CN105953178A - Light gathering device of LED light and method forming light gathering device - Google Patents
Light gathering device of LED light and method forming light gathering device Download PDFInfo
- Publication number
- CN105953178A CN105953178A CN201610363871.9A CN201610363871A CN105953178A CN 105953178 A CN105953178 A CN 105953178A CN 201610363871 A CN201610363871 A CN 201610363871A CN 105953178 A CN105953178 A CN 105953178A
- Authority
- CN
- China
- Prior art keywords
- led
- condensing unit
- beam condensing
- light
- reflector
- 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
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- 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
- F21V7/04—Optical design
Abstract
The invention provides a light gathering device of an LED light and a method forming the light gathering device. The light gathering device is characterized in that the light gathering device is arc-shaped; the LED light is placed on one focus of the light gathering device; and a luminous surface of the LED light faces a reflective surface of the light gathering device. According to the light gathering device of the LED light, the cost is reduced, the light gathering efficiency is improved, and compared with a traditional reflection cup, the light gathering device has the advantages that in the scheme, only the reflective surface with half the volume of the reflection cup is required, 50% materials and 50% space are saved, and the fact that the light source gathering efficiency can reach 80% can be easily calculated.
Description
Technical field
(Digital Light Procession, is digital light to the present invention relates to the DLP of field of LED illumination
Process) projecting apparatus system, particularly relate to the beam condensing unit of a kind of LED and form the method for this beam condensing unit.
Background technology
LED has many advantages, and efficiency is high, the feature of life-span length, can use continuously 100,000 hours.Therefore
LED gradually instead of other light sources as lighting source, such as the light source such as electric filament lamp, mercury lamp.Then LED
Application method have also been obtained development rapidly, has the multiple optically focused scheme for LED and equipment at present,
Including: reflector (having another name called reflection shield), collecting lens group etc..
LED is a kind of emerging light source, has a lot of operational version, in these operational versions of some field not
Perfect, therefore limit the light source utilization rate of LED, also improve the manufacturing cost of related device.
In conventional DLP projector, needing in light collection a to entrance window, light gathering efficiency will impact
The drop shadow effect of DLP projector.The optically focused scheme of current modal LED is to utilize reflector to carry out optically focused, will
LED is placed on wherein, and light-emitting area direction is consistent with reflector opening direction, but this method has following
Shortcoming: light gathering efficiency is low, manufacturing cost is high and volume big, takes up room big.
For the problems referred to above, the concentrating method of a kind of practical LED is proposed.
Summary of the invention
It is an object of the invention to provide a kind of improve LED light gathering efficiency, reduce manufacturing cost, reduce poly-
The volume of light device, reduce the beam condensing unit of the LED of the waste of space resources and form the side of this beam condensing unit
Method.
The present invention provides the beam condensing unit of a kind of LED, and the curved shape of this beam condensing unit, LED is placed on this
In one focus of beam condensing unit, the light-emitting area of LED is in the face of the reflective surface of this beam condensing unit.
Wherein, described focus is positioned at the arc center inside of beam condensing unit, and the angle of the arc shape of beam condensing unit is little
Angle of scattering in LED.
Wherein, described beam condensing unit is provided with and is positioned at the terminal A of one end and relative with this terminal A and be positioned at another
The terminal B of end, the light that LED sends forms reflecting surface between terminal A and terminal B.
Wherein, the light sent of LED is via another Jiao of described beam condensing unit reflecting focal to beam condensing unit
On point.
Wherein, the size of angle а of the arc shape of described beam condensing unit is: 90 °≤а≤180 °.
Wherein, described beam condensing unit is formed by a reflector cutting.
The present invention also discloses a kind of method forming this beam condensing unit, comprises the steps:
The first step: by the light-emitting area of LED towards the reflective surface of reflector, and LED is placed on reflector
In one focus F1；
Second step: the light that LED sends, after reflective surface reflects, converges in another focus F2 of reflector；
3rd step: cut away the reflector part back to LED light-emitting area, that is: cut away reflector and sent by LED
The starting point of light reverse part to terminal；
4th step: forming the beam condensing unit of curved shape, that is: beam condensing unit is that reflector is sent light by LED
The starting point of line to terminal between part formed.
Wherein, described focus F1 is positioned at the center inside of reflector.
Wherein, described reflector is ellipsoid shape.
Wherein, the size of angle а of the arc shape of described beam condensing unit is: 90 °≤а≤180 °.
By the beam condensing unit of LED of the present invention, not only reduce cost but also improve light gathering efficiency, when taking a=90 °
Time, compare traditional reflector, this programme has only to the reflective surface of 1/2 volume, saves similar 50%
Material and the space of 50%；And lamp condenser efficiency can be easily calculated and can reach 80%.
Accompanying drawing explanation
Fig. 1 is the front view of reflector of the present invention；
Fig. 2 is that reflector shown in Fig. 1 is at the sectional view in D-D direction；
Fig. 3 is the upward view of reflector shown in Fig. 1；
Fig. 4 is the LED of the present invention schematic diagram at reflector inner focusing.
Detailed description of the invention
The present invention discloses the beam condensing unit of a kind of LED, refers to shown in Fig. 1 to Fig. 4, and LED 10 is arranged on one
In focus F1 of curved beam condensing unit 30, this beam condensing unit 30 is by the cutting of the reflector 20 in ellipsoid
Becoming, reflector refers to that with point source bulb be light source, needs the reflector of remote spotlighting.
Described focus F1 is positioned at inside the arc center O of beam condensing unit 30.
Assuming that whole reflector 20 is as this beam condensing unit 30, light-emitting area 11 (as shown in Figure 4) face of LED 10
To the reflective surface 21 of reflector 20, LED 10 is placed in focus F1 of reflector 20, reflector 20 conduct
The reflecting mirror of LED, the light that LED 10 sends is anti-after the B point of the A point reflection of reflector 20 to reflective surface 21
After penetrating, converge in another focus F2 of reflector 10 (as shown in Figure 4).
C point in Fig. 4 is an auxiliary magnet chosen to aid in illustrating, and C point is proximate to the arbitrfary point of B point.
C point is intended to explanation, LED send and be irradiated to beam condensing unit 30 glazing, being that one has the biggest angle of divergence
The diverging light of degree.
The present invention, by changing the position of the LED 10 placement in beam condensing unit (that is: reflector 20), has
Effect improves the utilization rate of light source.
The present invention use reflector as reflecting mirror, be characterized in light source when focal position, light is via reflective
The ellipsoid reflecting focal of cup is in another focus F2.
The starting point of the light that LED 10 sends is at the A point of light-emitting area 21, and the light that LED 10 sends is farthest
Terminal, on the B point of light-emitting area 21, cuts away the reflector 20 reverse part 22 between AB point, namely cuts away
Reflector 20 is back to the reverse part 22 of LED 20 light-emitting area 11, it may be assumed that cuts away reflector and is emitted beam by LED
The reverse part of starting point A B to terminal, form the beam condensing unit 30 of curved shape, it may be assumed that beam condensing unit is anti-
Part between starting point A that light cup is emitted beam by LED B to terminal is formed.
The light-emitting area of LED 20 is in the face of the reflective surface of this beam condensing unit 30.
For the DLP of field of LED illumination, (Digital Light Procession, is number to this beam condensing unit 30
Word optical processing) projecting apparatus system.
Owing to LED 10 is as light source, it has the angle of scattering of nearly 180 °, on the one hand, need LED 10
Light-emitting area 11 faced by is placed towards reflective surface 21, and this reflective surface 21 is the surface of the inside of reflector 20；Separately
On the one hand, owing to light source light in the angle of scattering of about 120 ° of LED compares concentration, in the present embodiment,
The light source angle of scattering of LED is 143 °, in order to reduce material and space cost as far as possible, so by reflective surface 21
Area reduce, cut away the reflector reverse part 22 back to the light-emitting area 11 of LED 20, it may be assumed that formed in arc
The beam condensing unit of shape, the size of angle а of the arc shape of this beam condensing unit is: 90 °≤а≤180 °,
And the angle of the arc shape of beam condensing unit 30 is less than the angle of scattering of LED.
The present invention also discloses a kind of method forming this beam condensing unit, comprises the steps:
The first step: by the light-emitting area of LED towards the reflective surface of reflector 20, and LED is placed on reflector
Focus F1 on；
Second step: the light that LED sends, after reflective surface reflects, converges to another focus F2 of reflector 10
On；
3rd step: cut away the reflector part 22 back to the light-emitting area 11 of LED 20, it may be assumed that cut away reflector by
The starting point that LED emits beam reverse part to terminal.
4th step: form the beam condensing unit of curved shape, it may be assumed that beam condensing unit is that reflector is sent light by LED
The starting point of line to terminal between part formed.
The beam condensing unit 30 formed by said method, this beam condensing unit be provided be positioned at one end terminal A and
Relative with this terminal A and be positioned at the terminal B of the other end, LED 10 is placed in focus F1 of beam condensing unit 30,
The light that LED sends is between terminal A and terminal B.
By so designing the beam condensing unit of LED, not only reduce cost but also improve light gathering efficiency, when taking
When a=90 °, comparing traditional reflector, this programme has only to the reflective surface of 1/2 volume, saves almost
The material of 50% and the space of 50%；And lamp condenser efficiency can be easily calculated and can reach 80%.
In traditional reflector scheme, only minority light can be thrown on reflecting surface, and reason is the light-emitting area of LED
Not directly facing reflecting surface.
Certainly in order to meet special use requirement, now can take by ellipsoid completion to more
A=180 °, although so sacrificing material and space, but the utilization rate of light source can bring up to 100%.
Above the specific embodiment of the present invention is described in detail, but content has been only the preferable of the invention
Embodiment, it is impossible to be considered the practical range for limiting the invention.All according to the invention application range
Impartial change and the improvement etc. made, within all should still belonging to the patent covering scope of the present invention.
Claims (10)
1. the beam condensing unit of a LED, it is characterised in that: the curved shape of this beam condensing unit, LED is placed
In a focus of this beam condensing unit, the light-emitting area of LED is in the face of the reflective surface of this beam condensing unit.
The beam condensing unit of LED the most according to claim 1, it is characterised in that: described focus is positioned at poly-
The arc center inside of electro-optical device, the angle of the arc shape of beam condensing unit is less than the angle of scattering of LED.
The beam condensing unit of LED the most according to claim 2, it is characterised in that: described beam condensing unit sets
Having and be positioned at the terminal A of one end and relative with this terminal A and be positioned at the terminal B of the other end, LED sends
Light forms reflecting surface between terminal A and terminal B.
The beam condensing unit of LED the most according to claim 1, it is characterised in that: the light sent of LED
Line is via on described beam condensing unit reflecting focal to another focus of beam condensing unit.
5. according to the beam condensing unit of the LED described in right 1, it is characterised in that: the arc of described beam condensing unit
The size of angle а of shape is: 90 °≤а≤180 °.
6. according to the beam condensing unit of the LED described in right 1, it is characterised in that: described beam condensing unit is anti-by one
The cutting of light cup is formed.
7. the method forming this beam condensing unit, it is characterised in that comprise the steps:
The first step: by the light-emitting area of LED towards the reflective surface of reflector, and LED is placed on reflector
In one focus F1；
Second step: the light that LED sends, after reflective surface reflects, converges in another focus F2 of reflector；
3rd step: cut away the reflector part back to LED light-emitting area, that is: cut away reflector and sent by LED
The starting point of light reverse part to terminal；
4th step: forming the beam condensing unit of curved shape, that is: beam condensing unit is that reflector is sent light by LED
The starting point of line to terminal between part formed.
8. according to the method forming this beam condensing unit described in right 7, it is characterised in that: described focus F1 is positioned at
The center inside of reflector.
9. according to the method forming this beam condensing unit described in right 7, it is characterised in that: described reflector is ellipse
Spherical.
10. according to the method forming this beam condensing unit described in right 7, it is characterised in that: described beam condensing unit
The size of angle а of arc shape be: 90 °≤а≤180 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363871.9A CN105953178A (en) | 2016-05-27 | 2016-05-27 | Light gathering device of LED light and method forming light gathering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610363871.9A CN105953178A (en) | 2016-05-27 | 2016-05-27 | Light gathering device of LED light and method forming light gathering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105953178A true CN105953178A (en) | 2016-09-21 |
Family
ID=56910135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610363871.9A Pending CN105953178A (en) | 2016-05-27 | 2016-05-27 | Light gathering device of LED light and method forming light gathering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105953178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780457A (en) * | 2019-10-25 | 2020-02-11 | 像航（上海）科技有限公司 | Cutting method of optical imaging element |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182903A (en) * | 2006-11-14 | 2008-05-21 | 叶建国 | Air discharge lamp (florescent lamp, CCFL) device |
| CN101373050A (en) * | 2007-07-26 | 2009-02-25 | 艾科雷支登有限公司 | Light fixture |
| CN101576594A (en) * | 2008-05-06 | 2009-11-11 | 大元科技股份有限公司 | Automatic optical checking equipment and light source module thereof |
-
2016
- 2016-05-27 CN CN201610363871.9A patent/CN105953178A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182903A (en) * | 2006-11-14 | 2008-05-21 | 叶建国 | Air discharge lamp (florescent lamp, CCFL) device |
| CN101373050A (en) * | 2007-07-26 | 2009-02-25 | 艾科雷支登有限公司 | Light fixture |
| CN101576594A (en) * | 2008-05-06 | 2009-11-11 | 大元科技股份有限公司 | Automatic optical checking equipment and light source module thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110780457A (en) * | 2019-10-25 | 2020-02-11 | 像航（上海）科技有限公司 | Cutting method of optical imaging element |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160921 |