Imaging color brightness meter

Abstract

The utility model provides an imaging color luminance meter, which comprises a color camera, a lens is arranged at the front end of the color camera, a heat dissipation block is arranged in the color camera, a data acquisition mainboard and an image processing mainboard are respectively arranged on the left side and the right side of the heat dissipation block, a vacuum cavity is arranged at the front end of the heat dissipation block, and the vacuum cavity is communicated with the data acquisition mainboard. A semiconductor secondary refrigeration sheet is arranged in the vacuum cavity, the front side and the rear side of the semiconductor secondary refrigeration sheet are respectively provided with a silica gel heat conduction plate, the silica gel heat conduction plate on the front side is provided with a CMOS image sensor, and the CMOS image sensor is connected with an image processing mainboard through a circuit; and a heating resistance wire is arranged at the front end of the vacuum cavity and is fixed on the vacuum cavity through a resistance wire mounting plate. The brightness meter has the advantages of simple internal structure, high integration, better equipment size and weight than a conventional brightness meter, portability, high test precision and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of luminance meters, in particular to an imaging color luminance meter. Background Art

[0002] An imaging color luminance meter is a precision instrument used to measure the chromaticity and luminance of an object surface, and is widely used in multiple fields, including medical imaging, photography, UAV aerial photography, security monitoring, etc.

[0003] Currently, most luminance meters use a CCD camera as the imaging component of the image. The thermal noise and readout noise in the CCD image constitute the background noise signal of the CCD. The magnitude of the background noise signal limits the dynamic range of the test system. In particular, the thermal noise is caused by the thermal vibration of electrons in a conductor and exists in all electronic devices and transmission media. However, the existing luminance meter structure does not consider the treatment of thermal noise, thus affecting the accuracy of image imaging. In addition, the internal structure of the existing luminance meter is complex and has many components, which is prone to introducing mechanical vibration during operation, thereby affecting the clarity of the image. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides an imaging color luminance meter.

[0005] The technical solution adopted by the utility model to solve its technical problem is: an imaging color luminance meter, including a color camera. The color camera uses a CCD camera. A lens is provided at the front end of the color camera. A heat dissipation block is provided inside the color camera. The data acquisition main board and the image processing main board are respectively arranged on the left and right sides of the heat dissipation block. A vacuum cavity is provided at the front end of the heat dissipation block. A semiconductor thermoelectric cooler is provided inside the vacuum cavity. A silica gel heat conducting plate is provided on each of the front and rear sides of the semiconductor thermoelectric cooler. A CMOS image sensor is provided on the front silica gel heat conducting plate. The CMOS image sensor is connected to the image processing main board through a circuit. A heating resistance wire is provided at the front end of the vacuum cavity. The heating resistance wire is fixed to the vacuum cavity through a resistance wire mounting plate.

[0006] Further, it further includes a locking ring. An opening is provided along the axial direction on the side wall of the locking ring. The locking ring is sleeved outside the vacuum cavity, and the locking ring is fixed to the vacuum cavity by screwing to lock the opening. A plurality of connecting arms extending radially outward are further provided on the locking ring. One end of the connecting arm away from the locking ring is connected to the inner wall of the front end of the housing of the color camera, so as to fixedly connect all the internal structures to the housing.

[0007] Furthermore, the heat dissipation block is formed by stacking multiple heat dissipation plates up and down. There is a gap for air circulation between adjacent heat dissipation plates. One end of the heat dissipation plates is connected together to form an integral heat dissipation block.

[0008] Furthermore, the connection between the heat dissipation block and the vacuum cavity is sealed with a rubber sealing strip. A sealing groove is provided on the end face of the rubber sealing strip facing away from the heat dissipation block.

[0009] Furthermore, a fan heat dissipation hole area is provided at the rear of the color camera. A heat dissipation fan is provided inside the fan heat dissipation hole area, and the heat dissipation fan faces the heat dissipation block.

[0010] Furthermore, a USB-A data communication port and a USB-B data communication port are also provided at the rear of the color camera. The USB-A data communication port and the USB-B data communication port are arranged side by side above the fan heat dissipation hole area, and there are two USB-A data communication ports arranged vertically.

[0011] Furthermore, a power indicator light and a power interface are provided at the rear of the color camera. Among them, the power indicator light and the power interface are located on the right side of the fan heat dissipation hole area, and the power indicator light is located above the power interface.

[0012] Furthermore, a display screen is provided on one side of the color camera.

[0013] Furthermore, heat conduction grooves are provided on both opposite sides of the color camera, and the sides where the heat conduction grooves are located are on the left and right sides of the side where the display screen is located. The heat conduction grooves on both sides face the data acquisition main board and the image processing main board respectively.

[0014] Furthermore, it also includes a tripod, and the tripod supports the luminance meter from below. This luminance meter can be used alone with the tripod or integrated into various automation devices to meet diverse usage requirements.

[0015] The beneficial effects of the present utility model are as follows:

[0016] (1) The overall components are installed and fixed in the cavity. The vacuum cavity ensures the durability of the internal components and is not easily aged;

[0017] (2) A heating resistance wire is used to heat the quartz glass to eliminate the water vapor brought by semiconductor refrigeration and prevent water vapor from generating on the quartz glass, which affects image acquisition;

[0018] (3) The silicone heat conduction plate makes the temperature transfer more uniform. The semiconductor second-stage refrigeration chip is used to dissipate heat from the CMOS image sensor to maintain a stable working temperature;

[0019] (4) A CMOS image sensor, which is used to quickly output RAW data and RGB data with small pixel size and high quality in a short time, and has the characteristics of fast imaging speed and high image quality;

[0020] (5) The image processing main board quickly processes the original image, including noise reduction, automatic white balance, automatic saturation adjustment, etc., to obtain image data that is clearer and has better effects than the original image;

[0021] (6) The rubber sealing strip plays a role in sealing and fixing the cavity, and the heat dissipation block dissipates heat from the overall cavity. At the same time, it can also effectively reduce the noise generated during the operation of the luminance meter and improve the stability of the luminance meter operation;

[0022] (7) The data processing main board encodes the processed image data into image data of multiple protocols and transmits it to the PC side through the data communication line for further analysis and processing;

[0023] (8) The heat conduction groove and the cooling fan conduct the heat generated during the operation of the camera into the air, effectively maintaining the stability of the working temperature of the luminance meter;

[0024] (9) The USB-A data communication port and the component 5 USB-B data communication port send the image data to the PC side;

[0025] (10) This device is built-in with a color camera, which eliminates the influence of the lack of color components caused by using a black-and-white camera and improves the test accuracy;

[0026] (11) This luminance meter is composed of a CCD camera, a CMOS image sensor, an image processing main board and a data acquisition main board. Its internal structure is simple and highly integrated. The volume and weight of the device are better than those of conventional luminance meters, making it easy to carry around and set up a test environment at any time, with wide applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0028] Figure 1 It is a schematic structural diagram of the imaging color luminance meter of the present utility model.

[0029] Figure 2 It is a schematic structural diagram of the imaging color luminance meter of the present utility model.

[0030] Figure 3 It is a schematic cross-sectional structural diagram of the imaging color luminance meter of the present utility model.

[0031] Figure 4 It is a schematic internal structural diagram of the imaging color luminance meter.

[0032] Figure 5It is a schematic diagram of the internal structure of an imaging color luminance meter.

[0033] Figure 6 It is a schematic diagram of the perspective structure of the imaging color luminance meter of the present utility model.

[0034] Figure 7 It is a connection schematic diagram of the locking ring.

[0035] Figure 8 It is a schematic diagram of the structure of the heat sink.

[0036] Figure 9 It is a schematic diagram of the structure of the rubber sealing strip.

[0037] In the figure: 1. Lens, 2. Heat conduction groove, 3. Color camera, 4. USB-A data communication port, 5. USB-B data communication port, 6. Power indicator light, 7. Power interface, 8. Cooling fan, 9. Heating resistance wire, 10. CMOS image sensor, 11. Silicone heat conduction plate, 12. Data acquisition main board, 13. Heat sink, 14. Image processing main board, 15. Rubber sealing strip, 16. Semiconductor secondary refrigeration chip, 17. Vacuum cavity, 18. Display screen, 19. Resistance wire mounting plate, 20. Fan heat dissipation hole area, 21. Locking ring, 22. Connecting arm. Specific embodiments

[0038] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner. Therefore, they only show the components related to the present utility model. Directions and references (such as up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the claimed subject matter is only defined by the appended claims and their equivalents.

[0039] As Figures 1 - 2As shown in the figure, an imaging color luminance meter of the present utility model includes a color camera 3, and the color camera 3 adopts a CCD camera. A lens 1 is provided at the front end of the color camera 3, and a display screen 18 is provided on one side of the color camera 3. Heat conduction grooves 2 are provided on both opposite sides of the color camera 3, and the sides where the heat conduction grooves 2 are located are on the left and right sides of the side where the display screen 18 is located. The two heat conduction grooves 2 are respectively opposite to the data acquisition main board 12 and the image processing main board 14. At the rear of the color camera 3, there are a fan heat dissipation hole area 20, a USB-A data communication port 4, a USB-B data communication port 5, a power indicator light 6, and a power interface 7. A heat dissipation fan 8 is provided inside the fan heat dissipation hole area 20, and the heat dissipation fan 8 is facing the heat dissipation block 13. The USB-A data communication port 4 and the USB-B data communication port 5 are arranged side by side above the fan heat dissipation hole area 20, and there are two USB-A data communication ports 4, arranged one above the other. The power indicator light 6 and the power interface 7 are located on the right side of the fan heat dissipation hole area 20, and the power indicator light 6 is located above the power interface 7. It also includes a tripod, and the tripod supports the luminance meter from below. This luminance meter can be used alone with a tripod or integrated into various automated devices to meet diverse usage requirements.

[0040] As Figures 3 - 7 shown, a heat dissipation block 13 is provided inside the color camera 3. The data acquisition main board 12 and the image processing main board 14 are respectively arranged on the left and right sides of the heat dissipation block 13. A vacuum cavity 17 is provided at the front end of the heat dissipation block 13. A semiconductor secondary refrigeration sheet 16 is provided inside the vacuum cavity 17. Silicone heat conduction plates 11 are respectively provided on the front and rear sides of the semiconductor secondary refrigeration sheet 16. A CMOS image sensor 10 is provided on the front silicone heat conduction plate 11. The CMOS image sensor 10 is connected to the image processing main board 14 through a circuit. A heating resistance wire 9 is provided at the front end of the vacuum cavity 17. The heating resistance wire 9 is fixed on the vacuum cavity 17 through a resistance wire mounting plate 19. In this embodiment, an opening is provided at the front end of the vacuum cavity 17, and the resistance wire mounting plate 19 is embedded in the opening and is hermetically connected to the vacuum cavity 17. The heating resistance wire 9 is provided on the front surface of the resistance wire mounting plate 19.

[0041] As Figure 7 shown, it further includes a locking ring 21. An opening is provided along the axial direction on the side wall of the locking ring 21. The locking ring 21 is sleeved outside the vacuum cavity 17, and the locking ring 21 is fixed on the vacuum cavity 17 by screwing to lock the opening. A plurality of connecting arms 22 extending radially outward are also provided on the locking ring 21. One end of the connecting arm 22 away from the locking ring 21 is connected to the inner wall of the front end of the shell of the color camera 3, so as to fixedly connect all the internal structures to the shell.

[0042] As Figure 8As shown, the heat sink 13 is formed by stacking multiple heat dissipation plates vertically. There is a gap for air circulation between adjacent heat dissipation plates. One end of the heat dissipation plates is connected together to form the integral heat sink 13.

[0043] As Figure 5 and Figure 9 As shown, the connection between the heat sink 13 and the vacuum chamber 17 is sealed with rubber sealing strips 15. A sealing groove is provided on the end face of the rubber sealing strip 15 facing away from the heat sink 13. In this embodiment, the heat sink 13 is rectangular. Therefore, four rubber sealing strips 15 are used to achieve the seal with the vacuum chamber 17. During installation, the edge of the vacuum chamber 17 is embedded in the sealing groove.

[0044] Inspired by the above ideal embodiments based on the present invention, through the above description, relevant staff can make various changes and modifications without departing from the scope of the present invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An imaging color luminance meter, characterized in that: The invention comprises a color camera, wherein a lens is arranged at the front end of the color camera, a heat sink is arranged inside the color camera, a data acquisition main board and an image processing main board are respectively arranged on the left and right sides of the heat sink, a vacuum cavity is arranged at the front end of the heat sink, a semiconductor secondary cooling sheet is arranged inside the vacuum cavity, a silicone heat conducting plate is respectively arranged on the front and rear sides of the semiconductor secondary cooling sheet, a CMOS image sensor is arranged on the front silicone heat conducting plate, and the CMOS image sensor is connected to the image processing main board through a line; a heating resistance wire is arranged at the front end of the vacuum cavity, and the heating resistance wire is fixed on the vacuum cavity through a resistance wire mounting plate.

2. The imaging color luminance meter according to claim 1, characterized in that: It also includes a locking ring, an opening is axially provided on the side wall of the locking ring, the locking ring is sleeved on the outside of the vacuum chamber, and the locking ring is fixed to the vacuum chamber by screw locking the opening. The locking ring is also provided with a plurality of connecting arms extending radially outward, and one end of the connecting arm away from the locking ring is connected to the inner wall of the front end of the outer shell of the color camera.

3. The imaging color luminance meter according to claim 1, wherein: The heat sink block is formed by stacking a plurality of heat sinks up and down, with intervals for air circulation between adjacent heat sinks, and ends of one end of the heat sinks are connected to each other.

4. The imaging color luminance meter according to claim 3, characterized in that: The connection between the heat dissipation block and the vacuum cavity is sealed by a rubber sealing strip, and a sealing groove is arranged on the end surface of the rubber sealing strip facing away from the heat dissipation block.

5. The imaging color luminance meter according to claim 1, wherein: A fan heat dissipation hole area is arranged at the rear of the color camera, a heat dissipation fan is arranged inside the fan heat dissipation hole area, and the heat dissipation fan is directly facing the heat dissipation block.

6. The imaging color luminance meter according to claim 5, characterized in that: The rear of the color camera is also provided with a USB-A data communication port and a USB-B data communication port. The USB-A data communication port and the USB-B data communication port are arranged side by side above the fan heat dissipation hole area, and there are two USB-A data communication ports, which are arranged up and down.

7. The imaging color luminance meter according to claim 5, characterized in that: A power indicator light and a power interface are provided at the rear of the color camera, wherein the power indicator light and the power interface are located on the right side of the fan heat dissipation hole area, and the power indicator light is located above the power interface.

8. The imaging color luminance meter according to claim 1, characterized in that: A display screen is provided on one side of the color camera.

9. The imaging color luminance meter according to claim 1, characterized in that: The color camera has heat-conducting grooves on both sides thereof, and the sides where the heat-conducting grooves are located are located on the left and right sides of the side where the display screen is located, and the heat-conducting grooves on both sides are respectively opposite to the data acquisition mainboard and the image processing mainboard.

10. The imaging color luminance meter according to claim 1, characterized in that: Also included is a tripod supported below the luminance meter.

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