CN102287647A - Light-emitting diode (LED) optical system and method for mixing light and zooming by using same - Google Patents
Light-emitting diode (LED) optical system and method for mixing light and zooming by using same Download PDFInfo
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- CN102287647A CN102287647A CN2011102211037A CN201110221103A CN102287647A CN 102287647 A CN102287647 A CN 102287647A CN 2011102211037 A CN2011102211037 A CN 2011102211037A CN 201110221103 A CN201110221103 A CN 201110221103A CN 102287647 A CN102287647 A CN 102287647A
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Abstract
The invention discloses a light-emitting diode (LED) optical system and a method for mixing light and zooming by using the same. The LED optical system comprises LEDs, a condenser lens and a zoom lens sequentially in a light direction, wherein a first micro lens group which consists of more than two first micro lenses is arranged on the light emergent surface of the condenser lens; the zoom lens comprises a zoom lens body and a second micro lens group which is arranged on the zoom lens body; the second micro lens group consists of second micro lenses; and the second micro lenses have the same number as the first micro lenses on the condenser lens and correspond to the first micro lenses. The method for mixing the light and zooming comprises the following steps of: mixing the light, thus forming small light spots which are positioned behind the first micro lens group and have a uniform color, and zooming the small spots by using the zoom lens so as to acquire a light spot. By using the optical system and the method, the spots with high color uniformity can be acquired, and the spots of different sizes also can be acquired.
Description
Technical field
The present invention relates to the method for optical system and mixed light, zoom, particularly LED optical system and utilize the LED optical system to carry out the method for mixed light, zoom.
Background technology
The LED lamp owing to have rich color, during advantages such as the life-span is long, luminous efficiency is high, energy-conserving and environment-protective are widely used in the daily life and stage is deduced.Because led chip mainly is red, blue and green, therefore, in the middle of practical application, in order to obtain the light of a certain specific color, need carry out mixed light usually.The light mixing method that adopts generally is the physics mixed light now, that is: as shown in Figure 1, the led chip of different colours is installed in light fixture, because the light that led chip sends has certain emission angle, therefore, thereby the light that led chip sends alone can be forwardly mixes the purpose that reaches mixed light with the light of adjacent led chip, but, as shown in Figure 1, because the emission angle of led chip is limited, therefore, have only a kind of light of color in LED light fixture edge, can't realize the purpose of mixed light, in addition, in the centre position, some place is the colour mixture district of two kinds of colors, and some then is the colour mixture district of three kinds of colors, like this, the hot spot that the LED light fixture is got has formed the hot spot that significantly has different color, has caused the inhomogeneities of color.In addition, more little as the emission angle of led chip as shown in Figure 2, then the distribution of different color blocks is obvious more, and color is also just inhomogeneous more.
In addition, the zoom in the existing LED light fixture is that the led light source at reality carries out, that is, the light that led light source sends directly enters into varifocal mirror, reaches the purpose of zoom by regulating distance between varifocal mirror and the led light source.The shortcoming of this zoom mode is: because led light source is a monochromatic source all, still be monochromatic light behind zoom, its mixed light finally is the physics mixed light, therefore, has caused the color of hot spot inhomogeneous.
Summary of the invention
First purpose of the present invention provides a kind of LED optical system, and the light that this optical system is sent color uniformity behind varifocal mirror is good, and has the function of zoom.
Second purpose of the present invention provides a kind of LED of utilization optical system to carry out the method for mixed light, zoom, and this method can not only obtain the good hot spot of color uniformity, and the hot spot that can obtain varying in size.
For reaching above-mentioned first purpose, a kind of LED optical system comprises LED, collector lens and zoom lens successively by radiation direction; On the collector lens exiting surface by the first lenticule group of forming by first lenticule more than two; Described varifocal mirror comprises the varifocal mirror body and is located at the second lenticule group on the varifocal mirror body, and the second lenticule group is made up of second lenticule, and second lenticule is equal with the first lenticule quantity on the collector lens and the position is corresponding.
LED is made up of more than one chip, and wherein, the chip among the LED can be same color, also can be different colours.When using this optical system, the light-ray condensing colour mixture that collector lens is dispersed LED, and by the first lenticule group, with light focusing at the first lenticule rear, form the small spot point equate with the first lenticule quantity, these hot spot points on the plane vertical with optical axis, small spot point of each second lenticule correspondence, for second lenticule, the small spot point is exactly a spot light; By adjusting the position of second lenticule at optical axis direction, change the outgoing beam angle, realize zoom.The described second lenticular quantity and position must be corresponding one by one with the first lenticular quantity and position, with realization the light that each first lenticule penetrates focused on again, thereby form needed in practice hot spot.
As improvement, each the first lenticule curvature in the first lenticule group equates that each the second lenticule curvature in the second lenticule group equates that first lenticule and second lenticule are positive lens.Each first lenticular curvature equates to guarantee that focus point through each first lenticular light is in same plane, for second lenticule again zoom the basis is provided preferably, again under the second lenticular cooperation that curvature equates, make the spot size that penetrates from second lenticule equate, thereby improve the irradiation optical quality of LED optical system.
As improvement, each in the first lenticule group is first little all in the same plane, and each second lenticule in the second lenticule group is all in the same plane.Each lenticule place can guarantee the formed virtual light source of the first lenticule group at grade in same plane, for zoom and second lens carry out again the basis that zoom provides; Each second lenticule quality that can improve the bright dipping hot spot all in the same plane.
As improvement, the place ahead of varifocal mirror is provided with grid, and grid is provided with grate opening, and the quantity of grate opening equates with the second lenticular quantity, and the position of grate opening is corresponding with the second lenticular position.Described grid is used to block the veiling glare that sends light from second lenticule, to improve the quality of hot spot.
Improve as this, the place ahead of grid is provided with the lamp tube.Described lamp tube is used to block the veiling glare that sends light from second lenticule, to improve the quality of hot spot.
As improvement, the sidewall of described collector lens is provided with reference column.Described reference column is used for collector lens location, prevents to rotate after collector lens is installed in the LED colour mixture lamp and makes first lenticule and second lenticule can't be corresponding one by one on the position, thereby influence the quality of hot spot.
As improvement, the periphery of varifocal mirror body is outward extended with flange, and the upper surface of flange is provided with positioning convex, and the outward flange of grid is provided with and the corresponding draw-in groove of positioning convex.Flange is set is convenient to install varifocal mirror; Described positioning convex is used to locate the flase floor that is located on the varifocal mirror, guarantees that grate opening is corresponding one by one on the position with second lenticule, improves the quality of hot spot.
As improvement, described flange is provided with a groove of up/down perforation.Described groove is used for determining the installation site of varifocal mirror, prevents the phenomenon that dislocation is installed, and causes first lenticule and second lenticule can't be corresponding one by one on the position and influence the quality of zoom and LED hot spot.
For reaching the second above-mentioned purpose, the LED optical system comprises LED, collector lens and zoom lens successively by radiation direction; On the collector lens exiting surface by the first lenticule group of forming by first lenticule more than two; Described varifocal mirror comprises the varifocal mirror body and is located at the second lenticule group on the varifocal mirror body, and the second lenticule group is made up of second lenticule, and second lenticule is equal with the first lenticule quantity on the collector lens and the position is corresponding.
The method of utilizing above-mentioned LED optical system to carry out mixed light, zoom is:
(1) collector lens light-ray condensing colour mixture that LED is dispersed, and, light focusing at the first lenticule rear, is formed the small spot point that equates with the first lenticule quantity by the first lenticule group, these hot spot points are on the plane vertical with optical axis.
(2) corresponding small spot point of each second lenticule, for second lenticule, the small spot point is exactly a spot light; By adjusting the position of second lenticule at optical axis direction, change the outgoing beam angle, realize zoom.
This mixed light, Zooming method, owing to be that the small spot point that the first lenticule group rear forms is carried out zoom, therefore, the hot spot color of ejaculation is even, and, can obtain different big or small hot spots by the position of regulating varifocal mirror.
As improvement, the place ahead of varifocal mirror is provided with grid, and grid is provided with grate opening, and the quantity of grate opening equates with the second lenticular quantity, and the position of grate opening is corresponding with the second lenticular position, removes the veiling glare that penetrates light from second lenticule; The place ahead of grid is provided with the lamp tube, to remove veiling glare.Like this, can improve the quality of hot spot.
Description of drawings
Fig. 1 is the index path of prior art when the led chip angle of departure is big.
Fig. 2 for prior art when led chip angle of departure index path hour.
Fig. 3 is the structure chart of optical system of the present invention.
Fig. 4 is the exploded view of optical system of the present invention.
Fig. 5 is a light path schematic diagram of the present invention.
Fig. 6 is the stereogram of collector lens.
Fig. 7 is the cutaway view of collector lens.
Fig. 8 is the varifocal mirror isometric front view.
Fig. 9 is the varifocal mirror rear isometric view.
Figure 10 is the exploded view of varifocal mirror and grid.
Figure 11 is the stereogram of grid.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is further elaborated.
As shown in Figure 3 and Figure 4, the LED optical system comprises LED, collector lens 1, varifocal mirror 2, grid 3 and lamp tube 4 successively by radiation direction.
LED is made up of more than one chip, and wherein, the chip among the LED can be same color, also can be different colours.
As shown in Figure 6 and Figure 7, collector lens 11 exiting surfaces 112 are provided with the first lenticule group of being made up of first lenticule 12 more than two, described collector lens 11 has an exiting surface 112, be provided with the containing cavity 13 that caves inward on collector lens, be used to lay LED, first lenticule 12 forms array on exiting surface, wherein, first lenticule can be a honeycomb arrangement, also can be that square permutation is arranged, and also can be that concentric circles is arranged; The sidewall 113 of collector lens 11 is provided with reference column 14, is used for collector lens location, prevents to rotate after collector lens is installed in the LED colour mixture lamp and makes first lenticule and second lenticule can't be corresponding one by one on the position, thereby influence the quality of hot spot.
Extremely shown in Figure 10 as Fig. 8, described varifocal mirror 2 comprises varifocal mirror body 21 and is located at corresponding second lenticule 22 in position that the first lenticule quantity with on the collector lens on the varifocal mirror body exiting surface equates, second lenticule 22 constitutes the second lenticule group, certainly, second lenticule also can be installed on the one side relative with varifocal mirror body exiting surface.The periphery of varifocal mirror body 21 is outward extended with flange 23, so that installation varifocal mirror, the upper surface of flange 23 is provided with positioning convex 24, as shown in figure 10, flase floor 3 is provided with clamping groove 31, when flase floor 3 was installed, clamping groove 31 was stuck on the positioning convex 24, by the location of positioning convex 24 realizations to flase floor 3; Described flange 23 is provided with a groove 25 of up/down perforation, is used for determining the installation site of varifocal mirror, makes win lenticule and the second lenticular position corresponding mutually, prevents the phenomenon that dislocation is installed and the quality that influences zoom and LED hot spot; The lower surface of flange 23 is provided with jut 26, and jut 26 is connected with the varifocal mirror body, to improve the bonding strength of flange 23 and varifocal mirror body 21.
Each first lenticule, 12 curvature in the described first lenticule group equate that each second lenticule, 22 curvature in the second lenticule group equate that first lenticule 12 and second lenticule 22 are positive lens.The curvature of each first lenticule 12 equates to guarantee that focus point through the light of each first lenticule 12 is in same plane, for second lenticule 22 again zoom the basis is provided preferably, again under the cooperation of second lenticule 22 that curvature equates, make the spot size that penetrates from second lenticule 22 equate, thereby improve the irradiation optical quality of LED optical system.
In the first lenticule group each is first little 12 all in the same plane, and each second lenticule 22 in the second lenticule group is all in the same plane.Each lenticule 12 place can guarantee the formed virtual light source of the first lenticule group at grade in same plane, for zoom and second lens 22 carry out again the basis that zoom provides; Each second lenticule 22 quality that can improve the bright dipping hot spot all in the same plane.
As shown in figure 11, grid 3 is provided with grate opening 32, and the quantity of grate opening 32 equates with the second lenticular quantity, and the position of grate opening 32 is corresponding with the second lenticular position.The edge of grid is provided with detent 33, when mounted, detent 33 is alignd with groove 25, aligns to guarantee the grate opening 32 and the second lenticular position.Described grid 3 and lamp tube 4 are used to block the veiling glare that sends light from second lenticule, to improve the quality of hot spot.
As shown in Figure 5, the method for utilizing above-mentioned LED optical system to carry out mixed light, zoom is:
(1) collector lens 11 light-ray condensing colour mixture that LED is dispersed, and, light focusing at first lenticule, 12 rears, is formed the small spot point that equates with the first lenticule quantity by the first lenticule group, these hot spot points are on the plane A vertical with optical axis.After the condenser 11 and the first lenticule group, described small light spot point color is even, and provides light source for the varifocal mirror zoom.
(2) corresponding small spot point of each second lenticule, for second lenticule, the small spot point is exactly a spot light; By adjusting the position of second lenticule at optical axis direction, change the outgoing beam angle, realize zoom.
The quantity of described second lenticule 22 and position must be corresponding one by one with the quantity and the position of first lenticule 12, with realization the light that each first lenticule penetrates focused on again, thereby form needed in practice hot spot.
Claims (10)
1. a LED optical system is characterized in that: comprise LED, collector lens and zoom lens successively by radiation direction; On the collector lens exiting surface by the first lenticule group of forming by first lenticule more than two; Described varifocal mirror comprises the varifocal mirror body and is located at the second lenticule group on the varifocal mirror body, and the second lenticule group is made up of second lenticule, and second lenticule is equal with the first lenticule quantity on the collector lens and the position is corresponding.
2. LED optical system according to claim 1 is characterized in that: each the first lenticule curvature in the first lenticule group equates that each the second lenticule curvature in the second lenticule group equates that first lenticule and second lenticule are positive lens.
3. LED optical system according to claim 1 is characterized in that: each in the first lenticule group is first little all in the same plane, and each second lenticule in the second lenticule group is all in the same plane.
4. LED optical system according to claim 1 is characterized in that: the place ahead of varifocal mirror is provided with grid, and grid is provided with grate opening, and the quantity of grate opening equates with the second lenticular quantity, and the position of grate opening is corresponding with the second lenticular position.
5. LED optical system according to claim 4 is characterized in that: the place ahead of grid is provided with the lamp tube.
6. LED optical system according to claim 1 is characterized in that: the sidewall of collector lens is provided with reference column.
7. LED optical system according to claim 4 is characterized in that: the periphery of varifocal mirror body is outward extended with flange, and the upper surface of flange is provided with positioning convex, and the outward flange of grid is provided with and the corresponding draw-in groove of positioning convex.
8. LED optical system according to claim 7 is characterized in that: described flange is provided with a groove of up/down perforation.
9. method of utilizing the LED optical system to carry out mixed light, zoom, it is characterized in that: the LED optical system comprises LED, collector lens and zoom lens successively by radiation direction; On the collector lens exiting surface by the first lenticule group of forming by first lenticule more than two; Described varifocal mirror comprises the varifocal mirror body and is located at the second lenticule group on the varifocal mirror body, and the second lenticule group is made up of second lenticule, and second lenticule is equal with the first lenticule quantity on the collector lens and the position is corresponding;
The method of utilizing above-mentioned LED optical system to carry out mixed light, zoom is:
(1) collector lens light-ray condensing colour mixture that LED is dispersed, and, light focusing at the first lenticule rear, is formed the small spot point that equates with the first lenticule quantity by the first lenticule group, these hot spot points are on the plane vertical with optical axis;
(2) corresponding small spot point of each second lenticule, for second lenticule, the small spot point is exactly a spot light; By adjusting the position of second lenticule at optical axis direction, change the outgoing beam angle, realize zoom.
10. the LED of utilization optical system according to claim 9 is carried out the method for mixed light, zoom, it is characterized in that: the place ahead of varifocal mirror is provided with grid, grid is provided with grate opening, the quantity of grate opening equates with the second lenticular quantity, and the position of grate opening is corresponding with the second lenticular position, removes the veiling glare that penetrates light from second lenticule; The place ahead of grid is provided with the lamp tube, to remove veiling glare.
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| CN2011102211037A CN102287647A (en) | 2011-08-03 | 2011-08-03 | Light-emitting diode (LED) optical system and method for mixing light and zooming by using same |
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| CN2011102211037A CN102287647A (en) | 2011-08-03 | 2011-08-03 | Light-emitting diode (LED) optical system and method for mixing light and zooming by using same |
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| US8733981B2 (en) | 2012-05-25 | 2014-05-27 | Huizhou Light Engine Limited | Lens with multiple curved surfaces for LED projecting lamp |
| CN104180300A (en) * | 2013-05-28 | 2014-12-03 | 海洋王（东莞）照明科技有限公司 | Lamp and lens thereof |
| CN109386757A (en) * | 2017-08-02 | 2019-02-26 | 艾科有限公司 | Luminaire |
| CN110131657A (en) * | 2019-03-20 | 2019-08-16 | 广州火盛科技有限公司 | A kind of light source emerging system that colour mixture is fabulous |
| CN113048444A (en) * | 2019-12-26 | 2021-06-29 | Sl株式会社 | Vehicle lamp |
| CN113646583A (en) * | 2019-04-08 | 2021-11-12 | 莱迪尔公司 | Optical device for modifying light distribution |
| US11199306B2 (en) | 2017-08-02 | 2021-12-14 | Erco Gmbh | Lamp |
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