CN205067775U

CN205067775U - Electronic equipment and camera module thereof

Info

Publication number: CN205067775U
Application number: CN201520738115.0U
Authority: CN
Inventors: 林霄; 洪军可
Original assignee: Zhejiang Crystal Optech Co Ltd
Current assignee: Zhejiang Crystal Optech Co Ltd
Priority date: 2015-09-22
Filing date: 2015-09-22
Publication date: 2016-03-02
Anticipated expiration: 2025-09-22

Abstract

The utility model discloses a camera module, include: at least one lens, be located the lens emitting direction and with lens parallel arrangement's sensor chip, set up in the lens with light filter between the sensor chip, the light filter orientation the surface and the orientation of lens sensor chip's surface all sets up at least one deck AR membrane. Because the utility model discloses change the IR membrane in the light filter among the prior art into the AR membrane, obtain the light filter that the two sides all set up the AR membrane, because the AR membrane is antireflection coating or reflection reducing coating, can reduce or eliminate the reverberation, increase optical element printing opacity volume, consequently eliminated between lens and the light filter and the light beam between sensor chip and the light filter, avoided the appearance of glare ghost. The utility model also discloses electronic equipment.

Description

A kind of electronic equipment and camera module thereof

Technical field

The utility model relates to camera technical field, more particularly, relates to a kind of electronic equipment and camera module thereof.

Background technology

Camera module is primarily of cover glass (Coverglass), eyeglass (lens), and optical filter (IRCF) and chip (sensor) form.Under normal circumstances, as shown in Figure 1, lens is in the superiors, IRCF is in module centre position, sensor is in orlop, and coating film treatment is all carried out in the two sides of IRCF, and the two sides of IRCF plates antireflective film (AR film) and infrared cut coating (IR film) respectively, as for side plating antireflective film (AR film) or infrared cut coating (IR film), do not limit.Coverglass is coated with AR film towards the one side of lens.Because AR film reflectivity is lower, IR film reflectivity is higher, and define between lens and IRCF between reflection ray or IRCF and sensor and form multiple reflections, finally cause dazzle ghost (flare) phenomenon, namely, in imaging optical system, the existence of one or more picture similar to picture point near picture point, is had.Along with camera module is more and more thinner, it is more and more serious that module internal device reflects the flare problem caused.

Following two kinds of solutions are mainly contained at present: one is the cutoff wavelength changing IR film for flare problem; Two is the distances as far as possible increased between IRCF and sensor and IRCF and lens, energy after diminished reflex, existing mode solves this type of flare and improves very limited, reason is that the attribute of the cutoff function of IR film on the one hand itself cannot change, no matter always be that any IR film exists high reflectance at some wave band; On the other hand, current camera module is more and more thinner, and the space leaving IRCF adjustment for is extremely limited.

In sum, how namely the dazzle ghost problem in camera module that how effectively to solve eliminate the reflection ray between lens and IRCF and/or between IRCF and sensor, is current those skilled in the art's urgent problem.

Utility model content

For solving the problems of the technologies described above, the utility model provides a kind of camera module, effectively can eliminate the reflection ray between lens and IRCF and/or between IRCF and sensor, solves dazzle ghost problem.

For achieving the above object, the utility model provides following technical scheme:

A kind of camera module, comprising:

At least one eyeglass;

Be positioned at described eyeglass exit direction and the sensor chip that arrange corresponding to described eyeglass;

Correspondence is arranged at the optical filter between described eyeglass and described sensor chip, and the surface of described optical filter towards described eyeglass and the surface towards described sensor chip all arrange at least one deck AR film.

Preferably, in above-mentioned camera module, also comprise the cover glass being arranged at described eyeglass incident direction, described cover glass arranges at least one deck IR film towards the surface of described eyeglass.

Preferably, in above-mentioned camera module, also comprise the cover glass being arranged at described eyeglass incident direction and the filter glass be arranged between described cover glass and described eyeglass, the surface of described filter glass arranges at least one deck IR film.

Preferably, in above-mentioned camera module, described IR film is alternately superpose with high-index material the IR film formed by low-index material.

Preferably, in above-mentioned camera module, the transparency range of described IR film is 420nm-650nm.

The utility model additionally provides a kind of electronic equipment, comprises the camera module described in above-mentioned any one.

As can be seen from technique scheme, a kind of camera module provided by the utility model, comprising: at least one eyeglass; Be positioned at described eyeglass exit direction and the sensor chip be arranged in parallel with described eyeglass; Be arranged at the optical filter between described eyeglass and described sensor chip, the surface of described optical filter towards described eyeglass and the surface towards described sensor chip all arrange at least one deck AR film.Because the utility model changes the IR film in optical filter in prior art into AR film, obtain the optical filter that two sides all arranges AR film, because AR film is antireflecting film or anti-reflection film, reflected light can be reduced or eliminated, increase optical element light transmission capacity, because this eliminating the reflection ray between eyeglass and optical filter and between sensor chip and optical filter, avoid the appearance of dazzle ghost.

In a preferred embodiment; in the cover glass of eyeglass incident direction; described cover glass arranges at least one deck IR film towards the surface of described eyeglass; due to IR film and eyeglass distant; energy when reflection ray between IR film and eyeglass arrives sensor chip is less, reduces dazzle ghost phenomenon.

In another preferred embodiment, between cover glass and eyeglass, arrange the filter glass with at least one deck IR film, principle is identical with above-mentioned preferred implementation, and just set-up mode is different.Due to IR film and eyeglass distant, the energy when reflection ray between IR film and eyeglass arrives sensor chip is less, reduces dazzle ghost phenomenon.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.

A kind of camera module schematic diagram that Fig. 1 provides for prior art;

A kind of camera module schematic diagram that Fig. 2 provides for the utility model embodiment.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1 and Fig. 2, a kind of camera module schematic diagram that Fig. 1 provides for prior art, a kind of camera module schematic diagram that Fig. 2 provides for the utility model embodiment.

In a kind of embodiment, provide a kind of camera module, comprising: at least one eyeglass 102; Be positioned at described eyeglass 102 exit direction and the sensor chip 104 that arrange corresponding to described eyeglass 102; Correspondence is arranged at the optical filter 103 between described eyeglass 102 and described sensor chip 104, and described optical filter 103 is towards the surface of described eyeglass 102 and all arrange at least one deck AR film 201 towards the surface of described sensor chip 104.

Concrete, eyeglass 102, optical filter 103 and sensor chip 104 are arranged in parallel, and the surface of three faces setting all mutually, to ensure that light can arrive sensor chip 104 by eyeglass 102 and optical filter 103.Incident ray is injected from the side of eyeglass 102, the one side of the eyeglass 102 of incident ray incidence is incident direction, the one side of incident ray after eyeglass 102 after outgoing is exit direction, multiple eyeglass 102 can form lens group, two equal evaporations in surface of optical filter 103 have AR film 201, and process can be vacuum evaporation, sol-gelatin plating etc., because AR film 201 is antireflecting film or anti-reflection film, can reflected light be reduced or eliminated, increase element light transmission capacity.Multilayer AR film 201 has better performance than individual layer AR film 201, and light penetration is higher, reflects more thorough.Because this eliminating the reflection ray between eyeglass 102 and optical filter 103 and between sensor chip 104 and optical filter 103, avoid the appearance of dazzle ghost.

It is pointed out that, if carry out dust-proof work, the optical filter 103 in camera module can remove, removing optical filter 103 would not exist reflex, finally avoids dazzle ghost.

Further, in above-mentioned camera module, also comprise the cover glass 101 being arranged at described eyeglass 102 incident direction, described cover glass 101 arranges at least one deck IR film 202 towards the surface of described eyeglass 102.IR film 202 i.e. cutoff filter, IR film 202 function mainly ends Infrared, through luminous ray, transparency range is 420nm-650nm, because human eye is different from the response of sensor chip 104 to each wavelength, human eye can't see infrared light but sensor chip 104 can sense, therefore needs IR film 202 to hinder infrared light to pass through.

In another preferred implementation; with above-described embodiment unlike; the setting position of IR film 202 is different; IR film 202 is arranged at the surface of cover glass 101 by a upper embodiment; and this embodiment comprises the cover glass 101 being arranged at described eyeglass 102 incident direction and the filter glass be arranged between described cover glass 101 and described eyeglass 102, the surface of described filter glass arranges at least one deck IR film.Its effect is identical with the effect of IR film in above-described embodiment, does not repeat them here.

It is pointed out that IR film 202 is arranged at cover glass 101 surface and is still arranged between cover glass 101 and eyeglass 102, determine according to actual conditions, all within protection domain.

Further, IR film is alternately superpose with high-index material the IR film formed by low-index material.In prior art; the maximum incident angle about 30 ° on IR film 202 surface is incident to when IR film 202 is on optical filter 103; IR film 202 is arranged at cover glass 101 surface by present embodiment; because the incident angle being incident to the incident ray on IR film 202 surface is determined by the field angle of module; therefore; the light angle inciding IR film 202 becomes large; general at about 40 °; general incident angle is larger; the curve offset of IR film 202 is larger; in order to not affect imaging effect, by controlling the thickness of rete and the offset of number of plies control IR film 202.

Because the utility model changes the IR film 202 of optical filter in prior art 103 into AR film 201, obtain the optical filter 103 that two sides all arranges AR film 201, because AR film 201 is antireflecting film or anti-reflection film, reflected light can be reduced or eliminated, increase optical element light transmission capacity, because this eliminating the reflection ray between eyeglass 102 and optical filter 103, avoid the appearance of dazzle ghost.

The utility model additionally provides a kind of electronic equipment, comprises the camera module described in above-mentioned any one, effectively can avoid the appearance of dazzle ghost.

In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims

1. a camera module, is characterized in that, comprising:

At least one eyeglass;

2. camera module as claimed in claim 1, it is characterized in that, also comprise the cover glass being arranged at described eyeglass incident direction, described cover glass arranges at least one deck IR film towards the surface of described eyeglass.

3. camera module as claimed in claim 1; it is characterized in that; also comprise the cover glass being arranged at described eyeglass incident direction and the filter glass be arranged between described cover glass and described eyeglass, the surface of described filter glass arranges at least one deck IR film.

4. the camera module as described in any one of Claims 2 or 3, is characterized in that, described IR film is alternately superpose with high-index material the IR film formed by low-index material.

5. camera module as claimed in claim 4, it is characterized in that, the transparency range of described IR film is 420nm-650nm.

6. an electronic equipment, is characterized in that, comprises the camera module as described in any one of claim 1 to 5.