CN110160009B - Combined optical lens with multiple focal lengths - Google Patents
Combined optical lens with multiple focal lengths Download PDFInfo
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- CN110160009B CN110160009B CN201910504781.0A CN201910504781A CN110160009B CN 110160009 B CN110160009 B CN 110160009B CN 201910504781 A CN201910504781 A CN 201910504781A CN 110160009 B CN110160009 B CN 110160009B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lenses (AREA)
Abstract
The invention relates to the field of optical elements, in particular to a combined optical lens with multiple focal lengths, which comprises a light-emitting surface and an incident surface, wherein the light-emitting surface comprises at least two light-emitting surface areas, and focuses corresponding to the light-emitting surface areas are positioned on the same optical axis; the light-emitting surface areas are spliced into a complete light-emitting surface; the combined optical lens is formed by integrating light emergent surface areas with various different focal lengths into a whole, the light emergent surface of the combined optical lens is of a complete aspheric-like structure, and the incident surface is also integrated into a plane area; the light passes through the combined optical lens and then is overlapped or separately irradiated to the set area, the light emergent surface and the incident surface of the combined optical lens are of an integral structure, no splicing gap exists, the phenomenon that the illumination edges are blurred during the overlapping of the light, the interference and serious loss between the light in different light emergent surfaces are avoided, and the utilization rate and the illumination effect of the light are greatly improved.
Description
Technical Field
The invention relates to the field of optical elements, in particular to a combined optical lens with multiple focal lengths.
Background
Lenses are essential and indispensable optical elements in optical systems, and they play an extremely critical and important role in lighting devices. The illumination quality and function of the illumination device are directly related to the quality and structure of the lens used, so how to manufacture a lens with better quality and function that better meets the requirements of the illumination device is one of the important subjects in manufacturing optical systems.
Most of the convex lenses adopted in the existing lighting devices have only one focal length, and when light irradiates the light incident surface of the convex lens, all the light is focused into a specific lighting area; however, in some special lighting devices, fast switching of lighting areas is often required, in order to meet the functional requirement in the prior art, multiple groups of lighting devices are simultaneously arranged, each group of lighting devices is provided with a light source and a lens with a specific single focal length, when switching is performed between lighting areas, the lighting devices of each group are actually switched, and although the technical scheme can realize switching operation of the lighting areas, multiple groups of lighting devices are arranged in one lighting device, and comprise multiple lighting sources, lamp holders and convex lenses with the specific single focal length, so that the production cost of the lighting device is greatly increased, the internal structural complexity and the overall size of the lighting device are increased, an application scene is required to provide a larger installation space for the lighting device in the installation and application range of the lighting device is greatly limited due to the requirements of the production cost and the installation space.
Disclosure of Invention
In view of the above-mentioned drawbacks, an object of the present invention is to provide a combined optical lens with multiple focal lengths.
To achieve the purpose, the invention adopts the following technical scheme:
The combined optical lens with the multiple focal lengths comprises a light-emitting surface and an incident surface, wherein the light-emitting surface comprises at least two light-emitting surface areas, and focuses corresponding to the light-emitting surface areas are positioned on the same optical axis; the light-emitting areas are spliced into a complete light-emitting surface, and the spliced part between each light-emitting area and the adjacent light-emitting area is integrally formed and completely fused, and the light-emitting surface at the spliced part is of a smooth transition surface structure; the light emergent surface is of an integrally formed aspheric-like structure, and the incident surface is of a planar structure.
More preferably, the light emitting surface comprises a first light emitting surface area, a second light emitting surface area and a third light emitting surface area, the first light emitting surface area and the second light emitting surface area are spliced to form a half area of the light emitting surface, and the third light emitting surface area is the other half area; the focal point corresponding to the first light emitting area is a first focal point, the focal point corresponding to the second light emitting area is a second focal point, and the focal point corresponding to the third light emitting area is a third focal point; the first focus, the second focus and the third focus are on the same optical axis, and the first focus and the second focus are coincident.
More preferably, the light-emitting surface comprises a first light-emitting surface area, a second light-emitting surface area, a third light-emitting surface area and a fourth light-emitting surface area, the first light-emitting surface area and the second light-emitting surface area are spliced to form a half area of the light-emitting surface, and the third light-emitting surface area and the fourth light-emitting surface area are spliced to form the other half area of the light-emitting surface; the focal point corresponding to the first light emitting area is a first focal point, the focal point corresponding to the second light emitting area is a second focal point, the focal point corresponding to the third light emitting area is a third focal point, and the focal point corresponding to the fourth light emitting area is a fourth focal point; the first focus, the second focus, the third focus and the fourth focus are positioned on the same optical axis, the first focus and the second focus are overlapped, and the third focus and the fourth focus are overlapped.
More preferably, the combined optical lens is made of plastic, PMMA, glass optical silica gel and/or PC.
More preferably, the distance between the focuses is 1mm-50mm.
The invention provides a combined optical lens with multiple focal lengths, which is formed by fusing light emergent surface areas with multiple different focal lengths into a whole, wherein the light emergent surface of the combined optical lens is of a complete sphere-like structure, and an incident surface is fused into a complete plane area; different light rays are projected to focuses at corresponding positions and then are overlapped or separately irradiated to a set area after passing through the combined optical lens, so that the lighting device applying the combined optical lens has different lighting area switching functions, and meanwhile, the structure of the lighting device can be ensured to be simpler and more compact.
Drawings
FIG. 1 is a schematic view of light passing through the combined optical lens in one embodiment of the invention;
FIG. 2 is a schematic diagram of another view of the embodiment of FIG. 1;
FIG. 3 is a schematic view of the structure of an embodiment of the present invention from the light-emitting surface;
Fig. 4 is a schematic structural view of another embodiment of the present invention from the light-emitting surface perspective.
Wherein: the combined optical lens 10, the light-emitting surface 11, the incident surface 12, the first light-emitting surface 121, the second light-emitting surface 122, the third light-emitting surface 123, the fourth light-emitting surface 124, the first focus 110, the second focus 120 and the third focus 130.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-4, a combined optical lens 10 with multiple focal lengths includes a light-emitting surface 11 and an incident surface 12, where the light-emitting surface 11 includes at least two light-emitting surface areas, and a focal point corresponding to each light-emitting surface area is on the same optical axis; the light-emitting areas are spliced into a complete light-emitting surface 11, and a splice between each light-emitting area and the adjacent light-emitting area, namely, a position shown by a broken line in fig. 3 and 4, is integrally formed, if the light-emitting surfaces 11 are completely fused to form a whole, the light-emitting surface 11 at the splice is of a smooth transition surface structure; the light-emitting surface 11 is an integrally formed aspheric-like structure, and is specifically a smooth and complete curved surface, the incident surface 12 is a planar structure, and the combined optical lens is integrally in a plano-convex lens structure.
As shown in fig. 2, the projection profile of the light-emitting surface 11 on the plane perpendicular to the optical axis is circular, and includes a first light-emitting surface 121, a second light-emitting surface 122, and a third light-emitting surface 123, where the first light-emitting surface 121 and the second light-emitting surface 122 are spliced to form a half area of the light-emitting surface 11, and the third light-emitting surface 123 is spliced to form the other half area of the light-emitting surface 11, and the other half area is spliced to the first light-emitting surface 121 and the second light-emitting surface 122; the focal point corresponding to the first light emitting area 121 is a first focal point 110, the focal point corresponding to the second light emitting area 122 is a second focal point 120, and the focal point corresponding to the third light emitting area 123 is a third focal point 130; the first focus 110, the second focus 120, and the third focus 130 are on the same optical axis.
When the light-emitting surface 11 of the combined optical lens 10 is composed of three light-emitting surface areas, the first light-emitting surface area 121 and the second light-emitting surface area 122 are located on one side of the upper semicircle of the combined optical lens 10, so that the light projected from the first focal point 110 and the second focal point 120 to the incident surface 12 can be overlapped, so as to improve the illumination brightness of a designated illumination area, and the brightness of the illumination area can be adjusted; the third light emitting area 123 is located at one side of the lower semicircle of the combined optical lens 10, and the focal point thereof may or may not coincide with the two focal positions; the light rays of the three light emitting areas can be overlapped as required, so that the brightness in the lighting area can be adjusted at more levels.
As shown in fig. 4, the light-emitting surface 11 is circular, and includes a first light-emitting surface 121, a second light-emitting surface 122, a third light-emitting surface 123 and a fourth light-emitting surface 124, wherein the first light-emitting surface 121 and the second light-emitting surface 122 are spliced to form a semicircle of the light-emitting surface 11, and the third light-emitting surface 123 and the fourth light-emitting surface 124 are spliced to form another semicircle of the light-emitting surface 11; the focal point corresponding to the first light emitting area 121 is a first focal point 110, the focal point corresponding to the second light emitting area 122 is a second focal point 120, the focal point corresponding to the third light emitting area 123 is a third focal point 130, and the focal point corresponding to the fourth light emitting area 124 is a fourth focal point; the first focus 110, the second focus 120, the third focus 130 and the fourth focus are on the same optical axis.
When the light-emitting surface 11 of the combined optical lens 10 is composed of four light-emitting surface areas, the first light-emitting surface area 121 and the second light-emitting surface area 122 are located on one side of the upper semicircle of the combined optical lens 10, so that the light projected onto the light-emitting surface 11 from the first focal point 110 and the second focal point 120 can be overlapped, so as to improve the illumination brightness of a designated illumination area, and the brightness of the illumination area can be adjusted; the third light-emitting area 123 and the fourth light-emitting area 124 are located on one side of the lower semicircle of the combined optical lens 10, and the focal points thereof may or may not coincide with the two focal positions; the light rays of the four light emitting areas can be overlapped as required, so that the brightness in the illumination area can be adjusted at more levels; and the illumination areas of the light rays of the third light-emitting area 123 and the fourth light-emitting area 124 are different from those of the light rays of the two light-emitting areas, so that the effects of switching the illumination areas and adjusting the brightness can be achieved.
The combined optical lens 10 with various focal lengths is made of plastic, PMMA, glass optical silica gel and/or PC. Because the combined optical lens 10 is required to be integrally formed, and has high requirement on the integrity, the combined optical lens is made of only one material, and the thickness and uniformity of the incident surface 12 are relatively low although the basic effect requirement can be met; therefore, in order to further improve the obvious switching between the illumination area and the illumination brightness, it is preferable to use a plurality of different materials to manufacture each light emitting area, and then combine each light emitting area into a whole, so as to ensure that the thickness of the incident surface 12 and the light emitting surface 11 of the combined optical lens 10 is uniform.
The distance between the individual focal spots is 1mm-50mm. Because the light-emitting surface 11 and the incident surface 12 of the combined optical lens 10 are integrally and smoothly transited, that is, the thicknesses of the light-emitting areas are not particularly obvious even if the thicknesses of the light-emitting areas are different, the focal positions of the combined optical lens 10 are more concentrated, and the distances between the focal points corresponding to the light rays of different illumination areas are more approximate; in this embodiment, an optimal numerical range is provided that can ensure that the lighting device is more compact and that does not affect the distance between different focuses of the actual application effect of the combined optical lens 10.
The invention provides a combined optical lens 10 with multiple focal lengths, which is formed by fusing light emergent surface areas with multiple different focal lengths into a whole, wherein a light emergent surface 11 of the combined optical lens 10 is of a complete sphere-like structure, and an incident surface 12 is fused into a complete plane area; different light rays are projected to the focal points of the corresponding positions and then are overlapped or separately irradiated to the set areas after passing through the combined optical lens 10, so that the lighting device applying the combined optical lens 10 has different lighting area switching functions, and meanwhile, the structure of the lighting device can be ensured to be simpler and more compact, in addition, as the light emitting surface 11 and the incident surface 12 of the combined optical lens 10 are of an integral structure, no splice gap exists, the light rays cannot have the blurring of lighting edges due to repeated reflection during overlapping, the phenomenon of serious interference and loss among the light rays in different light emitting surfaces is avoided, and the light utilization rate and the lighting effect are greatly improved.
The technical principle of the present invention is described above in connection with the specific embodiments. The description is made for the purpose of illustrating the general principles of the invention and should not be taken in any way as limiting the scope of the invention. Other embodiments of the invention will be apparent to those skilled in the art from consideration of this specification without undue burden.
Claims (1)
1. A combination optical lens with multiple focal lengths, comprising a light emitting surface and an incident surface, characterized in that: the light-emitting surface comprises at least two light-emitting surface areas, and focuses corresponding to the light-emitting surface areas are positioned on the same optical axis; the light-emitting areas are spliced into a complete light-emitting surface, and the spliced part between each light-emitting area and the adjacent light-emitting area is integrally formed and completely fused, and the light-emitting surface at the spliced part is of a smooth transition surface structure; the light emergent surface is of an integrally formed aspheric-like structure, and the incident surface is of a planar structure;
the light-emitting surface comprises a first light-emitting surface area, a second light-emitting surface area and a third light-emitting surface area, the first light-emitting surface area and the second light-emitting surface area are spliced to form a half area of the light-emitting surface, and the third light-emitting surface area is the other half area; the focal point corresponding to the first light emitting area is a first focal point, the focal point corresponding to the second light emitting area is a second focal point, and the focal point corresponding to the third light emitting area is a third focal point; the first focus, the second focus and the third focus are positioned on the same optical axis, and the first focus and the second focus are overlapped;
Or the light-emitting surface comprises a first light-emitting surface area, a second light-emitting surface area, a third light-emitting surface area and a fourth light-emitting surface area, the first light-emitting surface area and the second light-emitting surface area are spliced to form a half area of the light-emitting surface, and the third light-emitting surface area and the fourth light-emitting surface area are spliced to form the other half area of the light-emitting surface; the focal point corresponding to the first light emitting area is a first focal point, the focal point corresponding to the second light emitting area is a second focal point, the focal point corresponding to the third light emitting area is a third focal point, and the focal point corresponding to the fourth light emitting area is a fourth focal point; the first focus, the second focus, the third focus and the fourth focus are positioned on the same optical axis, the first focus is overlapped with the second focus, and the third focus is overlapped with the fourth focus;
Adopting a plurality of different materials to respectively manufacture each light-emitting surface area, and then fusing each light-emitting surface area into a whole, so as to ensure that the thickness of the incident surface and the whole light-emitting surface of the combined optical lens is uniform, and the combined optical lens is made of two or more materials of plastic, PMMA, glass, optical silica gel and PC;
The distance between the non-coincident foci is 1mm-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504781.0A CN110160009B (en) | 2019-06-12 | 2019-06-12 | Combined optical lens with multiple focal lengths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910504781.0A CN110160009B (en) | 2019-06-12 | 2019-06-12 | Combined optical lens with multiple focal lengths |
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| Publication Number | Publication Date |
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| CN110160009A CN110160009A (en) | 2019-08-23 |
| CN110160009B true CN110160009B (en) | 2024-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910504781.0A Active CN110160009B (en) | 2019-06-12 | 2019-06-12 | Combined optical lens with multiple focal lengths |
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| Country | Link |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004062913A1 (en) * | 2004-12-22 | 2006-07-06 | Schott Ag | Lens for e.g. poly ellipsoid headlight, of motor vehicle, has upper and lower regions with different focal lengths and different curvatures, where focal length of lower region is larger than focal length of upper region at specific factor |
| CN108644739A (en) * | 2018-04-24 | 2018-10-12 | 广州市佛达信号设备有限公司 | A kind of distance-light multi-focus lens and module |
| CN210035370U (en) * | 2019-06-12 | 2020-02-07 | 佛山市升阳光学科技有限公司 | Combined optical lens with multiple focal lengths |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10119637A (en) * | 1996-10-14 | 1998-05-12 | Koito Mfg Co Ltd | Projection-type head lamp for vehicle |
| CN202207401U (en) * | 2011-08-10 | 2012-05-02 | 许光荣 | Large area optical care device |
| CN106813176A (en) * | 2015-11-27 | 2017-06-09 | 欧司朗有限公司 | A kind of headlight |
| TWI627369B (en) * | 2016-04-01 | 2018-06-21 | 世正光電股份有限公司 | Light module and light distributing method thereof, and vehicle lamp device |
-
2019
- 2019-06-12 CN CN201910504781.0A patent/CN110160009B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004062913A1 (en) * | 2004-12-22 | 2006-07-06 | Schott Ag | Lens for e.g. poly ellipsoid headlight, of motor vehicle, has upper and lower regions with different focal lengths and different curvatures, where focal length of lower region is larger than focal length of upper region at specific factor |
| CN108644739A (en) * | 2018-04-24 | 2018-10-12 | 广州市佛达信号设备有限公司 | A kind of distance-light multi-focus lens and module |
| CN210035370U (en) * | 2019-06-12 | 2020-02-07 | 佛山市升阳光学科技有限公司 | Combined optical lens with multiple focal lengths |
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| Publication number | Publication date |
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| CN110160009A (en) | 2019-08-23 |
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