CN216930197U - Light source device and camera test system - Google Patents
Light source device and camera test system Download PDFInfo
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- CN216930197U CN216930197U CN202123269325.4U CN202123269325U CN216930197U CN 216930197 U CN216930197 U CN 216930197U CN 202123269325 U CN202123269325 U CN 202123269325U CN 216930197 U CN216930197 U CN 216930197U
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Abstract
The utility model belongs to the technical field of camera performance testing, and particularly relates to a light source device and a camera testing system. The light source device comprises a box body, a light transmitting plate, a light guide plate and a plurality of lamp beads, wherein an annular boss is arranged on the inner wall face of an opening end of the box body, the annular boss encloses to form a light outlet, the light transmitting plate is matched with and covers the light outlet, the light guide plate is clamped between the light transmitting plate and the annular boss, the lamp beads are uniformly distributed on the bottom face of the annular boss, and the inner wall face of the box body is located on the portion below the annular boss and is covered with a mirror reflection layer. Light that the lamp pearl that evenly lays sent evenly passes through even directive light guide plate after the specular reflection layer reflects, and light jets out from the front of light guide plate again through each leaded light point reflection diffusion in the light guide plate to can improve the homogeneity of light when following the light-passing board outgoing, make the light-passing board evenly luminous, thereby make the light source device of this application can satisfy the illumination requirement of high homogeneity.
Description
Technical Field
The utility model belongs to the technical field of camera performance testing, and particularly relates to a light source device and a camera testing system.
Background
For a camera module, such as a camera of a mobile phone, a camera, etc., it is necessary to test various performances before shipping. In the related art, when an image test card is used for testing the performance of a camera, a light source is required to supplement light for the test.
Along with the continuous optimization of camera performance, the kind of required detection light source also becomes more and more diversified, also increasingly high to the performance requirement of light source. Some cameras are detecting time measuring, illumination intensity and the degree of consistency to the light source all have higher requirement, generally, present light source guarantees the homogeneity of illumination through evenly laying the lamp pearl usually, however, because the uniformity of lamp pearly-lustre flux is relatively poor, even the intensity complete unanimity that the lamp pearl with the specification often can not guarantee emergent light, thus, even evenly lay the lamp pearl, the illumination homogeneity of light source also can't satisfy the test demand of high requirement camera, and, along with the extension of lamp pearl live time, the stability variation of lamp pearl, can further lead to illumination homogeneity variation, thereby influence the accuracy of test result.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model aims to provide a light source device and a camera testing system, and aims to solve the technical problem that the illumination uniformity of a light source for camera testing in the prior art cannot meet the performance testing requirement of a camera.
In order to realize the purpose, the utility model adopts the technical scheme that: a light source device comprising:
the light source comprises a box body, a light source and a light source, wherein the box body is hollow, one end of the box body is open, an annular boss is arranged on the inner wall surface of the open end of the box body, and the annular boss surrounds to form a light outlet;
the light transmitting plate is connected with the box body and is adapted to cover the light outlet;
the light guide plate is clamped between the light transmitting plate and the annular boss and covers the light outlet;
the lamp beads are uniformly distributed on the bottom surface of the annular boss, which is far away from the light guide plate; wherein
The inner wall surface of the box body is positioned at the part below the annular boss and is covered with a mirror reflection layer.
In some embodiments, the portion of the inner wall surface of the case below the annular boss is covered with the specular reflection film to form a specular reflection layer.
In some embodiments, the light source device further comprises a reflective mirror attached to the inner bottom surface of the box body, the part of the inner side wall of the box body, which is located below the annular boss, covers the specular reflection film, and the surface of the reflective mirror and the specular reflection film form a specular reflection layer.
In some embodiments, the box body comprises an annular frame and a bottom plate, the annular boss is arranged at one end of the annular frame, the part, below the annular boss, of the inner side wall of the annular frame covers the mirror surface reflection film, the bottom plate is arranged at the other end of the annular frame, and the reflector is attached to the upper surface, facing the annular boss, of the bottom plate.
In some embodiments, the annular boss is integrally formed with the annular frame.
In some embodiments, the bottom surface of the annular boss is parallel to the mirror.
In some embodiments, the light transmissive plate is a diffuser plate.
In some embodiments, the light source device further includes a pressing plate connected to the housing, the pressing plate is stacked on the light-transmitting plate and located above the annular boss, and the pressing plate cooperates with the annular boss to clamp the light-transmitting plate and the light-guiding plate.
In some embodiments, the lamp beads are LED lamp beads.
One or more technical solutions in the light source device provided by the present invention have at least one of the following technical effects: the utility model provides a light source device, it sets up annular boss at the opening end of box, evenly install the lamp pearl in the bottom surface of annular boss, annular boss encloses into the light-emitting window, the light-emitting window is by the light-passing board closing cap, set up the light guide plate in the below of light-passing board, and the internal face of box is located the position department of annular boss below and sets up the specular reflection layer, the light that the lamp pearl sent passes through the specular reflection layer after reflecting, the rethread light guide plate, at last through the light-passing board outgoing. So, the even directive light guide plate after the light that the lamp pearl that evenly lays sent passes through the specular reflection layer reflection, and light is through each leaded light point reflection diffusion in the light guide plate, jets out from the front of light guide plate again, through various density in the light guide plate, leaded light point not of uniform size, homogeneity when further improving light from the light-passing board outgoing makes the light-passing board evenly luminous to make the light source device of this application can satisfy the illumination requirement of high homogeneity.
The utility model adopts another technical scheme that: a camera test system comprises the light source device.
One or more technical schemes in the camera testing system provided by the utility model at least have one of the following technical effects: the camera test system of this application, through using foretell light source device as test environmental light source, light source device can provide reliable and stable even illumination, satisfies the capability test's of camera requirement, provides the guarantee for the capability test of camera.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a light source device according to an embodiment of the present invention;
FIG. 2 is an exploded view of the light source device shown in FIG. 1;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a schematic diagram of light rays emitted from the light source device shown in FIG. 1;
fig. 5 is a sectional view of a partial structure of the light source device shown in fig. 1.
Wherein, in the figures, the respective reference numerals:
10. a box body; 11. a frame; 12. a base plate; 13. an annular boss; 14. a light outlet;
20. a light-transmitting plate;
30. a light guide plate;
40. a lamp bead; 41. a lamp panel;
50. a specular reflection layer;
60. a reflective mirror;
70. and (7) pressing a plate.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to fig. 1 to 5 and the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Reference in the specification to "one embodiment," "some embodiments," or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the utility model. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
As shown in fig. 1 to 5, an embodiment of the present invention provides a light source device, which is suitable for being used as an ambient light source when a performance test is performed on a camera, and is particularly suitable for being used as an ambient light source when an illuminance uniformity performance test is performed on the camera.
Specifically, as shown in fig. 1 to 3, the light source device includes a box 10 and a light-transmitting plate 20, the inside of the box 10 is hollow, one end of the box is open, an annular boss 13 is protruded from an inner wall surface of the open end of the box 10, the annular boss 13 encloses to form a light outlet 14, and the light-transmitting plate 20 is connected to the box 10 and adapted to cover the light outlet 14. The box 10 is made of opaque material, and only the light outlet 14 of the whole box 10 can emit light through the transparent plate 20.
Further, the light source device further comprises a light guide plate 30 and a plurality of lamp beads 40, the light guide plate 30 is clamped between the annular boss 13 and the light-transmitting plate 20, the light guide plate 30 is also matched with and covers the light outlet 14, and the lamp beads 40 are uniformly distributed on the lower bottom surface of the annular boss 13 deviating from the light-transmitting plate 20. The inner wall surface of the box 10 is located below the annular boss 13 and is covered with the specular reflection layer 50, so that the light emitted by the lamp beads 40 is emitted to the specular reflection layer 50, reflected by the specular reflection layer 50 and then emitted to the light guide plate 30, as shown in fig. 4 (the dotted arrow in the figure corresponds to the propagation path of a part of the light in the box).
The embodiment of the application provides a light source device, it sets up annular boss 13 through the opening end at box 10, evenly install lamp pearl 40 in the bottom surface of annular boss 13, annular boss 13 encloses into light-emitting window 14, light-emitting window 14 is by the light-passing board 20 closing cap, set up light guide plate 30 in the below of light-passing board 20, and the position department that is located annular boss 13 below at the internal face of box 10 sets up specular reflection layer 50, the light that lamp pearl 40 sent passes through specular reflection layer 50 after reflecting, rethread light guide plate 30, exit through light-passing board 20 at last. So, lamp pearl 40 evenly lays, the even outgoing of light provides basic guarantee, the even light that lamp pearl 40 of laying sends passes through even directive light guide plate 30 behind the reflection of specular reflection layer 50, the light that lamp pearl 40 sent does not directly throw to light guide plate 30, can reduce luminance to partial high bright light, also help improving the homogeneity of light luminance, furthermore, light is through each leaded light point reflection diffusion in the light guide plate 30, jet out from the front of light guide plate 30 again, through various densities in the light guide plate 30, leaded light point different in size, further improve the homogeneity when light is from the light-passing board 20 outgoing, make light-passing board 20 evenly luminous, thereby make the light source device of this application can satisfy the illumination requirement of high homogeneity.
In this embodiment, the light guide plate 30 uses an optical-grade acrylic plate or other light guide plate 30 as a substrate, and then uses a high-precision laser machine to carve light guide points or print light guide points by other devices, so that light emitted from the lamp beads 40 is absorbed by the substrate and stays, and when light irradiates each light guide point, reflected light is diffused at each angle and is emitted from the substrate, i.e., the front surface of the light guide plate 30. Thus, the light guide plate 30 is provided with various dense and uneven light guide points, so that light can be uniformly emitted through the light guide plate 30. In addition, the inner bottom surface of the light guide plate 30 is further provided with a reflective film layer for reflecting the light exposed from the bottom surface back to the light guide plate 30, thereby improving the light use efficiency and reducing the power consumption. It is understood that the light guide plate 30 of the present application is a general light guide plate 30 in the optical field, and the specific structure and the light guide principle thereof will not be described in further detail herein.
In some embodiments of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the light-transmitting plate 20 is a diffuser, and the diffuser is disposed to interfere with the outgoing light, so that the beam angle of the light passing through the diffuser is enlarged, and thus the increased beam angle can properly reduce the illumination intensity and also help to improve the uniformity of the brightness of the light-transmitting plate 20.
In some embodiments of the present invention, as shown in fig. 2, a portion of the inner wall surface of the casing 10 located below the annular boss 13 is coated with a specular reflection film, thereby forming a specular reflection layer 50. Thus, as shown in fig. 3, the light emitted from the lamp bead 40 is emitted downward to the inner wall surface of the box 10, then reflected upward to the light guide plate 30 by the specular reflection layer 50, and then emitted uniformly through the light transmission plate 20.
In other embodiments, as shown in fig. 3, the light source device further includes a reflective mirror 60, the reflective mirror 60 is attached to the inner bottom surface of the housing 10, a portion of the inner sidewall of the housing 10 below the annular boss 13 is covered with a specular reflection film, and the surface of the reflective mirror 60 and the specular reflection film form the specular reflection layer 50. Namely, the reflective mirror 60 is arranged on the bottom surface of the box body 10, the surface of the reflective mirror 60 forms the mirror reflection layer 50 of the inner bottom part, and the inner side wall of the box body 10 is coated with the mirror reflection layer to form the mirror reflection layer 50 of the side wall part, so that the reflecting requirement of the light rays of the lamp beads 40 can be met.
Of course, in other embodiments, the mirror 60 may be provided on both the inner bottom surface and the inner side wall of the housing 10 to form the specular reflection layer 50.
Specifically, in the present embodiment, as shown in fig. 2 and 3, the light source device includes a reflective mirror 60, the case 10 includes a ring frame 11 and a bottom plate 12, the ring-shaped boss 13 is disposed at one end of the ring frame 11, the bottom plate 12 is mounted at the other end of the ring frame 11, the bottom plate 12 is connected to the ring frame 11, the reflective mirror 60 is attached to an upper surface of the bottom plate 12 facing the ring-shaped boss 13, and a portion of an inner side wall of the ring frame 11 located below the ring-shaped boss 13 is covered with a mirror reflection film.
Of course, in other embodiments, the case 10 may only include the frame 11, the light source device includes the reflector 60, the annular boss 13 is disposed at one end of the annular frame 11, the shape and size of the reflector 60 are matched with the opening at the other end of the annular frame 11, the reflector 60 is connected to the other end of the annular frame 11, and the opening at the other end of the annular frame 11 is covered with the reflector 60, as shown in fig. 5.
In a specific embodiment, as shown in fig. 3 and 5, the annular boss 13 and the annular frame 11 are integrally formed, so that the annular boss 13 is integrally formed by protruding from the inner side wall of the annular frame 11, no additional connecting structure is required to be arranged between the annular boss 13 and the annular frame 11 for connection, no assembly gap exists, no light leakage occurs at the annular boss 13, and it is ensured that all light is reflected by the specular reflection layer 50 to exit through the light guide plate 30 and the light transmission plate 20, thereby further improving the uniformity of illumination.
In other embodiments of the present invention, as shown in fig. 3 and 5, the bottom surface of the annular boss 13 is parallel to the reflective mirror 60, the lamp panel 41 is attached to the bottom surface of the annular boss 13, and the lamp beads 40 are uniformly distributed on the lamp panel 41. So, the bottom surface that sets up annular boss 13 is parallel with reflector 60, and each lamp pearl 40 equals with reflector 60's spacing distance to further improve the homogeneity of light outgoing.
In other embodiments of the present invention, as shown in fig. 2 and 3, the top surface of the annular boss 13 is parallel to the reflective mirror 60, the light source device further includes a pressing plate 70 connected to the case 10, the pressing plate 70 is stacked on the light-transmitting plate 20 and located above the portion of the annular boss 13, and the pressing plate 70 is connected to the annular frame 11 of the case 10 and cooperates with the annular boss 13 to clamp the light-transmitting plate 20 and the light guide plate 30.
Further, in this embodiment, the pressing plate 70 is an annular pressing plate 70, the shape and size of which are matched with the annular bosses 13, the pressing plate 70 presses the light-transmitting plate 20 and the light guide plate 30 around the light-transmitting plate 20, so as to ensure that the light-transmitting plate 20 is stably mounted, and at the same time, the pressing plate 70 is made of a light-proof material, so that light can be shielded, and light can only be emitted from the light outlet 14 surrounded by the annular bosses 13.
In other embodiments of the present invention, as shown in fig. 3 and 5, the lamp bead 40 is an LED lamp bead 40, which is convenient to obtain, simple to install, and high in cost performance.
In the light source device of each embodiment of the present invention, the lamp beads 40 are uniformly distributed, which provides a basic guarantee for uniform emission of light, the light emitted by the uniformly distributed lamp beads 40 is reflected by the specular reflection layer 50 and then uniformly emitted toward the light guide plate 30, the light emitted by the lamp beads 40 is not directly projected to the light guide plate 30, and the brightness of part of the high-brightness light can be reduced, which is also helpful for improving the uniformity of the light brightness, in addition, the light is reflected and diffused by each light guide point in the light guide plate 30 and then emitted from the front side of the light guide plate 30, and the uniformity of the light emitted from the light guide plate 20 is further improved by various light guide points with different densities and sizes in the light guide plate 30, so that the light source device of the present application can meet the illumination requirement of high uniformity.
Another embodiment of the present invention further provides a camera testing system (not shown) for performing a performance test on a camera, where the camera testing system includes the light source device, and provides an ambient light source for the test by using the light source device, so as to complete the performance test on the camera, including at least a uniformity performance test.
According to the camera testing system provided by the embodiment of the utility model, the light source device is used as the testing environment light source, so that the light source device can provide stable and reliable uniform illumination, the requirement of the performance test of the camera is met, and the guarantee is provided for the performance test of the camera. In addition, the system for testing the performance of the camera of the present invention further includes other beneficial effects of the light source device of the above embodiments, which are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A light source device, comprising:
the light source comprises a box body, a light source and a light source, wherein the box body is hollow, one end of the box body is open, an annular boss is arranged on the inner wall surface of the open end of the box body, and the annular boss surrounds to form a light outlet;
the light transmitting plate is connected with the box body and is adapted to cover the light outlet;
the light guide plate is clamped between the light transmitting plate and the annular boss and covers the light outlet;
the lamp beads are uniformly distributed on the bottom surface of the annular boss, which is deviated from the light guide plate; wherein
The inner wall surface of the box body is positioned at the part below the annular boss and is covered with a mirror reflection layer.
2. The light source device according to claim 1, wherein: and the part of the inner wall surface of the box body, which is positioned below the annular boss, is covered with a specular reflection film so as to form the specular reflection layer.
3. The light source device according to claim 1, wherein: the light source device further comprises a reflector, the reflector is attached to the inner bottom surface of the box body, a part of the inner side wall of the box body, which is located below the annular boss, covers the mirror surface reflection film, and the surface of the reflector and the mirror surface reflection film form the mirror surface reflection layer.
4. The light source device according to claim 3, wherein: the box body comprises an annular frame and a bottom plate, the annular boss is arranged at one end of the annular frame, the part, below the annular boss, of the inner side wall of the annular frame covers the mirror surface reflection film, the bottom plate is arranged at the other end of the annular frame, and the reflector is attached to the upper surface, facing the annular boss, of the bottom plate.
5. The light source device according to claim 4, wherein: the annular boss and the annular frame are integrally formed.
6. The light source device according to claim 4, wherein: the bottom surface of the annular boss is parallel to the reflector.
7. The light source device according to any one of claims 1 to 6, wherein: the light-transmitting plate is a diffusion plate.
8. The light source device according to any one of claims 1 to 6, wherein: the light source device further comprises a pressing plate connected with the box body, the pressing plate is arranged above the light-transmitting plate and located above the annular boss, and the pressing plate and the annular boss are matched and clamped with the light-transmitting plate and the light guide plate.
9. The light source device according to any one of claims 1 to 6, wherein: the lamp beads are LED lamp beads.
10. A camera test system comprising the light source device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123269325.4U CN216930197U (en) | 2021-12-22 | 2021-12-22 | Light source device and camera test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123269325.4U CN216930197U (en) | 2021-12-22 | 2021-12-22 | Light source device and camera test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216930197U true CN216930197U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123269325.4U Active CN216930197U (en) | 2021-12-22 | 2021-12-22 | Light source device and camera test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216930197U (en) |
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2021
- 2021-12-22 CN CN202123269325.4U patent/CN216930197U/en active Active
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