CN203453990U - Fresnel lens and device for realizing narrow light output of non-point light source - Google Patents
Fresnel lens and device for realizing narrow light output of non-point light source Download PDFInfo
- Publication number
- CN203453990U CN203453990U CN201320605438.3U CN201320605438U CN203453990U CN 203453990 U CN203453990 U CN 203453990U CN 201320605438 U CN201320605438 U CN 201320605438U CN 203453990 U CN203453990 U CN 203453990U
- Authority
- CN
- China
- Prior art keywords
- light
- fresnel lenses
- incidence
- plane
- lens body
- 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.)
- Withdrawn - After Issue
Links
Images
Abstract
The utility model relates to a Fresnel lens which comprises a lens body and has the improvements that the lens body is provided with an accommodating cavity, the bottom surface of the accommodating cavity is an incident surface, the outer surface, which is opposite to the incident surface, of the lens body is an emergent surface, the incident surface is provided with a center circular groove and a plurality of concentric annular tooth sockets, the bottom surface of the center circular groove is a spherical surface, each annular tooth socket comprises a first surface vertical to the incident surface and a second surface intersecting with the first surface, an acute angle is formed by intersecting the first surface and the second surface, and the emergent surface is a spherical surface. The utility model further provides a device for realizing the narrow light output of a non-point light source on the basis of the Fresnel lens. The device comprises the non-point light source, the Fresnel lens and a reflection cup. According to the device, a small-angle light-emitting effect is realized, and the jetted light beam is enabled to be narrower.
Description
Technical field
The utility model relates to the optical technical field of the narrow light output based on non-spot light, particularly a kind of Fresnel Lenses and realize the device of the narrow light output of non-spot light.
Background technology
In current optical design, undersized single LEDs particularly, can be using light source model as desirable light source, i.e. " spot light is approximate ", when minimum range much smaller than it to reflection or refracting interface of the size of light source, can be by the idealized size of ignoring it of light source.Array LED is to be also similar to design by single LEDs is carried out to spot light.Spot light scioptics, reflector or both combinations, can meet certain low-angle bright dipping requirement, realizes and need required light distribution characteristic, rising angle, light spot shape and illumination requirement etc.
And COB light source etc., encapsulation characteristic due to integrated optical source COB, surface source luminescence, size is larger, when carrying out optical design, can not ignore with the reflection of lens or reflector or the distance of refracting interface, can not be as spot light approximate processing, so be difficult to accomplish very little lighting angle (especially below 10 °), numerous optical engineers are finding at present multiple division and are going to address the above problem.
Utility model content
Main purpose of the present utility model is, for above-mentioned deficiency of the prior art, a kind of Fresnel Lenses is provided and realizes the device that the narrow light of non-spot light is exported.
The technical scheme that the utility model solution prior art problem adopts is: a kind of Fresnel Lenses, it comprises lens body, its improvement is: described lens body has a container cavity, the bottom surface of described container cavity is the plane of incidence, the lens body outer surface relative with the described plane of incidence is exit facet, the described plane of incidence is provided with a center circular groove and a plurality of concentric ring-type teeth groove, the bottom surface of described center circular groove is sphere, described ring-type teeth groove comprises a first surface perpendicular to the plane of incidence and one and the crossing second surface of described first surface, and described first surface and second surface intersect acute angle, described exit facet is sphere.
Preferably, in described ring-type teeth groove, the closer to the ring slot at plane of incidence center, the acute angle that its first surface and second surface form is larger.
Preferably, described lens body bottom is also provided with the convex edge that a circle protrudes to surrounding.
Preferably, described acute angle is descending, is followed successively by 61 °, 55 °, 50 °, 43 °, 41 °, 39 °, 36 °, 33 °.
Preferably, the radius of curvature of described exit facet is 10-15mm, and the radius of curvature of described center circle groove bottom is 4-6.5mm, and the height of lens body is 10-13mm, and the diameter of described container cavity is 19-22mm.
The utility model also provides a kind of and has realized the narrow light output arrangement of non-spot light based on Fresnel Lenses, and it comprises
Non-spot light;
Fresnel Lenses, be installed on described non-spot light, this Fresnel Lenses comprises the lens body with a container cavity, the bottom surface of described container cavity is the plane of incidence, the lens body outer surface relative with the described plane of incidence is exit facet, the described plane of incidence is provided with a center circular groove and a plurality of concentric ring-type teeth groove, the bottom surface of described center circular groove is sphere, described ring-type teeth groove comprises a first surface perpendicular to the plane of incidence and one and the crossing second surface of described first surface, and described first surface and second surface intersect acute angle, described exit facet and be sphere;
Reflector, there is a light inlet, a light-emitting window and and using the arc curve reflective inner surface that rotation obtains as bus, the light inlet of this reflector is located on described Fresnel Lenses, so that the light penetrating through exit facet on Fresnel Lenses penetrates from light-emitting window after described reflective internal surface reflection.
Preferably, in described ring-type teeth groove, the closer to the ring slot at plane of incidence center, the acute angle that its first surface and second surface form is larger.
Preferably, described lens body bottom is also provided with the convex edge that a circle protrudes to surrounding, the light inlet butt of described convex edge and described reflector.
Preferably, described acute angle is descending, is followed successively by 61 °, 55 °, 50 °, 43 °, 41 °, 39 °, 36 °, 33 °.
Preferably, the radius of curvature of described exit facet is 10-15mm, and the radius of curvature of described center circle groove bottom is 4-6.5mm, and the height of lens body is 10-13mm, and the diameter of described container cavity is 19-22mm.
The beneficial effects of the utility model are: the Fresnel Lenses that the utility model provides, at light after the plane of incidence is injected, first surface and second surface at each different annular groove are refracted to exit facet, and exit facet is sphere, so, light forms the light of collimation after this sphere reflects again, so, has realized low-angle and has gone out light effect, what the utility model provided realizes the narrow light output arrangement of non-spot light based on Fresnel Lenses, utilize the principle of above-mentioned Fresnel Lenses, exit facet (sphere) at light through Fresnel Lenses, after birefringence, light beyond half-intensity beam angle is again by the reflective internal surface reflection of reflector, finally by light-emitting window, penetrated, due to reflective internal surface reflection effect, this part light (light beyond half-intensity beam angle) is drawn close to the optical axis of Fresnel Lenses after reflection, make most of light-ray condensing in center, to reduce lighting angle, guarantee that the light beam penetrating is narrower.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model embodiment mono-Fresnel Lenses;
Fig. 2 is the cutaway view of the utility model embodiment mono-Fresnel Lenses;
Fig. 3 is that the utility model embodiment bis-realizes the cutaway view of the narrow light output arrangement of non-spot light based on Fresnel Lenses;
Fig. 4 is the distribution curve flux of the utility model embodiment bis-reflectors;
The realization of the utility model object, functional characteristics and advantage, in connection with embodiment, are described further with reference to accompanying drawing.
The specific embodiment
Below with reference to drawings and the specific embodiments, describe the technical solution of the utility model in detail, so as clearer, understand utility model essence of the present utility model intuitively.
Shown in Fig. 2, the present embodiment provides a kind of Fresnel Lenses 10, it comprises lens body, described lens body has a container cavity, this container cavity is mainly in order to install light source, the bottom surface of described container cavity is the plane of incidence 102, and the lens body outer surface relative with the described plane of incidence 102 is exit facet 101.When light source is installed in container cavity, the light beam that light source sends, enters Fresnel Lenses 10 by the plane of incidence 102 bottom container cavity, and is penetrated by exit facet 101.
The plane of incidence 102 is provided with a center circular groove 1024 and a plurality of concentric ring-type teeth groove, the bottom surface of described center circular groove 1024 is sphere 1023, this sphere 1023 protrudes downwards, be positioned at the center of Fresnel Lenses 10, light source sends vertical light and directly by this sphere 1023, is injected, under the refraction of this sphere 1023, can be by this part vertical optical axis that is gathered in lens, the light that 1023 pairs of light source centers of this sphere send plays optically focused effect; And ring-type teeth groove comprises a first surface 1021 perpendicular to the plane of incidence 102 and one and the crossing second surface 1022 of described first surface 1021, and described first surface 1021 intersects acute angle with second surface 1022, second surface 1022 is near the optical axis of Fresnel Lenses 10, and first surface 1021 is away from the optical axis of Fresnel Lenses 10, the light of incident reflects at first surface 1021 and second surface 1022, and the light after refraction is drawn close to the optical axis of lens.
On the above-mentioned plane of incidence 102, the first surface 1021 of each ring slot is not identical with the formed acute angle angle of second surface 1022, ring slot the closer to lens axis center, its first surface 1021 is larger with the acute angle that second surface 1022 forms, can, by adjusting the angle of acute angle between first surface 1021 and second surface 1022, can realize the adjustment to Fresnel Lenses 10 focal lengths.
In the present embodiment, ring slot has 8, and the preferred acute angle of each ring slot is descending, is followed successively by 61 °, 55 °, 50 °, 43 °, 41 °, 39 °, 36 °, 33 °, the radius of curvature of exit facet 101 is 10-15mm, be preferably 12mm, the radius of curvature of circular groove 1024 bottom surfaces, described center is 4-6.5mm, is preferably 5mm, the height of lens body is 10-13mm, be preferably 11.8mm, the diameter of described container cavity is 19-22mm, is preferably 20.11mm.
In addition, the installation for the ease of Fresnel Lenses 10 in concrete application process, in lens body bottom be also provided with that ，Gai convex edge, convex edge that a circle protrudes to surrounding is convenient to and light source between installation.
To sum up, due to Fresnel Lenses 10 of the present utility model, there is good spotlight effect, and for non-spot light 20, realize comparatively difficulty of its smaller angle bright dipping, therefore, Fresnel Lenses 10 of the present utility model can be used for non-spot light 20(as COB light source) to realize smaller angle bright dipping.
Shown in Fig. 3, the present embodiment is to utilize that above-mentioned Fresnel Lenses 10 solves smaller angle bright dippings and provide a kind of and realize the narrow light output arrangement of non-spot light 20 based on Fresnel Lenses 10, this device comprises non-spot light 20, Fresnel Lenses 10 and reflector 30, non-spot light 20 can be COB light source etc.
Fresnel Lenses 10 is installed on described non-spot light 20, the concrete structure of this Fresnel Lenses 10 is referring to Fig. 1 to Fig. 2, comprise the lens body with a container cavity, the bottom surface of described container cavity is the plane of incidence 102, and the lens body outer surface relative with the described plane of incidence 102 is exit facet 101.When light source is installed in container cavity, the light beam that light source sends, enters Fresnel Lenses 10 by the plane of incidence 102 bottom container cavity, and is penetrated by exit facet 101.The plane of incidence 102 is provided with a center circular groove 1024 and a plurality of concentric ring-type teeth groove, the bottom surface of described center circular groove 1024 is sphere, this sphere protrudes downwards, be positioned at the center of Fresnel Lenses 10, light source sends vertical light and directly by this sphere, is injected, under the refraction of this sphere, can be by this part vertical optical axis that is gathered in lens, the light that this sphere sends light source center plays optically focused effect; And ring-type teeth groove comprises a first surface 1021 perpendicular to the plane of incidence 102 and one and the crossing second surface 1022 of described first surface 1021, and described first surface 1021 intersects acute angle with second surface 1022, second surface 1022 is near the optical axis of Fresnel Lenses 10, and first surface 1021 is away from the optical axis of Fresnel Lenses 10, the light of incident reflects at first surface 1021 and second surface 1022, and the light after refraction is drawn close to the optical axis of lens.Exit facet 101 is sphere, this sphere is protruding upward, the center of this sphere and the optical axis coincidence of lens, light after the first surface 1021 on the plane of incidence 102 and second surface 1022 refractions enters exit facet 101, and because exit facet 101 is sphere, therefore, this enters the light of exit facet 101, on exit facet 101, there is birefringence, form the light of collimation, the optical axis of this light and lens is parallel or be a less angle, and its concrete structure and principle are identical with embodiment mono-, at this, are not described in detail.
On the above-mentioned plane of incidence 102, the first surface 1021 of each ring slot is not identical with the formed acute angle angle of second surface 1022, ring slot the closer to lens axis center, its first surface 1021 is larger with the acute angle that second surface 1022 forms, can, by adjusting the angle of acute angle between first surface 1021 and second surface 1022, can realize the adjustment to Fresnel Lenses 10 focal lengths.Ring slot has 8, the preferred acute angle of each ring slot is descending, be followed successively by 61 °, 55 °, 50 °, 43 °, 41 °, 39 °, 36 °, 33 °, the radius of curvature of exit facet 101 is 10-15mm, is preferably 12mm, the radius of curvature of circular groove 1024 bottom surfaces, described center is 4-6.5mm, be preferably 5mm, the height of lens body is 10-13mm, is preferably 11.8mm, the diameter of described container cavity is 19-22mm, is preferably 20.11mm.In addition,, for the ease of the installation of Fresnel Lenses 10, in lens body bottom, be also provided with the convex edge that a circle protrudes to surrounding, light inlet 302 butts of described convex edge and described reflector 30.
By adjusting the final light beam of curvature capable of regulating of arc curve of reflective inner surface and the angle of optical axis, as shown in Figure 4, for the distribution curve flux of reflector in the present embodiment 30, under this distribution curve flux, within light-emitting window 301 light angles of reflector 30 can narrow down to 10 degree.
To sum up, what the present embodiment provided realizes the narrow light output arrangement of non-spot light 20 based on Fresnel Lenses 10, utilize the principle of above-mentioned Fresnel Lenses 10, exit facet 101(sphere at light through Fresnel Lenses 10), after birefringence, light beyond half-intensity beam angle is again by the reflective internal surface reflection of reflector 30, finally by light-emitting window 301, penetrated, due to reflective internal surface reflection effect, this part light (light beyond half-intensity beam angle) is drawn close to the optical axis of Fresnel Lenses 10 after reflection, make most of light-ray condensing in center, to reduce lighting angle, guarantee that the light beam penetrating is narrower.
The foregoing is only preferred embodiment of the present utility model; not thereby limit its scope of the claims; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description and accompanying drawing content to do; directly or indirectly be used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. a Fresnel Lenses, it comprises lens body, it is characterized in that: described lens body has a container cavity, the bottom surface of described container cavity is the plane of incidence, the lens body outer surface relative with the described plane of incidence is exit facet, the described plane of incidence is provided with a center circular groove and a plurality of concentric ring-type teeth groove, the bottom surface of described center circular groove is sphere, described ring-type teeth groove comprises a first surface perpendicular to the plane of incidence and one and the crossing second surface of described first surface, and described first surface and second surface intersect acute angle, described exit facet is sphere.
2. Fresnel Lenses according to claim 1, is characterized in that: in described ring-type teeth groove, the closer to the ring slot at plane of incidence center, the acute angle that described first surface and second surface form is larger.
3. Fresnel Lenses according to claim 1, is characterized in that: described lens body bottom is also provided with the convex edge that a circle protrudes to surrounding.
4. Fresnel Lenses according to claim 2, is characterized in that: described acute angle is descending, is followed successively by 61 °, 55 °, 50 °, 43 °, 41 °, 39 °, 36 °, 33 °.
5. according to the Fresnel Lenses described in claim 1 or 4, it is characterized in that: the radius of curvature of described exit facet is 10-15mm, the radius of curvature of described center circle groove bottom is 4-6.5mm, and the height of lens body is 10-13mm, and the diameter of described container cavity is 19-22mm.
6. based on Fresnel Lenses, realize the narrow light output arrangement of non-spot light, it is characterized in that: it comprises
Non-spot light;
Fresnel Lenses, be installed on described non-spot light, this Fresnel Lenses comprises the lens body with a container cavity, the bottom surface of described container cavity is the plane of incidence, the lens body outer surface relative with the described plane of incidence is exit facet, the described plane of incidence is provided with a center circular groove and a plurality of concentric ring-type teeth groove, the bottom surface of described center circular groove is sphere, described ring-type teeth groove comprises a first surface perpendicular to the plane of incidence and one and the crossing second surface of described first surface, and described first surface and second surface intersect acute angle, described exit facet is sphere;
Reflector, there is a light inlet, a light-emitting window and and using the arc curve reflective inner surface that rotation obtains as bus, the light inlet of this reflector is located on described Fresnel Lenses, so that the light penetrating through exit facet on Fresnel Lenses penetrates from light-emitting window after described reflective internal surface reflection.
7. according to claim 6ly based on Fresnel Lenses, realize the narrow light output arrangement of non-spot light, it is characterized in that: in described ring-type teeth groove, the closer to the ring slot at plane of incidence center, the acute angle that its first surface and second surface form is larger.
8. according to claim 6ly based on Fresnel Lenses, realize the narrow light output arrangement of non-spot light, it is characterized in that: described lens body bottom is also provided with the convex edge that a circle protrudes to surrounding, the light inlet butt of described convex edge and described reflector.
9. according to claim 7ly based on Fresnel Lenses, realize the narrow light output arrangement of non-spot light, it is characterized in that: described acute angle is descending, be followed successively by 61 °, 55 °, 50 °, 43 °, 41 °, 39 °, 36 °, 33 °.
10. according to realizing the narrow light output arrangement of non-spot light based on Fresnel Lenses described in claim 6 or 9, it is characterized in that: the radius of curvature of described exit facet is 10-15mm, the radius of curvature of described center circle groove bottom is 4-6.5mm, the height of lens body is 10-13mm, and the diameter of described container cavity is 19-22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605438.3U CN203453990U (en) | 2013-09-29 | 2013-09-29 | Fresnel lens and device for realizing narrow light output of non-point light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320605438.3U CN203453990U (en) | 2013-09-29 | 2013-09-29 | Fresnel lens and device for realizing narrow light output of non-point light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453990U true CN203453990U (en) | 2014-02-26 |
Family
ID=50133862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320605438.3U Withdrawn - After Issue CN203453990U (en) | 2013-09-29 | 2013-09-29 | Fresnel lens and device for realizing narrow light output of non-point light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486537A (en) * | 2013-09-29 | 2014-01-01 | 深圳市绿色半导体照明有限公司 | Fresnel lens and device for achieving narrow light emitting of non-point-light-source |
| CN106784267A (en) * | 2015-11-24 | 2017-05-31 | 三星电子株式会社 | Light-emitting device |
-
2013
- 2013-09-29 CN CN201320605438.3U patent/CN203453990U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486537A (en) * | 2013-09-29 | 2014-01-01 | 深圳市绿色半导体照明有限公司 | Fresnel lens and device for achieving narrow light emitting of non-point-light-source |
| CN103486537B (en) * | 2013-09-29 | 2016-06-29 | 深圳市绿色半导体照明有限公司 | A kind of Fresnel Lenses and realize non-dots light source narrow light output device |
| CN106784267A (en) * | 2015-11-24 | 2017-05-31 | 三星电子株式会社 | Light-emitting device |
| CN106784267B (en) * | 2015-11-24 | 2019-11-19 | 三星电子株式会社 | Light emitting device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8382328B2 (en) | Lighting device having fully developed lighting effect | |
| CA2750537C (en) | Light source with leds, light guide and reflector | |
| US7976201B2 (en) | Lens body equipped with a light emitting device capable of generating two-side illumination | |
| US20100073938A1 (en) | Two-side asymmetric light-shift illuminating lens body | |
| CN201281290Y (en) | Both-side illuminating optical lens | |
| TW201621220A (en) | Light condensing lens and lamp used the same | |
| EP3273144B1 (en) | Led spotlight | |
| CN102748707A (en) | Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens | |
| CN103277740A (en) | Optical lens for light-emitting diode (LED) lamp | |
| CN203082800U (en) | Light-emitting diode (LED) combined collecting lens | |
| CN203453990U (en) | Fresnel lens and device for realizing narrow light output of non-point light source | |
| CN103486537B (en) | A kind of Fresnel Lenses and realize non-dots light source narrow light output device | |
| CN202017920U (en) | Light emitting diode (LED) spotlight with wide illumination range and lamp | |
| CN102901039B (en) | Flood total-reflection lens and LED lamp with same | |
| CN102748709B (en) | Full-reflection lens and LED (Light-Emitting Diode) lamp using same | |
| CN102654271B (en) | LED (light emitting diode) condenser lens | |
| CN105402656B (en) | LED spotlight structure | |
| CN209762945U (en) | Composite light condensing device | |
| CN202938240U (en) | Novel reflector for light-emitting diode (LED) spotlight | |
| CN102901040B (en) | Small LED lens and LED lamp with same | |
| CN102759066B (en) | LED (light-emitting diode) flooding total-reflection lens and LED lamp using same | |
| CN207006050U (en) | A kind of collimated illumination reflector and collimated illumination system for LIF | |
| CN201053630Y (en) | LED array parallel light condensation device | |
| CN102901037B (en) | Floodlight lens and LED (light-emitting diode) lamp with same | |
| CN204986678U (en) | LED spotlight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140226 Effective date of abandoning: 20160629 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |