A flash lamp cover with eccentric light compensation

Abstract

The utility model discloses a flash lamp shade of eccentric light compensation, include: main part, stretch out, light entrance surface and light exit surface, main part with stretch out department link, light entrance surface set up in the bottom of main part, it has annular fresnel tooth, light exit surface sets up in the top of stretch out department, light exit surface is inclined surface. The utility model has beneficial effect in that, set up the angle of light exit of inclined light exit surface adjustment, suitable for the case of luminescent device and lampshade eccentricity, guarantee light -emitting even, and the annular fresnel tooth of light entrance surface can carry out effective convergence and homogenization treatment to incident light, thereby promote overall light compensation effect.

Description

Technical Field

[0001] This utility model relates to the field of lampshade technology, specifically to an eccentric fill light flash lampshade. Background Technology

[0002] Mobile phone cameras are an essential function of mobile phones. People have increasingly higher demands for image quality, which places higher demands on camera pixel counts. As camera pixel counts increase, the brightness of the captured image also increases. Flash covers can enhance the brightness of captured images, meeting the brightness requirements for photography. Current flash covers need to ensure the flash and cover are concentrically positioned. However, in practical applications, as more and more mobile phones are becoming thinner and lighter, the components are stacked more compactly. Due to internal space constraints, sometimes the light-emitting device and the cover are not concentric, leading to uneven light output. Therefore, there is an urgent need for a flash cover that can accommodate misalignment of the light-emitting device and cover while ensuring uniform light output. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an eccentric supplementary lighting flash cover, which ensures uniform light emission even when the light-emitting device is not concentric with the center of the cover, ensures uniform light spot and reduces shadows, increases the installation space for other devices, and meets the requirements of compact setup.

[0004] Specifically, this utility model discloses an eccentric fill light flash cover, including: a main body, an extension, a light-incident surface, and a light-exiting surface. The main body and the extension are connected. The light-incident surface is located at the bottom of the main body and has annular Fresnel teeth. The light-exiting surface is located at the top of the extension and is an inclined surface.

[0005] The advantages of adopting the above technical solution are that setting an inclined light-emitting surface adjusts the angle of light emission, which is suitable for situations where the light-emitting device and the lampshade are not concentric, ensuring uniform light emission and meeting the requirements of compact setup. At the same time, the annular Fresnel teeth on the light-incident surface can effectively converge and homogenize the incident light, thereby improving the overall supplementary lighting effect.

[0006] Furthermore, the top of the protrusion has uniformly arranged strip-shaped Fresnel teeth.

[0007] The advantage of adopting the above technical solution is that setting strip-shaped Fresnel teeth on the light-emitting surface increases the diffusion effect of the light-emitting surface, making the light emission more uniform, effectively eliminating local bright spots or dark areas, and enabling the light to achieve multi-directional homogenization during propagation, thereby improving the overall uniformity of the supplementary light.

[0008] Furthermore, the protrusion is cylindrical in shape, and the center of the annular Fresnel tooth is not on the same straight line as the center of the protrusion.

[0009] The advantage of adopting the above technical solution is that, during use, the center of the annular Fresnel tooth is aligned with the flash, which is suitable for installation requirements when the flash and the lamp cover are not concentric. It ensures that the light from the flash passes through the annular Fresnel pattern and is further refracted by the inclined surface of the protruding part, avoiding the problem of reduced light utilization and uneven light output caused by eccentricity. This makes the mobile phone structure more compact, the light output more uniform, and provides more installation space.

[0010] Furthermore, the tooth spacing of the strip Fresnel tooth is between 0.08 and 0.12 mm, and the tooth depth is between 0.105 and 0.115 mm.

[0011] The advantage of adopting the above technical solution is that it limits the tooth spacing and tooth depth of the strip Fresnel teeth, achieving the best light refraction and diffusion effect within this range, and ensuring uniform light output.

[0012] Furthermore, the tilt angle of the light-emitting surface is between 10 and 20 degrees.

[0013] The advantage of adopting the above technical solution is that the angle of the light-emitting surface is adapted to the center distance between the main body and the protruding part, which maximizes the diffusion of all the light emitted by the flash lamp, ensuring the brightness of the light source and the soft and uniform light output.

[0014] Furthermore, the area on the light-incident surface where the annular Fresnel teeth are located is rectangular, with rounded corners on both sides, and the annular Fresnel teeth are evenly distributed.

[0015] The advantage of adopting the above technical solution is that it ensures that the Fresnel tooth area of ​​the light-receiving surface is within a suitable range, while making the overall appearance more aesthetically pleasing.

[0016] Furthermore, the overall thickness of the main body and the protruding part is between 2 and 3 mm.

[0017] The advantage of adopting the above technical solution is that the entire lampshade is thin and lightweight, and it is suitable for the design of ultra-thin electronic products while ensuring uniform light output.

[0018] Furthermore, the main body is irregularly shaped, with recessed portions and arc-shaped protrusions on its sides.

[0019] The advantages of adopting the above technical solution are that the main body is set in an irregular shape, which is suitable for different installation spaces and has a good collision avoidance function. At the same time, the setting of the arc protrusion makes the entire main body have rounded corners, increasing the impact resistance.

[0020] Furthermore, the strip-shaped Fresnel tooth has a first side and a second side, the first side being inclined and the second side being vertical. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 This is a schematic diagram of the overall structure of the eccentric fill light flash lamp cover of this utility model.

[0023] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0024] Figure 3 This is a side sectional view of the present invention.

[0025] Figure 4 This is an enlarged view of section A of this utility model.

[0026] Figure 5 This is a lower view of the structure of this utility model.

[0027] Figure 6 This is a schematic diagram of light refraction in this utility model.

[0028] The reference numerals used in the attached figures are as follows:

[0029] Main body 1; recessed part 11; arc protrusion 12; protrusion 2; light-entry surface 3; light-exit surface 4; annular Fresnel tooth 41; strip Fresnel tooth 5; first side surface 51; second side surface 52. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] like Figure 1-6 As shown, this utility model discloses an eccentric fill light flash cover, including: a main body 1, an extension 2, a light-incident surface 3 and a light-exiting surface 4. The main body 1 and the extension 2 are connected. The light-incident surface 3 is disposed at the bottom of the main body 1 and has annular Fresnel teeth 41. The light-exiting surface 4 is disposed at the top of the extension 2 and is an inclined surface.

[0032] The advantages of adopting the above technical solution are that the inclined light-emitting surface 4 is set to adjust the angle of light emission, which is suitable for situations where the light-emitting device and the lamp cover are not concentric, ensuring uniform light emission and reducing the problem of uneven light distribution caused by the eccentric setting. At the same time, the annular Fresnel teeth 41 of the light-incident surface 3 can effectively converge and homogenize the incident light, thereby improving the overall supplementary lighting effect.

[0033] In some embodiments, the top of the protrusion 2 has uniformly arranged strip Fresnel teeth 5, which are uniformly arranged on the light-emitting surface 4, along the length direction of the protrusion 2, and evenly distributed on the entire light-emitting surface 4 to ensure uniform light emission.

[0034] Furthermore, the strip-shaped Fresnel tooth 5 has a first side surface 51 and a second side surface 52. The first side surface 51 is inclined, and the second side surface 52 is vertical. The first side surface 51 is inclined in the same direction as the light-emitting surface 4. The inclination angle is determined according to the center position of the light-incident surface 3 and the light-emitting surface 4, which refracts the light entering from the light-incident surface 3, making the light emission more uniform.

[0035] Furthermore, the tooth spacing of the strip Fresnel tooth 5 is between 0.08 and 0.12 mm, and the tooth depth is between 0.105 and 0.115 mm. Specifically, a strip Fresnel tooth 5 with a tooth spacing of 0.10 mm, a tooth depth of 0.110 mm, and an R-angle of 0.012 mm can be used to achieve the best light refraction and diffusion effect, ensure uniform light output, effectively eliminate local bright spots or dark areas, and enable the light to achieve multi-directional homogenization during propagation, thereby improving the overall uniformity of supplementary lighting.

[0036] Furthermore, the tilt angle of the light-emitting surface 4 is between 10 and 20 degrees. The angle of the light-emitting surface 4 is set to match the center distance between the main body 1 and the protruding part 2, maximizing the diffusion of all light emitted by the flash and ensuring both brightness and soft, uniform light output. (See attached...) Figure 3 The inclined plane with an angle of 10.5 degrees is used to ensure that the usage requirements are met.

[0037] In some embodiments, the protrusion 2 is cylindrical in shape, and the center of the annular Fresnel tooth 41 is not on the same straight line as the center of the protrusion 2. (Appendix to this application) Figure 3 In the middle, the distance between the two centers is 0.17mm.

[0038] During use, the center of the annular Fresnel tooth 41 is aligned with the flash, which is suitable for installation needs when the flash and the lamp cover are not concentric. It ensures that the light from the flash passes through the annular Fresnel pattern and is then further refracted through the protrusion 2, avoiding the problem of reduced light utilization and uneven light output caused by eccentricity. This makes the phone structure more compact and provides more installation space.

[0039] In some implementations, the area of ​​the light-receiving surface 3 where the annular Fresnel teeth 41 are set is rectangular, with rounded corners on both sides, and the annular Fresnel teeth 41 are evenly distributed.

[0040] Furthermore, the overall thickness of the main body 1 and the protruding part 2 is between 2 and 3 mm. The entire lampshade is thin and lightweight, making it suitable for the design of ultra-thin electronic products while ensuring uniform light output.

[0041] Furthermore, the main body 1 has an irregular shape, with a recessed portion 11 and a rounded protrusion 12 on its side. The irregular shape of the main body 1 is suitable for different installation spaces and has a good obstacle avoidance function. At the same time, the rounded protrusion 12 gives the entire main body 1 rounded corners, increasing its impact resistance.

[0042] In some implementations, the incident light surface 3 has an annular Fresnel tooth 41 with a radius of 0.02 mm, a tooth depth of 0.11 mm, a tooth pitch of 0.12 mm, a field of view (FOV) of 85 degrees, and a center brightness that meets the uniformity of 25% with a FOV of 75 LUX and a FOV of 1.0.

[0043] The flash cover in this application meets the trend of increasingly thinner and lighter mobile phones. The internal components can be stacked more compactly without being limited by internal space. The center of the light-emitting device and the center of the cover can be different to ensure the consistency of the emitted light and meet performance requirements.

[0044] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A flash lamp cover for off-center light compensation, characterized by, include: The main body (1), the protrusion (2), the light-incident surface (3) and the light-exiting surface (4) are connected. The light-incident surface (3) is located at the bottom of the main body (1) and has annular Fresnel teeth (41). The light-exiting surface (4) is located at the top of the protrusion (2) and is an inclined surface.

2. The off-center fill flash cover of claim 1, wherein, The top of the protrusion (2) has uniformly arranged strip Fresnel teeth (5).

3. The off-center fill flash cover of claim 1, wherein, The protrusion (2) is cylindrical in shape, and the center of the annular Fresnel tooth (41) is not on the same straight line as the center of the protrusion (2).

4. The eccentric fill light flash cover according to claim 2, characterized in that, The spacing between the teeth of the strip Fresnel teeth (5) is between 0.08 and 0.12 mm, and the tooth depth is between 0.105 and 0.115 mm.

5. The off-center fill flash gobo of claim 1, wherein, The tilt angle of the light-emitting surface (4) is 10~20 degrees.

6. The off-center fill flash cover of claim 1, wherein, The area where the annular Fresnel teeth (41) are set on the light-incident surface (3) is rectangular, with rounded corners on both sides, and the annular Fresnel teeth (41) are evenly distributed.

7. The eccentric fill light flash cover according to claim 1, characterized in that, The overall thickness of the main body (1) and the protruding part (2) is between 2 and 3 mm.

8. The eccentric fill light flash cover according to claim 1, characterized in that, The main body (1) has an irregular shape, with a recessed part (11) and a rounded protrusion (12) on its side.

9. The eccentric fill light flash cover according to claim 2, characterized in that, The strip Fresnel tooth (5) has a first side (51) and a second side (52), the first side (51) being inclined and the second side (52) being vertical.

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