CN210800738U - Optical element and lamp with same - Google Patents
Optical element and lamp with same Download PDFInfo
- Publication number
- CN210800738U CN210800738U CN201920927724.9U CN201920927724U CN210800738U CN 210800738 U CN210800738 U CN 210800738U CN 201920927724 U CN201920927724 U CN 201920927724U CN 210800738 U CN210800738 U CN 210800738U
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- optical element
- angle
- total reflection
- 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
Images
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The utility model discloses an optical element, including the optical lens of at least one bar, on perpendicular length direction's cross-section, optical lens includes: the light source setting part is provided with a central shaft for setting the light source; the first light incidence surface is arranged facing the light source arrangement position, and the incident light rays comprise small-angle light rays and large-angle light rays; the two total reflection surfaces are respectively arranged on two sides of the central shaft, one ends of the two total reflection surfaces, which are close to the light source arrangement position, are close to each other, are arranged on one side opposite to the first light incidence surface, and are used for reflecting a first part of small-angle light far away from the central shaft to a large-angle light direction; the first light emergent surface is arranged between the two total reflection surfaces and is used for emitting a second part of small-angle light rays close to the normal; two second light exit surfaces respectively disposed at both sides of the central axis and between the total reflection surface and the first light incident surface.
Description
Technical Field
The utility model relates to the technical field of lighting technology, especially an optical element and have this optical element's lamps and lanterns.
Background
With the popularization of LED lamps, more and more occasions begin to use LED lamps, such as home lighting in bedrooms, kitchens, living rooms and the like, and commercial lighting in refrigerators, cold chains, shelves and the like.
The LED chip is a point light source, and the light intensity distribution is fixed, but in actual use, it needs to focus or illuminate uniformly in a large area.
With the development of lighting technology, new requirements are also provided, such as miniaturization of the volume and requirement of uniform illumination of a large area, and at this time, the existing lamp cannot meet the requirements.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an optical element and a lamp with the optical element to solve the above technical problems.
An optical element comprising at least one optical lens in the form of a strip, said optical lens comprising, in a cross-section perpendicular to the length direction:
the light source setting part is provided with a central shaft for setting the light source;
the first light incidence surface is arranged facing the light source arrangement position, and the incident light rays comprise small-angle light rays and large-angle light rays;
the two total reflection surfaces are respectively arranged on two sides of the central shaft, one ends of the two total reflection surfaces, which are close to the light source arrangement position, are close to each other, are arranged on one side opposite to the first light incidence surface, and are used for reflecting a first part of small-angle light far away from the central shaft to a large-angle light direction;
the first light emergent surface is arranged between the two total reflection surfaces and is used for emitting a second part of small-angle light rays close to the normal;
and the two second light emergent surfaces are respectively arranged on two sides of the central shaft and positioned between the total reflection surface and the first light incident surface and are used for emitting large-angle light rays and reflected light from the total reflection surface.
In order to converge the small-angle light rays to the total reflection surface and the first light exit surface, it is preferable that the light incident surface includes:
the small-angle light incidence surface is a convex lens surface arranged in the middle;
the two large-angle light incidence surfaces are plane mirror surfaces arranged on two sides.
To facilitate control of light emission, preferably, the second light exit surface comprises:
the large-angle light ray outgoing surface is arranged on one side close to the light source arrangement position;
and the reflected light ray emergent surface is arranged on one side far away from the light source.
In order to make the light exit angle of the first light exit surface larger, it is preferable that the optical element further includes a strip-shaped lamp cover disposed outside the optical lens, and the strip-shaped lamp cover has a lens structure that diffuses light from the first light exit surface in a middle portion in a cross section perpendicular to the longitudinal direction.
For ease of manufacture and installation, it is preferred that the lens structure is a diffusion lens that is progressively thicker from the central axis to both sides.
In order to obtain a better light emitting effect and realize a linear light source, it is preferable that the optical element further includes a light diffusion film stretching the light source along a length direction of the optical lens.
For convenience of manufacture and installation, it is preferable that the light diffusion film is disposed between the optical lens and the light diffusion film.
A lamp comprises a lamp holder, a printed circuit board, a light source and the optical element, wherein the light source is arranged at the position where the light source is arranged.
In order to obtain a better light emitting effect, it is preferable that the light source is provided in plurality and arranged at intervals along the length direction of the printed circuit board.
Under the background of energy saving and environmental protection, the LED lamp is more and more applied to the fields of household and commercial illumination because of high light emitting efficiency and good light condensing performance, and preferably, the light source adopts an LED chip.
The technical effects of the utility model:
the utility model discloses an optical element and have this optical element's lamps and lanterns can realize the even illumination of large tracts of land, guarantee middle zone's luminance simultaneously.
Drawings
Embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the lamp of the present invention.
Fig. 2 is an explosion structure diagram of the lamp of the present invention.
Fig. 3 is a schematic view of a cross-sectional structure of the lamp of the present invention.
Fig. 4 is a schematic view of the light direction of the lamp of the present invention.
Fig. 5 is a schematic structural diagram of an optical lens according to the present invention.
Detailed Description
The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the lamp of the present embodiment includes a lamp holder, a printed circuit board, a light source 200 and an optical element, wherein the lamp holder and the printed circuit board are not the technical points of the present invention, and are not shown in the drawings, and the structure in the prior art can be adopted, and will not be described in detail here.
The optical element is used for adjusting the light-emitting direction and the light-emitting angle of the light source, and comprises at least one strip-shaped optical lens 100, wherein in the section perpendicular to the length direction, the optical lens 100 comprises a light source arrangement part 101, a first light incidence surface 102, two total reflection surfaces 103, a first light exit surface 104 and two second light exit surfaces 105.
The light source installation part 101 is provided with a central shaft 201 for installing the light source 200, and the light source 200 can be used singly or in plurality and arranged at intervals along the length direction of the printed circuit board (also the length direction of the optical lens 100). Under the background of energy conservation and environmental protection, the LED lamp is increasingly applied to the field of household and commercial lighting because of its high light-emitting efficiency and good light-condensing performance, and the light source 200 adopts an LED chip.
The light emitted from the light source 200 is divided into a small-angle light 202 located at the central axis 201 and two sides thereof and a large-angle light 203 located at two sides of the small-angle light 202.
The first light incident surface 102 is disposed facing the light source arrangement 101, and the incident light rays include a small-angle light ray 202 and a large-angle light ray 203.
Two total reflection surfaces 103 are arranged respectively in the both sides of center pin 201 and are close to each other near the one end of light source setting 101 and draw close to each other, all set up in the relative one side of first light incident surface 102 for with in the small-angle light 202, the first part small-angle light 2021 of keeping away from center pin 201 reflects to large-angle light 203 direction, thereby reflects the small-angle light 202 of part to both sides, adjusts light distribution, makes the illumination of illuminating surface more even. The total reflection surface 103 can be formed by splicing a plane, an arc surface or a plurality of planes or arc surfaces, and in this embodiment, the total reflection surface 103 is formed by splicing a plurality of sections of arc surfaces in order to achieve a better light distribution effect.
In order to avoid that the two total reflection surfaces 103 reflect all the small-angle rays 202 to both sides, which would result in the weakening of the light intensity in the middle area of the illuminated surface, the first light exit surface 104 is arranged between the two total reflection surfaces 103 for exiting the second part of the small-angle rays 2022 close to the normal, thereby complementing the illumination brightness in the middle area of the illuminated surface.
The specific data of the first part of small-angle light 2021, the second part of small-angle light 2022 and the large-angle light 203, the distance between the irradiation surface and the optical element, and the sizes of the two total reflection surfaces 103 and the first light emitting surface 104 can be adjusted as required, and the irradiation surface is adjusted to be uniform in illumination.
Two second light exit surfaces 105 are respectively disposed on two sides of the central axis 201 between the total reflection surface 103 and the first light incident surface 102, and are used for exiting the high-angle light ray 203 and the reflected light 1031 from the total reflection surface 103.
The light incident surface 102 includes a low angle light incident surface 1021 and two high angle light incident surfaces 1022. The small-angle light ray incidence surface 1021 is a convex lens surface disposed in the middle, and appears as a concave surface in the optical lens 100 because it is the incidence surface; the two large-angle light incident surfaces 1022 are planar mirror surfaces disposed on two sides, and the concave surface and the planar mirror surfaces on two sides form a strip-shaped groove of an optical structure.
Second light exit surface 105 includes high angle light exit surface 1051 and reflected light exit surface 1052; the large-angle light exit surface 1051 is disposed on the side close to the light source placement 101; the reflected light exit surface 1052 is disposed on a side away from the light source arrangement 101.
The optical element further includes a strip-shaped lamp cover 300 disposed outside the optical lens 100, the strip-shaped lamp cover 300 is generally used for packaging a lamp, and plays roles of decoration and sealing, and for better light distribution, in the present embodiment, in order to improve illumination uniformity, the strip-shaped lamp cover 300 is provided with a lens structure 301 which diffuses light from the first light exit surface 104 in a cross section perpendicular to the longitudinal direction and has a middle portion. The light from the first light exit surface 104 has strong light intensity, the light exit angle of the part of light is increased after diffusion, the light exit uniformity is improved, and when the lamp adopts a lens with a total reflection structure, the middle area still has effective illumination under the condition that the part of light is reflected to two sides from the middle area.
In this embodiment, the lens structure 301 is a diffusion lens gradually thickened from the central axis 201 to both sides.
The optical element further includes a light diffusion film 400 stretching the light source 200 along the length direction of the optical lens 100. The light diffusion film 400 of the present embodiment is disposed between the optical lens 100 and the strip lamp housing 300 for convenience of manufacture and installation.
The light diffusion film 400 is an elliptical light diffusion film, and can be obtained by procurement, and the model used is E-6010, of course, other models can be selected, as long as the light source 200 is stretched in the arrangement direction of the light source 200, such as E-1560, E-0160/6001, and E-0190, and in order to achieve a better stretching diffusion effect, the stretching ratio of the two directions is greater than 4 when the diffusion film is selected.
The elliptical light diffusion film of the present embodiment is a positive cylindrical microlens array, and when in use, the length direction of the positive cylindrical microlens is perpendicular to the arrangement direction of the light sources 200. The strip convex lens array in the form of the film is small in size, convenient to install, capable of being arranged in a bending mode and suitable for different lamp structure requirements.
In order to better fix and mount the light diffusion film 400, specifically, the lens structure 301 includes a platform 3011 protruding downward from the inner side of the strip-shaped lamp cover 300 and an inner concave surface 3012 on the outer side of the strip-shaped lamp cover 300, the outer surface of the platform 3011 is an incident surface 3013, the inner concave surface 3012 is composed of two inclined surfaces 3013 arranged symmetrically, and the inclined surfaces 3013 are arc-shaped surfaces.
In this embodiment, the total reflection surface 103 and the second light exit surface 105 form a triangular protrusion 106, and for convenience of installation, a sharp corner of the protrusion 106 is close to or abuts against the platform 3011 to fix the light diffusion film 400.
In summary, the optical element and the lamp with the optical element of the present embodiment can achieve uniform illumination in a large area, and simultaneously ensure the brightness of the middle area.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (10)
1. An optical element comprising at least one optical lens (100) in the form of a strip, characterized in that, in a cross-section perpendicular to the longitudinal direction, said optical lens (100) comprises:
a light source installation part (101) provided with a central shaft (201) for installing a light source (200);
a first light incident surface (102) arranged to face the light source arrangement (101), the incident light rays comprising small-angle light rays (202) and large-angle light rays (203);
the two total reflection surfaces (103) are respectively arranged on two sides of the central shaft (201), one ends of the two total reflection surfaces, which are close to the light source arrangement position (101), are close to each other and are arranged on one opposite side of the first light incidence surface (102) and are used for reflecting a first part of small-angle light rays (2021) far away from the central shaft (201) to a large-angle light ray (203) direction;
a first light exit surface (104) arranged between the two total reflection surfaces (103) for exiting a second portion of small-angle light rays (2022) close to the normal;
two second light exit surfaces (105) arranged on both sides of the central axis (201) and between the total reflection surface (103) and the first light entrance surface (102), respectively, for exiting high angle light rays (203) and reflected light (1031) from the total reflection surface (103).
2. The optical element according to claim 1, wherein the light incident surface (102) comprises: a small-angle light incident surface (1021) which is a convex lens surface arranged in the middle;
two large-angle light incidence surfaces (1022) are planar mirror surfaces arranged on two sides.
3. The optical element according to claim 1, wherein the second light exit surface (105) comprises:
a large-angle light exit surface (1051) disposed on a side close to the light source arrangement place (101);
a reflected light exit surface (1052) disposed on a side away from the light source arrangement (101).
4. An optical element as claimed in claim 1, characterized in that the optical element further comprises a strip-shaped lamp shade (300) arranged outside the optical lens (100), the strip-shaped lamp shade (300) having, in a cross section perpendicular to the longitudinal direction, a lens structure (301) in the middle part for diffusing light from the first light exit surface (104).
5. An optical element as claimed in claim 4, characterized in that the lens structure (301) is a diffusing lens which is gradually thickened from the central axis (201) to both sides.
6. The optical element of claim 4, further comprising a light diffusing film (400) stretching the light source (200) along the length of the optical lens (100).
7. The optical element according to claim 6, wherein the light diffusing film (400) is disposed between the optical lens (100) and the light diffusing film (400).
8. A luminaire comprising a lamp holder, a printed circuit board and a light source, characterized in that it further comprises an optical element according to any of claims 1 to 7, said light source being arranged at a light source location (101).
9. The luminaire of claim 8, wherein said light source is provided in plurality, spaced apart along a length of said printed circuit board.
10. The lamp according to claim 8 or 9, wherein the light source is an LED chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927724.9U CN210800738U (en) | 2019-06-19 | 2019-06-19 | Optical element and lamp with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920927724.9U CN210800738U (en) | 2019-06-19 | 2019-06-19 | Optical element and lamp with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210800738U true CN210800738U (en) | 2020-06-19 |
Family
ID=71225153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920927724.9U Active CN210800738U (en) | 2019-06-19 | 2019-06-19 | Optical element and lamp with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210800738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285335A (en) * | 2019-06-19 | 2019-09-27 | 赛尔富电子有限公司 | An optical element and a lamp with the optical element |
-
2019
- 2019-06-19 CN CN201920927724.9U patent/CN210800738U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285335A (en) * | 2019-06-19 | 2019-09-27 | 赛尔富电子有限公司 | An optical element and a lamp with the optical element |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11719413B2 (en) | Lighting arrangements for targeted illumination patterns | |
| US8454191B2 (en) | LED lighting device | |
| US11105474B2 (en) | Lamp having an elongated lens with varying reflective properties | |
| US10876708B1 (en) | Optical element and lighting lamp with the same | |
| CN101886765A (en) | LED surface light source device | |
| JP2011091047A (en) | Light source device | |
| US10732342B2 (en) | Indirect luminaire | |
| JP2014116311A (en) | Troffer luminaire system having total internal reflection lens | |
| US8646961B2 (en) | Reflective plate, planar lamp and planar lamp fixture including the same | |
| US20120020077A1 (en) | Led lighting device | |
| CN110285335A (en) | An optical element and a lamp with the optical element | |
| CN210801025U (en) | Optical element and illuminating lamp with same | |
| CN210800738U (en) | Optical element and lamp with same | |
| CN206626458U (en) | Lamps and Lighting Systems | |
| CN117847470B (en) | Indirect lighting device with one-sided light | |
| KR101012331B1 (en) | Ultra Low Power LED Lighting | |
| US7470054B2 (en) | Light-guide board | |
| US20220214489A1 (en) | A light emitting device | |
| US20230400166A1 (en) | Optical Composite and Optical Arrangement for Targeted Illumination Patterns | |
| CN110792957A (en) | Reflection-type anti-dazzle LED lamp | |
| CN216952912U (en) | Lens and bias light distribution lamp | |
| CN211853633U (en) | Lighting lamp | |
| CA2593294C (en) | Light-guide board | |
| WO2021063146A1 (en) | Light distribution assembly and illuminating lamp | |
| CN219414533U (en) | Lighting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |