CN218958983U

CN218958983U - HDR test lamp box for camera

Info

Publication number: CN218958983U
Application number: CN202223107850.0U
Authority: CN
Inventors: 张建龙; 黄庭纬; 屠洪荣; 熊鑫
Original assignee: Thousand Lights Lighting Changzhou Ltd
Current assignee: Thousand Lights Lighting Changzhou Ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-05-02
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses an HDR (high-definition digital testing) lamp box for a camera, which comprises a box body, wherein the box body comprises an outer shell and an inner shell which are connected with each other, a light source is arranged on the inner shell, the inner shell comprises a mounting end and a connecting end which are connected with each other, one end, far away from the mounting end, of the connecting end is a back plate, the mounting end is formed by connecting side plates of four trapezoid structures, long sides of the side plates are connected with the connecting end, oblique sides of the side plates are connected with each other, the side plates are obliquely arranged relative to the back plate, the light source is annularly arranged on the four side plates of the mounting end, and a light diffusion plate is arranged at the front end of the light source. The synchronous test of each exposure level of the camera can be realized through stacking a plurality of boxes, the back plate is uniform in light filling, and the imaging quality is high.

Description

HDR test lamp box for camera

Technical Field

The utility model relates to a camera HDR test lamp box.

Background

HDR is a High Dynamic Range image (referred to as High-Dynamic Range, abbreviated as HDR), and can provide more Dynamic Range and image details than a normal image, and is generally used in image video shooting production. Because the dynamic range of the photosensitive element of the camera is limited, when in actual photographing, if the field light ratio is particularly strong, if the exposure is determined according to strong light, a piece of light is dead black at the weak light position, and no hierarchy is seen; if the exposure is determined at the weak light, a piece of white is dead at the strong light. HDR is to press the strong light part without overexposure through internal processing of the machine, and to promote the weak light part to have a certain level.

Because HDR is widely applied to cameras of electronic products such as mobile phones, performance of the HDR needs to be tested in a production process, and a real scene needs to be created by means of a lamp box during the test. Most of the light sources of the current commonly used HDR test lamp box are generated from the top lamp cap and are lighted downwards through a diffusion mechanism. The lamp box has good uniformity of the bottom surface, and the part of the back plate, which is closer to the light source, is brighter, so that the lamp box is only suitable for color matching. Of course, there are also some light boxes that shine from the front end of the back plate, such as a low-illumination wide-angle standard light box published in chinese patent publication No. CN106657993B, in which an annular light bar is disposed at the front end of the back plate to shine, but the purpose is to test imaging devices with different wide angles, and the requirement for uniformity of light is low. If the device is applied to the HDR test of the camera, the camera still has the defects of poor lighting uniformity of the back plate, poor quality of images shot by the camera and the like because the camera still shoots color cards, objects and the like on the back plate of the lamp box, and the part of the back plate of the lamp box, which is closer to the edge, is brighter.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: overcomes the defects of the prior art, provides a camera HDR test lamp box, which can realize synchronous test of each exposure level of a camera through stacking a plurality of boxes, and the backboard has uniform light filling and high imaging quality.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a camera HDR test lamp house, includes the box, the box includes interconnect's shell and inner shell, be equipped with the light source on the inner shell, the inner shell includes interconnect's installation end and link, keep away from on the link the one end of installation end is the backplate, the installation end is formed by four trapezium structure's curb plate links to each other, the long limit of curb plate with the link links to each other, the hypotenuse interconnect of curb plate makes the curb plate is relative the backplate is the slope setting, the light source is annular and installs on four curb plates of installation end, light diffuser plate is installed to the light source front end.

Further, the oblique sides of the side plates are mutually connected to enable the mounting ends to be in a closed shape, one large-caliber end of each mounting end is connected with the connecting end, and one small-caliber end of each mounting end is connected with the shell.

Further, a connection mode of the outer shell and the inner shell is provided, the outer shell is fixedly connected with the connection end, an opening is formed in the outer shell, and the opening is connected with the small-caliber end of the installation end.

Further, in order to make the shell can shield the light source, the caliber of the opening is slightly smaller than that of the small caliber end of the mounting end.

Further, a specific structure of the light source is provided, the light source comprises six LED lamp panels, and the LED lamp panels are embedded in the side plates of the mounting end.

Furthermore, for the incident light fills the disperse color with this effect that produces optical diffusion, LED lamp plate front end is provided with the light diffusion plate, the light diffusion plate with LED lamp plate passes through double-screw bolt fixed connection.

Further, in order to radiate heat for the LED lamp panel, a radiator fan is further arranged on the mounting end, and the radiator fan is arranged on the outer side wall of the LED lamp panel arranged on the mounting end.

Further, in order to improve heat dissipation performance, a plurality of heat dissipation holes are formed in the shell.

Further, for convenience in carrying, at least one handle is respectively arranged on two sides of the shell.

Further, the box body is also provided with a communication interface and a power socket.

By adopting the technical scheme, the utility model has the following beneficial effects: the number of the boxes can be freely set and combined, so that synchronous test of each exposure level of the camera can be realized; the light source is annular and arranged in the box body, and the light source and the backboard are arranged oppositely, so that the box body backboard has very high light supplementing uniformity, and the imaging quality of the camera is greatly improved.

Drawings

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

FIG. 2 is a schematic view of another angle structure of the present utility model;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;

FIG. 5 is a schematic view of the inner shell of FIG. 1;

FIG. 6 is a schematic view of the structure of FIG. 5 with the back plate removed;

fig. 7 is a schematic diagram illustrating connection between the back plate and the LED lamp panel in fig. 6.

Reference numerals: 1 box body, 2 outer shell, 3 inner shell, 4 light source, 5 back plate, 11 communication interface, 12 power socket, 21 opening, 22 handle, 23 heat radiation hole, 24 bottom corner, 30 connecting plate, 31 mounting end, 32 connecting end,

311 side plates, 41LED lamp panels, 42 light diffusion plates, 43 cooling fans and 44 studs

Detailed Description

In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

As shown in fig. 1 to 7, in this embodiment, a camera HDR test light box is provided, which includes a box 1, three boxes 1 may be adopted and the three boxes 1 are placed in a "delta" shape, so that the high exposure, normal exposure and low exposure tests of the camera can be simultaneously implemented to test the dynamic range of the exposure of the camera, which is not limited to the number and placement modes. In other embodiments, not shown, the number of boxes 1 may also be two, only high exposure and low exposure being tested.

As shown in fig. 1 to 4, in this embodiment, the case 1 has a rectangular parallelepiped structure with one end open, and a light source 4 is provided in the case 1. The box 1 includes interconnect's inner shell 3 and shell 2, has installation end 31 on the inner shell 3 for install light source 4, link to each other with installation end 31 on the inner shell 3 for link to each other 32, link 32 is one end open-ended cuboid structure, is equipped with backplate 5 on the link 32 with the one end that open-ended is relative, and during the test, objects such as colour chip paste on backplate 5.

Specifically, as shown in fig. 5, the mounting end 31 is formed by connecting four side plates 311, which are in a trapezoid structure, in an upper, lower, left and right manner, the long sides of the four side plates 311 are connected with the connecting end 32, the oblique sides of the four side plates 311 are connected with each other, so that the mounting end 31 is in a closed shape, and the upper, lower, left and right side plates 311 are all inclined with respect to the back plate 5. The long sides of the upper and lower side plates 311 correspond to the long side of the connecting end 32, the long sides of the left and right side plates 311 correspond to the short side of the connecting end 32, and the light source 4 is annularly disposed on the upper, lower, left and right side plates 311 of the mounting end 31, and the upper, lower, left and right side plates 311 are obliquely disposed with respect to the back plate 5, so that the light source 4 can face the back plate 5 after being mounted on the side plates 311.

As shown in fig. 4, the outer shell 2 is sleeved outside the inner shell 3 and is connected with the connecting end 32 on the inner shell 3 through the connecting plate 30, the outer shell 2 is provided with an opening 21, the caliber of the opening 21 is slightly smaller than that of the small caliber end of the mounting end 31 of the inner shell 3, the opening 21 is connected with the end of the small caliber end of the mounting end 31, the opening 21 of the outer shell 2 plays a role of shielding the light source 4, and the outer shell 2 is sleeved outside the inner shell 3 and can shield dust.

As shown in fig. 6, in the present embodiment, the light source 4 includes six LED lamp panels 41 disposed at the mounting end 31 of the inner housing 3, the six LED lamp panels 41 are annularly surrounding the inside of the opening side of the case 1, specifically, the LED lamp panels 41 are embedded in four side plates 311 of the mounting end 31 of the inner housing 3, wherein two LED lamp panels 41 are disposed on the upper and lower side plates 311, the LED lamp panels 41 on the upper and lower side plates 311 are symmetrical to each other, one LED lamp panel 41 is disposed on the left and right side plates 311, and the LED lamp panels 41 on the left and right side plates are also symmetrical to each other.

The front end of each LED lamp panel 41 is provided with a light diffusion plate 42, specifically, as shown in fig. 7, the light diffusion plate 42 is fixedly connected with the LED lamp panels 41 through studs 44. The light diffusion plate 42 is used for manually adjusting light rays to refract, reflect and scatter the light rays in different directions, so that the light traveling route is changed, and the effect of fully dispersing the incident light to generate optical diffusion is achieved.

Six LED lamp plates 41 set up in the installation end 31 department of inner shell 3, because the upper and lower, left and right four curb plates of installation end 31 all are the slope setting relative backplate 5, make LED lamp plate 41 gomphosis on inner shell 3 after the class towards backplate 5, thereby make the light that LED lamp plate 41 diverged can directly beat on backplate 5 evenly after the diffusion of light diffuser plate 42, simultaneously, shell 2 cover is established outside inner shell 3 and the bore of opening 21 on shell 2 is slightly less than the aperture of the little mouth of installation end 31 of inner shell 3, when the test, shell 2 can play the effect of shielding the light source, LED lamp plate 41 can not directly be shot to the camera, the stability of test has been improved.

The installation end 31 of the inner shell 3 is also provided with cooling fans 43, the cooling fans 43 are arranged on the outer side wall of the installation end 31, which is provided with the LED lamp panels 41, 6 cooling fans 43 are provided, each LED lamp panel 41 is provided with one cooling fan 43, and the cooling fans 43 radiate heat for the front end LED lamp panels 41.

In order to ensure the uniformity of polishing and improve the light efficiency, the inner side wall of the inner shell 3 is coated with a diffuse reflection coating, and the diffuse reflection coating is composed of a base material, a diffuse reflection material, a high heat conduction material, a filler and the like, so that the luminous efficiency can be improved, glare or light spots can be eliminated, good light color consistency can be ensured, and the diffuse reflection coating is an existing material well known to a person skilled in the art, and the specific components of the diffuse reflection coating are not repeated in the embodiment.

As shown in fig. 2, the box 1 is provided with a communication interface 11, so that serial communication between a plurality of boxes 1 and a PC computer can be realized. Meanwhile, each box 1 is provided with an independent power socket 12, so that independent control of each box 1 can be realized.

As shown in fig. 1-2, a plurality of heat dissipation holes 23 are formed in the outer shell 2, and the heat dissipation holes 23 near one end of the opening 21 in the outer shell 2 correspond to the heat dissipation fans 43 in the inner shell 3, two handles 22 are respectively arranged on two sides of the outer shell 2, so that the carrying of the box 1 can be facilitated, a bottom corner 24 is arranged at the bottom of the box 1, the stacking of the box 1 can be facilitated on one hand, and a certain space can be reserved when the box 1 contacts with the ground or other boxes 1 on the other hand, so that the heat dissipation performance of the box 1 is improved.

When in use, the box bodies 1 with different numbers can be opened respectively according to the conditions of high exposure, normal exposure or low exposure which are required to be tested, so as to meet different requirements of ambient light.

The technical problems, technical solutions and advantageous effects solved by the present utility model have been further described in detail in the above-described embodiments, and it should be understood that the above-described embodiments are only illustrative of the present utility model and are not intended to limit the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. The utility model provides a camera HDR test lamp house, includes box (1), box (1) are including interconnect's shell (2) and inner shell (3), be equipped with light source (4), its characterized in that on inner shell (3): the inner shell (3) comprises a mounting end (31) and a connecting end (32) which are connected with each other, one end, far away from the mounting end (31), of the connecting end (32) is a back plate (5), the mounting end (31) is formed by connecting four side plates (311) with trapezoid structures, the long sides of the side plates (311) are connected with the connecting end (32), oblique sides of the side plates (311) are connected with each other so that the side plates (311) are obliquely arranged relative to the back plate (5), a light source (4) is annularly arranged on the four side plates (311) of the mounting end (31), and a light diffusion plate (42) is arranged at the front end of the light source (4).

2. The camera HDR test light box of claim 1, wherein: the hypotenuse interconnect of curb plate (311) makes installation end (31) are the binding off form, the heavy-calibre one end of installation end (31) with link to each other end (32), the small-calibre one end of installation end (31) with shell (2) link to each other.

3. The camera HDR test light box of claim 2, wherein: the shell (2) is fixedly connected with the connecting end (32), an opening (21) is formed in the shell (2), and the opening (21) is connected with the small-caliber end of the mounting end (31).

4. A camera HDR test light box in accordance with claim 3, wherein: the aperture of the opening (21) is slightly smaller than the aperture of the small-aperture end of the mounting end (31).

5. The camera HDR test light box of claim 2, wherein: the light source (4) comprises six LED lamp panels (41), and the LED lamp panels (41) are embedded in the side plates (311) of the mounting end (31).

6. The camera HDR test light box of claim 5, wherein: the front end of the LED lamp panel (41) is provided with a light diffusion plate (42), and the light diffusion plate (42) is fixedly connected with the LED lamp panel (41) through a stud (44).

7. The camera HDR test light box of claim 5, wherein: and the mounting end (31) is also provided with a cooling fan (43), and the cooling fan (43) is arranged on the outer side wall of the mounting end (31) where the LED lamp panel (41) is arranged.

8. The camera HDR test light box of claim 1, wherein: a plurality of heat dissipation holes (23) are formed in the shell (2).

9. The camera HDR test light box of claim 1, wherein: at least one handle (22) is arranged on two sides of the shell (2).

10. The camera HDR test light box of claim 1, wherein: the box body (1) is also provided with a communication interface (11) and a power socket (12).