CN114967025B - Spacer ring and lens module - Google Patents
Spacer ring and lens module Download PDFInfo
- Publication number
- CN114967025B CN114967025B CN202110361632.0A CN202110361632A CN114967025B CN 114967025 B CN114967025 B CN 114967025B CN 202110361632 A CN202110361632 A CN 202110361632A CN 114967025 B CN114967025 B CN 114967025B
- Authority
- CN
- China
- Prior art keywords
- annular
- annular member
- spacer ring
- lens
- edge surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 125000006850 spacer group Chemical group 0.000 title claims abstract description 64
- 230000003287 optical effect Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 16
- 238000000576 coating method Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000003667 anti-reflective effect Effects 0.000 claims description 4
- 229910021389 graphene Inorganic materials 0.000 claims description 4
- -1 graphene compound Chemical class 0.000 claims description 4
- 230000008033 biological extinction Effects 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 238000003384 imaging method Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 150000002736 metal compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
- G02B1/118—Anti-reflection coatings having sub-optical wavelength surface structures designed to provide an enhanced transmittance, e.g. moth-eye structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
The invention provides a spacer ring and a lens module, wherein the spacer ring comprises: a first annular member having a first maximum thickness in an axial direction; and a second annular member disposed to overlap with the first annular member in a radial direction and an axial direction, wherein: the first annular part comprises a first inner edge surface, the second annular part comprises a second inner edge surface, the first inner edge surface and the second inner edge surface form an annular groove, an opening of the annular groove faces to the axle center of the spacing ring, and the size of the opening is gradually increased along the radial direction towards the axle center; and the first annular part and the second annular part are provided with a second maximum thickness at the position where the first annular part and the second annular part are overlapped in the axial direction, and the first maximum thickness is larger than or equal to the second maximum thickness. The first annular component is used for controlling the air interval between two adjacent lenses to improve imaging quality, and an annular groove structure with a V-shaped or cup-shaped section is formed between the second annular component and the first annular component so as to achieve the function of eliminating stray light.
Description
Technical Field
The present invention relates to a spacer ring, and more particularly to a lens module with a spacer ring.
Background
A conventional lens module generally includes at least one spacer ring disposed between two optical elements to adjust a distance between the two optical elements, so as to adjust an optical performance of the lens module, for example, to adjust a focal length between two lenses. However, some incident light does not directly enter the image sensor after being refracted by the optical element, but enters the image sensor after being reflected by the surface of the spacer ring, so that ghosts are formed, and the quality of the photographed image is seriously affected by the existence of the ghosts.
Referring to fig. 1, the spacer ring 90 of the lens module 9 has an annular groove 902, and when the incident light L is reflected in the lens module 9 for multiple times to form stray light, the annular groove 902 can reflect and consume the stray light for multiple times through the inner surface thereof, thereby improving the imaging quality. The spacer ring 90 is made of a metal material, and the annular groove 90 is made by turning, but as the camera lens module enters the high pixel area, the process tolerance of the turning method is poor and the accuracy is poor.
Therefore, there is a need to provide a spacer ring and a lens module, which can solve the above-mentioned problems.
Disclosure of Invention
It is an object of the present invention to provide a spacer ring that can be designed as more than two annular members, a first annular member and a second annular member.
In accordance with the above objects, the present invention provides a spacer ring defining a radial direction and an axial direction perpendicular to each other, the spacer ring comprising: a first annular member having a first maximum thickness in the axial direction; and a second annular member overlapping the first annular member in the radial direction and the axial direction, wherein: the first annular part comprises a first inner edge surface, the second annular part comprises a second inner edge surface, the first inner edge surface and the second inner edge surface form an annular groove, an opening of the annular groove faces to an axle center of the spacing ring, and the size of the opening is gradually increased along the radial direction towards the axle center; the first annular part and the second annular part are provided with a second maximum thickness at the position where the first annular part and the second annular part are overlapped in the axial direction, and the first maximum thickness is larger than or equal to the second maximum thickness.
Optionally, the first annular component further comprises: a first surface and a second surface opposite to each other, and the second annular member further comprises: a third surface and a fourth surface, wherein the first surface is closer to the third surface than the second surface; the first maximum thickness is a maximum distance between the first surface and the second surface of the first annular component along the axial direction; and the second maximum thickness is a maximum distance between the second surface of the first annular component and the third surface of the second annular component along the axial direction.
Optionally, tangential directions of the first surface, the second surface, the third surface and the fourth surface are perpendicular to the axial direction.
Optionally, the first annular component comprises: a first outer peripheral surface, and the second annular member comprises: the first outer edge surface and the second outer edge surface are respectively opposite to the first inner edge surface and the second inner edge surface, and the diameter of the first outer edge surface is larger than that of the second outer edge surface.
Optionally, the first inner edge surface of the first annular component abuts the fourth surface and the second outer edge surface of the second annular component.
Optionally, the first inner edge surface of the first annular component forms a groove, a plane or a step, and the second annular component is disposed in the groove, the plane or the step.
Optionally, the opening of the annular groove increases in size in the direction of the axial center along the radial direction in a V-shaped or cup-shaped cross section.
Optionally, the surface of the annular groove is provided with a plurality of stray light eliminating structures, and each stray light eliminating structure is approximately S-shaped or < shaped.
Optionally, the surface of the annular groove is provided with an anti-reflection layer.
Optionally, the anti-reflection layer is disposed on the surface of the annular groove by a coating process or an inking process.
Optionally, in the coating process, the anti-reflection layer is made of a dielectric coating or a metal coating; and in the inking process, the material of the anti-reflection layer is extinction ink or graphene compound.
The present invention further provides a lens module, sequentially comprising, from an object side to an image side: a first lens, a spacer ring and a second lens; wherein the spacer ring is any one of the spacer rings described above.
Optionally, the first annular component and the second annular component are stacked and combined sequentially along the optical axis, and the material refractive index of the first annular component is greater than that of the second annular component.
Optionally, the first annular component and the second annular component are stacked and combined in sequence along the optical axis, the first annular component is adjacent to the first lens and the second lens, and the second annular component is not adjacent to the first lens.
Optionally, the second annular component and the first annular component are stacked and combined sequentially along the optical axis, and the material refractive index of the second annular component is greater than that of the first annular component.
Optionally, the second annular component and the first annular component are stacked and combined in sequence along the optical axis, the first annular component is adjacent to the first lens and the second lens, and the second annular component is not adjacent to the second lens.
The spacer ring can be designed into more than two annular parts of the first annular part and the second annular part, and the thickness of the first annular part is larger than the superposition thickness of the first annular part and the second annular part, so that the first annular part is used as an external spacer ring, and the thickness of the external spacer ring determines the distance between two adjacent lenses and is used for controlling the air interval between the two adjacent lenses so as to improve the imaging quality; and the second annular part is only used as an inner spacing ring, and forms an annular groove structure with a V-shaped or cup-shaped section with the first annular part to generate a light trap so as to achieve the function of eliminating stray light. Furthermore, the spacer ring design with annular grooves of the present invention has more than two annular parts, and can be manufactured by injection molding with small tolerance and high precision.
Drawings
Fig. 1 is a schematic cross-sectional view of a lens module according to the prior art.
Fig. 2a is a schematic cross-sectional view of a lens module according to an embodiment of the invention.
Fig. 2b is a schematic cross-sectional view of a lens module according to another embodiment of the invention.
FIG. 3 is a schematic partial perspective cross-sectional view of a combined spacer ring according to one embodiment of the present invention.
FIG. 4a is a schematic partial cross-sectional view of a combined spacer ring according to one embodiment of the present invention.
FIG. 4b is a schematic partial cross-sectional view of an exploded spacer ring according to one embodiment of the present invention.
FIG. 5 is a schematic cross-sectional view of a combined spacer ring according to one embodiment of the present invention.
FIG. 6 is a schematic partial cross-sectional view of a spacer ring assembled in accordance with another embodiment of the present invention.
Fig. 7a and 7b are partial perspective cutaway views of a spacer ring assembled in accordance with another embodiment of the present invention.
In the figure:
1, a lens module; 1' a lens module; 10 spacer rings; 100 annular grooves; 101 openings; 102 an anti-reflection layer; 103 stray light eliminating structure; 11 a first annular member; 110 grooves; 111 a first outer peripheral surface; 112 a first inner edge surface; 113 a first surface; 114 a second surface; a second annular member; 121 a second peripheral surface; 122 a second inner edge surface; 123 a third surface; 124 a fourth surface; 13 lenses; a 14-lens; 15 lenses; 16 shading plates; a 17 filter; 18 imaging surface; 9, a lens module; a 90 spacer ring; 902 an annular groove; d1 first maximum thickness; d2 second maximum thickness; an I optical axis; l incident light; an O axis; t1 is radial; t2 is axial; diameter of phi 11; phi 12 diameter.
Detailed Description
In order to make the above objects, features and characteristics of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
The invention is illustrated below with respect to a lens module of a three-piece lens assembly. Referring to fig. 2a, the lens module 1 sequentially includes, from an object side to an image side: lens 13, lens 14, spacer ring 10 and lens 15, which are arranged in order along optical axis I. In this embodiment, the lens module 1 further includes: a light shielding plate 16 and a filter 17, wherein the light shielding plate 16 is disposed between the lenses 14 and 15 along the optical axis I, and the filter 17 (e.g., an infrared filter) is disposed behind the lens 15 along the optical axis I. The light shielding plate 16 may be an Aperture Stop (Aperture Stop) or a Stop (Stop) for correcting marginal rays, but is not limited thereto. The light passes through the lens 13, the lens 14 and the lens 15, and passes through the filter 17, so that the light reaches an imaging surface 18. The lens 13, the lens 14 and the lens 15 may be plastic lenses.
Referring to fig. 3 and 4a, the spacer ring 10 defines a radial direction T1 and an axial direction T2 perpendicular to each other, and the axial direction T2 is parallel to the optical axis I. The spacer ring 10 includes: a first annular member 11 and a second annular member 12, the second annular member 12 and the first annular member being disposed overlapping each other in the radial direction T1 and the axial direction T2. The material of the first annular member 11 and the second annular member 12 may be metal or plastic.
The first annular member 11 includes a first inner edge surface 112, and the second annular member 12 includes a second inner edge surface 122, and both the first inner edge surface 112 and the second inner edge surface 122 may face the axial center O of the spacer ring 10. The first inner edge surface 112 and the second inner edge surface 122 form an annular groove 100, an opening 101 of the annular groove 100 faces the axial center O of the spacer ring 10, and a dimension of the opening 101 increases along the radial direction T1 toward the axial center O. In the present embodiment, the opening 101 of the annular groove 100 is gradually increased in size along the radial direction T1 toward the axis O in a V-shaped cross section, as shown in fig. 2 a. In another embodiment, the opening 101 of the annular groove 100 is larger in size along the radial direction T1 toward the axis O in a cup-shaped cross section, as shown in fig. 2b, but not limited thereto.
Referring to fig. 4a, 4b and 5, the first annular member 11 has a first maximum thickness D1 in the axial direction T2 (i.e. the thickness of the first annular member 11 in the axial direction T2), and the overlapping position of the first annular member 11 and the second annular member 12 in the axial direction T2 has a second maximum thickness D2 (i.e. the overlapping thickness of the first annular member 11 and the second annular member 12 in the axial direction T2), wherein the first maximum thickness D1 is greater than or equal to the second maximum thickness D2. In this embodiment, the first annular member 11 further includes a first surface 113 and a second surface 114 opposite to each other, and the second annular member 12 further includes a third surface 123 and a fourth surface 124, wherein the first surface 113 is closer to the third surface 123 than the second surface 114. The tangential direction of the first surface 113, the second surface 114, the third surface 123 and the fourth surface 124 may be perpendicular to the axial direction T2, so that the first annular component 11 and the second annular component 12 after stacking and combining are easily positioned between the lenses 14, 15. For example, the first maximum thickness D1 may be a maximum distance between the first surface 113 and the second surface 114 of the first annular component 11 along the axial direction T2, and the second maximum thickness D2 may be a maximum distance between the second surface 114 of the first annular component 11 and the third surface 123 of the second annular component 12 along the axial direction T2. The first annular component 11 further includes a first outer edge surface 111, the second annular component 12 further includes a second outer edge surface 121, the first outer edge surface 111 and the second outer edge surface 121 are opposite to the first inner edge surface 112 and the second inner edge surface 122, respectively, that is, the first outer edge surface 111 and the second outer edge surface 121 can face away from the axis O of the spacer ring 10, and the diameter Φ11 of the first outer edge surface 111 is larger than the diameter Φ12 of the second outer edge surface 121.
The spacer ring of the present invention can be designed into more than two annular parts of the first annular part 11 and the second annular part 12, and the thickness of the first annular part 11 in the axial direction T2 is greater than the overlapped thickness of the first annular part 11 and the second annular part 12 in the axial direction T2, so that the first annular part 11 is used as an external spacer ring, and the thickness of the external spacer ring determines the distance between two adjacent lenses 14 and 15 so as to control the air space between the two adjacent lenses 14 and 15 to improve the imaging quality; and the second annular part 12 is only used as an inner spacer ring, and forms an annular groove structure with a V-shaped or cup-shaped section with the first annular part 11 to generate light traps so as to achieve the function of eliminating stray light. Furthermore, the spacer ring design with annular grooves of the present invention has more than two annular parts, and can be manufactured by injection molding with small tolerance and high precision.
Referring to fig. 4a and 4b again, in the present embodiment, the first inner edge surface 112 of the first annular component 11 abuts the fourth surface 124 and the second outer edge surface 121 of the second annular component 12. The first inner edge surface 112 of the first annular member 11 may form a recess 110, and the second annular member 12 is disposed in the recess 110 of the first inner edge surface 112. In another embodiment, the first inner edge surface 112 of the first annular component 11 may also form a plane or a step, and the second annular component 12 is disposed in the plane or the step of the first inner edge surface 112. The grooves 110, flats or steps provide a large contact area, thus allowing the first annular member 11 and the second annular member 12 to be easily stacked.
FIG. 6 is a schematic partial cross-sectional view of a spacer ring according to another embodiment of the present invention. The annular groove 100 is provided with an anti-reflective layer 102 on a first inner edge surface 112 and a second inner edge surface 122. The anti-reflection layer 102 is disposed on the first inner edge surface 112 and the second inner edge surface 122 by a plating process or an inking process. In the coating process, the material of the anti-reflection layer 102 is a dielectric coating or a metal coating. For example, the coating process adopts a physical vapor deposition coating method, and one or more layers of dielectric coating films or metal materials (for example, titanium oxide, silicon oxide, magnesium fluoride and other metal compounds are used as materials) are coated, so that the transmission characteristics of light waves are changed, and the transmittance and the reflectivity of the first inner edge surface 112 and the second inner edge surface 122 of the annular groove 100 to visible light are changed, thereby reducing stray light generated during imaging. In the inking process, the material of the anti-reflection layer 102 is a matting ink or a graphene compound. For example, the inking process uses an inking machine to add a coating of reduced reflectivity of matting ink (GT 7), graphene compounds, etc. to the surfaces of the first and second inner peripheral surfaces 112, 122 of the annular groove 100. Alternatively, the inking process uses photocopying: a matting ink (GT 7), a graphene compound, or the like is transferred onto the surfaces of the first inner edge surface 112 and the second inner edge surface 122 of the annular groove 100 by soft silica gel.
Fig. 7a and 7b are schematic partial cutaway perspective views of spacer rings according to another embodiment of the present invention. The first inner edge surface 112 of the first annular component 11 and the second inner edge surface 122 of the second annular component 12 are provided with a plurality of stray light eliminating structures 103, each of which is approximately an S-shaped groove or a < shaped groove, so as to generate a better light trapping effect.
Referring to fig. 2a again, in the present embodiment, the first annular component 11 and the second annular component 12 are stacked and combined sequentially along the optical axis I, for example, the first annular component 11 and the second annular component 12 are stacked and combined and fixed in an adhesive, locking or clamping manner. The refractive index of the material of the first annular component 11 is greater than that of the material of the second annular component 12, so that the light from the object side is easy to generate the effect of total reflection at the interface of the first annular component 11 and the second annular component 12. Furthermore, the first annular member 11 abuts the lens 14 and the lens 15, and the second annular member 12 does not abut the lens 14. Since the first annular member 11 abuts the lens 14 and the lens 15, the first annular member 11 can serve as an outer spacer ring, and the thickness of the outer spacer ring determines the distance between the two adjacent lenses 14 and 15, so as to control the air gap between the two adjacent lenses 14 and 15 to improve the imaging quality; and, since the second annular member 12 is not adjacent to the lens 14, the second annular member 12 only serves as an inner spacer ring, and forms an annular groove structure with a V-shaped or cup-shaped cross section with the first annular member 11, thereby generating an optical trap for eliminating stray light.
Referring to fig. 2b again, in another embodiment, the second annular member 12 and the first annular member 11 are stacked in sequence along the optical axis I. The refractive index of the material of the second annular member 12 is greater than that of the material of the first annular member 11, so that the light from the object side is easy to generate the effect of total reflection at the interface between the second annular member 12 and the first annular member 11. Furthermore, the first annular member 11 abuts the lens 14 and the lens 15, and the second annular member 12 does not abut the lens 15. Since the first annular member 11 abuts the lens 14 and the lens 15, the first annular member 11 serves as an outer spacer ring, and the thickness of the outer spacer ring determines the distance between the two adjacent lenses 14 and 15, so as to control the air gap between the two adjacent lenses 14 and 15 to improve the imaging quality; and, since the second annular member 12 is not adjacent to the lens 15, the second annular member 12 only serves as an inner spacer ring, and forms an annular groove structure with a V-shaped or cup-shaped cross section with the first annular member 11, thereby generating an optical trap for eliminating stray light.
The above-described embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention. The protection scope of the invention is subject to the claims.
Claims (15)
1. A spacer ring for a lens module, the lens module comprising, in order from an object side to an image side, a first lens, the spacer ring and a second lens, the spacer ring defining a radial direction and an axial direction perpendicular to each other, the spacer ring comprising:
a first annular member having a first maximum thickness in the axial direction; and
a second annular member overlapping the first annular member in the radial direction and the axial direction, wherein:
the first annular part comprises a first inner edge surface, the second annular part comprises a second inner edge surface, the first inner edge surface and the second inner edge surface form an annular groove, an opening of the annular groove faces to an axle center of the spacing ring, and the size of the opening is gradually increased along the radial direction towards the axle center;
the first annular part and the second annular part are overlapped in the axial direction and have a superposed thickness which is a second maximum thickness, and the first maximum thickness is larger than the second maximum thickness;
wherein the first annular component further comprises: a first surface and a second surface opposite to each other, and the second annular member further comprises: a third surface and a fourth surface, wherein the first surface is closer to the third surface than the second surface；
The first maximum thickness is a maximum distance between the first surface and the second surface of the first annular component along the axial direction;
the second maximum thickness is a maximum distance between the second surface of the first annular component and the third surface of the second annular component along the axial direction; and
the first annular member acts as an outer spacer ring, the thickness of which determines the spacing between adjacent first and second lenses.
2. The spacer ring as defined in claim 1 wherein the tangential direction of the first surface, the second surface, the third surface and the fourth surface is perpendicular to the axial direction.
3. The spacer ring as defined in claim 1 wherein the first annular member comprises: a first outer peripheral surface, and the second annular member comprises: the first outer edge surface and the second outer edge surface are respectively opposite to the first inner edge surface and the second inner edge surface, and the diameter of the first outer edge surface is larger than that of the second outer edge surface.
4. The spacer ring as defined in claim 3 wherein the first inner peripheral surface of the first annular member abuts the fourth surface and the second outer peripheral surface of the second annular member.
5. The spacer ring as claimed in claim 4 wherein the first inner peripheral surface of the first annular member forms a groove, a flat surface or a step and the second annular member is disposed in the groove, the flat surface or the step.
6. The spacer ring as defined in claim 1 wherein the opening of the annular groove increases in size in the direction of the axial center along the radial direction in a V-shaped or cup-shaped cross section.
7. The spacer ring of claim 1, wherein a surface of the annular groove is provided with a plurality of stray light abatement structures, each of the stray light abatement structures being generally S-shaped or < shaped.
8. The spacer ring as defined in claim 1 wherein the surface of the annular groove is provided with an anti-reflective layer.
9. The spacer ring of claim 8, wherein the anti-reflective layer is disposed on the surface of the annular groove by a plating process or an inking process.
10. The spacer ring of claim 9, wherein the anti-reflective layer is formed from a dielectric coating or a metallic coating during the coating process; and in the inking process, the material of the anti-reflection layer is extinction ink or graphene compound.
11. A lens module sequentially comprises, from an object side to an image side:
a first lens, a spacer ring and a second lens;
the first lens, the spacer ring and the second lens are as claimed in any one of claims 1 to 10.
12. The lens module as claimed in claim 11, wherein the first annular member and the second annular member are sequentially stacked along the optical axis, and a material refractive index of the first annular member is greater than a material refractive index of the second annular member.
13. The lens module as claimed in claim 11, wherein the first annular member and the second annular member are stacked in order along the optical axis, the first annular member is adjacent to the first lens and the second lens, and the second annular member is not adjacent to the first lens.
14. The lens module as claimed in claim 11, wherein the second annular member and the first annular member are sequentially stacked along the optical axis, and a material refractive index of the second annular member is greater than a material refractive index of the first annular member.
15. The lens module as claimed in claim 11, wherein the second annular member and the first annular member are sequentially stacked along the optical axis, the first annular member is adjacent to the first lens and the second lens, and the second annular member is not adjacent to the second lens.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW110105789A TWI746376B (en) | 2021-02-19 | 2021-02-19 | Spacer ring and lens module |
| TW110105789 | 2021-02-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114967025A CN114967025A (en) | 2022-08-30 |
| CN114967025B true CN114967025B (en) | 2024-01-19 |
Family
ID=79907621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110361632.0A Active CN114967025B (en) | 2021-02-19 | 2021-04-02 | Spacer ring and lens module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114967025B (en) |
| TW (1) | TWI746376B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634738A (en) * | 2008-07-25 | 2010-01-27 | 鸿富锦精密工业（深圳）有限公司 | Lens module and camera module |
| CN204241748U (en) * | 2014-11-21 | 2015-04-01 | 桑来斯光电科技(上海)有限公司 | A kind of accurate large aperture light field camera lens |
| CN108459388A (en) * | 2017-02-22 | 2018-08-28 | 大立光电股份有限公司 | Ring-shaped optical element set, imaging lens set and electronic device |
| CN210323530U (en) * | 2019-07-30 | 2020-04-14 | 新钜科技股份有限公司 | Optical element with stray light eliminating structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9946047B2 (en) * | 2014-03-04 | 2018-04-17 | Largan Precision Co., Ltd. | Annual optical spacer, image lens system, and mobile terminal |
| CN205720832U (en) * | 2016-04-25 | 2016-11-23 | 广州市全像光学科技有限公司 | Spacer ring and photographic head |
| CN208156277U (en) * | 2018-05-18 | 2018-11-27 | 南昌欧菲精密光学制品有限公司 | Lens set and lens module |
| TWM578388U (en) * | 2018-10-24 | 2019-05-21 | 大立光電股份有限公司 | Imaging lens assembly, camera module and electronic device |
| TWI701473B (en) * | 2019-09-11 | 2020-08-11 | 大立光電股份有限公司 | Imaging lens assembly module, camera module and electronic device |
-
2021
- 2021-02-19 TW TW110105789A patent/TWI746376B/en active
- 2021-04-02 CN CN202110361632.0A patent/CN114967025B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634738A (en) * | 2008-07-25 | 2010-01-27 | 鸿富锦精密工业（深圳）有限公司 | Lens module and camera module |
| CN204241748U (en) * | 2014-11-21 | 2015-04-01 | 桑来斯光电科技(上海)有限公司 | A kind of accurate large aperture light field camera lens |
| CN108459388A (en) * | 2017-02-22 | 2018-08-28 | 大立光电股份有限公司 | Ring-shaped optical element set, imaging lens set and electronic device |
| CN210323530U (en) * | 2019-07-30 | 2020-04-14 | 新钜科技股份有限公司 | Optical element with stray light eliminating structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114967025A (en) | 2022-08-30 |
| TW202234107A (en) | 2022-09-01 |
| TWI746376B (en) | 2021-11-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108693629B (en) | Imaging lens group with plastic lens, imaging lens module and electronic device | |
| US10545350B2 (en) | Lens element and imaging lens unit | |
| TWI614518B (en) | Imaging lens assembly and electronic device | |
| US7839582B2 (en) | Optical element | |
| US7787184B2 (en) | Member having antireflection structure | |
| WO2004029676A1 (en) | Lens with ir cut filter, method for manufacturing same and small camera | |
| US11327299B2 (en) | Light shielding sheet | |
| JP2010117472A (en) | Optical element and optical system having the same | |
| KR20210035516A (en) | Folded camera module and mobile device having the same | |
| WO2019003878A1 (en) | Lens unit | |
| US7626772B2 (en) | Optical system and optical apparatus having the same | |
| CN114967025B (en) | Spacer ring and lens module | |
| JP2010175941A (en) | Optical filter and method of manufacturing the same, and image capturing apparatus having the same | |
| TWI633331B (en) | Imaging lens assembly and electronic device | |
| CN216646942U (en) | Imaging lens and electronic device | |
| JP2005173326A (en) | Plastic optical component | |
| CN106932848B (en) | Infrared isolation filter and wide-angle and long-focus double-camera mobile phone adopting infrared isolation filter | |
| US11513440B2 (en) | Optical element, optical system, and optical apparatus | |
| US11460612B2 (en) | Spacer | |
| WO2020022295A1 (en) | Optical element, optical system, and optical device | |
| JP5305799B2 (en) | Lens barrel and optical apparatus having the same | |
| US7878720B2 (en) | Shutter and camera module having same | |
| US20240118462A1 (en) | Bokeh filter membrane, imaging optical lens assembly, imaging apparatus and electronic device | |
| TWI817205B (en) | Optical lens assembly, imaging apparatus and electronic device | |
| TWI784333B (en) | Spacer assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |