CN104848167A - Light reflection cup and lamp - Google Patents
Light reflection cup and lamp Download PDFInfo
- Publication number
- CN104848167A CN104848167A CN201510067751.XA CN201510067751A CN104848167A CN 104848167 A CN104848167 A CN 104848167A CN 201510067751 A CN201510067751 A CN 201510067751A CN 104848167 A CN104848167 A CN 104848167A
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- CN
- China
- Prior art keywords
- reflector
- light
- light reflection
- crucial
- reflective
- 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.)
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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
- F21V7/00—Reflectors for light sources
- F21V7/10—Construction
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
Abstract
Provided are a light reflection cup and a lamp. The light reflection cup is of a rotation body structure surrounding one optical axis, a light reflection face is formed on the inner side face of the light reflection cup, the bottom opening of the light reflection cup has a first diameter, the top opening of the light reflection cup has a second diameter, and the second diameter is greater than the first diameter. A light source can be correspondingly installed at the position of a central point of the bottom opening of the light reflection cup. For multiple key light reflection points extending from the bottom of the light reflection cup to the top of the light reflection cup on the light reflection face from low to high, light emitted by the light source is intersected with the optical axis through emergent light reflected out by the key light reflection points to form multiple emergent light included angles, and the emergent light included angles gradually change from bag to small. The light reflection requirement can be well met, and the light reflection cup is convenient to manufacture, and the light-transmitting efficiency of the light reflection cup is higher.
Description
Technical field
The present invention relates to the optical system of light fixture, refer more particularly to a kind of reflector.
Background technology
Current outdoor illumination field, the illuminations that LED derives is more and more general.The demand of user to floodlight is also more and more higher.See Fig. 1 to Fig. 3, traditional paraboloidal reflector 1 and light source 20 match, from the light shape effect shown in Fig. 2, the bore W1 of main spot is much smaller than the bore W2 of floodlight, from the distribution curve flux shown in Fig. 3, emergent light angle is less, cannot meet the demand of user to floodlight.In order to meet the requirement of floodlight, be generally adopt lens, soft light cover or scattering sheet to realize at present.There are some defects in these implementations: soft light cover or scattering sheet belong to external equipment, comparatively large to optical efficiency loss, and the uniformity of floodlight is not high; Lens make comparatively complicated, and the light transmission efficiency of floodlight is not high yet.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, proposes a kind of reflector, easy to make, and the light transmission efficiency of floodlight is higher.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of reflector, it is the rotary structure around an optical axial, the medial surface of this reflector forms a reflective surface, the bottom opening of this reflector has the first diameter, the open top of this reflector has Second bobbin diameter, and this Second bobbin diameter is greater than this first diameter; The central spot of the bottom opening of this reflector may correspond to installing one light source; Wherein, for to follow at the bottom of the cup of this reflector toward cup top from low for the multiple crucial reflective spot that highland extends on this reflective surface, emergent ray the formed multiple emergent light angles crossing with this optical axial that the light that this light source irradiation goes out reflects away via these crucial reflective spots are gradually changed from large toward little.
In certain embodiments, in the light that this light source irradiation goes out, be formed with a maximum direct projection angle via this glass of top direct projection light of going out and this optical axial, this maximum direct projection angle be greater than in these emergent light angles any one.
In certain embodiments, this maximum direct projection angle is greater than 15 degree.
In certain embodiments, these emergent light angles from greatly toward little be until be tending towards 0 degree of change.
In certain embodiments, these crucial reflective spots at least comprise toward high distribution according to from low: one first crucial reflective spot, one second crucial reflective spot, one the 3rd crucial reflective spot and one the 4th crucial reflective spot.
In certain embodiments, these crucial reflective spots of this reflector are connected by smoothing spline curve.
In certain embodiments, this reflector is integrated injection molding.
The technical solution adopted for the present invention to solve the technical problems is still: provide a kind of light fixture, and comprise a reflector as above and install the light source of central spot of bottom opening of this reflector, this light source is LED light source.
Beneficial effect of the present invention is, meet on some crucial reflective spots by making reflector: with reflective spot position from low toward High variation time, emergent light angle is gradually changed from large toward little, can meet the requirement of floodlight well, easy to make, and the light transmission efficiency of floodlight is higher.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the bright dipping schematic diagram that existing a kind of reflector matches with light source.
Fig. 2 is the light shape design sketch that the reflector of Fig. 1 matches with light source.
Fig. 3 is the distribution curve flux figure that the reflector of Fig. 1 matches with light source.
Fig. 4 is the schematic diagram that reflector of the present invention matches with light source.
Fig. 5 is the bright dipping schematic diagram that reflector of the present invention matches with light source.
Fig. 6 is the light shape design sketch that the reflector of Fig. 5 matches with light source.
Fig. 7 is the distribution curve flux figure that the reflector of Fig. 5 matches with light source.
Wherein, description of reference numerals is as follows:
Height D1 first diameter D2 Second bobbin diameter Q maximum direct projection angle Q1 first emergent light angle Q2 second emergent light angle Q3 the 3rd emergent light angle Q4 the 4th emergent light angle of 16 glasss of top 19 optical axial H1 reflectors at the bottom of the crucial reflective spot of 1 reflector 11 first crucial reflective spot 12 second crucial reflective spot 13 the 3rd crucial reflective spot 14 the 4th 15 glasss; 20 light sources.
Detailed description of the invention
Now by reference to the accompanying drawings, preferred embodiment of the present invention is elaborated.
See Fig. 4 to Fig. 7, Fig. 4 is the schematic diagram that reflector of the present invention matches with light source.Fig. 5 is the bright dipping schematic diagram that reflector of the present invention matches with light source.Fig. 6 is the light shape design sketch that the reflector of Fig. 5 matches with light source.Fig. 7 is the distribution curve flux figure that the reflector of Fig. 5 matches with light source.Reflector of the present invention is the rotary structure around an optical axial 19.The medial surface of this reflector 1 forms a reflective surface.The bottom opening of this reflector 1 has the first diameter D1, and the open top of this reflector 1 has Second bobbin diameter D2, and this Second bobbin diameter D2 is greater than this first diameter D1.Height (i.e. vertical interval) at the bottom of the cup of this reflector 1 between 15 and cup top 16 is H.The central spot of the bottom opening of this reflector 1 may correspond to installing one light source 20.In the present embodiment, this reflector 1 is integrated injection molding.
In conjunction with see Fig. 5, for this reflective surface to follow at the bottom of the cup of this reflector 1 15 toward cup top 16 from low for four crucial reflective spots 11,12,13,14 that highland extends, light 201,202,203,204 formed four emergent light angle Q1, Q2, Q3, Q4s crossing with this optical axial 19 that the light that this light source 20 irradiates reflects away via these crucial reflective spots 11,12,13,14 are gradually changed from large toward little.It is worth mentioning that, these emergent light angles Q1, Q2, Q3, Q4 from greatly toward little be until be tending towards 0 degree, that is, the emergent light reflected away through reflective surface can level off to gradually and be parallel to optical axial 19, and can not biased outward scattering.
In conjunction with see Fig. 4, the light 206 of going out via this glass of top 16 direct projections in the light that this light source 20 irradiates is formed with a maximum direct projection angle Q with this optical axial 19.Specifically, tanQ=(1/2*D2)/H, and meet Q > 15 °.This maximum direct projection angle Q be greater than in these emergent light angles Q1, Q2, Q3 and Q4 any one.
The method for designing first-selection of reflector 1 of the present invention uses trace-point method to carry out reverse reckoning, namely the maximum direct projection angle Q required for this reflector 1 is first obtained during design, due to the invertibity of light path, extrapolate some the crucial reflective spots 11,12,13,14 in reflector 1, and rim of a cup diameter D2 and the height H of reflector 1 is extrapolated by trigonometric function, finally critical optical point 11,12,13,14 is connected with smoothing spline curve, namely obtains reflector 1.
There is essential distinction with conventional parabola and similar reflector in reflector 1 of the present invention: conventional parabola reflector in design, take focus as core, the light that light source sends reflects through reflective surface, emergent ray all penetrates in the mode parallel with optical axial, and namely the angle of reflection ray and optical axial is zero.Reflection ray, at the light efficiency to the free light directly penetrated by LED light source, does not have an impact.Reflector 1 of the present invention, angle Q1, Q2, Q3 and Q4 of reflection ray 201,202,203,204 and optical axial 19 are minimum can only be approximately 0, there will not be negative angle, namely reflection ray 201,202,203,204 is all crossing with optical axial 19 in theory, along with the reflective spot on reflector 1 is with the increase of light source 20 distance, the reflection ray angle value crossing with optical axial 19 can diminish, until be approximately 0.
See Fig. 6, adopt reflector 1 of the present invention to coordinate with light source 20, main spot and floodlight spot are even transition effect.There is no obvious border and stronger light intensity difference.
See Fig. 7, reflector 1 of the present invention is adopted to coordinate with light source 20, hot spot presents the excessive feature of even gradual change, and there is not significantly strong unfavourable balance, spot intensity diminishes gradually along with the expansion of angle, and present a hot spot, do not have main spot and floodlight spot to occur, hot spot presents good transitionality and gradually changeable.
Beneficial effect of the present invention is, by make reflector 1 on some crucial reflective spots 11,12,13,14 meet: with reflective spot position from low toward High variation time, emergent light angle Q1, Q2, Q3 and Q4 are from gradually changing toward little greatly, the requirement of floodlight can be met well, easy to make, and the light transmission efficiency of floodlight is higher.
Should be understood that, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit, and for a person skilled in the art, can modify to the technical scheme described in above-described embodiment, or carries out equivalent replacement to technical characteristic in the middle part of it; And these amendments and replacement, all should belong to the protection domain of claims of the present invention.
Claims (8)
1. a reflector, it is the rotary structure around an optical axial, and the medial surface of this reflector forms a reflective surface, and the bottom opening of this reflector has the first diameter, the open top of this reflector has Second bobbin diameter, and this Second bobbin diameter is greater than this first diameter; The central spot of the bottom opening of this reflector may correspond to installing one light source; It is characterized in that, for to follow at the bottom of the cup of this reflector toward cup top from low for the multiple crucial reflective spot that highland extends on this reflective surface, emergent ray the formed multiple emergent light angles crossing with this optical axial that the light that this light source irradiation goes out reflects away via these crucial reflective spots are gradually changed from large toward little.
2. reflector according to claim 1, it is characterized in that: in the light that this light source irradiation goes out, be formed with a maximum direct projection angle via this glass of top direct projection light of going out and this optical axial, this maximum direct projection angle be greater than in these emergent light angles any one.
3. reflector according to claim 2, is characterized in that: this maximum direct projection angle is greater than 15 degree.
4. reflector according to claim 1, is characterized in that: these emergent light angles from greatly toward little be until be tending towards 0 degree of change.
5. reflector according to claim 1, is characterized in that: these crucial reflective spots at least comprise toward high distribution according to from low: one first crucial reflective spot, one second crucial reflective spot, one the 3rd crucial reflective spot and one the 4th crucial reflective spot.
6. reflector according to claim 1, is characterized in that: these crucial reflective spots of this reflector are connected by smoothing spline curve.
7. reflector according to claim 1, is characterized in that: this reflector is integrated injection molding.
8. a light fixture, is characterized in that: comprise the reflector described in any one of claim 1 to 7 and install the light source of central spot of bottom opening of this reflector, this light source is LED light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067751.XA CN104848167A (en) | 2015-02-09 | 2015-02-09 | Light reflection cup and lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510067751.XA CN104848167A (en) | 2015-02-09 | 2015-02-09 | Light reflection cup and lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104848167A true CN104848167A (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510067751.XA Pending CN104848167A (en) | 2015-02-09 | 2015-02-09 | Light reflection cup and lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104848167A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737637A (en) * | 2008-11-21 | 2010-06-16 | 海洋王照明科技股份有限公司 | Lamp reflector and lamp using same |
| CN101858560A (en) * | 2010-04-16 | 2010-10-13 | 海洋王照明科技股份有限公司 | High beam lamp reflector, high beam lamp and motor vehicle |
| CN201661992U (en) * | 2010-01-28 | 2010-12-01 | 天津中创天地科技发展有限公司 | Led lamp reflecting shade |
| CN103511978A (en) * | 2012-06-29 | 2014-01-15 | 欧司朗股份有限公司 | Lens, illuminating device and light box |
| CN204387963U (en) * | 2015-02-09 | 2015-06-10 | 深圳市朗恒电子有限公司 | Reflector and light fixture |
-
2015
- 2015-02-09 CN CN201510067751.XA patent/CN104848167A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101737637A (en) * | 2008-11-21 | 2010-06-16 | 海洋王照明科技股份有限公司 | Lamp reflector and lamp using same |
| CN201661992U (en) * | 2010-01-28 | 2010-12-01 | 天津中创天地科技发展有限公司 | Led lamp reflecting shade |
| CN101858560A (en) * | 2010-04-16 | 2010-10-13 | 海洋王照明科技股份有限公司 | High beam lamp reflector, high beam lamp and motor vehicle |
| CN103511978A (en) * | 2012-06-29 | 2014-01-15 | 欧司朗股份有限公司 | Lens, illuminating device and light box |
| CN204387963U (en) * | 2015-02-09 | 2015-06-10 | 深圳市朗恒电子有限公司 | Reflector and light fixture |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150819 |
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| RJ01 | Rejection of invention patent application after publication |