Detection device based on luminous flux

Abstract

The invention provides a detection device based on luminous flux, and belongs to the field of optical detection, the detection device comprises a vertical haze detection module, an inclination angle transmittance detection module, a longitudinal transfer line, a jig carrying table and a side edge positioning assembly; the vertical haze detection module adopts a single light source or multiple light sources to carry out haze detection on one point or multiple points of a screen development area, and the inclination angle transmittance detection module adopts an incident angle adjustable mode to carry out transmittance detection on a screen flexible island area; the longitudinal transfer line is arranged on one side of the detection vertical frame and drives the jig carrying table to do longitudinal reciprocating motion; the side edge positioning assembly is used in cooperation with the jig carrying table. According to the invention, through integration of vertical haze detection and inclination angle transmittance detection, definition evaluation of specific areas such as a screen imaging area and a flexible island is satisfied, efficient intelligent detection is realized, the imaging quality of the screen is ensured, and popularization and application in the imaging detection field of transparent plates such as 3C are facilitated.

Description

Technical Field

[0001] The present invention belongs to the field of optical detection, and particularly relates to a detection device based on light flux. Background Art

[0002] In the 3C (Computer, Communication, and Consumer Electronics) industry, the requirements for the color and transmittance of the screen are getting higher and higher. Traditional manual measurement with the help of tools can no longer meet the current high-efficiency and high-precision detection requirements, and traditional simple 0°, that is, vertical detection, cannot comprehensively reflect the product indicators.

[0003] For mobile phone screens, it includes both the detection of the entire panel and the special detection of specific areas, such as the area of the Dynamic Island. Therefore, it is necessary to develop an integrated haze detection device including transmittance. In this way, the technical indicators of the product can be comprehensively reflected. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a detection device based on light flux, which can solve the above problems.

[0005] Design principle: Transmittance or light transmittance and haze are important physical property optical indicators, which are widely used in quality control management of industries such as plastics, optical films, display screens, and glass. It is stipulated that the ratio of the scattered light flux deviating from the incident light direction through the specimen to the transmitted light flux is expressed as a percentage, which is the so-called haze. A specimen with a large haze will give people a more blurred feeling. The display screens of mobile phones, pads, laptops, etc. not only need to conduct optical evaluation on the imaging area, but also need to conduct optical evaluation on the Dynamic Island part at the top. Based on haze and transmittance, vertical optical haze detection is carried out on the imaging area, and tilt angle transmittance detection combined with usage habits is carried out on the Dynamic Island part. In this way, the optical comprehensive detection of the screen is realized to ensure imaging clarity. The overall solution is as follows.

[0006] A detection device based on light flux, the detection device includes a vertical haze detection module and a tilt angle transmittance detection module; wherein, the vertical haze detection module uses a single light source or multiple light sources to perform haze detection on one point or multiple points of the screen imaging area, and the tilt angle transmittance detection module uses an adjustable incident angle to perform transmittance detection on the screen Dynamic Island area.

[0007] Further, the vertical haze detection module includes a vertically arranged haze CCD camera and a haze light source. The haze CCD camera is installed on the detection stand through a camera adjustment component, and the haze light source is vertically upwardly arranged through a bottom light source fixing component. The emission light band of the haze light source is adjustable. One or more haze light sources are provided corresponding to one haze CCD camera, or the emission light beam of the haze light source is one or more.

[0008] Further, the vertical haze detection module performs haze detection on the center point of the screen imaging area.

[0009] Further, the tilt angle transmittance detection module includes an integrating sphere, a laser focusing lens group, a laser source, and a light shield with a detection notch; the integrating sphere is installed on the detection stand through an integrating sphere mounting seat, and the laser focusing lens group is tiltably installed on the top of the detection stand through a laser mounting seat with an adjustable angle and emits light towards the detection port of the integrating sphere.

[0010] Further, a light shield with a detection notch and a laser incident port is arranged on the outer periphery of the integrating sphere. The detection notch is horizontally opened, and the laser incident port is opened on the light source incident surface.

[0011] Further, the detection device further includes a longitudinal transfer line and a fixture stage; the longitudinal transfer line is arranged on one side of the detection stand and drives the fixture stage to move longitudinally back and forth; the height of the fixture stage is adapted to the height of the integrating sphere.

[0012] Further, the detection device further includes a side positioning component, and the side positioning component is longitudinally arranged side by side with the detection stand on the same side of the longitudinal transfer line.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: By integrating vertical haze detection and tilt angle transmittance detection, the present application meets the clarity evaluation of the screen imaging area and specific areas such as the Dynamic Island, realizes efficient and intelligent detection, ensures the imaging quality of the screen, and is convenient for popularization and application in the imaging detection field of transparent panels such as 3C. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the detection device of the present invention; Figure 2 is a schematic diagram of the vertical haze detection module; Figure 3 is a detection schematic diagram of the vertical haze detection module; Figure 4 is a schematic diagram of the tilt angle transmittance detection module; Figure 5 is a schematic diagram of the light shield; Figure 6 is a detection schematic diagram of the tilt angle transmittance detection module; Figure 7 Partial structural schematic diagram of the fixture stage Figure 8 Schematic diagram of the monitoring area of the screen

[0015] In the figure 10. Vertical haze detection module; 11. Vertically arranged haze CCD camera; 12. Haze light source; 13. Camera adjustment component; 14. Bottom light source fixing component; 15. Camera stop 20. Tilt angle transmittance detection module; 21. Integrating sphere; 22. Laser focusing lens group; 23. Polarizer component; 24. Laser routing component; 25. Laser mounting base; 26. Integrating sphere mounting base; 27. Light shield; 271. Detection notch; 272. Laser incident port; 273. Integrating sphere wire hole 30. Detection upright frame 40. Longitudinal transfer line 50. Fixture stage; 51. Adjusting plate; 52. Fixture carrier plate; 53. Long side fixed stop; 54. Long side side push positioning stop; 55. Short side side push positioning stop; 56. Cam linkage drive component; 57. Positioning suction cup 60. Side positioning component Specific implementation mode

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention

[0017] A detection device based on luminous flux, see Figures 1-8 , the detection device includes a vertical haze detection module 10 and a tilt angle transmittance detection module 20; wherein, the vertical haze detection module 10 uses a single light source or multiple light sources to perform haze detection on one or more points in the imaging area of the screen (see Figure 8 Area A in, which is to detect a single point at the midpoint of the imaging area), and the tilt angle transmittance detection module 20 uses an adjustable incident angle to perform transmittance detection on the dynamic island area of the screen (see Figure 8 Area B in).

[0018] Among them, the vertical haze detection module 10 includes a vertically arranged haze CCD camera 11 and a haze light source 12. The haze CCD camera 11 is installed on the detection stand 30 through a camera adjustment component 13, and the haze light source 12 is vertically upwardly arranged through a bottom light source fixing component 14. The emission light band of the haze light source 12 is adjustable. One or more haze light sources 12 are provided corresponding to one haze CCD camera 11, or the emission light beam of the haze light source 12 is one or more.

[0019] The band of the haze light source 12 is adjustable, or it can be fixedly set within a certain range of bands. The preferred solution is that the haze light source 12 emits two parallel vertical upward light beams. The bands of the two emitted light beams are the same or different, and different bands are preferred to cover a wider band.

[0020] In one example, the haze light source 12 uses an LED light source with a band of 350 - 750 nm.

[0021] Furthermore, a camera stopper 15 is also provided at the lens below the haze CCD camera 11. It is used to prevent the hard touch of the camera by the material.

[0022] See Figure 3 , the vertical haze detection module 10 performs haze detection on the center point of the screen imaging area.

[0023] See Figure 4 , the tilt angle transmittance detection module 20 includes an integrating sphere 21, a focusing laser lens group 22, a polarizer assembly 23, a laser routing assembly 24, a laser source, a laser mounting seat 25, an integrating sphere mounting seat 26, and a light shield 27 with a detection notch.

[0024] In one example, the tilt angle transmittance detection module 20 includes an integrating sphere 21, a laser focusing lens group 22, a laser source, and a light shield 27 with a detection notch; the integrating sphere 21 is installed on the detection stand 30 through an integrating sphere mounting seat 26, and the laser focusing lens group 22 is tiltably installed on the top of the detection stand 30 through a laser mounting seat 25 with an adjustable angle and emits light towards the detection port of the integrating sphere 21.

[0025] The angle adjustment range of the laser mounting seat 25 is 20° to 60°, and it is preferably installed at 40° to 45° because this range is the maximum probability angle range of the angle between the line of sight and the Dynamic Island when people use 3C products.

[0026] See Figure 5 , a light shield 27 with a detection notch 271 and a laser incident port 272 is provided on the outer periphery of the integrating sphere 21. The detection notch 271 is horizontally opened, and the laser incident port 272 is opened on the light source incident surface. An integrating sphere wire hole 273 is also opened on the side wall of the light shield 27 for the installation of power supply and signal lines.

[0027] Further, a polarization component 23 is also provided at the outgoing end of the focusing laser lens group 22.

[0028] Further, a laser routing component 24 is provided at the incident top end of the focusing laser lens group 22 for the incident connection and support of the laser source.

[0029] The integrating sphere mounting base 26 is mounted on the side of the detection upright frame 30, and its height and longitudinal position are adjustable. The laser mounting base 25 is mounted on the top of the detection upright frame 30 through a fixing block, and its height and lateral position are adjustable, and it is equipped with an angle adjustment locking member itself.

[0030] See Figure 1 , the detection device further includes a longitudinal transfer line 40 and a fixture stage 50; the longitudinal transfer line 40 is arranged on one side of the detection upright frame 30 to drive the fixture stage 50 to reciprocate longitudinally; the height of the fixture stage 50 is adapted to the height of the integrating sphere 21.

[0031] Specifically, after the fixture stage 50 carries the screen, the screen moves horizontally and longitudinally, and the dynamic island area at one end horizontally inserts into the detection notch 271 of the light-shielding cover 27.

[0032] The fixture stage 50 adopts a cam linkage fixture for synchronous positioning of the long side and the short side of the screen.

[0033] See Figure 1 , the detection device further includes a side positioning component 60, and the side positioning component 60 is longitudinally arranged side by side with the detection upright frame 30 on the same side of the longitudinal transfer line 40.

[0034] In a specific example, the fixture stage 50 adopts a double fixture, and two groups of vertical haze detection modules 10 and tilt angle transmittance detection modules 20 are arranged on the detection upright frame 30. Simultaneous detection of two screens can be achieved.

[0035] See Figure 7 , the cam linkage fixture of the fixture stage 50 includes a leveling plate 51, a fixture carrier plate 52, a long side fixed stop 53, a long side side push positioning stop 54, a short side side push positioning stop 55, and a cam linkage drive component 56. The cam linkage drive component 56 is arranged at the bottom of the leveling plate 51 for driving the long side side push positioning stop 54 and the short side side push positioning stop 55 in linkage. The fixture carrier plate 52 is arranged on the leveling plate 51, and the long side fixed stop 53, the long side side push positioning stop 54, and the short side side push positioning stop 55 are arranged on two long sides and one short side of the fixture carrier plate 52. No stop component is provided at the short side opposite to the short side side push positioning stop 55, which is used for cooperation with the side positioning component 60 and to prevent obstacles to the detection of the dynamic island area.

[0036] Further, a plurality of positioning suction cups 57 are provided on the fixture carrier plate 52 for adsorbing and positioning the screen after positioning.

[0037] The laser source of the present application can adopt a wide-spectrum halogen lamp source with a wavelength of 400 nm - 1000 nm. The light emitted by the source forms a small spot through an optical fiber and a focusing lens and hits the product. The integrating sphere 21 receives the light transmitted through the product on the other side of the product. The integrating sphere 21 needs to receive as much of the light transmitted through the product as possible while avoiding the entry of external stray light. Therefore, it needs to be close to the product and a light shield 27 is provided.

[0038] The present application is equipped with an automated control system and a quick-switching function, which can achieve a fast and continuous production process, improve production efficiency and production capacity. It has a flexible operation interface and program configuration function, and can be adjusted and customized according to different application requirements to adapt to different types of products, multiple measurement angles, covering different measurement points to meet diverse production needs. The device can accurately measure the transmittance of the product at multiple points to ensure the quality consistency and stability of the product. This helps to reduce the NG rate of the product and improve the reliability of the product.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A detection device based on luminous flux, characterized in that: The detection device includes a vertical haze detection module (10) and an inclination angle transmittance detection module (20); wherein, the vertical haze detection module (10) uses a single light source or multiple light sources to detect the haze of one point or multiple points in the screen imaging area, and the inclination angle transmittance detection module (20) uses an adjustable incident angle to detect the transmittance of the screen's Dynamic Island area.

2. The detection device according to claim 1, wherein: The vertical haze detection module (10) includes a vertically arranged haze CCD camera (11) and a haze light source (12). The haze CCD camera (11) is installed on the detection stand (30) through a camera adjustment component (13), and the haze light source (12) is vertically arranged upward through a bottom light source fixing component (14). Moreover, the emission light band of the haze light source (12) is adjustable. One or more haze light sources (12) are provided corresponding to one haze CCD camera (11), or the emission light beam of the haze light source (12) is one or more.

3. The detection device according to claim 2, characterized in that: A camera stopper (15) is also provided at the lens below the haze CCD camera (11).

4. The detection device according to claim 1, wherein: The vertical haze detection module (10) detects the haze of the center point in the screen imaging area.

5. The detection device according to claim 2, wherein: The inclination angle transmittance detection module (20) includes an integrating sphere (21), a laser focusing lens group (22), a laser source, and a light shield (27) with a detection notch; the integrating sphere (21) is installed on the detection stand (30) through an integrating sphere mounting base (26), and the laser focusing lens group (22) is tiltably installed on the top of the detection stand (30) through a laser mounting base (25) with an adjustable angle and emits light towards the detection port of the integrating sphere (21).

6. The detection device according to claim 5, characterized in that: A light shield (27) with a detection notch (271) and a laser incident port (272) is provided on the outer periphery of the integrating sphere (21). The detection notch (271) is horizontally opened, and the laser incident port (272) is opened on the light source incident surface.

7. The detection device according to claim 5, wherein: A polarizer assembly (23) is also provided at the emission end of the focusing laser lens group (22).

8. The detection device according to claim 5, characterized in that: A laser routing assembly (24) is provided at the incident top of the focusing laser lens group (22) for the incident connection and support of the laser source.

9. The detection device according to claim 5, characterized in that: The detection device further includes a longitudinal transfer line (40) and a fixture stage (50); the longitudinal transfer line (40) is arranged on one side of the detection stand (30) and drives the fixture stage (50) to reciprocate longitudinally; the height of the fixture stage (50) is adapted to the height of the integrating sphere (21).

10. The detection device according to claim 9, characterized in that: The detection device further includes a side positioning component (60), and the side positioning component (60) is longitudinally arranged side by side with the detection stand (30) on the same side of the longitudinal transfer line (40).

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