CN102955181A

CN102955181A - Lens and camera module with same

Info

Publication number: CN102955181A
Application number: CN2011102396669A
Authority: CN
Inventors: 李俊佑
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2011-08-19
Filing date: 2011-08-19
Publication date: 2013-03-06

Abstract

A camera module comprises a lens, a substrate and an image sensor, wherein the substrate is fixedly matched with the lens, and the image sensor is fixedly arranged on the substrate. The lens comprises a lens cone and a lens body arranged in the lens cone. The lens body comprises an optical portion and a non-optical portion surrounding the optical portion. The optical portion is used for allowing light to permeate so as to realize optical imaging. The lens body is provided with an optical axis, and the orthographic projection of the optical portion along the optical axis is a quadrangle comprising two parallel long edges and two short edges connected between the two long edges. The substrate is provided with a first surface, a second surface and a through hole penetrating through the first surface and the second surface. The image sensor is provided with a rectangular effective light sensing area, the substrate is arranged between the lens and the image sensor, and the effective light sensing area is arranged in the through hole. The length-width ratio of the orthographic projection of the optical portion along the optical axis is equal to that of the effective light sensing area. The long edges of the orthographic projection of the optical portion along the optical axis are parallel to the long edges of the effective light sensing area.

Description

Eyeglass and have the camera module of this eyeglass

Technical field

The present invention relates to the optical image technology field, relate in particular to a kind of eyeglass and have the camera module of this eyeglass.

Background technology

The camera module comprises lens barrel, is arranged on the lens set in the lens barrel, substrate and be arranged on the image sensor of substrate.Offer on the substrate and run through the up and down through hole on two surfaces.Thereby through hole allows light by arriving at the image sensor imaging.

In traditional camera module, because eyeglass generally is circular along the orthogonal projection of optical axis, the areas imaging of lens set generally also is circular, and effective photosensitive area of image sensor is generally rectangle, and effectively photosensitive area is positioned at areas imaging.The outer light of effective photosensitive area is unnecessary for imaging in the areas imaging, and this part light may be reflexed to by the inwall of through hole effective photosensitive area of image sensor, thereby produces serious reflected light line in the image of imaging.

Summary of the invention

In view of this, be necessary to provide a kind of and can reduce eyeglass and the camera module that produces the reflected light line.

A kind of eyeglass, it comprises optics section and around the non-optical division of this optics section.This optics section is used for allowing light penetration to realize optical imagery.This eyeglass has an optical axis.This optics section is quadrilateral along the orthogonal projection of this optical axis, and this quadrilateral comprises two parallel long limits and is connected to two minor faces between two long limits.

A kind of camera module, it comprises camera lens, with the substrate of this camera lens secure fit, is installed in the image sensor on this substrate.This camera lens comprises lens barrel and is arranged on the interior eyeglass of this lens barrel.This eyeglass comprises optics section and around the non-optical division of this optics section.This optics section is used for allowing light penetration to realize optical imagery.This eyeglass has an optical axis.This optics section is quadrilateral along the orthogonal projection of this optical axis, and this quadrilateral comprises two parallel long limits and is connected to two minor faces between two long limits.This substrate has relative first surface and second surface, and runs through the through hole of this first surface and this second surface.This image sensor has a rectangular effective photosensitive area, and this substrate is between this camera lens and this image sensor, and this effective photosensitive area is positioned at this through hole.This optics section equals the length breadth ratio of this effective photosensitive area along the length breadth ratio of the orthogonal projection of this optical axis.This optics section is parallel with the long limit of this effective photosensitive area along the long limit of the orthogonal projection of this optical axis.

In the camera module provided by the invention, because the length breadth ratio of the orthogonal projection of this optics section equals the length breadth ratio of this effective photosensitive area, and this optics section is parallel with the long limit of this effective photosensitive area along the long limit of the orthogonal projection of this optical axis, can reduce the outer light of effective photosensitive area in the areas imaging, therefore can reduce the light that arrives through-hole wall, thereby be projected to the light of described effective photosensitive area after reducing the reflection of via through holes inwall, and then be reduced to the reflected light line in the image of picture.

Description of drawings

Fig. 1 is the schematic perspective view of the eyeglass of first embodiment of the invention.

Fig. 2 is the vertical view of the eyeglass among Fig. 1.

Fig. 3 is the diagrammatic cross-section of camera module that comprises the eyeglass of Fig. 1.

Fig. 4 is in the camera module of Fig. 1, the position relationship schematic diagram of effective photosensitive area of image sensor and the areas imaging of camera lens.

The main element symbol description

The camera module	10
		Lens barrel	11
Eyeglass	12
		Anti-dazzling screen	13
Camera lens	15
		Substrate	16
Image sensor	18
		Optics section	121
The non-optical division	122
		Optical axis	123
Long limit	1211，1511，1821
		The arc minor face	1212
Light hole	131
		First surface	161
Second surface	162
		The first groove	163
Groove	164
		Through hole	165
Light-sensitive surface	181
		Effective photosensitive area	182
Areas imaging	151

Following embodiment further specifies the present invention in connection with above-mentioned accompanying drawing.

Embodiment

Below in conjunction with drawings and the embodiments the present invention is described in further detail.

See also Fig. 1-2, the eyeglass 12 of first embodiment of the invention comprises the non-optical division 122 that optics section 121 reaches around optics section 121.This optics section 121 is used for allowing light penetration to realize optical imagery.In present embodiment, eyeglass 12 integral body are circular.Be appreciated that eyeglass 12 integral body also can be other shapes such as rectangle.Eyeglass 12 has an optical axis 123.Optics section 121 is quadrilateral along the orthogonal projection of optical axis 123, and this quadrilateral comprises two long limits 1211 that are parallel to each other and the arc minor face 1212 that is connected to two long limits 1211.The length on long limit 1211 is L, and the distance between two long limits 1211 is S.In present embodiment, the surface of optics section 121 is sphere.Be appreciated that in other embodiments, the surface of optics section 121 also can be aspheric surface.The material of eyeglass 12 can be plastics or glass etc.

Be appreciated that in other embodiments, optics section 121 also can be the rectangle of rule along the orthogonal projection of optical axis 123, and namely two arc minor faces 1212 are respectively the minor face vertical with long limit.

See also Fig. 3, the camera module 10 of second embodiment of the invention comprises lens barrel 11, eyeglass 12, anti-dazzling screen 13, substrate 16, and image sensor 18.

Eyeglass 12 and anti-dazzling screen 13 are housed in the lens barrel 11, and anti-dazzling screen 13 is attached on the eyeglass 12.Anti-dazzling screen 13 inside offer the be roughly rectangular light hole 131 corresponding with optics section 121, and anti-dazzling screen 13 is used for stoping light to pass from the non-optical division 122 of eyeglass 12.Lens barrel 11, eyeglass 12 and anti-dazzling screen form camera lens 15 jointly.

Substrate 16 has relative first surface 161 and second surface 162.First surface offers through hole 165, offers groove 164 on the second surface 162, and groove 164 is communicated with through hole 165.The first surface 161 of substrate 16 can stick on by modes such as glue the lower surface of lens barrel 11.In the present embodiment, substrate 16 is ceramic substrate.

Image sensor 18 is fixed in the groove 164 by modes such as glue, and effective photosensitive area 182 of image sensor 18 is positioned at the through hole 165 of substrate 16.In the present embodiment, effectively photosensitive area 182 is rectangle, as shown in Figure 4.The ratio of L and S equals the length breadth ratio of effective photosensitive area 182 in the eyeglass 12.This optics section 121 is parallel with the long limit 1821 of this effective photosensitive area 182 along the long limit 1211 of the orthogonal projection of this optical axis 123.

Because the optics section 121 of eyeglass 12 is roughly rectangle, the areas imaging 151 of camera lens 15 also is rectangular basically.The long limit 1511 of the areas imaging 151 of this camera lens 15 is parallel with the long limit 1821 of this effective photosensitive area 182.The areas imaging 151 of camera lens 15 covers effective photosensitive area 182, and more bigger than effective photosensitive area 182.Be appreciated that in other embodiments, the border of areas imaging 151 can just overlap with the border of effective photosensitive area 182.

In addition, those skilled in the art can also do other variation in spirit of the present invention, and certainly, the variation that these are done according to spirit of the present invention all should be included within the present invention's scope required for protection.

Claims

1. eyeglass, it comprises optics section and around the non-optical division of this optics section, this optics section is used for allowing light penetration to realize optical imagery, this eyeglass has an optical axis, it is characterized in that, this optics section is quadrilateral along the orthogonal projection of this optical axis, and this quadrilateral comprises two parallel long limits and is connected to two minor faces between two long limits.

2. eyeglass as claimed in claim 1 is characterized in that, these two minor faces are arc-shaped side.

3. eyeglass as claimed in claim 1 is characterized in that, this quadrilateral is regular rectangle.

4. eyeglass as claimed in claim 1 is characterized in that, the surface of this optics section is sphere.

5. a camera module is characterized in that, it comprises:

Camera lens, this camera lens comprises lens barrel and is arranged on the interior eyeglass of this lens barrel, this eyeglass comprises optics section and around the non-optical division of this optics section, this optics section is used for allowing light penetration to realize optical imagery, this eyeglass has an optical axis, this optics section is quadrilateral along the orthogonal projection of this optical axis, and this quadrilateral comprises two parallel long limits and is connected to two minor faces between two long limits;

With the substrate of this camera lens secure fit, this substrate has relative first surface and second surface, and runs through the through hole of this first surface and this second surface; And

Be installed in the image sensor on this substrate, this image sensor has a rectangular effective photosensitive area, this substrate is between this camera lens and this image sensor, and this effective photosensitive area is positioned at this through hole, this optics section equals the length breadth ratio of this effective photosensitive area along the length breadth ratio of the orthogonal projection of this optical axis, this optics section is parallel with the long limit of this effective photosensitive area along the long limit of the orthogonal projection of this optical axis.

6. camera module as claimed in claim 5 is characterized in that, the areas imaging of this camera lens is rectangle, and the long limit of the areas imaging of this camera lens is parallel with the long limit of this effective photosensitive area.

7. camera module as claimed in claim 6 is characterized in that, this effective photosensitive area is positioned within the areas imaging of this camera lens.

8. camera module as claimed in claim 5 is characterized in that, this optics section comprises two long limits that are parallel to each other and is connected to arc minor face between these two long limits along the orthogonal projection of this optical axis.

9. camera module as claimed in claim 5 is characterized in that, this second surface offers groove, and this groove and this through hole connect, and this image sensor is arranged in this groove.

10. camera module as claimed in claim 5 is characterized in that, this substrate is ceramic substrate.