WO2009033350A1

WO2009033350A1 - A far imaging module for a mobile phone

Info

Publication number: WO2009033350A1
Application number: PCT/CN2008/000397
Authority: WO
Inventors: Ping Xu
Original assignee: Huizhou Sunrise Digital Technol0Gy Co., Ltd
Priority date: 2007-09-14
Filing date: 2008-02-26
Publication date: 2009-03-19
Also published as: CN201096952Y

Abstract

A far imaging module used in a mobile phone is provided inside the mobile phone and includes: a lens base (l),a ens group (2), which comprises lens and mounted on the lens base (l),a light-sensitive chip (5),which responds to the light from the lens group (2) and transforms it into data information. The light-sensitive chip (5) is connected to a control circuit inside the mobile phone by a connecting circuit. The light from the exterior object passes through a light way changing element (3) and then irradiates onto the light-sensitive chip (5). The imaging module uses the lens group which can adjust the latter focus. The range of the focus is 25mm-160mm. The object in the distance from 1m to infinity can be imaged by adjusting an adjusting ring (4).

Description

Remote camera module for mobile phone

Technical field

The utility model relates to a camera device suitable for use in a mobile phone, in particular to a remote camera module for a mobile phone.

Background technique

With the popularity of mobile communication services, mobile phones have become an irreplaceable communication device. In addition to communication, the functions of mobile phones have gradually expanded, such as the addition of camera functions, video, audio playback functions. For the camera function, most mobile phones are implemented in the form of a built-in camera. Due to the limited size of the mobile phone, the built-in camera is difficult to configure more optical zoom systems, and the optical zoom is limited, so it is difficult to photograph long-distance scenes.

Utility model content

The technical problem to be solved by the present invention is to provide an imaging module for a mobile phone that can capture a distant view.

In order to solve the above technical problems, the utility model uses the following technical solutions:

A long-distance camera module for a mobile phone, which is built in a mobile phone, and includes a lens holder, a lens mounted in the lens holder, and a sensor chip that senses the light taken by the lens and converts it into data information, and the sensor chip passes through the interface circuit and the mobile phone. The internal control circuit is coupled, and the lens is a lens group composed of a lens, and the external scene light is reflected by a light steering component and then irradiated onto the photosensitive chip.

As an improvement to the above solution, the lens group described above is mounted in front of the light steering member, and each lens of the lens group is mounted on an adjustment ring, and the adjustment ring is movably connected to the lens holder through the thread. The lens group includes two convex lenses that are coaxially mounted in the adjustment ring.

As another modification to the above scheme, the above lens group is mounted between the light redirecting member and the photosensitive chip. At the same time, a convex lens sheet is disposed in front of the light steering member.

As a further improvement of the above solution, the light guiding member is a mirror or a triangular mirror, and the reflecting surface of the mirror or the triangular prism is at an angle of 45 degrees with respect to the optical axis of the lens group. The focal length of the lens group ranges from 25 mm to 160 mm.

The utility model has a simple structure, and a light-steering component is added to the optical system, and the light of the scene is added.

1

Confirmation The line is reflected by the steering component in the camera module and then irradiated onto the photosensitive chip, so that the entire camera module has a small lateral dimension, and the vertical dimension can be specifically determined according to the length of the mobile phone and the need to fit the lens group with adjustable focal length. The entire camera module uses a lens group with adjustable back focal length. The focal length of the lens group ranges from 25nmi to 160mm. By adjusting the adjustment ring, it can take pictures from lm to infinity, increasing the practical range of the built-in camera of the mobile phone.

DRAWINGS

1 is a schematic structural view of a first embodiment of the present invention; FIG. 2 is a schematic structural view of the second embodiment; FIG. 3 is a schematic structural view of the second embodiment after being installed in a mobile phone.

detailed description

In order to facilitate the understanding of those skilled in the art, the structural principle of the present invention will be further described in detail below with reference to the specific embodiments and the accompanying drawings:

Embodiment 1 As shown in FIG. 1 , the solution is installed in a mobile phone as a built-in camera module for a mobile phone, and mainly includes a lens holder 1 , a front lens 1 , a prism 3 , and a lens group 2 which are sequentially mounted in the lens holder 1 . , adjustment ring 4, sensor chip 5 and circuit board. The prism 3 is a light-steering component for reflecting the incident light and then imaging it on the photosensitive chip 5. The reflecting surface of the triangular mirror 3 is at an angle of 45 degrees to the optical axis of the lens group. The adjustment ring 4 is used to adjust the back focus of the lens group 2, so as to achieve clear imaging on the photosensitive chip 5 for different distance scenes. The photosensitive chip 5 is used for converting the real image of the scene into data information and transmitted to the internal circuit of the mobile phone through the interface circuit and displayed through the display screen. The control mode of the camera module and the control circuit are mature technologies. , will not repeat them here. The lens group 2 is composed of a concave lens 21 and a convex lens 22 mounted on the exit surface of the prism 3, and when adjusted, generally adjusts the distance between the convex lens 22 and the concave lens 21, thereby achieving the purpose of adjusting the back focal length.

The light of the external scene first enters the prism 3 through the lenticular sheet 6, and the light is reflected and enters the lens group 2, and is focused by the lens group 2, and imaged on the photosensitive chip 5.

By adjusting the adjustment ring 4, the focal length of the entire lens group 2 can be adjusted between 25 mm and 160 mm, so that a clear image of the scene on the photosensitive chip 5 can be realized from lm to infinity. The group 2 enters and is then reflected by the mirror 3 to be irradiated onto the photosensitive chip 5. The lens group 2 of the present embodiment is composed of two concentrically mounted convex lenses 23, the two convex lenses 23 are fixed in the adjusting ring 4, and the adjusting ring 4 is mounted in the lens mount 1 by threading movement, by rotating the adjusting ring 4, The distance between the lens group 2 and the mirror 3 can be adjusted to achieve a clear image on the photosensitive chip 5 from lm to infinity. The light reflecting member used in the present embodiment is a mirror, and other components such as the photosensitive chip 5 are mounted in the same manner as in the first embodiment, and will not be described in detail herein.

The entire camera module is small in size and is suitable for installation in a thin, mobile phone with a certain length.

Claims

Patent claim

1. A long-distance camera module for a mobile phone, which is built in a mobile phone, and includes a lens holder (1), a lens mounted in the lens holder, and a photosensitive chip (5) that senses the light taken by the lens and converts it into data information, and is photosensitive. The chip is connected to the internal control circuit of the mobile phone through the interface circuit, and is characterized in that: the lens is a lens group composed of a lens, and the external scene light is reflected by a light steering component (3) and then irradiated on the photosensitive chip.

2. The remote camera module for a mobile phone according to claim 1, wherein: the lens group is mounted in front of a light steering component, and each lens of the lens group is mounted on an adjustment ring (4), the adjustment ring Connected to the lens mount by thread.

3. The remote camera module for a mobile phone according to claim 2, wherein: the lens group comprises two convex lenses that are coaxially mounted in the adjustment ring.

4. The remote camera module for a mobile phone according to claim 1, wherein the lens group is mounted between the light redirecting member and the photosensitive chip.

5. The remote camera module for a mobile phone according to claim 4, wherein a convex lens sheet (6) is further disposed in front of the light redirecting member.

The remote camera module for mobile phone according to claim 3 or 5, wherein: the light turning component is a mirror or a triangular prism, and the reflecting surface of the mirror or the triangular prism is 45 degrees from the optical axis of the lens group. angle.

7. The remote camera module for a mobile phone according to claim 6, wherein: the lens group has a focal length ranging from 25 mni to 160 mm.