Periscopic camera module

Abstract

The utility model relates to the field of periscopic cameras, and discloses a periscopic camera module which comprises a prism base and a lens assembly, a first prism and a second prism are fixedly connected in the prism base, a first silk-screen layer is arranged on the side face, close to the second prism, of the first prism, and the first prism is fixedly connected with the second prism; light absorption ink layers are arranged on the side faces of the first prism and the second prism, a first blank area and a second blank area are reserved on the light absorption ink layers of the first prism and the second prism respectively, second silk-screen layers are arranged on the two areas, and openings are formed in the first silk-screen layers and the second silk-screen layers; the top of the first prism is provided with a motor assembly, and the lens assembly is installed in the motor assembly. The top of the second prism is provided with a filtering assembly, and the top of the filtering assembly is fixedly connected with a photosensitive assembly. According to the scheme, the problems that an existing integral prism is difficult to block stray light and the imaging quality is poor due to large refraction loss are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to periscopic camera field, concretely relates to a periscopic camera module. BACKGROUND

[0002] In the mobile internet era, users have double high requirements for the thinness and image shooting function of mobile terminal equipment. Periscopic camera module, with its unique light path folding design, can realize long shot without significantly increasing the thickness of the equipment, and has become the key technology for improving the image capability of smart devices such as mobile phones, and has been widely used. The module is mainly composed of prism, lens assembly, filter plate and photosensitive chip and other core components, among which the prism as the core optical element to realize the light path turning directly determines the optical performance and imaging quality of the module.

[0003] At present, in the periscopic camera module on the market, the prism mostly adopts the overall structure design of a whole prism. Although this structure can realize the basic light path folding function, it has many defects in actual use. First, the whole prism is difficult to effectively block stray light, resulting in reflection and refraction of light in the non-key area of the prism, which reduces the clarity and purity of the picture; second, when the light propagates in the prism, due to the optical properties of the material itself and the limitation of the overall prism structure, there is a large refraction loss, which causes serious loss of light energy. This directly leads to the problem of brightness drop and insufficient contrast of the imaging picture, and the color reproduction degree is also difficult to reach the ideal level, which cannot meet the user's demand for high-quality image shooting. UTILITY MODEL CONTENTS

[0004] The utility model intends to provide a periscopic camera module to solve the problem of poor imaging quality caused by the difficulty of blocking stray light and large refraction loss of the existing overall prism, realize the purpose of reducing stray light interference and light refraction loss, and further improve the clarity, brightness, contrast and color reproduction degree of the imaging picture.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a periscopic camera module, including prism base and lens assembly, the prism base is fixedly connected with one prisms and two prisms, the side of one prisms close to two prisms is equipped with one silk screen layer, and one silk screen layer is equipped with one opening, and one prisms is fixedly connected with two prisms.

[0006] The beneficial effects of the scheme are: (1) efficient light transmission and reduced loss: when the light is input by the lens assembly, it first enters the one prisms, then is refracted and smoothly transitions to the two prisms, is reflected to the filter assembly, and finally reaches the photosensitive assembly. In this process, the openings on the one silk screen layer and the two silk screen layer are the key channels for light transmission, and their accurate design ensures that the light can propagate with high pass rate, effectively reduces unnecessary refraction and scattering loss, ensures the required light intensity for imaging, and fundamentally reduces the energy loss of light in the propagation process, thereby improving the brightness of the imaging picture.

[0007] (2) stray light suppression and imaging clarity improvement: the light-absorbing ink layer has very low light reflectivity and can maximize the absorption of stray light, preventing light from reflecting and refracting in the non-critical area of the prism and mixing into the imaging light path. This solves the problem of stray light interference from the source, effectively avoids phenomena such as light halo, blur, aberration, and dispersion in the image, significantly improves the clarity and purity of the image, and makes the details of the captured picture more rich and sharp.

[0008] (3) process optimization and optical efficiency improvement: the original whole prism is divided into one prisms and two prisms by laser cutting process. This design makes the processing technology simpler, creates more space for internal optical structure optimization in subsequent processing steps, and facilitates differentiated function customization for different areas, thereby fundamentally changing the interaction mode of light in the prism and improving the overall optical efficiency.

[0009] (4) Light guiding and image definition enhancement: A first silk screen layer and a first opening are arranged between the first prism and the second prism, which not only ensures sufficient light transmittance, but also effectively guides the flow of light and reduces the disordered propagation of light. This provides better light conditions for the subsequent lens group focusing, so that the light can be more accurately focused on the photosensitive component, thereby further improving the definition of the image.

[0010] (5) Contrast and color performance enhancement: The absorption of stray light by the light-absorbing ink layer purifies the imaging light path and improves the contrast of the image. Based on high contrast, the color of the captured picture is more vivid and the level of detail is more distinct, enhancing the imaging performance of the camera module and allowing users to obtain high color reproduction and good visual effect of the image.

[0011] (6) Enhanced structural stability and reliability: The first prism and the second prism are fixed by the contact surface glue, which ensures the structural stability of the prism assembly. In the daily use of the module, it can effectively resist external vibration and impact, ensure the accurate relative position between the prisms, and thus ensure the stability of the light propagation path, improving the reliability and service life of the camera module.

[0012] (7) Improved focusing flexibility: The motor assembly can drive the lens assembly to achieve focusing function, so that the lens can flexibly focus according to the distance of the shooting object. This design greatly enhances the focusing ability of the camera module, whether shooting close-up or long-distance scenery, it can quickly and accurately complete focusing and shoot clear and sharp images.

[0013] Further, the thickness of the first silk screen layer, the second silk screen layer and the light-absorbing ink layer is 0.01-0.015mm.

[0014] The beneficial effects of the present scheme are: the thickness of the first silk screen layer, the second silk screen layer and the light-absorbing ink layer is set to 0.01-0.015mm, which balances the size control and function realization. If the thickness is too large, it will significantly increase the overall size of the prism assembly, which is easy to cause the size of the module assembly to exceed the standard, affecting the lightweight design of the periscope camera module; and if the thickness is too thin, it is difficult to fully play the role of blocking stray light, and it cannot effectively absorb and shield non-imaging light. This thickness range can not only ensure that each layer of material accurately plays the functions of blocking stray light and guiding light, but also meet the strict requirements of precise optical components on size accuracy.

[0015] Further, the first opening and the second opening are both sawtooth-shaped.

[0016] The beneficial effects of the scheme are that the first opening and the second opening are designed as sawtooth shapes, and high-efficiency stray light shielding is realized through the unique geometric structure. When light is incident on the sawtooth-shaped opening, the irregular surface will cause multiple scattering and diffuse reflection of light, and the light energy is continuously absorbed and lost in the repeated reflection process. It is difficult for stray light at a specific angle to enter the imaging light path. Compared with the conventional shape opening, the sawtooth structure greatly prolongs the propagation path of stray light at the opening, enhances the interception and filtering capability of stray light, effectively reduces the interference of stray light on imaging, and thus improves the picture clarity and purity, ensuring the imaging quality.

[0017] Further, the light-absorbing ink layer, the first silk screen layer and the second silk screen layer all adopt black ink.

[0018] The beneficial effects of the scheme are that the light-absorbing ink layer, the first silk screen layer and the second silk screen layer all adopt black ink, which can fully play the strong absorption characteristics of black to light. The black ink can effectively absorb stray light in all directions, avoid reflection of light on the prism surface and non-critical area into the imaging light path, and has higher absorption efficiency than other color inks.

[0019] Further, the surface of the second silk screen layer is covered with a reflective film.

[0020] The beneficial effects of the scheme are that the surface of the second silk screen layer is covered with a reflective film, which can efficiently reflect the light entering the second opening, further regularize the light path, and reduce the scattering and loss of light on the side surface of the prism.

[0021] Further, the prism base comprises a fixed frame, and a Mylar plate is fixedly connected to the bottom of the fixed frame.

[0022] The beneficial effects of the scheme are that the Mylar plate has excellent insulation and light blocking performance, and after being fixed to the bottom of the fixed frame, it can effectively block stray light from the bottom of the module, avoid the stray light from entering the imaging light path and interfering with the propagation of light, and reduce the influence of stray light on the imaging quality. At the same time, its insulation characteristics can also provide protection for internal electronic components, enhance the structural stability of the prism base and the overall reliability of the module.

[0023] Further, the light filtering assembly comprises a light filtering support and a light filtering sheet, the light filtering support is fixedly connected to the prism base above the second prism, and the light filtering sheet is detachably connected to the light filtering support.

[0024] The beneficial effects of the scheme are that in the technical scheme, the light filtering sheet can selectively filter light of a specific wavelength, effectively eliminate stray light interference, and improve the color accuracy and clarity of the picture.

[0025] Further, the light sensing assembly comprises a light sensing chip and a mounting plate, the light sensing chip is fixedly connected to the mounting plate, and the mounting plate is fixedly connected to the light filtering support.

[0026] The beneficial effects of this solution are as follows: the image sensor can efficiently convert the light signals transmitted by the lens assembly, prism assembly, and filter assembly into electrical or digital signals, thus capturing image information. The fixed connection between the mounting plate and the filter bracket ensures stable installation of the image sensor, guaranteeing precise alignment with each optical component, ensuring the accuracy and stability of signal conversion, and thereby improving image quality and shooting results. Attached Figure Description

[0027] Figure 1 This is a 3D view of a periscope camera module according to the present invention;

[0028] Figure 2 This is an exploded view of a periscope camera module according to this utility model;

[0029] Figure 3 This is a three-dimensional view of the first screen printing layer of this utility model;

[0030] Figure 4 This is a three-dimensional view of the light-absorbing ink layer of this utility model. Detailed Implementation

[0031] The following detailed description illustrates the specific implementation method:

[0032] The reference numerals in the accompanying drawings include: prism base 1, fixing frame 2, Mylar plate 3, prism No. 1 4, prism No. 2 5, silkscreen layer No. 1 6, opening No. 1 7, light-absorbing ink layer 8, blank area No. 1 9, blank area No. 2 10, motor housing 11, motor bracket 12, lens assembly 13, filter bracket 14, filter 15, photosensitive chip 16, and mounting plate 17.

[0033] Example

[0034] like Figure 1 The periscope camera module shown includes a prism base 1 and a lens assembly 13.

[0035] like Figures 1-4As shown, the prism base 1 includes a fixed frame 2 and a Mylar plate 3, which is fixed to the bottom of the fixed frame 2 by adhesive. The prism base 1 is internally glued with a prism assembly. Specifically, the prism assembly includes a first prism 4 and a second prism 5, which are processed by laser cutting process from an integral prism. By cutting along a specific plane, the originally integrated prism becomes two independent and closely cooperating parts, and the first prism 4 is located on the left side of the second prism 5. The right side of the first prism 4 is silk-screen printed with a first silk-screen layer 6, which is provided with a sawtooth-shaped first opening 7; the right side of the first prism 4 and the left side of the second prism 5 are glued and fixed by optical adhesive on the contact surface. At the same time, the side surfaces of the first prism 4 and the second prism 5 are coated with a light-absorbing ink layer 8, and a first blank area 9 and a second blank area 10 are respectively reserved on the light-absorbing ink layer 8 on the left side of the first prism 4 and the right side of the second prism 5, which are not coated with ink. The first blank area 9 and the second blank area 10 are both silk-screen printed with a second silk-screen layer, which is provided with a sawtooth-shaped second opening, and the surface of the second silk-screen layer is further covered with a reflective film. The first silk-screen layer 6 and the second silk-screen layer have the same structure, and the light-absorbing ink layer 8, the first silk-screen layer 6 and the second silk-screen layer all adopt black ink. The thickness of the first silk-screen layer 6, the second silk-screen layer and the light-absorbing ink layer 8 is 0.01-0.015mm. In this embodiment, the thickness is specifically 0.01mm.

[0036] As shown in Figures 1-2 The top of the first prism 4 is provided with a motor assembly, which includes a motor housing 11, a motor bracket 12 and a motor. The motor housing 11 is glued on the top of the prism base 1, the motor bracket 12 is clamped in the motor housing 11, and the motor is installed on the motor bracket 12. A lens assembly 13 is installed in the motor bracket 12 and located above the prism assembly, and the focusing function can be realized by driving the lens assembly 13 by the motor.

[0037] As shown in Figures 1-2 The top of the second prism 5 is provided with a filter assembly, which includes a filter bracket 14 and a filter 15. The filter bracket 14 is glued on the top of the prism base 1, and the filter 15 is clamped on the filter bracket 14. The top of the filter assembly is provided with a photosensitive assembly, which includes a photosensitive chip 16 and a mounting plate 17. The photosensitive chip 16 is glued on the lower side of the mounting plate 17, and the mounting plate 17 is glued on the top of the filter bracket 14.

[0038] The specific implementation process is as follows:

[0039] When shooting, the external light is first introduced into the first prism 4 after being introduced into the lens assembly 13, then transmitted to the second prism 5 after being refracted, then reflected to the filter 15 by the second prism 5, and finally reaches the photosensitive chip 16 to complete the photoelectric conversion and realize image capture.

[0040] The above only is the embodiment of the present application, and the well-known specific technical solutions and / or common knowledge in the scheme are not described in detail. It should be pointed out that, for those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A periscope camera module, characterized in that: The prism base is internally fixedly connected with a first prism and a second prism, the side surface of the first prism close to the second prism is provided with a first silk screen layer, the first silk screen layer is provided with a first opening, and the first prism is fixedly connected with the second prism; the side surface of the first prism and the second prism is provided with a light-absorbing ink layer, and the light-absorbing ink layer of the left side surface of the first prism and the right side surface of the second prism is respectively reserved with a first blank area and a second blank area, the first blank area and the second blank area are provided with a second silk screen layer, the second silk screen layer is provided with a second opening; the top of the prism base of the first prism is fixedly connected with a motor assembly, the lens assembly is installed in the motor assembly, and the motor can drive the lens assembly to focus; the top of the prism base of the second prism is fixedly connected with a filter assembly, and the top of the filter assembly is fixedly connected with a photosensitive assembly. 2.The periscope camera module of claim 1, wherein: The thickness of the first silk screen layer, the second silk screen layer and the light-absorbing ink layer is 0.01-0.015mm. 3.The periscope camera module of claim 2, wherein: The first opening and the second opening are zigzag.

4. The periscope camera module according to claim 3, characterized in that: The light-absorbing ink layer, the first silk screen layer and the second silk screen layer all adopt black ink.

5. The periscope camera module according to claim 4, characterized in that: The surface of the second silk screen layer is covered with a reflective film. 6.The periscope camera module of claim 5, wherein: The prism base comprises a fixed frame, and the bottom of the fixed frame is fixedly connected with a Mylar plate.

7. The periscope camera module according to claim 6, characterized in that: The filter assembly comprises a filter support and a filter, the filter support is fixedly connected above the prism base of the second prism, and the filter is detachably connected with the filter support. 8.The periscope camera module according to claim 7, wherein: The photosensitive assembly comprises a photosensitive chip and a mounting plate, the photosensitive chip is fixedly connected with the mounting plate, and the mounting plate is fixedly connected with the filter support.

Images