CN107462404B - Device for testing reflection/diffuse reflection and ambient light contrast of flat panel display - Google Patents

Abstract

The invention provides a device for testing the reflection/diffuse reflection and the contrast of ambient light of a flat panel display, which can solve the problem that the test result is not comprehensive because the test angle of the conventional test device is relatively fixed or the angle adjustable range is limited. The angle adjusting mechanism comprises a V-shaped circular ring guide rail and two sliding tables, wherein the V-shaped circular ring guide rail is fixedly arranged on the testing platform, an optical fiber collimating mirror with a light source and an optical tester are respectively arranged on the two sliding tables, four corner ends of the bottom of the sliding table are respectively provided with a rotatable V-shaped roller and four V-shaped rollers which are matched with V-shaped guide parts of the V-shaped circular ring guide rail, a rotary driving motor is arranged in the sliding table, a driving gear is arranged at the bottom of the sliding table, an output shaft of the rotary driving motor downwards penetrates through a bottom plate of the sliding table, the driving gear is arranged at the bottom extending end of the output shaft of the rotary driving motor, and a gear ring is arranged at the inner periphery of the bottom of the V-shaped guide part of the V-shaped circular ring guide rail and is in meshed connection with the gear ring.

Description

Flat panel display reflection/diffuse reflection and ambient light contrast test device

Technical field

The invention relates to the field of flat panel display processing and testing, specifically to a flat panel display reflection/diffuse reflection and ambient light contrast testing device.

Background technique

As society enters the screen era, the readability of display screens is directly related to the user experience. Display manufacturers need to control the readability of screens under various color temperature and illumination conditions such as indoors, outdoors, noon, and dusk. Analyze and improve readability to improve user experience. In flat panel display reflection/diffuse reflection and ambient light contrast testing, testing needs to be carried out from different angles in order to obtain comprehensive testing results. However, the optical testers of existing testing devices are often fixed-angle or have adjustable angle ranges. Test blind spots often occur, resulting in incomplete test results, which cannot meet the overall test requirements for flat panel displays.

Contents of the invention

In view of the above problems, the present invention provides a flat panel display reflection/diffuse reflection and ambient light contrast test device, which can solve the problem of incomplete test results caused by existing test devices due to their relatively fixed test angle or limited angle adjustable range.

The technical solution is a flat panel display reflection/diffuse reflection and ambient light contrast test device, which includes an industrial computer, a display, a cabinet, a fiber collimator with a light source, an optical tester, a xenon lamp and an integrating sphere. The industrial computer is installed on In the cabinet, a control panel is installed on the cabinet. The display, control panel and the industrial computer are all electrically connected. The optical fiber collimator and optical tester with light source are respectively connected to the industrial control electromechanical device. Control signal connection, the product to be tested is installed on the test platform in the cabinet through the clamp mechanism, which is characterized in that: the test platform is equipped with an angle adjustment mechanism, and the angle adjustment mechanism includes a V-shaped ring guide rail and two Slide table, the V-shaped ring guide rail is fixedly installed on the test platform, the fiber collimator with light source and the optical tester are respectively installed on the top platforms of the two slide tables, each of which The four corner ends of the bottom of the slide table are respectively equipped with rotatable V-shaped rollers, and the four V-shaped rollers cooperate with the V-shaped guide portion of the V-shaped ring guide rail. Each slide table is equipped with Rotary drive motor, a drive gear is installed at the bottom of the slide table, the output shaft of the rotary drive motor runs downward through the bottom plate of the slide table, and the drive gear is installed on the bottom extension end of the output shaft of the rotary drive motor , The inner circumference of the bottom of the V-shaped guide part of the V-shaped annular guide rail is provided with a ring gear, and the driving gear is meshed with the ring gear.

Further, an annular scale concentric with the V-shaped annular guide rail is installed on the test platform and located on the inner circumferential side of the V-shaped annular guide rail, and two sliding tables are provided on the inner surfaces thereof. There is a scale pointer, and the scale pointer can point to the scale surface of the circular scale.

Further, the clamp mechanism includes a mounting plate, a screw drive assembly and two carrier plates. Clamp blocks are symmetrically installed on the opposite surfaces of the two carrier plates. The screw drive assembly is vertically arranged on the The screw rod of the screw transmission assembly on the mounting plate is a forward-rotating and counter-rotating screw rod. The forward-rotating threaded section and the counter-rotating thread section of the forward-rotating and counter-rotating screw rod are respectively threaded with a forward-rotating screw nut and a counter-rotating screw nut. Screw nut, two guide rails are symmetrically installed on both ends of the installation plate and the two guide rails are parallel to the forward and reverse rotation screw rods. The two ends of the two carrier plates are respectively slidably installed on the screw nut through slide blocks. On the guide rail, the two carrier plates are respectively connected to the forward-rotating screw nut and the counter-rotating screw nut through nut seats. A handwheel is installed on the top of the forward-turning and counter-rotating screw rod.

Further, the clamp mechanism is installed on the test platform through a reversible support and is located at the center of the inner circle of the annular scale.

Further, the reversible support includes a support base plate and a flip plate. The support base plate is installed on the test platform and is located at the center of the inner circle of the annular scale. The bottom of the flip plate is connected to the flip plate through a hinge. The support bottom plate is rotatably connected, and the mounting plate of the clamp mechanism is fixed on the flip plate.

Further, the reversible support is installed on the test platform through a linear translation mechanism. The linear translation mechanism is a horizontal screw transmission mechanism, and the screw of the horizontal screw transmission mechanism is arranged on the test platform. and is located at the center of the inner circle of the annular scale, and the two sides of the screw rod of the horizontal screw transmission mechanism are respectively provided with horizontal guide rails parallel to each other, and the two ends of the bottom of the support bottom plate of the reversible support They are respectively slidably installed on the horizontal guide rail through support sliders and are drivingly connected to the screw rod of the horizontal screw transmission mechanism.

Further, a vertical lifting mechanism is installed at the center of the top frame of the cabinet, the xenon lamp is installed on the vertical lifting mechanism, a connecting platform plate is installed on the lamp holder of the xenon lamp, and the integrating sphere is installed on the Connect to the platform board.

The beneficial effect of the present invention is that it realizes any angle adjustment of the optical tester and the optical collimating lens through the angle adjustment mechanism. Specifically, it installs the optical tester and the optical collimating lens on the sliding table and the bottom of the sliding table respectively. On the one hand, the drive gear is connected to the output end of the rotary drive motor and the drive gear is meshed with the internal ring gear on the lower side of the V-shaped guide part of the V-shaped annular guide rail. On the other hand, the V-shaped roller is connected to the test platform through the V-shaped roller. The V-shaped ring guide rail on the top cooperates with rolling to realize the circular motion of the slide table, so that the angle of the optical tester and optical collimating lens relative to the product to be tested can be adjusted arbitrarily according to the test needs to meet the requirements of comprehensive testing; it is A ring-shaped scale is set on the inner circumference of the V-shaped circular guide rail, and a scale pointer is set on the inner side of each slider, which can visually detect the rotation angle of the slide table, that is, adjust the optical tester or optical collimating lens on the slide table. angle to improve the accuracy of angle adjustment.

Description of drawings

Figure 1 is a schematic perspective view of the flat panel display reflection/diffuse reflection and ambient light contrast testing device in the first viewing direction according to the present invention;

Figure 2 is a schematic three-dimensional view of the reflection/diffuse reflection and ambient light contrast testing device of the flat panel display in the second viewing direction according to the present invention;

3 is a schematic three-dimensional view of the fixture device in the reflection/diffuse reflection and ambient light contrast testing device of the flat panel display according to the present invention.

Reference signs: 10-industrial computer, 20-monitor, 30-cabinet, 31-test platform, 40-fiber collimator with light source, 50-optical tester, 60-xenon lamp, 61-connection platform board, 70- Integrating sphere, 80-control panel, 91-V-shaped ring guide rail, 92a-sliding table, 92b-sliding table, 93-V-shaped roller, 94-rotating drive motor, 95-driving gear, 96-ring gear, 97- Circular scale, 98-scale pointer, 99-wire trough, 100-clamp mechanism, 101-mounting plate, 102-forward and counter-rotating screw rod, 103-carrier plate, 104-clamp block, 105-guide rail, 106- Slider, 107-Hand wheel, 108-Turnable support, 1081-Support base plate, 1082-Flip plate, 1083-Hinge, 1084-Support slider, 109-Horizontal screw drive mechanism, 1091-Screw rod, 1092- Horizontal guide rail, 200-product to be tested, 300-vertical lifting mechanism.

Detailed ways

Referring to Figures 1 and 2, the flat panel display reflection/diffuse reflection and ambient light contrast testing device of the present invention includes an industrial computer 10, a display 20, a cabinet 30, a fiber collimator with a light source 40, an optical tester 50, and a xenon lamp 60 and the integrating sphere 70, the industrial computer 10 is installed in the cabinet 30, the cabinet 30 is equipped with a control panel 80, the display 20, the control panel 80 and the industrial computer 10 are all electrically connected, and the optical fiber collimator 40 with the light source is connected to the optical tester 50 are respectively connected to the electrical control signals of the industrial computer 10, and the product to be tested 200 is installed on the test platform 31 in the cabinet 10 through the clamp mechanism 100; the test platform 31 is equipped with an angle adjustment mechanism, and the angle adjustment mechanism includes a V-shaped ring guide rail 91 and two sliding tables 92a and 92b. The V-shaped annular guide rail 91 is fixedly installed on the test platform 31. The optical fiber collimator 40 with the light source is installed on the top platform of the sliding table 92a and the optical tester 50 is installed on the top of the sliding table 92b. On the platform, rotatable V-shaped rollers 93 are respectively installed at the four corner ends of the bottoms of the two sliding tables 92a and 92b, and the four V-shaped rollers 93 cooperate with the V-shaped guide portion of the V-shaped ring guide rail 91. The sliding table 92a Rotary drive motors 94 are respectively installed in , 92b. A drive gear 95 is installed at the bottom of the slide tables 92a and 92b respectively. The output shaft of the rotary drive motor 94 penetrates downward through the bottom plate of the corresponding slide table. The drive gear 95 is installed on the rotary drive motor. On the bottom extending end of the output shaft 94, a ring gear 96 is provided on the inner periphery of the bottom of the V-shaped guide part of the V-shaped annular guide rail 91, and the driving gear 95 is meshed with the ring gear 96. The rotation drive motors 94 in the two slide tables 92a and 92b drive the drive gear 95 at the bottom of the slide table to rotate. The drive gear 95 meshes with the internal ring gear of the V-shaped annular guide rail 91, thereby driving the V at the bottom of the slide tables 92a and 92b. The roller 93 moves circumferentially along the V-shaped annular guide rail 91 to adjust the angle; a roller concentric with the V-shaped annular guide rail 91 is installed on the test platform 31 and located on the inner circumferential side of the V-shaped annular guide rail 91 The circular scale 97 is provided with a scale pointer 98 on the inner surface of the two sliding tables 92a and 92b. The scale pointer 98 can point to the scale surface of the circular scale 97. A wire groove 99 is provided on the radial outer side of the V-shaped arc guide rail 91 on the test platform.

As shown in Figure 3, the clamp mechanism 100 includes a mounting plate 101, a screw drive assembly and two carrier plates 103. Clamp blocks 104 are symmetrically installed on the opposite surfaces of the two carrier plates 103. The screw drive assembly is vertically arranged on the mounting plate. 101 and the screw of the screw transmission assembly is a forward and counter-rotating screw 102. The forward and counter-rotating thread sections and counter-rotating thread sections of the forward and counter-rotating screw 102 are respectively threaded with a counter-rotating screw nut and a counter-rotating screw nut. , two guide rails 105 are symmetrically installed on both sides of the mounting plate 101, and the two guide rails 105 are parallel to the forward and reverse rotation screw rods 102. The two ends of the two carrier plates 103 are respectively slidably installed on the guide rails 105 through slide blocks 106, and The two carrier plates 103 are respectively connected to the forward-rotating screw nut and the counter-rotating screw nut through nut seats. A handwheel 107 is installed on the top of the forward-turning and counter-rotating screw rod 102; when clamping or unloading the product to be tested 200, turn the handwheel 107 drives the forward and counter-rotating screw rod 102 to rotate, thereby driving the forward-rotating screw nut and counter-rotating screw nut on the forward and counter-rotating screw rod 102 to rotate, and then drives the two carrier plates 103 to move in the same direction or in opposite directions along the guide rail 105 By moving linearly, the clamping blocks on the two carrier boards 103 can clamp and release the product 200 to be tested.

As shown in Figure 1, the clamp mechanism 100 is installed on the test platform 31 through the reversible support 108 and is located at the center of the inner circle of the annular scale 97; the reversible support includes a support bottom plate 1081 and a flip plate 1082, and the support bottom plate 1081 is installed on On the test platform 31 and located at the center of the inner circle of the annular scale 97, the bottom of the flip plate 1082 is rotatably connected to the support bottom plate 1081 through the hinge 1083. The mounting plate 101 of the clamp mechanism 100 is fixedly mounted on the flip plate 1082; the product to be tested When clamping 200, turn the flip plate 1082 to a horizontal position. At this time, the mounting plate 101 of the fixture device is also horizontal. Then clamp the product 200 to be tested into the clamp mechanism 100, and then flip the flip plate 1082 to the same position. The support bottom plate 1081 is in a vertical and upright state, that is, the clamping is completed; it fixes the clamp mechanism on the flip plate 1082 and the flip plate 1082 and the support bottom plate 1081 are connected through a hinge, which can facilitate the clamping and unloading of the product to be tested 200. This is to avoid the problem that the product to be tested 200 is interfered by the position of other devices in the cabinet when being clamped or unloaded, making it difficult to clamp reliably.

The reversible support 108 is also installed on the test platform 31 through a linear translation mechanism. The linear translation mechanism is a horizontal screw transmission mechanism 109. The screw 1091 of the horizontal screw transmission mechanism 109 is disposed on the test platform 31 and is located in an annular shape. The center of the inner circle of the scale 97 and both sides of the screw 1091 of the horizontal screw transmission mechanism 109 are respectively provided with horizontal guide rails 1092 parallel to each other. The two ends of the bottom of the support bottom plate 1081 of the reversible support 108 pass through support sliders 1084 respectively. It is slidably installed on the horizontal guide rail 1092 and is drivingly connected to the screw rod 1091 of the horizontal screw transmission mechanism 109; through the horizontal screw transmission mechanism 109, the reversible support 108 and the clamp mechanism 100 installed on the reversible support 108 can do The entire linear translation allows the entire flippable support to be moved to a position close to the test platform 31 of the cabinet and close to the entrance and exit when the product to be tested 200 needs to be clamped or unloaded, making it easier to clamp and unload the product to be tested.

As shown in Figures 1 and 2, a vertical lifting mechanism 300 is installed in the center of the top frame of the cabinet 30. The xenon lamp 60 is installed on the vertical lifting mechanism 300. A connecting platform plate 61 is installed on the lamp frame of the xenon lamp 60. The integrating sphere 70 is installed on the connecting platform. On the platform board 61; the vertical lifting mechanism 300 can drive the xenon lamp 60 and the integrating sphere 70 to perform vertical lifting movements. When the product to be tested 200 is clamped or unloaded, the vertical lifting mechanism 300 can drive the xenon lamp 60 and the integrating sphere 70 to rise. It is convenient to clamp or unload the product to be tested 200. When not testing, the xenon lamp 60 and integrating sphere 70 can be raised and stored. When the product to be tested 200 is clamped, the vertical lifting mechanism 300 is started, thereby Just drive the xenon lamp 60 and the integrating sphere 70 to move down to the test position synchronously.

When using the present invention to test the ambient light contrast of a flat panel display, first open the cabinet door of the cabinet 30, flip the flip plate 1082 of the flippable support 108 so that the clamp mechanism 100 is in a horizontal state, and place and clamp the product 200 to be tested. onto the clamp mechanism 100, and then push the flip plate 1082 upward so that the clamp mechanism 100 holding the product to be tested 200 is upright to the inner limit position and the product to be tested 200 is aligned with the integrating sphere light outlet. The industrial computer 10 controls the two slides 92a , 92b respectively drive the optical fiber collimator 40 with the light source and the optical tester 50 to rotate along the V-shaped ring guide rail (rotation angle resolution: 0.1 degrees) to complete the measurement of the product ambient light contrast ratio (ACR).

When the integrating sphere is not needed, the integrating sphere 70 and the xenon lamp 60 are driven by the vertical lifting mechanism 300 to rise to the upper part that does not affect the product measurement; the optical fiber collimator 92a with the light source is driven by the sliding table 92a under the control of the industrial computer 10 Rotate down to the incident angle set by the user (such as 15 degrees), and turn on the light source. The optical tester is driven by the sliding table 92b to rotate to the position on the other side, from -16 degrees to -14 degrees, with an interval of 0.1 Measure the brightness (the above angles are freely set by the user), and draw the angle-brightness curve; compare the measured data with the standard mirror low-reflective plate data measured under the same conditions, and the ratio of the peak brightness of the two is or the ratio of the specular reflectance to obtain the specular reflectance of the sample to be tested.

Claims (7)

1. Flat panel display reflection/diffuse reflection and ambient light contrast test device, which includes an industrial computer (10), a monitor (20), a cabinet (30), a fiber collimator with a light source (40), and an optical tester (50) , xenon lamp (60) and integrating sphere (70), the industrial computer (10) is installed in the cabinet (30), a control panel (80) is installed on the cabinet (30), and the display (20) The control panel (80) is electrically connected to the industrial computer (10), and the optical fiber collimator (40) with light source and the optical tester (50) are electrically controlled signals from the industrial computer (10) respectively. connection, the product to be tested (200) is installed on the test platform (31) in the cabinet (30) through the clamp mechanism (100), which is characterized in that: the test platform (31) is equipped with an angle adjustment mechanism, so The angle adjustment mechanism includes a V-shaped ring guide rail (91) and two sliding tables (92a, 92b). The V-shaped ring guide rail (91) is centered on the center of the test platform (31) and is fixedly mounted on the On the test platform (31), a fiber collimator (40) with a light source and an optical tester (50) are respectively installed on the top platforms of the two slides (92a, 92b). The four corner ends of the bottom of the table (92a, 92b) are respectively equipped with rotatable V-shaped rollers (93), and the V-shaped guides of the four V-shaped rollers (93) and the V-shaped annular guide rail (91) The two sliding tables (92a, 92b) are equipped with rotating drive motors (94), and a driving gear (95) is installed at the bottom of the sliding tables (92a, 92b). The rotating driving motor (94) is The output shaft penetrates downwardly through the bottom plate of the slide table (92a, 92b). The drive gear (95) is installed on the bottom extension end of the output shaft of the rotary drive motor (94). The V-shaped ring A ring gear (96) is provided on the lower inner periphery of the V-shaped guide portion of the guide rail (91), and the driving gear (95) is engaged with the ring gear (96). 2. The flat panel display reflection/diffuse reflection and ambient light contrast testing device according to claim 1, characterized in that: the test platform (31) is located on the inner peripheral side of the V-shaped annular guide rail (91) A circular scale (97) concentric with the V-shaped circular guide rail (91) is installed, and a scale pointer (98) is provided on the inner surface of the two sliding tables (92a, 92b). The pointer (98) can point to the scale surface of the annular scale (97). 3. The flat panel display reflection/diffuse reflection and ambient light contrast testing device according to claim 1 or 2, characterized in that: the clamp mechanism (100) includes a mounting plate (101), a screw drive assembly and two carriers. plate (103), a clamping block (104) is symmetrically installed on the opposite surface of the two carrier plates (103), the screw transmission assembly is vertically arranged on the mounting plate (101) and the screw The screw of the rod transmission assembly is a forward and counter-rotating screw (102). The forward and counter-rotating thread sections of the forward and counter-rotating screw (102) are respectively threaded with a forward-rotating screw nut and a counter-rotating thread. Rod nut, two guide rails (105) are symmetrically installed on both sides of the mounting plate (101), and the two guide rails (105) are parallel to the forward and reverse rotating screw rod (102), and the two load-bearing Both ends of the plate (103) are slidably installed on the guide rail (105) through slide blocks (106), and the two carrier plates (103) are connected to the forward-rotating screw nut and counter-rotating screw nut through nut seats. The screw nut is connected, and a handwheel (107) is installed on the top of the forward and counter-rotating screw (102). 4. The flat panel display reflection/diffuse reflection and ambient light contrast test device according to claim 3, characterized in that: the clamp mechanism (100) is installed on the test platform (31) through a reversible support (108) on and located at the center of the inner circle of the annular scale (97). 5. The flat panel display reflection/diffuse reflection and ambient light contrast testing device according to claim 4, characterized in that: the flippable support (108) includes a support bottom plate (1081) and a flip plate (1082). The support base plate (1081) is installed on the test platform (31) and is located at the center of the inner circle of the annular scale (97). The bottom of the flip plate (1082) is connected to the support base plate through a hinge (1083). (1081) is rotatably connected, and the mounting plate (101) of the clamp mechanism (100) is fixed on the flip plate (1082). 6. The flat panel display reflection/diffuse reflection and ambient light contrast testing device according to claim 5, characterized in that: the flippable support (108) is installed on the test platform (31) through a linear translation mechanism, The linear translation mechanism is a horizontal screw transmission mechanism (109). The screw (1091) of the horizontal screw transmission mechanism (109) is disposed on the test platform (31) and located on the annular scale. The center of the inner circle of the ruler (97), and the two sides of the screw (1091) of the horizontal screw transmission mechanism (109) are respectively provided with horizontal guide rails (1092) parallel to each other, and the reversible support (108) Both ends of the bottom of the support bottom plate (1081) are slidably mounted on the horizontal guide rail (1092) through support sliders (1084) and are drivingly connected to the screw rod (1091) of the horizontal screw transmission mechanism. 7. The flat panel display reflection/diffuse reflection and ambient light contrast testing device according to any one of claims 1, 2 or 4 to 6, characterized in that: a vertical lift is installed at the center of the top frame of the cabinet (30) Mechanism (300), the xenon lamp (60) is installed on the vertical lifting mechanism (300), a connecting platform plate (61) is installed on the lamp holder of the xenon lamp (60), and the integrating sphere (70) is installed on the connecting platform plate (61).