TWI440915B - Lens module and camera module using same - Google Patents

Description

Lens module and camera module for its application

The invention relates to a lens module and a camera module thereof.

At present, the lens module generally uses a glass lens or a plastic lens having a predetermined curvature as a lens for changing the optical path. Glass lens manufacturing processes are complex, including cutting, grinding and other processes. Plastic lenses are generally manufactured by precision injection molding methods, and the required molds are expensive to manufacture.

In view of this, it is necessary to provide a lens module that is easy to manufacture and low in cost.

A lens module includes a lens barrel and at least one lens. The diameter of the lens is larger than the inner diameter of the barrel. The lens is bent in the central axis direction of the lens barrel and fixed in the lens barrel, and the center of the lens is located on the central axis of the lens barrel.

A camera module includes a substrate, a lens holder fixed on the substrate, an image sensing chip fixed on the substrate and located in the lens holder, and a lens sensing unit fixed on the lens holder Lens module. The lens module includes a lens barrel and at least one lens. The diameter of the lens is larger than the inner diameter of the barrel. The lens is bent in the central axis direction of the lens barrel and fixed in the lens barrel, and the center of the lens is located on the central axis of the lens barrel.

Compared with the prior art, the lens module and the camera module thereof are applied by The lens having a diameter larger than the inner diameter of the lens barrel is bent in the direction of the central axis of the lens barrel and fixed in the lens barrel to bend the lens into a lens having a predetermined curvature, thereby forming a lens which is simple in structure, easy to manufacture, and low in cost. Module.

1,3‧‧‧ lens module

10,30‧‧‧Mirror tube

101, 3022‧‧‧ end

102, 3021‧‧‧ inner wall

103‧‧‧through hole

104‧‧‧ Groove

12,14,16,32,34,36‧‧‧ lenses

302‧‧‧Part 1

3023‧‧‧Clamping structure

3024‧‧‧Semi-circular hole

304‧‧‧Part II

5‧‧‧ camera module

52‧‧‧Mirror base

54‧‧‧Substrate

56‧‧‧Image sensing chip

58‧‧‧ accommodating space

FIG. 1 is a schematic diagram of a lens module according to a first embodiment of the present invention.

2 is an exploded view of the lens module of FIG. 1.

3 is a schematic view of the interior of the lens barrel of the lens module of FIG. 1.

4 is an exploded view of a lens module according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of a camera module applying the lens module of FIG. 1. FIG.

The following preferred embodiments will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 to FIG. 3 , a lens module 1 according to a first embodiment of the present invention includes a lens barrel 10 and at least one lens. In the present embodiment, the lens module 1 includes three lenses 12, 14, 16.

The lens barrel 10 is a hollow cylinder having an end portion 101 and an inner wall 102. A circular through hole 103 is defined in the end portion 101 for allowing external light to enter the lens barrel 10 through the through hole 103. The center of the through hole 103 is located on the central axis of the lens barrel 10. The inner wall 102 of the lens barrel 10 is provided with three recesses 104 which are spaced around the inner wall 102 and are spaced apart from each other.

The three lenses 12, 14, 16 are light-transmissive and elastically bendable circular lenses each having a diameter larger than the inner diameter of the lens barrel 10. Radius of the three lenses 12, 14, 16 Can be different. Preferably, the three lenses 12, 14, 16 are made of a light transmissive plastic having better elasticity. After the three lenses 12, 14, 16 are bent in the central axis direction of the lens barrel 10, the edges thereof are respectively engaged with the three grooves 104 of the inner wall 102 of the lens barrel 10, thereby being fixed at Inside the lens barrel 10. The centers of the three lenses 12, 14, 16 are located on the central axis of the barrel. Since the diameters of the three lenses 12, 14, 16 are larger than the inner diameter of the lens barrel 10, the three lenses 12, 14, 16 are bent in the lens barrel 10 into lenses having a predetermined curvature for Change the path of the incident light.

When the lens module 1 is assembled, the lens 12 can be bent into a shape by a clamping device (not shown), and the convex surface of the lens 12 is adsorbed by a suction device (not shown) to make the lens. 12 is maintained in a curved shape, and then the lens 12 is placed in the lens barrel 10 through the suction device to the corresponding groove 104, and the suction device is taken out, so that the lens 12 is engaged under the elastic action of the lens 12 Inside the groove 104. The other two lenses 14, 16 are then assembled in sequence.

Referring to FIG. 4 , the lens module 3 provided by the second embodiment of the present invention is different from the lens module 1 provided by the first embodiment in that the lens barrel 30 includes a first portion 302 and a The first portion 302 corresponds to the second portion 304. Preferably, the first portion 302 and the second portion 304 are symmetrical with respect to a central axis of the lens barrel 30. The first portion 302 is a half cylinder that includes an inner wall 3021 and an end portion 3022. The inner wall 3021 is provided with three sets of engaging structures 3023 spaced apart from each other and surrounding the inner wall 3021 for respectively fixing the three lenses 32, 34, 36. The end portion 3022 is provided with a semi-circular hole 3024 for allowing external light to enter the lens barrel 30. The center of the semicircular hole 3024 is located on the central axis of the barrel 30. The second portion 304 and the first portion 302 are butted and fixedly connected at their ends to The lens barrel 30 is formed. The second portion 304 and the first portion 302 can be joined together by gluing.

When the lens module 3 is assembled, the three lenses 32, 34, 36 may be bent into a shape by a clamping device (not shown) and engaged with the first portion 302 of the lens barrel 30. Corresponding to the engaging structure 3023, the second portion 304 of the lens barrel 30 is then fixed on the first portion 302, and the clamping device is removed to fix the lenses 32, 34, 36 Inside the barrel 30.

It can be understood that the number of the lenses included in the lens module depends on the optical design requirements, and the number of the grooves or the engaging structures in the lens barrel also changes accordingly, and is not limited to the embodiment of the present invention. number.

FIG. 5 shows a camera module 5 of the lens module 1 , which includes a lens module 1 , a lens holder 52 , a substrate 54 and an image sensing wafer 56 .

The lens holder 52 is fixed on the substrate 54 and forms an accommodating space 58.

The image sensing wafer 56 is fixed on the substrate 54 and located in the receiving space 58 of the lens holder 52. The image sensing wafer 56 is electrically connected to an external circuit (not shown) through the substrate 54.

The lens module 1 is fixed to the lens holder 52 for collecting incident light onto the image sensing wafer 56.

Compared with the prior art, the lens module and the camera module thereof are applied to the lens barrel by bending a lens having a diameter larger than the inner diameter of the lens barrel in the direction of the central axis of the lens barrel, thereby bending the lens. A lens having a predetermined curvature forms a lens module that is simple in structure, easy to manufacture, and low in cost.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

1‧‧‧ lens module

10‧‧‧Mirror tube

101‧‧‧End

103‧‧‧through hole

12,14,16‧‧‧ lenses

Claims (6)

A lens module includes a lens barrel and at least one lens, wherein the lens is an elastically bendable circular lens and has a diameter larger than an inner diameter of the lens barrel, and the lens is along the lens barrel The central axis direction is bent into a lens having a predetermined curvature and then fixed in the lens barrel by its own elasticity, and the center of the lens is located on the central axis of the lens barrel. The lens module of claim 1, wherein the lens barrel includes an inner wall, and the inner wall is provided with at least one groove surrounding the inner wall, and an edge of the lens is engaged with the Inside the groove. The lens module of claim 1, wherein the lens barrel includes a first portion and a second portion, the first portion and the second portion each including an inner wall, and the inner wall correspondingly At least one set of engaging structures surrounding the inner wall is disposed, and edges of the lenses are respectively engaged in the engaging structures of the first portion and the second portion. The lens module of claim 3, wherein the first portion and the second portion of the lens barrel are symmetrical with respect to a central axis of the lens barrel. The lens module of claim 4, wherein the lens is made of a light transmissive plastic having elasticity. A camera module includes a substrate, a lens holder fixed on the substrate, an image sensing chip fixed on the substrate and located in the lens holder, and a lens sensing unit fixed on the lens holder a lens module, wherein the lens module comprises a lens barrel and at least one lens, wherein the lens is an elastically bendable circular lens and has a diameter larger than an inner diameter of the lens barrel, The central axis of the lens barrel is bent into a lens having a predetermined curvature and then fixed in the lens barrel by its own elasticity, and the center of the lens is located on the central axis of the lens barrel.