CN220817519U

CN220817519U - Lens module

Info

Publication number: CN220817519U
Application number: CN202322499556.7U
Authority: CN
Inventors: 陈信良; 沈俊明; 胡圣文
Original assignee: Qisda Optronics Suzhou Co Ltd; Qisda Corp
Current assignee: Qisda Optronics Suzhou Co Ltd; Qisda Corp
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-04-19
Anticipated expiration: 2033-09-14

Abstract

The utility model provides a lens module, which comprises an integrated lens seat and a lens group. The lens holder is composed of a fixing piece and a lens holder, wherein the lens holder is connected with the fixing piece and comprises a containing cavity and a bearing surface positioned in the containing cavity. The lens group is arranged in the accommodating cavity and is supported against the bearing surface so as to ensure that no relative displacement is generated between the lens group and the lens holder. Because the lens group is an integrated structure, the number of components is reduced, and no relative displacement is generated between the fixing piece and the lens holder. Therefore, the relative position of the split lens barrel and the base or the heat dissipation substrate in the prior art can be prevented from being offset in the assembling process, so that the alignment quality is prevented from being influenced.

Description

Lens module

Technical Field

The present utility model relates to an optical device, and more particularly, to a lens module.

Background

In order to increase the brightness of the vehicle surroundings, most vehicles include an assembly of a plurality of lamps or light sources to provide forward illumination. In addition, it is becoming a mainstream of design to integrate a small projection device into a car light to project driving information. Generally, a lamp assembly includes a housing and a plurality of optical lens modules disposed inside the housing. The optical lens module comprises a lens barrel and a lens group. In order to fix the optical lens module on the substrate, the lens assembly (or lens group) is usually combined with the lens barrel by a positioning rib or a hot melt adhesive, and then the lens barrel, the base and the heat dissipation substrate are combined to ensure that no relative displacement is generated among the lens assembly, the base and the substrate.

However, during the assembly process of the lens assembly, it is important how to accurately fix the relative positions of the lens and the solid-state light source.

Disclosure of utility model

The utility model aims to accurately fix the position of a lens and reduce the number of components.

In order to achieve the above object, the present utility model provides a lens module, comprising:

The lens holder is connected with the fixing piece and comprises a containing cavity and a bearing surface positioned in the containing cavity; and

The lens group is arranged in the accommodating cavity and is supported by the bearing surface.

Preferably, the heat sink further comprises a heat sink disposed on the bottom surface of the fixing piece, and the heat sink comprises a plurality of heat dissipation fins.

Further preferably, the fixing piece comprises a first locking hole, the heat sink comprises a second locking hole, and the first locking hole is opposite to the second locking hole.

Further preferably, the fixing device further comprises a fixing piece, and the fixing piece is arranged in the first locking hole and the second locking hole.

Preferably, the lens assembly further comprises a fixing pressing piece arranged around the lens assembly, and the fixing pressing piece is used for fixing the lens assembly in the accommodating cavity.

Further preferably, the optical fiber module further comprises a wavelength conversion element, which is arranged on the heat sink and exposed in the accommodating cavity.

Further preferably, the wavelength converting element comprises a fluorescent material.

In order to achieve the above object, the present utility model further provides a lens module, including:

The integrated lens seat is composed of a radiating fin and a lens holder, wherein the lens holder is connected with the radiating fin and comprises a containing cavity and a bearing surface positioned in the containing cavity, and the radiating fin comprises a plurality of radiating fins; and

Preferably, the wavelength conversion element is arranged on the heat dissipation plate and exposed in the accommodating cavity.

The integrated lens seat is composed of a radiating fin and a lens holder, wherein the lens holder is connected with the radiating fin, a slotted hole is formed between the bottom surface of the lens holder and the top surface of the radiating fin, the lens holder comprises a containing cavity and a bearing surface positioned in the containing cavity, and the radiating fin comprises a plurality of radiating fins; and

Preferably, the LED lamp further comprises a light source module and a circuit board, wherein the light source module is arranged on the circuit board, and the light source module and the circuit board are arranged in the slot hole.

Compared with the prior art, the utility model realizes accurate fixing of the position of the lens and reduction of the number of components by the integrated lens holder bearing the lens group.

Drawings

FIGS. 1A and 1B are an exploded view of a lens module according to an embodiment of the present utility model and an exploded view of a lens module according to another embodiment of the present utility model, respectively;

FIG. 2 is an assembled view of a lens module according to an embodiment of the utility model;

FIG. 3 is an exploded view of a lens module according to another embodiment of the present utility model;

fig. 4 is an exploded view of a lens module according to another embodiment of the present utility model.

Detailed Description

For a further understanding of the objects, construction, features, and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments.

Certain terms are used throughout the description and claims to refer to particular components. It will be appreciated by those of ordinary skill in the art that manufacturers may refer to a component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functional differences. The description of the upper, lower, top, bottom, etc. mentioned in the specification is based on the directions marked in the drawings and the definition manner used by people to explain the positional relationship among the components, and is not intended to limit the actual placement or use direction of the product. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to.

Please refer to fig. 1A and fig. 1B. Fig. 1A and 1B are respectively an exploded view of a lens module 100 according to an embodiment of the utility model and an exploded view of the lens module 100 according to another embodiment of the utility model. The lens module 100 includes an integrated lens holder 110 and a lens set 120. The lens holder 110 is composed of a fixing piece 112 and a lens holder 114, the lens holder 114 is connected to the fixing piece 112, and the lens holder 114 includes a receiving cavity 115 and a bearing surface 117 around the receiving cavity 115. The lens assembly 120 is disposed in the accommodating cavity 115 and is supported against the supporting surface 117.

Referring to fig. 1A, the bearing surface 117 includes a first bearing surface 117a and a second bearing surface 117b. The first bearing surface 117a is located on the top surface of the upper end of the accommodating chamber 115, and the second bearing surface 117b is located on the top surface of the lower end of the accommodating chamber 115. The first bearing surface 117a is located on the second bearing surface 117b, and the first bearing surface 117a and the second bearing surface 117b extend inward in a stepped manner, so that the first lens 121 and the second lens 122 in the lens assembly 120 can respectively bear against the first bearing surface 117a and the second bearing surface 117b.

Referring to fig. 1A, the bearing surface 117 may further include a first positioning rib 116a and a second positioning rib 116b, the first positioning rib 116a is located in a radial direction of the first bearing surface 117a and extends toward the accommodating cavity 115, and the second positioning rib 116b is located in a radial direction of the second bearing surface 117b and extends toward the accommodating cavity 115. The first positioning rib 116a is used to position the first lens 121 in the lens group 120 on the first bearing surface 117a, and the second positioning rib 116b is used to position the second lens 122 in the lens group 120 on the second bearing surface 117 b.

In addition, referring to fig. 1A and 1B, the lens module 100 may include a first fixing pressing piece 130 and a second fixing pressing piece 131, which are respectively disposed around the lens assembly 120, the first fixing pressing piece 130 is used for fixing the first lens 121 in the lens assembly 120 on the first bearing surface 117a, and the second fixing pressing piece 131 is used for fixing the second lens 122 in the lens assembly 120 on the second bearing surface 117B. As shown in fig. 1A, the first fixing pressing piece 130 is, for example, an annular clip, the edge of which extends downward and has a clip hole 132, and the periphery of the lens holder 114 is, for example, provided with a clip 118 protruding out of the lens holder 114 and opposite to the clip hole 132. As shown in fig. 2, when the engaging hole 132 of the first fixing clip 130 is engaged with the fastener 118, the first fixing clip 130 can fix the lens assembly 120 on the lens holder 114, so as to ensure that no relative displacement occurs between the lens assembly 120 and the lens holder 114.

In addition, the lens holder 110 is an integrated structure, for example, by plastic injection molding or metal molding, so as to form a fixing piece 112 and a lens holder 114 with predetermined structures. The fixing piece 112 is, for example, plate-shaped and has at least a first locking hole 113, and the lens holder 114 is, for example, barrel-shaped and has an opening (for example, a central opening) at its bottom. Because the lens base 110 is an integrated structure, no relative displacement occurs between the fixing piece 112 and the lens holder 114, and thus the alignment quality is prevented from being affected by the offset of the relative positions of the split lens barrel and the base during the assembly process in the prior art.

In addition, referring to fig. 1B, the lens module 100 may include a heat sink 140, where the heat sink 140 includes a second locking hole 142 and a plurality of heat sink fins 143. The heat sink 140 is disposed on the bottom surface of the fixing plate 112 for conducting heat to the heat sink 143 to accelerate cooling and heat dissipation. When the lens module 100 is assembled on the heat sink 140, the first locking hole 113 is opposite to the second locking hole 142, so that the lens module 100 is accurately positioned on the heat sink 140, and the relative position is prevented from being shifted during the assembly process to affect the alignment quality. Referring to fig. 2, in an embodiment, a fixing member 146 (e.g. a screw or the like) is disposed in the first locking hole 113 and the second locking hole 142, and the fixing member 146 is used to fix the lens module 100 on the heat sink 140. In another embodiment, the lens module 100 may also be fixed on the heat sink 140 by a hot melt adhesive or a photo-curable adhesive, which is not limited in the present utility model.

In addition, the lens module 100 may include a wavelength conversion element 144. The wavelength conversion element 144 is disposed in the accommodating cavity 115 for converting the wavelength of the incident light. The wavelength conversion element 144 may be a fluorescent material, for example, coated on the top surface of the heat sink 140 or attached to the heat sink 140. Referring to fig. 1B, the bottom surface of the fixing plate 112 has an opening (not shown), and the wavelength conversion element 144 is disposed on the heat sink 140 and can be exposed in the opening, and the wavelength conversion element 144 is correspondingly located on the optical path of the lens assembly 120. When light is incident into the accommodating cavity 115 through the lens assembly 120, the wavelength conversion element 144 receives the energy of the incident light to generate excitation light, and the excitation light exits to the outside of the lens assembly 120 through the lens assembly 120 to serve as an auxiliary light source.

In one embodiment, in the application field of the lamp assembly, the lens module 100 can be assembled in a lamp housing (not shown) for projecting driving information or auxiliary light source to help the driver to grasp the driving information or road condition in front of the vehicle. However, in another embodiment, the lens module 100 can also be applied to a projector or other electronic devices, which is not limited in the present utility model.

Please refer to fig. 3. Fig. 3 is an exploded view of a lens module 101 according to another embodiment of the utility model. The lens module 101 includes an integrated lens holder 110 and a lens set 120. The lens holder 110 is composed of a heat sink 140 and a lens holder 114, the lens holder 114 is connected to the heat sink 140, and the lens holder 114 includes a receiving chamber 115 and a bearing surface 117 located in the receiving chamber 115. The heat sink 140 includes a plurality of heat sink fins 143. In addition, the lens assembly 120 is disposed in the accommodating cavity 115 and is supported by the supporting surface 117.

The present embodiment is different from the above embodiment in that: the lens holder 110 is molded, for example, from metal or other materials, to form the heat sink 140 and the lens holder 114 in a predetermined configuration. The heat sink 140 includes a plurality of heat dissipating fins 143 for conducting heat to the heat dissipating fins 143 to accelerate cooling and heat dissipation. Since the heat sink 140 and the lens holder 114 are not connected by a fixing piece, and the heat sink 140 and the lens holder 114 are directly connected without generating relative displacement, the alignment quality is prevented from being affected by the offset of the relative positions of the split lens barrel and the base or the heat dissipation substrate in the assembly process in the prior art.

The structure of the receiving cavity 115 and the bearing surface 117 and the snap-fit arrangement of the first and second fixing tabs 130 and 131 have been described in the above embodiments, and the elements with the same functions are denoted by the same or similar reference numerals, and will not be repeated here.

In addition, the lens module 101 may include a wavelength conversion element 144 configured as shown in fig. 1B. The wavelength conversion element 144 is disposed in the accommodating cavity 115 for converting the wavelength of the incident light. The wavelength conversion element 144 may be a fluorescent material, for example, coated on the top surface of the heat sink 140 or attached to the heat sink 140. The fluorescent material can emit light with a longer wavelength (usually visible light), namely visible fluorescence or excitation light, after being irradiated by light with a certain wavelength (such as ultraviolet rays or x-rays) to absorb energy. The fluorescent material may include phosphor particles made of yttrium aluminum garnet (yttrium aluminum garnet; YAG) having a higher melting point relative to the organic particles. Therefore, even when the phosphor particles are irradiated with high energy or exposed at high temperature, the phosphor particles are not easily damaged by thermal shock. In some embodiments, the phosphor particles can withstand high power light (e.g., laser blue light) and have a higher thermal conductivity relative to the organic material, so that the wavelength conversion element 144 has better heat resistance.

In another embodiment, the fluorescent material may also include an organic luminescent material or white functional particles for adjusting the scattering path of the excitation light. The white functional particles may be made of aluminum oxide (Al 2O 3), titanium oxide (TiO 2), zinc oxide (ZnO), zirconium oxide (ZrO 2), tantalum oxide (Ta 2O 5), or other suitable materials.

Please refer to fig. 4. Fig. 4 is an exploded view of a lens module 102 according to another embodiment of the utility model. The lens module 102 includes an integrated lens holder 110 and a lens set 120. The lens holder 110 is composed of a heat sink 140 and a lens holder 114. The lens holder 114 is connected to the heat sink 140, and a slot 145 is provided between the bottom surface of the lens holder 114 and the top surface of the heat sink 140. The lens holder 114 includes a receiving cavity 115 and a bearing surface 117 located in the receiving cavity 115. The heat sink 140 includes a plurality of heat sink fins 143. In addition, the lens assembly 120 is disposed in the accommodating cavity 115 and is supported by the supporting surface 117.

The present embodiment is different from the above embodiment in that: the heat sink 140 and the lens holder 114 have a slot 145 therebetween such that a bottom surface of the lens holder 114 is spaced apart from a top surface of the heat sink 140 by a predetermined distance. As shown in fig. 4, the lens holder 110 is molded, for example, from metal or other materials, to form a heat sink 140, a lens holder 114, and a slot 145 of a predetermined structure. In the appearance of the heat sink 140, the thickness of the central portion 140a of the heat sink 140 is thinner, the thickness of the two outer portions 140b of the heat sink 140 is thicker, such that the center of the heat sink 140 is formed in a notch shape, and the lens holder 114 is bridged over the slot 145 and connected between the two outer portions 140b having a thicker thickness. Thus, a slot 145 is formed between the bottom surface of the lens holder 114 and the top surface of the heat sink 140.

Since the heat sink 140 and the lens holder 114 are not connected by a fixing piece, and the heat sink 140 and the lens holder 114 are directly connected without generating relative displacement, the alignment quality is prevented from being affected by the offset of the relative positions of the split lens barrel and the base or the heat dissipation substrate in the assembly process in the prior art.

In one embodiment, the slot 145 is, for example, elongated or flat, for accommodating an electronic device, which may be an optical element or an image sensing element, which is not limited in the present utility model. Referring to fig. 4, the electronic device may include a light source module 150 and a circuit board 152, wherein the light source module 150 is disposed on the circuit board 152, and the light source module 150 and the circuit board 152 are disposed in the slot 145. In one embodiment, the light source module 150 is, for example, a solid-state light source or other type of light source, and the solid-state light source is, for example, a light emitting diode device for generating projection light or light signals. In addition, a control chip (not shown) may be disposed on the circuit board 152 for providing voltage signals and control signals required by the light source module 150 to control the light source module 150 to generate projection light or light signals.

In addition, the circuit board 152 may be fastened to the heat sink 140 by screws or other means, and heat generated by the light source module 150 is conducted to the heat sink 143 through the heat sink 140, so as to accelerate cooling and heat dissipation.

In one embodiment, in the application field of the lamp assembly, the lens module 102 and the light source module 150 are combined into an electronic assembly and can be assembled in the lamp housing for projecting driving information or auxiliary light source to help the driver to grasp the driving information or road condition in front of the vehicle. However, in another embodiment, the lens module 102 and the light source module 150 can also be applied to a projector or other electronic devices, which is not limited in the present utility model.

In summary, the lens module according to the above embodiment of the utility model can fix the lens assembly in the accommodating cavity of the lens holder, so as to ensure that no relative displacement occurs between the lens assembly and the lens holder. In addition, because the lens holder is an integrated structure, the number of components is reduced, and relative displacement can not be generated between the fixing piece and the lens holder, or the radiating fin and the lens holder are directly connected and can not generate relative displacement, the problem that the relative positions of the split lens barrel and the base or the radiating substrate deviate in the assembly process to influence the alignment quality in the prior art can be avoided.

The utility model has been described with respect to the above-described embodiments, however, the above-described embodiments are merely examples of practicing the utility model. It should be noted that the disclosed embodiments do not limit the scope of the utility model. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. A lens module, comprising:

2. The lens module of claim 1, further comprising a heat sink disposed on a bottom surface of the fixing piece, the heat sink comprising a plurality of heat sink fins.

3. The lens module of claim 2, wherein the fixing piece includes a first locking hole, and the heat sink includes a second locking hole, the first locking hole being opposite to the second locking hole.

4. The lens module of claim 3, further comprising a fastener disposed in the first locking hole and the second locking hole.

5. The lens module of claim 1, further comprising a securing tab disposed about the lens assembly, the securing tab configured to secure the lens assembly within the receiving cavity.

6. The lens module of claim 2, further comprising a wavelength conversion element disposed on the heat sink and exposed in the receiving cavity.

7. The lens module of claim 6, wherein the wavelength conversion element comprises a fluorescent material.

8. A lens module, comprising:

9. The lens module of claim 8, further comprising a wavelength conversion element disposed on the heat sink and exposed in the receiving cavity.

10. The lens module of claim 9, wherein the wavelength conversion element comprises a fluorescent material.

11. The lens module of claim 8, further comprising a securing tab disposed about the lens assembly, the securing tab configured to secure the lens assembly within the receiving cavity.

12. A lens module, comprising:

13. The lens module of claim 12, further comprising a light source module and a circuit board, wherein the light source module is disposed on the circuit board, and the light source module and the circuit board are disposed in the slot.

14. The lens module of claim 12, further comprising a securing tab disposed about the lens assembly, the securing tab configured to secure the lens assembly within the receiving cavity.