the pinhole reflector from the CCD electronic lens (2), it is divided into two beams, one beam entering the light entrance of the multimode quartz optical fiber (4), and the other beam entering the light entrance of the industrial area array camera (5) after being reflected by the pinhole reflector to the optical reflector (3).

2. A spectroradiometer according to claim 1, characterized in that: The pinhole reflector comprises a rotating disk (7) and a transparent mirror (8); the axis of the rotating disk (7) and the axis of the CCD electronic lens (2) form an angle of 45 degrees; the light inlet of the multimode quartz optical fiber is on the extension line of the axis of the CCD electronic lens (2); a plurality of transparent mirrors (8) with different areas are evenly arranged on the rotating disk (7) around the center of the rotating disk (7); the length from each transparent mirror (8) to the center of the rotating disk (7) is R; the distance from the center of the rotating disk (7) to the axis of the CCD electronic lens (2) is L, satisfying 3. A spectroradiometer according to claim 2, characterized in that: The first driving device is a first servo motor (9), and the output shaft of the first servo motor (9) is coaxially fixedly connected to the rotating disk (7).

4. A spectroradiometer according to claim 3, characterized in that: The first servo motor (9) is located on a side of the turntable (7) facing away from the CCD electronic lens (2).

5. The spectroradiometer according to claim 2, characterized in that: The rotating disk (7) is provided with five transparent mirrors (8).

6. A spectroradiometer according to claim 2, characterized in that: The optical reflector (3) is parallel to the rotating disk (7), and the centers of the optical reflector (3) and the rotating disk (7) are located on two opposite sides of the axis of the CCD electronic lens (2).

7. The spectroradiometer according to claim 2, characterized in that: A photodiode (10) is also provided in the housing (1) between the turntable (7) and the light entrance of the multi-mode quartz optical fiber via a second driving device, and the photodiode (10) is on the extension line of the axis of the CCD electronic lens (2).

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