Combined light source module for visual inspection

Abstract

The utility model discloses a combined light source module for visual inspection in the technical field of lighting of machine vision, which comprises a module frame, a reflector plate is fixedly mounted at the bottom of a dimming lattice point, the upper part of a light guide plate is fixedly connected with the bottom surface of a lower diffusion sheet, the upper part of the lower diffusion sheet is fixedly connected with the bottom surface of a lower light collecting sheet, and the bottom surface of the lower light collecting sheet is fixedly connected with a light guide plate. The upper portion of the lower light collecting piece is fixedly connected with the surface of the bottom of the upper light collecting piece, the upper portion of the upper light collecting piece is fixedly connected with the surface of the bottom of the upper diffusion piece, and the outer side edge of the LCD panel is fixedly connected with the module frame through screws. The liquid crystal display device is simple in structure and convenient to use, the unnecessary illumination intensity can be reduced according to actual requirements, a uniform area light source can be provided for an LCD panel through the lower diffusion sheet and the upper diffusion sheet, and the light gathering effect of the device is further enhanced through the lower light gathering sheet and the upper light gathering sheet.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting of machine vision, and in particular relates to a combined light source module for visual detection. Background Art

[0002] The machine vision system mainly uses computers to simulate human visual functions. It mainly uses visual cameras to capture images of products to be tested, and then transmits the images to the processing unit of the host. Through digital processing, it determines the size, shape, color, etc. based on pixel distribution, brightness, color and other information. Light sources are used for lighting in the field of visual inspection.

[0003] The light emitted by the existing traditional backlight source, after passing through optical films such as reflective film and diffusion film, only about 60% of the light will pass through the backlight module into the polarizing film, and finally only 4% of the light will come out after passing through LC and Surface, resulting in insufficient light source affecting the effect of visual inspection. For this reason, we propose a combined light source module for visual inspection. Utility Model Content

[0004] The purpose of the utility model is to provide a combined light source module for visual inspection, so as to solve the problem that the light source emitted by the existing traditional backlight source is prone to be insufficient as mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined light source module for visual detection, comprising a module frame, a cold cathode lamp is provided on the inner side of the module frame, a lamp reflector is provided on the outer side of the cold cathode lamp, a light guide plate is provided on the inner side of the module frame, a dimming grid is provided at the bottom of the light guide plate, a reflective sheet is provided at the bottom of the dimming grid, a lower diffusion sheet is provided above the light guide plate, a lower light collecting sheet is provided above the lower diffusion sheet, an upper light collecting sheet is provided above the lower light collecting sheet, an upper diffusion sheet is provided above the upper light collecting sheet, an LCD panel is provided above the upper diffusion sheet, a vent is provided on one side of the module frame, and a mounting sheet is provided on the outer side of the module frame.

[0006] Preferably, a cold cathode lamp is fixedly mounted on one side of the interior of the module frame, a lamp reflector is sleeved and mounted on the outer side of the cold cathode lamp, and two ends of the lamp reflector are fixedly connected to two sides of the interior of the module frame.

[0007] Preferably, a light guide plate is fixedly connected to one side of the lamp reflector cover, one end of the light guide plate is fixedly connected to an inner side of the module frame, and a dimming point is fixedly connected to the bottom of the light guide plate.

[0008] Preferably, a reflective sheet is fixedly installed at the bottom of the dimming grid point, and the top of the light guide plate is fixedly connected to the bottom surface of the lower diffusion sheet.

[0009] Preferably, the upper portion of the lower diffusion sheet is fixedly connected to the bottom surface of the lower light collecting sheet, and the upper portion of the lower light collecting sheet is fixedly connected to the bottom surface of the upper light collecting sheet.

[0010] Preferably, the upper portion of the upper light collecting sheet is fixedly connected to the bottom surface of the upper diffusion sheet, and the outer edge of the LCD panel is fixedly connected to the module frame by screws.

[0011] Preferably, a plurality of ventilation holes are fixedly provided on one side surface of the module frame, and a mounting plate is fixedly installed on the outer corner of the module frame.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] By setting the dimming points, the brightness of the cold cathode lamp can be accurately adjusted, which is convenient for reducing unnecessary light intensity according to actual needs and effectively reducing energy consumption. By setting the lower diffuser and the upper diffuser, a uniform surface light source can be provided for the LCD panel. By setting the lower light collecting sheet and the upper light collecting sheet, the focusing effect of the device is further enhanced, and the use effect of the light source of the device is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal composition structure of the profile measurement section of the utility model.

[0016] In the figure: 1. module frame; 2. cold cathode lamp tube; 3. lamp reflector; 4. light guide plate; 5. dimming grid; 6. reflector; 7. lower diffuser; 8. lower light collecting sheet; 9. upper light collecting sheet; 10. upper diffuser; 11. LCD panel; 12. vent; 13. mounting sheet. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-2The utility model provides a technical solution: a combined light source module for visual inspection, including a module frame 1, a cold cathode lamp tube 2 is arranged on the inner side of the module frame 1, a lamp reflector 3 is arranged on the outer side of the cold cathode lamp tube 2, a light guide plate 4 is arranged on the inner side of the module frame 1, a dimming grid point 5 is arranged at the bottom of the light guide plate 4, a reflective sheet 6 is arranged at the bottom of the dimming grid point 5, a lower diffusion sheet 7 is arranged above the light guide plate 4, a lower light collecting sheet 8 is arranged above the lower diffusion sheet 7, an upper light collecting sheet 9 is arranged above the lower light collecting sheet 8, an upper diffusion sheet 10 is arranged above the upper light collecting sheet 9, an LCD panel 11 is arranged above the upper diffusion sheet 10, a vent 12 is arranged on one side of the module frame 1, and a mounting sheet 13 is arranged on the outer side of the module frame 1.

[0019] Specifically, a cold cathode lamp tube 2 is fixedly installed on one side of the interior of the module frame 1, a lamp reflector 3 is sleeved and installed on the outer side of the cold cathode lamp tube 2, two ends of the lamp reflector 3 are fixedly connected to the two sides of the interior of the module frame 1, a light guide plate 4 is fixedly connected to one side of the lamp reflector 3, one end of the light guide plate 4 is fixedly connected to one side of the interior of the module frame 1, a dimming grid 5 is fixedly connected to the bottom of the light guide plate 4, a reflector 6 is fixedly installed on the bottom of the dimming grid 5, the top of the light guide plate 4 is fixedly connected to the bottom surface of the lower diffuser 7, the top of the lower diffuser 7 is fixedly connected to the bottom surface of the lower light collecting sheet 8, the top of the lower light collecting sheet 8 is fixedly connected to the bottom surface of the upper light collecting sheet 9, the top of the upper light collecting sheet 9 is fixedly connected to the bottom surface of the upper diffuser 10, the outer edge of the LCD panel 11 is fixedly connected to the module frame 1 by screws, a plurality of ventilation holes 12 are fixedly opened on one side surface of the module frame 1, and a mounting plate 13 is fixedly installed on the outer corner of the module frame 1.

[0020] In this embodiment, the cold cathode lamp tube 2 is an existing technical structure. The cold cathode lamp tube 2 is one of the most energy-efficient light sources. It has rich and pure colors and can be used for indoor and outdoor lighting of star-rated hotels, city signs, building outline lighting modeling, and outdoor occasions such as the outer contours of buildings such as bridges and buildings, and square decorative lighting. It is the preferred light source for city beautification projects. It has high brightness, high lumen, high energy efficiency, and better long-distance visual effects.

[0021] By turning on the cold cathode lamp 2, an energy-saving and efficient light source will be generated. The lamp reflector 3 is designed with a parabolic surface, which can effectively focus the cold cathode lamp 2, and can more effectively reduce the light loss of the cold cathode lamp 2, ensuring that the light is more concentrated and effective. The light guide plate 4 can form light guide points for the light generated by the cold cathode lamp 2. These light guide points can effectively guide the light from the light source of the cold cathode lamp 2 to the inside of the entire module frame 1, thereby providing a uniform lighting effect. The dimming points 5 can be used to accurately adjust the brightness of the cold cathode lamp 2, so as to reduce unnecessary light intensity according to actual needs and effectively reduce energy consumption. The reflector 6 can be used to reflect the light generated by the cold cathode lamp 2 from one direction to another. In combination with the lower diffuser 7 and the upper diffuser 10, a uniform surface light source can be provided for the LCD panel 11. The lower light collecting sheet 8 and the upper light collecting sheet 9 can further enhance the focusing effect of the device and improve the use effect of the light source of the device.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined light source module for visual inspection, including a module frame, characterized in that: A cold cathode lamp is provided on the inner side of the module frame, a lamp reflector is provided on the outer side of the cold cathode lamp, a light guide plate is provided on the inner side of the module frame, a dimming grid is provided at the bottom of the light guide plate, a reflective sheet is provided at the bottom of the dimming grid, a lower diffusion sheet is provided above the light guide plate, a lower light collecting sheet is provided above the lower diffusion sheet, an upper light collecting sheet is provided above the lower light collecting sheet, an upper diffusion sheet is provided above the upper light collecting sheet, an LCD panel is provided above the upper diffusion sheet, a vent is provided on one side of the module frame, and a mounting sheet is provided on the outer side of the module frame.

2. The combined light source module for visual inspection according to claim 1, characterized in that: A cold cathode lamp is fixedly mounted on one side of the module frame, a lamp reflector is sleeved and mounted on the outer side of the cold cathode lamp, and two ends of the lamp reflector are fixedly connected to two sides of the module frame.

3. The combined light source module for visual inspection according to claim 1, characterized in that: A light guide plate is fixedly connected to one side of the lamp reflector cover, one end of the light guide plate is fixedly connected to one side of the interior of the module frame, and a dimming point is fixedly connected to the bottom of the light guide plate.

4. The combined light source module for visual inspection according to claim 1, characterized in that: A reflective sheet is fixedly installed at the bottom of the dimming grid point, and the top of the light guide plate is fixedly connected to the bottom surface of the lower diffusion sheet.

5. The combined light source module for visual inspection according to claim 1, characterized in that: The upper part of the lower diffusion sheet is fixedly connected to the bottom surface of the lower light collecting sheet, and the upper part of the lower light collecting sheet is fixedly connected to the bottom surface of the upper light collecting sheet.

6. The combined light source module for visual inspection according to claim 1, characterized in that: The upper part of the upper light collecting sheet is fixedly connected to the bottom surface of the upper diffusion sheet, and the outer edge of the LCD panel is fixedly connected to the module frame by screws.

7. The combined light source module for visual inspection according to claim 1, characterized in that: A plurality of vents are fixedly provided on one side surface of the module frame, and a mounting plate is fixedly installed on the outer corner of the module frame.

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