TWI440895B - Lens group and lens module - Google Patents

Description

Lens group and lens module

The present invention relates to an optical technology, and more particularly to a lens assembly and a lens module for use in an electronic product.

With the development of optical products, the application range of optical lenses is becoming wider and wider. Accordingly, the industry uses a variety of methods to fabricate optical lenses to accommodate the market's need for different sizes of optical lenses (see "Fabrication of Diffractive Optical Lens for Beam splitting Using LIGA Process", Mechatronics and Automation, Proceedings of the 4006 IEEE International Conference on , pp.1242-1247, 4006.06). Generally, after the optical lens is manufactured, it needs to be mounted in the lens barrel to form a lens module for use in electronic products such as a digital camera, a video camera, and a mobile phone with a camera function. Each lens is designed and matched according to the molding conditions, processing precision, assembly tolerance, and the like of each lens to make a corresponding fit between the lenses and the lens and the lens barrel.

However, it is difficult to ensure that each lens can meet the design requirements during the manufacturing process, so that the cooperation between the lenses is difficult to meet the requirements, thereby affecting the optical performance of the lens module.

In view of this, it is necessary to provide a good compatibility between the lenses and good optical properties. Good lens group and lens module.

A lens group includes a first lens, a second lens, and a connection portion connecting the first lens and the second lens, which are spaced apart in the optical axis direction of the lens group. The first lens and the second lens are integrally formed with the connecting portion.

A lens module includes a lens group and a lens barrel, and the lens group is housed in the lens barrel. The first lens, the second lens, and the connecting portion connecting the first lens and the second lens are disposed at intervals along the optical axis direction of the lens group. The first lens and the second lens are integrally formed with the connecting portion.

Compared with the prior art, the lens group is integrally formed with the connecting portion by at least two lenses, so that the cooperation between the at least two lenses is good. Therefore, the lens group having the lens group and the lens barrel are well matched, and the optical performance of the lens module is improved.

10, 20, 30, 40‧ ‧ lens group

12, 22, 32, 42‧‧‧ first lens

12a, 14a‧‧‧ outer surface

12b, 14b‧‧‧ inner surface

14, 24, 34, 44‧‧‧ second lens

16, 26, 38, 46‧‧‧ Connections

36‧‧‧ third lens

100‧‧‧ lens module

50‧‧‧Mirror tube

52‧‧‧ Main body

54‧‧‧ lens barrel front end

56‧‧‧Into the light hole

60‧‧‧ aperture film

80‧‧‧ spacer ring

90‧‧‧Filter

1 is a schematic cross-sectional view of a lens assembly according to a first embodiment of the present invention; FIG. 2 is a plan view of a lens assembly of FIG. 1; FIG. 3 is a schematic cross-sectional view of a lens assembly according to a second embodiment of the present invention; FIG. 5 is a schematic cross-sectional view of a lens module according to an embodiment of the present invention.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Please refer to FIG. 1 and FIG. 2 together, which is a lens group 10 according to a first embodiment of the present invention. The lens group 10 includes a first lens 12, which is spaced apart in the optical axis direction of the lens group 10, and The two lenses 14 and a connecting portion 16 connecting the first lens 12 and the second lens 14 are connected. The first lens 12 and the second lens 14 are integrally formed with the connecting portion 16 .

The first lens 12 includes an outer surface 12a and an inner surface 12b disposed opposite each other. The second lens 14 includes an outer surface 14a and an inner surface 14b disposed opposite each other. The outer surface 12a, the inner surface 12b, the inner surface 14b, and the outer surface 14a are sequentially disposed in the optical axis direction of the lens group 10.

The connecting portion 16 integrally connects the first lens 12 and the second lens 14 for supporting the first lens 12 and the second lens 14 and cooperating with other optical components or other receiving devices.

The material of the lens group 10 can be plastic, glass or the like. In the present embodiment, the material of the lens group 10 is plastic, so that the first lens 12, the second lens 14 and the connecting portion 16 are integrally formed.

The lens group 10 is integrally molded by the first lens 12, the second lens 14, and the connecting portion 16, so that the first lens 12 and the second lens 14 are well fitted.

Please refer to FIG. 3, which is a lens assembly 20 according to a second embodiment of the present invention. The lens group 20 has substantially the same structure as the lens group 10 of the first embodiment, except that the structure of the connecting portion is different. The lens group 20 includes a first lens 22, a second lens 24, and a connecting portion 26. The first lens 22 and the second lens 24 are sequentially disposed along the optical axis direction of the lens group 20. The connecting portion 26 connects one end of the first lens 22 and the second lens 24, and the connecting portion 26 is integrally formed with the first lens 22 and the second lens 24.

In the present embodiment, the first lens 22 and the second lens 24 have the same configuration as the first lens 12 and the second lens 14 of the first embodiment, respectively.

It can be understood that the lens group 20 can include any number of spaced apart connections for connecting the first lens 22 and the second lens 24, so that the lens group 20 can be combined with other optical components or Other storage devices can be used together.

Please refer to FIG. 4, which is a lens assembly 30 according to a third embodiment of the present invention. The lens group 30 has substantially the same structure as the lens group 10 of the first embodiment, except that the number of lenses is different. In the embodiment, the lens group 30 includes a first lens 32, a second lens 34, a third lens 36, and a connecting portion 38. The first lens 32, the third lens 36, and the second lens 34 are sequentially disposed in the optical axis direction of the lens group 30. The connecting portion 38 is integrally formed with the first lens 32, the third lens 36, and the second lens 34.

In the present embodiment, the first lens 32 and the second lens 34 have the same configuration as the first lens 12 and the second lens 14 of the first embodiment, respectively. The connection portion 38 is basically the same in structure as the connection portion 16 of the first embodiment.

It can be understood that the lens group 30 can include any connecting portion that is spaced apart and used to connect the first lens 32, the second lens 34, and the third lens 36, so that the lens group 30 can be matched with other optical components or other receiving devices. .

The lens group 30 is integrally molded by the first lens 32, the second lens 34, the third lens 36, and the connecting portion 38, so that the first lens 32, the second lens 34, and the third lens 36 are well fitted.

Please refer to FIG. 5 , which is a lens module 100 according to an embodiment of the present invention. The lens module 100 includes a lens group 40, a lens barrel 50, a diaphragm sheet 60, a spacer ring 80 and a filter 90. The lens group 40 is housed in the lens barrel 50.

In the present embodiment, the structure of the lens group 40 is substantially the same as that of the lens group 10 of the first embodiment. The lens group 40 includes a first lens 42, a second lens 44, and a connecting portion 46. The first lens 42, the second lens 44, and the connecting portion 46 are integrally formed.

The lens barrel 50 includes a main body portion 52 and a barrel front end 54. The barrel front end 54 is located at the light incident end of the main body portion 52. In the present embodiment, the barrel front end 54 is integrally formed with the main body portion 52. The front end 54 of the lens barrel is further provided with a funnel-shaped light-incident hole 56 having a diameter gradually varying along the front end 54 of the lens barrel.

The main body portion 52 is for housing the lens group 40, the diaphragm sheet 60, the spacer ring 80, and the filter 90. In the present embodiment, the shape of the main body portion 52 is a cylindrical shape.

The aperture piece 60 is disposed in a space formed by the connection portion 46 and the first lens 42 and the second lens 44, respectively. The end of the aperture sheet 60 is formed with a chamfer so that the aperture sheet 60 is mounted. In the present embodiment, the shape of the aperture sheet 60 is similar to the shape of a truncated cone.

The filter 90 is located at the other end opposite to the front end 54 of the barrel. The filter 90 may be an infrared cut filter or an ultraviolet cut filter. The material of the filter 90 can be glass or resin.

The spacer ring 80 is located between the filter 90 and the connection portion 46 of the lens group 40. The spacer ring 80 is used to separate the filter 90 from the lens group 40 to prevent the filter 90 from coming into contact with or colliding with the lens group 40 to cause damage. In the present embodiment, the spacer ring 80 has a ring shape.

It can be understood that the lens group 40 disposed in the lens module 100 can also be the lens group 20 of the second embodiment or the lens group 30 of the third embodiment.

The lens module 100 utilizes an integrally formed lens group to ensure a good fit between the lens group and the lens barrel 50 while ensuring good optical performance of the lens module 100.

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. Anyone familiar with the skill of the case is dependent on the present invention. Equivalent modifications or variations made by the spirit are to be covered by the following patents.

10‧‧‧ lens group

12‧‧‧ first lens

12a, 14a‧‧‧ outer surface

12b, 14b‧‧‧ inner surface

14‧‧‧second lens

16‧‧‧Connecting Department

Claims (9)

A lens group including a first lens and a second lens spaced apart at least in an optical axis direction of the lens group, wherein the lens group further includes a connection portion connecting the first lens and the second lens, The first lens and the second lens are integrally formed with the connecting portion. The lens group according to claim 1, wherein the lens group is made of plastic or glass. The lens group according to claim 1, wherein the lens group further includes a third lens, the connecting portion connecting the first lens, the second lens and the third lens, the first lens, The second lens and the third lens are integrally formed with the connecting portion. The lens group of claim 1, wherein the first lens, the second lens and the third lens respectively comprise an outer surface and an inner surface, the outer surface and the inner surface along the light thereof The axis directions are set relative to each other. A lens module comprising a lens group according to claim 1 and a lens barrel, wherein the lens group is housed in the lens barrel. The lens module of claim 5, wherein the lens barrel comprises a main body portion and a lens barrel front end, the front end of the lens barrel is located at a light incident end of the main body portion, and the lens group is received In the main body of the lens barrel. The lens module of claim 6, wherein the lens module further comprises at least one aperture plate, and the at least one aperture plate is disposed in a space formed by the connecting portion and the lens. The lens module of claim 6, wherein the lens barrel further comprises a filter, the filter being located at the other end opposite to the front end of the lens barrel. The lens module of claim 8, wherein the lens barrel further comprises a spacer ring The spacer ring is located between the filter and the lens group.