Detection device for optical protective cover of camera

Abstract

The utility model relates to the technical field of protective cover detection equipment, in particular to a camera optical protective cover detection device which comprises a base, and a light transmitting plate, a comparison sample plate sheet, a light homogenizing plate and an LED lamp panel are sequentially arranged on the base from front to back. And the comparison sample plate sheet is provided with a specification mark for comparison. According to the utility model, the characteristic of uniform light source emission of the LED lamp panel is utilized, and the high-precision film is combined, so that the surface defect specification of the camera optical protection cover can be quickly and accurately judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to protective cover detection equipment technical field, especially a camera optical protective cover detection device. BACKGROUND

[0002] Transparent spherical cover injection molding is a common method of manufacturing camera optical protective cover. Its principle is to heat the transparent material (such as polycarbonate) to a molten state, then inject into the mold, after cooling and solidification, the finished product is taken out. Transparent imaging cover injection molding has the advantages of high production efficiency, relatively low cost, high manufacturing precision, and is widely used in the fields of automobile, electronic products, lighting equipment, etc.

[0003] But due to the high transparency of the camera spherical protective cover, surface defects or defects will be particularly obvious, these defects will largely block the lens, interfere with the camera autofocus function, cause the camera imaging quality to decline, so its appearance requirements are very high. But in the injection molding process, the product surface will inevitably have foreign matter points, bubbles, scratches and other defects, these surface defects of different specifications and shapes are difficult to be effectively and quickly judged by naked eye, causing the inspection of appearance defective products to be missed, on the one hand affecting the imaging performance of the product, leading to poor use effect of subsequent customers, on the other hand exceeding the customer's inspection standard of surface defects, which may cause complaints and cause great economic loss to the enterprise. Therefore, for these surface defects of different specifications and shapes, how to effectively, accurately and quickly judge them has become a difficulty for transparent spherical cover injection manufacturers to produce steadily. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a camera optical protective cover detection device, which can quickly identify the appearance defect specifications of the camera optical protective cover.

[0005] The utility model realizes the above-mentioned purpose by adopting the following technical scheme:

[0006] A camera optical protective cover detection device, comprising a base, the base is provided with a light transmission plate, a contrast sample plate, a light uniforming plate and an LED lamp plate from front to back; the contrast sample plate has specification marks for comparison.

[0007] Preferably, the top of the base is fixed with mounting seats at both ends, the inner side of the mounting seat is provided with a first groove body at the rear end for embedding the LED lamp plate, and the inner side of the mounting seat is provided with a second groove body at the front end for embedding the light transmission plate, the contrast sample plate and the light uniforming plate.

[0008] Preferably, the width of the first groove is 0.1-0.3mm larger than the width of the LED lamp plate, and the width of the second groove is 0.1-0.3mm larger than the total width of the light-transmitting plate, the contrast sample plate and the light-uniformizing plate.

[0009] Preferably, the LED lamp plate is an adjustable lamp plate with an illuminance value of 700-1500 lux.

[0010] Preferably, the light-uniformizing plate is a translucent milky white PMMA material or a PC material.

[0011] Preferably, the thickness of the light-uniformizing plate is 1-2mm.

[0012] Preferably, the light-transmitting plate is a fully transparent PMMA material or a PC material.

[0013] Preferably, the thickness of the light-transmitting plate is 1-3mm.

[0014] Preferably, the contrast sample plate is a film.

[0015] The present application has the following advantages:

[0016] (1) The structure is ingenious: the uniform light source can provide consistent and uniform illumination, reducing visual errors caused by uneven illumination, and the gradual standard design of the film makes it easier and more accurate to detect the appearance defects of the camera optical protective cover.

[0017] (2) The design structure is simple to operate and highly effective, allowing for rapid contrast testing and greatly improving the efficiency of test determination.

[0018] (3) The design is practical and can be widely used for defect determination of all transparent injection molded parts and even glass products.

[0019] (4) The design effectively improves product quality, reduces complaint risks and reduces economic losses for enterprises.

[0020] The present application utilizes the uniform light emission characteristics of the LED lamp plate and combines with high-precision film to achieve rapid and accurate determination of the surface defect specifications of the camera optical protective cover. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is a front view of the present application.

[0022] Fig. 2 is a left view of the present application.

[0023] Fig. 3 is an exploded view of the present application.

[0024] In the figure: base 1, light transmission plate 2, contrast sample sheet 3, light homogenizing plate 4, LED lamp plate 5, mounting seat 6, first groove body 61, second groove body 62. DETAILED DESCRIPTION

[0025] The utility model will be further described below in combination with the drawings.

[0026] As Figs. 1-3 shown, an embodiment is provided in the utility model, the embodiment provides a camera optical protective cover detection device, including base 1, the base 1 is sequentially provided with light transmission plate 2, contrast sample sheet 3, light homogenizing plate 4 and LED lamp plate 5 from front to back;The contrast sample sheet 3 has specification marks (not shown) for contrast. LED lamp plate 5 can provide light source. Light homogenizing plate 4 can further convert LED light source into more uniform light spot, reduces the visual error caused by uneven illumination. Light transmission plate 2 can further convert the light emitted by LED point light source into more uniform area light source. Contrast sample sheet 3 has a plurality of different shapes of points, lines or various shape patterns of gradually increasing specifications, as a standard sample, is used as intuitive contrast product surface point, scratch area, shape, length, diameter, width and other specifications whether exceed the benchmark, the specification of defect contrast can be defined according to actual use, such as: diameter 0.02 / 0.04 / 0.06 / 0.08 / 0.1 / 0.12 / 0.14 / 0.16 / 0.18 / 0.2 etc.

[0027] The left and right ends of the top of the base 1 are fixedly provided with mounting seats 6, the inner side of the mounting seat 6 is provided with a first groove body 61 at the rear end for embedding the LED lamp plate 5, for placing the LED lamp plate 5, and the inner side of the mounting seat 6 is provided with a second groove body 62 at the front end for embedding the light transmission plate 2, contrast sample sheet 3 and light homogenizing plate 4, for placing the light transmission plate 2, contrast sample sheet 3 and light homogenizing plate 4.

[0028] The working principle of the embodiment is as follows: 1) the LED lamp plate 5 is installed in the first groove body 61, and the lamp surface faces forward;2) the light homogenizing plate 4, contrast sample sheet 3 and light transmission plate 2 are overlapped and placed in sequence and installed in the second groove body 62, and the light homogenizing plate 4 faces the direction of the LED lamp plate 5;3) the LED lamp plate 5 is connected to the power supply, the brightness of the LED is adjusted, the illuminance value after passing through the light transmission plate 2 is tested by using an illuminometer, and the illuminance value is recommended to be between 400-500 lux (which can also be adjusted according to different needs of brightness);4) the hand holds the transparent camera optical protective cover 100 with defects, and according to different defects to be judged, the cover is close to the position of the contrast sample sheet 3, so that the defect can be intuitively and quickly compared in the standard interval of the contrast sample sheet 3. Whether the product defect meets the specified standard is quickly determined.

[0029] For example, the surface of the camera optical protective cover 100 has a defect of about 0.1mm2 The black point defect is not a defect specification, and when the upper limit of the defect specification is 0.1mm 2 The size of the defect corresponding to the defect can be covered, and whether the standard is exceeded can be determined.

[0030] In an embodiment of the utility model, this embodiment is based on the previous embodiment, the width of first groove body 61 is 0.1-0.3mm greater than the width of LED lamp panel 5, the width of second groove body 62 is 0.1-0.3mm greater than the total width of light transmission plate 2, contrast sample plate 3 and light homogenizing plate 4, facilitating installation and taking.

[0031] In an embodiment of the utility model, this embodiment is based on any one of the above embodiments, and the comfort degree during eye inspection work is combined to reduce the reflection or glare of product surface caused by excessively high illumination, and proper illumination can provide sufficient brightness to observe the defect details of product surface, and the details will not be lost due to excessive or dark, therefore, the illumination value in 700-1500lux is collectively considered as a skill to meet the appearance inspection requirements of optical products, and can guarantee the reasonable range of working efficiency of inspection personnel and product inspection quality, therefore, the LED lamp panel 5 is an adjustable lamp panel with an illumination value of 700-1500lux.

[0032] In an embodiment of the utility model, this embodiment is based on any one of the above embodiments, and based on the design principle of the device, point light sources or linear light sources need to be uniformly diffused into area light sources to reduce light reflection and direct reflection, so that soft lighting effect is achieved, therefore, the light homogenizing plate 4 is made of translucent milky white PMMA material or PC material, the two materials have high light transmittance and low density, and the light homogenizing plate is light and convenient to install and use.

[0033] In an embodiment of the utility model, this embodiment is based on any one of the above embodiments, the thickness of the light homogenizing plate 4 is 1-2mm, and the optimal thickness is 1.5mm, the thickness can provide good light diffusion effect and maintain high light transmittance, and ensure that the light source brightness of the LED lamp panel 5 will not be greatly reduced due to the thickness of the plate material.

[0034] In an embodiment of the utility model, this embodiment is based on any one of the above embodiments, when inspecting the defect specification of the product, the light transmittance of the light transmission plate directly contacting the product is required to be high, therefore, the light transmission plate 2 is made of fully transparent PMMA material or PC material.

[0035] In one embodiment of the utility model, this embodiment is based on any one of the above embodiments, the thickness of the light transmission plate 2 is 1-3mm, and the best is 2mm, the thickness can provide good light diffusion effect and keep higher light transmittance, ensure that the surface defect specification of the film is not affected by the too thick plate thickness.

[0036] In one embodiment of the utility model, this embodiment is based on any one of the above embodiments, the contrast sample plate piece 3 is the film, because it has very high resolution, the contrast of the defect and the normal surface is more obvious, and can keep high consistency when mass production, so in the field of optical elements, using the film to assist the surface defect comparison is a kind of industry standard usage.

[0037] The light transmission plate, the film, the light homogenizing plate, the LED lamp plate and the lux meter in the utility model are prior art, and the skilled person in the art can clearly understand, and detailed description is not carried out here.

[0038] The above only is the preferred embodiment of the utility model, and can not be understood as the limitation of the application, and any equivalent change and modification made according to the patent range of the utility model application should belong to the coverage range of the utility model.

Claims

1. A camera optical protector detection apparatus, characterized by, The base is provided with, from front to back, a light-transmitting plate, a contrast sample plate, a light-uniformizing plate and an LED lamp plate; the contrast sample plate has specification marks for contrast.

2. A camera lens cap detection device according to claim 1, wherein, The top and bottom ends of the base are fixed with mounting seats, the inner side of the mounting seat is provided with a first groove at the rear end for embedding the LED lamp plate, and the inner side of the mounting seat is provided with a second groove at the front end for embedding the light-transmitting plate, the contrast sample plate and the light-uniformizing plate.

3. A camera optical cover detection apparatus according to claim 2, wherein, The width of the first groove is 0.1-0.3mm larger than the width of the LED lamp plate, and the width of the second groove is 0.1-0.3mm larger than the total width of the light-transmitting plate, the contrast sample plate and the light-uniformizing plate.

4. A camera lens cap detection device according to any one of claims 1-3, wherein, The LED lamp plate is an adjustable lamp plate with an illuminance value of 700-1500lux.

5. A camera lens cap detection device according to any one of claims 1-3, wherein, The light-uniformizing plate is a semi-transparent, milky-white PMMA material or PC material.

6. A camera optical cover detection apparatus according to claim 5, wherein, The thickness of the light-uniformizing plate is 1-2mm.

7. A camera lens cap detection device according to any one of claims 1-3, wherein, The light-transmitting plate is a fully-transparent PMMA material or PC material.

8. A camera optical cover detection apparatus according to claim 7, wherein, The thickness of the light-transmitting plate is 1-3mm.

9. A camera lens cap detection device according to any one of claims 1-3, wherein, The contrast sample plate is a film.

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