CN219434315U - Backlight screen test equipment - Google Patents

Abstract

The utility model discloses backlight screen testing equipment, which comprises a shell, wherein a plug-in seat is arranged in the shell, a screen fixing module for fixing a screen to be tested is slidably connected with the plug-in seat, a front Fresnel lens, a rear Fresnel lens and a reflecting cup are respectively arranged on two sides of the screen fixing module, a light source component and a heat dissipation component are arranged at one ends of the rear Fresnel lens and the reflecting cup, which are far away from the screen fixing module, the front Fresnel lens, the screen fixing module, the rear Fresnel lens, the reflecting cup, the light source component and the heat dissipation component are coaxially arranged, a reflector is arranged at one side of the front Fresnel lens, which is far away from the screen fixing module, a lens module is embedded in the shell, a plug-in port matched with the screen fixing module is formed in the upper end face of the shell, a plurality of groups of heat dissipation ports are formed in the outer end face of the shell, and a heat dissipation fan matched with the heat dissipation ports is arranged on the inner wall of the shell.

Description

Backlight screen test equipment

Technical Field

The utility model relates to the technical field of testing equipment, in particular to backlight screen testing equipment.

Background

Backlight liquid crystal displays, mainly, are screens in which a backlight emits light as a light source and then transmits or reflects light through a liquid crystal molecular layer to form an image. Notebook computers, liquid crystal displays, most of which are backlight liquid crystal screens are used in ordinary times. The backlight is distinguished from the non-backlight. A backlit display such as an LED display like a large outdoor advertising screen, an electronic sign or the like. The classified backlight liquid crystal display can be classified according to various standards, and classified according to light sources and brightness, and has three types of common screens, high-brightness screens and mirror surfaces.

Chinese patent publication No. CN111076903a discloses a backlight simulation detecting device and detecting method thereof, the backlight simulation detecting device comprises: the LED backlight array mechanism comprises a base, a plurality of position adjusting mechanisms and LED lighting devices, wherein the number of the LED lighting devices is equal to that of the position adjusting mechanisms; each LED lighting device is respectively arranged on each position adjusting mechanism and can adjust the position of the LED lighting device on the base along with the position adjusting mechanism; the LED lighting device is provided with an LED mounting position; the diaphragm assembly is arranged above the LED backlight array mechanism in an up-down adjustable manner; the image acquisition device is arranged above the diaphragm assembly and is used for acquiring an illumination image on the LED backlight array mechanism through the diaphragm assembly; and the central processing device is in communication connection with the image acquisition device. The backlight simulation detection device and the detection method thereof can simulate any x-y LED array to realize the brightness simulation conditions of different backlight screens, so as to select the optimal LEDPitch value under the corresponding conditions and provide guidance for the subsequent manufacture of PCB samples.

The existing backlight screen detection equipment has the defects that the distance between a light source and a screen to be detected is more dispersed than that between the light source and the far-reaching light source, the intensity of the light source on the surface of the screen is insufficient, the detection precision of the device is insufficient when the high-brightness screen is detected, and the detection effect is poor.

Accordingly, there is a need to provide a backlight screen testing apparatus that solves the above-mentioned technical problems.

Disclosure of Invention

The utility model aims to provide backlight screen testing equipment for solving the technical problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a screen test equipment in a poor light, which comprises a housin, the inside of casing is equipped with the bayonet socket, the inside of bayonet socket sliding connection has the screen fixed module that is used for fixed screen to await measuring, screen fixed module both sides are equipped with preceding fresnel lens and back fresnel lens respectively, screen fixed module one side is equipped with the reflector cup, back fresnel lens and reflector cup deviate from screen fixed module one end and are equipped with light source subassembly and radiator unit, and preceding fresnel lens, screen fixed module and back fresnel lens, reflector cup, light source subassembly, radiator unit coaxial setting, preceding fresnel lens deviates from screen fixed module one side and is equipped with the reflector, the casing inlays and is equipped with the camera lens module, and the up end of casing has seted up the grafting mouth with screen fixed module looks adaptation.

As a further scheme of the utility model, a plurality of groups of heat dissipation ports are formed in the outer end face of the shell, and a heat dissipation module matched with the heat dissipation ports is arranged on the inner wall of the shell.

Further, the outer surface of the shell is embedded with a control module and a power module, and the power module and the control module are electrically connected with the light source assembly and the heat dissipation module.

As a further scheme of the utility model, a plug groove matched with the screen fixing module is formed in the plug seat.

As a further scheme of the utility model, the screen fixing module comprises a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are positioned on two sides of the screen to be tested, and the first fixing plate and the second fixing plate are fixed through magnetic attraction or fastening pieces.

Further, the inner walls of the first fixing plate and the second fixing plate are attached with flexible cushion layers.

As a further scheme of the utility model, the first fixing plate and the second fixing plate are in a shape of a C, and the first fixing plate and the second fixing plate are symmetrically provided with mounting gaps.

Further, the lens module is provided with a focusing structure, so that the device can adjust the optical path focal length according to the requirement, and further adapt to different screens to be detected for detection, and the applicability of the device is improved.

When the utility model is used, the screen to be tested is clamped and protected through the screen fixing module, the screen fixing module is inserted into the shell through the inserting port, the screen fixing module is in sliding connection with the inserting seat, so that the screen fixing module is arranged in the shell in a sliding manner and keeps coaxial with the Fresnel lens and the light source assembly, the light generated by the light source assembly irradiates the reflecting mirror under the action of the reflecting cup and the Fresnel lens, is emitted by the lens module after being reflected by the reflecting mirror, the display state of the screen to be tested is detected through the image quality irradiated by the lens module, the detection brightness is greatly improved through the arrangement of the reflecting cup, the display image is reflected through the Fresnel lens and the inserting seat, and finally the image display quality of the screen to be tested is judged after the display image of the screen to be tested is amplified, thereby being beneficial to improving the detection effect and the precision of the screen to be tested.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic illustration of a removed portion of a housing structure of the present utility model;

FIG. 3 is a schematic view of the internal structure of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present utility model;

fig. 5 is a schematic view of a screen fixing module structure of the present utility model.

In the figure: 1. a housing; 2. an interface; 3. a lens module; 4. a heat radiation port; 5. a reflective cup; 6. a light source assembly; 7. a heat dissipation module; 8. a reflective mirror; 9. a front fresnel lens; 10. a socket; 11. a screen fixing module; 12. a plug-in groove; 13. a first fixing plate; 14. a second fixing plate; 15. a screen to be tested; 16. a mounting gap; 18. a rear fresnel lens.

Detailed Description

Example 1

As shown in fig. 1-2, a backlight screen testing device comprises a housing 1, a socket 10 is arranged in the housing 1, the socket 10 is slidably connected with a screen fixing module 11 for fixing a screen 15 to be tested, a front fresnel lens 9 and a rear fresnel lens 18 are respectively arranged on two sides of the screen fixing module 11, a reflecting cup 5 is arranged on one side of the screen fixing module 11, a light source component 6 and a heat dissipation component 7 are arranged at one end, deviating from the screen fixing module 11, of the rear fresnel lens 18 and the reflecting cup 5, the front fresnel lens 9, the screen fixing module 11 and the rear fresnel lens 18, the reflecting cup 5, the light source component 6 and the heat dissipation component 7 are coaxially arranged, a reflector 8 is arranged on one side, deviating from the screen fixing module 11, of the front fresnel lens 9, a lens module 3 is embedded in the housing 1, and a plug-in port 2 matched with the screen fixing module 11 is arranged on the upper end surface of the housing 1.

During the use, carry out centre gripping and protection through screen fixed module 11 to the screen 15 that awaits measuring to insert the inside of casing 1 with screen fixed module 11 through interface 2, screen fixed module 11 is through sliding connection with socket 10, make screen fixed module 11 slide and set up in the inside of casing 1, and keep coaxial with fresnel lens 9 and light source module 6, light source module 6 produces the light and shines under reflector 8 through reflector cup 5 and fresnel lens 9's effect, and be launched by lens module 3 after being reflected through reflector 8, detect the display condition of screen 15 that awaits measuring through lens module 3 illuminated image quality, improve detection luminance by setting up of reflector cup 5 by a wide margin, pass through lens module 3 after the reflection of display image through fresnel lens 9 and socket 10, judge its image display quality after finally amplifying the display image of screen 15 that awaits measuring, help improving the detection effect and the precision of screen 15 that awaits measuring.

Example two

On the basis of the first embodiment, as shown in fig. 1-3, a plurality of groups of heat dissipation ports 4 are formed in the outer end face of the shell 1, and a heat dissipation module 7 matched with the heat dissipation ports 4 is arranged on the inner wall of the shell 1.

Further, the outer surface of the shell 1 is embedded with a control module and a power module, and the power module and the control module are electrically connected with the light source assembly 6 and the heat dissipation module 7.

When the device is used, devices such as the light source assembly 6 and the like in the device are radiated through the radiating module 7, so that the performance of optical components is prevented from being influenced by high temperature, meanwhile, the radiating effect of the radiating module 7 is improved through the radiating opening 4, and the convenience of device operation is improved through the control module.

As shown in fig. 1 to 4, a socket slot 12 adapted to the screen fixing module 11 is formed in the socket 10.

During the use, screen fixed module 11 is through sliding joint in the inside of jack groove 12 for socket 10 carries out spacingly to screen fixed module 11 and makes screen fixed module 11 keep coaxial with light source subassembly 6 and fresnel lens 9, also improves the convenience of pegging graft screen fixed module 11 through interface 2 simultaneously to the detection precision of device.

As shown in fig. 1 to 5, the screen fixing module 11 includes a first fixing plate 13 and a second fixing plate 14, the first fixing plate 13 and the second fixing plate 14 are located at two sides of a screen 15 to be tested, and the first fixing plate 13 and the second fixing plate 14 are fixed by magnetic attraction or fastening members.

Further, the inner walls of the first fixing plate 13 and the second fixing plate 14 are attached with flexible cushion layers.

As shown in fig. 1 to 5, the first fixing plate 13 and the second fixing plate 14 are c-shaped, and the first fixing plate 13 and the second fixing plate 14 are symmetrically provided with a mounting gap 16.

During the use, carry out the centre gripping through first fixed plate 13 and second fixed plate 14 and fix to the screen 15 that awaits measuring, first fixed plate 13 and second fixed plate 14 are "c" font setting simultaneously, adaptable not unidimensional screen 15 that awaits measuring, and the inside bed course that is equipped with of first fixed plate 13 and second fixed plate 14 can reduce the damage to the shielding, and dismantle when also being favorable to using magnetism to inhale between first fixed plate 13 and the second fixed plate 14 through setting up of installation clearance 16, first fixed plate 13 and second fixed plate 14 still accessible bolt etc. realize fastening fixedly.

Further, the lens module 3 has a focusing structure, so that the device can adjust the focal length of the optical path according to the requirement, thereby being suitable for different screens 15 to be detected for detection and improving the applicability of the device.

Working principle: the screen 15 to be tested is clamped and protected through the screen fixing module 11, the screen fixing module 11 is inserted into the shell 1 through the inserting port 2, the screen fixing module 11 is in sliding connection with the inserting seat 10, the screen fixing module 11 is arranged in the shell 1 in a sliding mode and keeps coaxial with the Fresnel lens 9 and the light source assembly 6, the light generated by the light source assembly 6 irradiates the reflector 8 under the action of the reflecting cup 5 and the Fresnel lens 9 and is reflected by the reflector 8 and then is emitted by the lens module 3, the display state of the screen 15 to be tested is detected through the image quality irradiated by the lens module 3, the performance of optical components is prevented from being influenced by high temperature through heat dissipation of the internal light source assembly 6 and other devices through the heat dissipation module 7, meanwhile, the heat dissipation effect of the heat dissipation module 7 is improved through the heat dissipation port 4, and the control module is arranged to improve the convenience of device operation, the screen fixing module 11 is connected in the inserting groove 12 in a sliding and clamping manner, so that the inserting seat 10 limits the screen fixing module 11, the screen fixing module 11 keeps coaxial with the light source assembly 6 and the Fresnel lens 9, the detection precision of the device is improved, the convenience of inserting the screen fixing module 11 through the inserting port 2 is improved, the screen 15 to be detected is clamped and fixed through the first fixing plate 13 and the second fixing plate 14, meanwhile, the first fixing plate 13 and the second fixing plate 14 are arranged in a C shape, the screen 15 to be detected with different sizes can be adapted, cushion layers are arranged in the first fixing plate 13 and the second fixing plate 14, damage to shielding can be reduced, and the screen fixing module is also favorable for disassembling when magnetic attraction fixing is used between the first fixing plate 13 and the second fixing plate 14 through the arrangement of the installation gap 16, the first fixing plate 13 and the second fixing plate 14 may also be fastened and fixed by bolts or the like.

Claims (5)

1. A backlight screen test device, comprising a housing, characterized in that: the inside of casing is equipped with the bayonet socket, the bayonet socket sliding connection has the screen fixed module that is used for fixed screen that awaits measuring, screen fixed module both sides are equipped with preceding fresnel lens and back fresnel lens respectively, screen fixed module one side is equipped with the reflector cup, back fresnel lens and reflector cup deviate from screen fixed module one end and are equipped with light source subassembly and radiator unit, and preceding fresnel lens, screen fixed module and back fresnel lens, reflector cup, light source subassembly, radiator unit coaxial setting, preceding fresnel lens deviates from screen fixed module one side and is equipped with the reflector, the casing inlays and is equipped with the camera lens module, and the up end of casing has seted up the grafting mouth with screen fixed module looks adaptation.

2. A backlight screen testing apparatus according to claim 1, wherein: the outer terminal surface of casing has seted up multiunit thermovent, and the inner wall of casing is equipped with the heat dissipation module with thermovent looks adaptation.

3. A backlight screen testing apparatus according to claim 1, wherein: the inside of the plug seat is provided with a plug groove matched with the screen fixing module.

4. A backlight screen testing apparatus according to claim 3, wherein: the screen fixing module comprises a first fixing plate and a second fixing plate, wherein the first fixing plate and the second fixing plate are positioned on two sides of the screen to be tested, and the first fixing plate and the second fixing plate are fixed through magnetic attraction or fastening pieces.

5. A backlight screen testing apparatus according to claim 4, wherein: the first fixed plate and the second fixed plate are in a shape of a C, and the first fixed plate and the second fixed plate are symmetrically provided with installation gaps.