CN101769500A - Optical element of lightening device - Google Patents
Optical element of lightening device Download PDFInfo
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- CN101769500A CN101769500A CN200910000084A CN200910000084A CN101769500A CN 101769500 A CN101769500 A CN 101769500A CN 200910000084 A CN200910000084 A CN 200910000084A CN 200910000084 A CN200910000084 A CN 200910000084A CN 101769500 A CN101769500 A CN 101769500A
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Abstract
The present invention relates to an optical element of a lightening device, which is matched with a solid luminous element to form the lightening device. The optical element of a lightening device comprises a light-out surface (a front-side optical surface) and a light-in surface (a light source side optical surface), wherein the light-out surface is a curved surface of sphere or non sphere; a V-shaped groove formed by two symmetrical or non-symmetrical surfaces or a groove similar to a V shape formed by a plurality of sections of straight lines or curve lines, or paraboloid , ellipsoid or the curved surface of non sphere are arranged on the light-in surface; light shafts of the light-in surface and the light surface are superposable, correspondingly offset, correspondingly inclined, or combined by the above; when the optical element is matched to at least one solid luminous element to be used, a non-symmetrical bat fin can be generated. The present invention is characterized in that the largest light strength is not at the light shape of a zero point to enable luminous degree at a luminous zone even, and the usage of light can be increased by the design of the V-shaped groove or the groove similar to the V shape of the light-in surface.
Description
Technical field
The present invention is the optical element of relevant a kind of lighting device, especially refer to a kind ofly produce the asymmetric bat wing (batwing) light shape, and its incidence surface is provided with a V-type groove that is formed by two symmetries or asymmetric inclined-plane or the optical element of the class V-type groove that is combined to form by the multistage curve.
Background technology
Solid-state illumination luminous (Solid State Lighting) element has been widely used the light source as lighting device, and its application comprises the auxiliary lighting apparatus of flashlight, desk lamp, car light such as headlight and tail-light group, road illuminating lamp or other electronic products etc.In the application of solid-state light emitting element, be the example explanation with the road illuminating lamp, solid-state lighting lamp on the market uses the collimation optics of symmetry more or does not have the optics element at present, can cause bright inner room every the Illumination Distribution inequality.The condition and the demand that can meet the lighting device of above-mentioned different purposes for the light that makes solid-state illumination light or the formed solid-state illumination array of several solid-state illuminations, when using solid luminescent spare as light source, each solid-state light emitting element is except having had the first basic optical element on encapsulating structure, place, the place ahead at solid luminescent spare generally disposes one second optical element all again, use the service efficiency that promotes solid-state illumination light, promptly in order to increase effective illumination (illumination unit: lux) and reduce process loss, or in order to adjust the direction of illumination of solid-state illumination light, area and illuminance uniformity thereof.
And at the design of above-mentioned solid-state illumination first optical element and/or second optical element, existing many prior arts disclose relevant technology, as No. the 262604th: TaiWan, China patent certificate and the structural design of openly numbering the incidence surface (light source-side optical face) that discloses optical element for No. 2004028899 respectively and/or exiting surface (front side optical surface) incident light is directed to a predetermined light direction, but when incident light is directed to big shooting angle, designed element optical surface is all free form surface and can't utilizes computer computing design, is unfavorable for the making of forming die for optical element; Openly number and disclose structural design that an optical element is made of a plurality of optical element portions with different curvature for No. 200507293 so that the part incident light is directed to the optical element side, but must encapsulate secondary, and the size of optical element has limited the size of solid-state light emitting element; The U.S. openly numbers US2005/0243570 and discloses the incidence surface of optical element and the structural design US6 that exiting surface is made of front and back symmetry and special shape, 940,660 incidence surfaces that disclose optical element are close to parallel forward light direction around the structural design that center (a plurality of confocally disposed annular reflector surrounding saidcentral region) constitutes so that incident light is directed to by a plurality of confocal ring-type refractive bodies; The structural design that US6,940,660 exiting surfaces that disclose optical elements are made of a sawtooth optics portion (a sawtooth optical portion) is to be directed to most of incident light to the optical element side.As from the foregoing, in the lighting device application technology that with the solid-state light emitting element is light source, develop the lighting device that a kind of utilization rate and service efficiency simple in structure, light increase, have good uniformity, production and assembly are easy and cost is low, its desirability is arranged really.
Summary of the invention
Main purpose of the present invention is the optical element that is to provide a kind of lighting device, be to use to constitute a lighting device in order to the collocation solid-state light emitting element, this optical element is an optical element body, comprise an at least one exiting surface and an incidence surface, described exiting surface, being the front side optical surface, is a sphere or aspheric curved surface; Described incidence surface, for the light source-side optical face with towards solid-state light emitting element, which is provided with the groove of a V-type or class V-type; The both side surface of this groove is respectively towards the utilization rate of solid-state light emitting element with enhancement light; When this optical element and at least one solid-state light emitting element collocation use, the light that this at least one solid-state light emitting element sent is incident in the optical bodies via the surface of this groove, throw outward through bright dipping again, with produce asymmetric and shape like the non-light shape of its maximum light intensity of the bat wing at zero point.
Wherein, described V-type groove is formed or is combined to form by multistage straight line or curve by two symmetries or asymmetric inclined-plane, establishes an arc lead angle as the class V-type groove that is to be formed by a parabola, an ellipsoid or non-spherical surface or on the V-type top.
Wherein, the optical axis of this incidence surface of the optical element of lighting device can be with the optical axis of exiting surface and overlaps, the combination of relativity shift, relative tilt or above various kenels, make and to select the suitable optical element of combination according to need implementing, use the selectivity that increases optical element, and the service efficiency of further promoting lighting device.
Wherein, this optical element of the optical element of lighting device can comprise a plurality of exiting surfaces and corresponding incidence surface simultaneously, as utilizing each four corresponding exiting surface and incidence surface and with array or be staggered and integral production is shaped to a combined optical element (multilens unit), use making production and assembly simplify and reduce production costs.
Wherein this exiting surface of the optical element of lighting device is according to sphere or aspherics formula and cooperates actual light shape needs and the sphere or the non-spherical surface that are designed to, can form a recess as central position, to reach asymmetric and shape light shape like the bat wing (batwing) at the curved surface of exiting surface.
Beneficial effect of the present invention is, when optical element and at least one solid-state light emitting element collocation use, deviation angle that can be specific when making beam path that this at least one solid-state light emitting element sends and be incident in the optical element at V-arrangement both sides rightabout respectively via the surperficial incident of the V-type groove of this incidence surface or class V-type groove, outwards throw through exiting surface again, use producing asymmetric and shape light shape, so that irradiated area illumination, briliancy are even like the bat wing (batwing).
Description of drawings
Fig. 1 is last angle (exiting surface) schematic diagram of optical element first embodiment of the present invention;
Fig. 2 is visual angle, the end (incidence surface) schematic diagram embodiment illustrated in fig. 1;
Fig. 3 is the side cross-sectional schematic of using with the solid-state light emitting element collocation embodiment illustrated in fig. 1;
Fig. 4 is upward angle of visibility (exiting surface) schematic diagram of optical element second embodiment of the present invention;
Fig. 5 is visual angle, the end (incidence surface) schematic diagram embodiment illustrated in fig. 4;
Fig. 6 is the side cross-sectional schematic of using with the solid-state light emitting element collocation embodiment illustrated in fig. 4;
Fig. 7 is upward angle of visibility (exiting surface) schematic diagram of optical element the 3rd embodiment of the present invention;
Fig. 8 is visual angle, the end (incidence surface) schematic diagram embodiment illustrated in fig. 7;
Fig. 9 is the side cross-sectional schematic of using with the solid-state light emitting element collocation embodiment illustrated in fig. 7;
Figure 10 is the upward angle of visibility schematic diagram of optical element the 4th embodiment of the present invention;
Figure 11 is visual angle, an end schematic diagram embodiment illustrated in fig. 10;
Figure 12 is the side cross-sectional schematic of using with the solid-state light emitting element collocation embodiment illustrated in fig. 10;
Figure 13 is the upward angle of visibility schematic diagram of optical element the 5th embodiment of the present invention;
Figure 14 is visual angle, the end (incidence surface) schematic diagram embodiment illustrated in fig. 13;
Figure 15 is the side cross-sectional schematic of using with the solid-state light emitting element collocation embodiment illustrated in fig. 13;
Figure 16 is upward angle of visibility angle (exiting surface) schematic diagram of optical element the 6th embodiment of the present invention;
Figure 17 is visual angle, the end (incidence surface) schematic diagram embodiment illustrated in fig. 16;
Figure 18 is the side cross-sectional schematic of using with the solid-state light emitting element collocation embodiment illustrated in fig. 16;
Figure 19 is another side (turning 90 degrees) cross-sectional schematic of Figure 18;
Figure 20 is the upward angle of visibility schematic diagram of optical element the 7th embodiment of the present invention;
Look schematic diagram on Figure 21 is embodiment illustrated in fig. 20;
Figure 22 is a side cross-sectional schematic embodiment illustrated in fig. 20;
Figure 23 is that one of eighth embodiment of the invention (optical element arrange in pairs or groups two illuminating parts) is used schematic diagram;
Look schematic diagram on Figure 24 Figure 23;
Figure 25 is that another of eighth embodiment of the invention (optical element arrange in pairs or groups two illuminating parts) uses schematic diagram;
Look schematic diagram on Figure 26 Figure 25;
Figure 27 is the polar diagram of optical element of the present invention (the 6th embodiment) the light shape that produces, and wherein comprises asymmetric and shape light shape B and the light shape C schematic diagram like the bat wing (batwing).
Description of reference numerals:
The 1-optical element; The 2-solid-state light emitting element; The 3-lighting device; 4-combined optical element (multilens unit); The 10-exiting surface; The 11-optical axis; The 12-recess; The 20-incidence surface; 21,21a～21f-(V-type or class V-type) groove; The 22-inclined-plane; The 23-optical axis; 24-arc lead angle; The 25-curved surface.
The specific embodiment
For making the present invention clear and definite more full and accurate, structure of the present invention and technical characterictic conjunction with figs. thereof are described in detail as the back:
Shown in figure 1-3, optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2 as shown in Figure 1, 2, uses to constitute a lighting device 3 as shown in Figure 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, it is according to sphere or aspherics formula and cooperates actual light shape needs and design formation that shown in Fig. 1,3, this exiting surface 10 has an optical axis 11, and can form a recess 12 in the central position of the curved surface of exiting surface, use and reach asymmetric and shape light shape like the bat wing (batwing); This incidence surface 20 is provided with a V-type or class V-type groove 21, the groove 21 of this V-type or class V-type comprises: by two symmetries or the V-type groove 21 that forms of asymmetric inclined-plane, or the class V-type groove 21 that is combined to form by multistage straight line or curve, as having the arc lead angle on the V-type top, or by parabolic, ellipsoid or the formed class V-type of aspheric curved surface groove 21 etc.; Again the optical axis 23 of this incidence surface 20 can be with the optical axis 11 of exiting surface 10 overlap, relativity shift, relative tilt or above combination; When at least one solid-state light emitting element 2 of this optical element 1 collocation uses, can produce asymmetric and shape like the bat wing (batwing; It is non-at zero point to be characterized as maximum light intensity) light shape (Distribution Patterns) as shown in figure 27, so that irradiated area illumination is even, but and the design of the V-type of this incidence surface 20 of mat or class V-type groove 21, make the surface of V-type or class V-type groove 21 can be towards the spot light of solid-state light emitting element 2, to effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of V-type or class V-type groove 21) that solid-state light emitting element 2 sent, with relative reduction volume reflection, use the utilization rate and the service efficiency of promoting light; The relative position of this illuminating part and optical element can be centrally aligned or relativity shift again.
Need according to enforcement again, optical element of the present invention further can comprise a plurality of exiting surfaces 10 and corresponding incidence surface 20 simultaneously, as utilizing each four corresponding exiting surface 10 and incidence surface 20 and with array or be staggered and integral production is shaped to a combined optical element (multilens unit) 4 shown in Figure 20-22, make this combined optical element 4 arrange in pairs or groups a plurality of solid-state light emitting elements 2 as four uses to constitute a lighting device again, use and simplify the production and assembly operation and reduce production costs in corresponding mode one to one.
Now enumerate preferred embodiment and be respectively described below:
＜the first embodiment 〉
With reference to figure 1-3, it is respectively upward angle of visibility (exiting surface), visual angle, the end (incidence surface) solid of optical element first embodiment of the present invention and the side cross-sectional schematic that combines with solid-state light emitting element thereof; Optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2, uses to constitute a lighting device 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, it is according to sphere or aspherics formula and cooperates actual light shape needs and design formation, shown in Fig. 1,3, this exiting surface 10 has an optical axis 11, and forms a recess 12 in the central position of the curved surface of exiting surface; This incidence surface 20 is provided with a V-type groove 21, and wherein, this V-type groove 21 does not limit the center that is located at incidence surface 20, and this V-type groove 21 can be located at vertically place, side on the lower side as shown in Figure 2; Its V-type groove 21 is the V-type groove 21a that formed by disymmetrical inclined-plane 22 among the optical element 1a of present embodiment, and the optical axis 23 of this incidence surface 20 is to overlap as shown in Figure 3 with the optical axis 11 of exiting surface 10; The optical axis of this optical element 1a and solid-state light emitting element 2 does not have relative displacement among Fig. 3 again, but in the another side cross-sectional schematic (is that Fig. 3 turn 90 degrees, not shown) in can relative displacement between the optical axis of this optical element 1a and solid-state light emitting element 2, with Fig. 2 explanation, this solid-state light emitting element 2 is provided in a side of in the scope zone, bottom surface of V-type groove 21a, but do not limit the middle position that is located at V-type groove 21a (21), promptly do not limit being located at the vertically centre position of width of V-type groove 21a (21); And above-mentioned off-centered design such as V-type groove 21 do not limit the center or the solid-state light emitting element 2 that are located at incidence surface 20 and do not limit the middle position that is located at V-type groove 21a (21), are with implementing to need change design.
By this, when optical element 1 uses with at least one solid-state light emitting element 2 collocation as shown in Figure 3, the beam path that this at least one solid-state light emitting element 2 sent can be via two inclined-plane 22 of the V-type groove 21a of this incidence surface 20 and is incident in optical element 1 body, the incident light on this two inclined-plane 22 is reflected with opposite angles, outwards throw through the sphere of exiting surface 10 or aspheric curved surface refraction back again; So not only can produce asymmetric and shape like the light shape (Distribution Patterns) of the bat wing (batwing) shown in the light shape C among Figure 27, the illumination, briliancy that makes irradiated area is homogenising effectively, and since two inclined-planes 22 of V-type groove 21a be each with the inclination angle towards the spot light of solid-state light emitting element 2, can effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of V-type groove 21a) that solid-state light emitting element 2 sent, with relative reduction volume reflection, so can promote the utilization rate and the service efficiency of light.
＜the second embodiment 〉
With reference to figure 4-6, it is respectively upward angle of visibility (exiting surface), visual angle, the end (incidence surface) of optical element second embodiment of the present invention and the side cross-sectional schematic that combines with solid-state light emitting element thereof; Optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2, uses to constitute a lighting device 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, and this incidence surface 20 is provided with a V-type groove 21, wherein, this V-type groove 21 does not limit the center that is located at incidence surface 20, and V-type groove 21 can be located at vertically place, side on the lower side as shown in Figure 5; Its V-type groove 21 is the class V-type groove 21b that are combined to form by multistage straight line or curve among the optical element 1b of present embodiment, and the optical axis 23 of this incidence surface 20 is to overlap as shown in Figure 6 with the optical axis 11 of exiting surface 10; The optical axis of this optical element 1b and solid-state light emitting element 2 does not have relative displacement among Fig. 6 again, but in the another side cross-sectional schematic (is that Fig. 6 turn 90 degrees, not shown) in can relative displacement between the optical axis of this optical element 1b and solid-state light emitting element 2, just this solid-state light emitting element 2 does not limit the middle position that is located at V-type groove 21b (21), the off-centered design of this kind is identical with first embodiment, can make light lead road ahead shown in the light shape B of Figure 27 by the roadside.
By this, when optical element 1 uses with at least one solid-state light emitting element 2 collocation as shown in Figure 6, the beam path that this at least one solid-state light emitting element 2 sent can be respectively via two inclined-planes 22 of the V-type groove 21 of this incidence surface 20 and be incident in optical element 1 body, the incident light on this two inclined-plane 22 is reflected, outwards projection after the refraction of the sphere of exiting surface 10 or aspheric curved surface again with opposite angles; So not only can produce asymmetric and shape like the light shape (Distribution Patterns) of the bat wing (batwing) shown in the light shape C among Figure 27, the illumination, briliancy that makes irradiated area is homogenising effectively, and because two inclined-planes 22 of V-type groove 21b are that each is with the spot light of angle of inclination towards solid-state light emitting element 2, can effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of V-type groove 21b) that solid-state light emitting element 2 sent, with relative reduction volume reflection, so can promote the utilization rate and the service efficiency of light.
＜the three embodiment 〉
With reference to figure 7-9, it is respectively upward angle of visibility (exiting surface), visual angle, the end (incidence surface) of optical element the 3rd embodiment of the present invention and the side cross-sectional schematic that combines with solid-state light emitting element thereof; Optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2, uses to constitute a lighting device 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, and this incidence surface 20 is provided with a V-type groove 21, wherein, this V-type groove 21 does not limit the center that is located at incidence surface 20, and this V-type groove 21 can be located at vertically place, side on the upper side as shown in Figure 8; Its V-type groove 21 is to have the class V-type groove 21c that an arc lead angle 24 forms by disymmetrical inclined-plane 22 and V-type top and border among the optical element 1c of present embodiment, and the optical axis 23 of this incidence surface 20 is to overlap as shown in Figure 9 with the optical axis 11 of exiting surface 10; The optical axis of this optical element 1c and solid-state light emitting element 2 does not have relative displacement among Fig. 9 again, but in the another side cross-sectional schematic (is that Fig. 9 turn 90 degrees, not shown) in can relative displacement between the optical axis of this optical element 1c and solid-state light emitting element 2, just this solid-state light emitting element 2 does not limit the middle position that is located at V-type groove 21c (21).
By this, when optical element 1 uses with at least one solid-state light emitting element 2 collocation as shown in Figure 9, the beam path that this at least one solid-state light emitting element 2 sent can be respectively via two inclined-planes 22 of the class V-type groove 21c of this incidence surface 20 and be incident in optical element 1 body, the incident light on this two inclined-plane 22 is reflected, outwards projection after the refraction of the sphere of exiting surface 10 or aspheric curved surface again with opposite angles; So not only can produce asymmetric and shape like the light shape (Distribution Patterns) of the bat wing (batwing) shown in the light shape C among Figure 27, the illumination, briliancy that makes irradiated area is homogenising effectively, and because two inclined-planes 22 of such V-type groove 21c are that each is with the spot light of angle of inclination towards solid-state light emitting element 2, can effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of class V-type groove 21c) that solid-state light emitting element 2 sent, with relative reduction volume reflection, so can promote the utilization rate and the service efficiency of light relatively.
＜the four embodiment 〉
With reference to figure 10-12, it is respectively upward angle of visibility (exiting surface), visual angle, the end (incidence surface) of optical element the 4th embodiment of the present invention and the side cross-sectional schematic that combines with solid-state light emitting element thereof; Optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2, uses to constitute a lighting device 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, and this incidence surface 20 is provided with a class V-type groove 21, wherein, this V-type groove 21 does not limit the center that is located at incidence surface 20, and this V-type groove 21 can be located at vertically place, side on the lower side as shown in figure 11; Its class V-type groove 21 is one by parabola or ellipsoid or aspheric curved surface 25 formed class V-type groove 21d among the optical element 1d of present embodiment, and the optical axis 23 of this incidence surface 20 is to overlap as shown in figure 12 with the optical axis 11 of exiting surface 10; The optical axis of this optical element 1d and solid-state light emitting element 2 does not have relative displacement among Figure 12 again, but in the another side cross-sectional schematic (is that Figure 12 turn 90 degrees, not shown) in can relative displacement between the optical axis of this optical element 1d and solid-state light emitting element 2, just this solid-state light emitting element 2 does not limit the middle position that is located at V-type groove 21d (21), shown in the light shape B of the similar Figure 27 of its result.
By this, when optical element 1 uses with at least one solid-state light emitting element 2 collocation as shown in figure 12, the beam path that this at least one solid-state light emitting element 2 sent can be incident in optical element 1 body via parabola, ellipsoid or the aspheric curved surface 25 of the class V-type groove 21d of this incidence surface 20, more outwards projection after the refraction of the sphere of exiting surface 10 or aspheric curved surface; So not only can produce asymmetric and shape like the light shape (Distribution Patterns) of the bat wing (batwing) shown in the light shape C among Figure 27, the illumination, briliancy that makes irradiated area is homogenising effectively, and because the each several part of parabola, ellipsoid or the aspheric curved surface of class V-type groove 21d is the spot light towards solid-state light emitting element 2, can effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of class V-type groove 21d) that solid-state light emitting element 2 sent, with relative reduction volume reflection, so can promote the utilization rate and the service efficiency of light.
＜the five embodiment 〉
With reference to figure 13-15, it is respectively upward angle of visibility (exiting surface), visual angle, the end (incidence surface) of optical element first embodiment of the present invention and the side cross-sectional schematic that combines with solid-state light emitting element thereof; Optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2, uses to constitute a lighting device 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, this incidence surface 20 is provided with a V-type groove 21, wherein, this V-type groove 21 does not limit the center that is located at incidence surface 20, and this V-type groove 21 can be located at vertically place, side on the upper side as shown in figure 14; Its V-type groove 21 is the V-type groove 21e that formed by two inclined-planes 22 among the optical element 1e of present embodiment, but the optical axis 23 of this incidence surface 20 be with optical axis 11 relativity shifts of exiting surface 10 as shown in figure 15, just the slope on two inclined-planes 22 of V-type groove 21e is different and form asymmetrical relationship; The existing relative displacement of the optical axis of this optical element 1e and solid-state light emitting element 2 among Figure 15 again, (be that Figure 15 turn 90 degrees in the another side cross-sectional schematic again, not shown) but in also relative displacement between the optical axis of this optical element 1d and solid-state light emitting element 2, just this solid-state light emitting element 2 does not limit the middle position that is located at V-type groove 21e (21).
By this, when optical element 1 uses with at least one solid-state light emitting element 2 collocation as shown in Figure 3, the beam path that this at least one solid-state light emitting element 2 sent is incident in optical element 1 body via two inclined-planes 22 of the V-type groove 21e of this incidence surface 20, the incident light that makes this two inclined-plane 22 is with asymmetric reverse refraction, outwards throws through the sphere or the aspheric curved surface refraction back of exiting surface 10 again; So not only can produce asymmetric and shape like the light shape (Distribution Patterns) of the bat wing (batwing) shown in the light shape C among Figure 27, the Illumination Distribution of irradiated area can be controlled, and since two inclined-planes 22 of V-type groove 21e be each with the inclination angle towards the spot light of solid-state light emitting element 2, can effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of V-type groove 21e) that solid-state light emitting element 2 sent, with relative reduction volume reflection, so can promote the utilization rate and the service efficiency of light.
＜the six embodiment 〉
With reference to figure 16-19, it is respectively upward angle of visibility (exiting surface), visual angle, the end (incidence surface) of optical element first embodiment of the present invention and two side faces (turning 90 degrees) cross-sectional schematic that combines with solid-state light emitting element thereof; Optical element 1 of the present invention is to use in order to collocation solid-state light emitting element 2, uses to constitute a lighting device 3; This optical element 1 is an optical element body, has an exiting surface (front side optical surface) 10 and one incidence surface (light source-side optical face) 20, wherein, this exiting surface 10 is a sphere or aspheric curved surface, this incidence surface 20 is provided with a V-type groove 21, wherein, this V-type groove 21 does not limit the center that is located at incidence surface 20, and this V-type groove 21 can be located at vertically place, side on the upper side as shown in figure 17; Its V-type groove 21 is the V-type groove 21f that formed by two inclined-planes 22 among the optical element 1f of present embodiment, but the optical axis 23 of this incidence surface 20 is and optical axis 11 relative tilts of exiting surface 10 that it is gradually dark to the other end by an end as shown in figure 19; The optical axis of this optical element 1f and solid-state light emitting element 2 does not have relative displacement among Figure 19 again, but in the another side cross-sectional schematic (is that Figure 18 turn 90 degrees, not shown) but in relative displacement between the optical axis of this optical element 1f and solid-state light emitting element 2, just this solid-state light emitting element 2 does not limit the middle position that is located at V-type groove 21f (21), the off-centered design of this kind is identical with first embodiment, can make light lead road ahead shown in the light shape B of Figure 27 by the roadside; In fact, light shape B and light shape C shown in Figure 27 form through measuring according to the optical element 1e of this 6th embodiment.
By this, when optical element 1 uses with at least one solid-state light emitting element 2 collocation shown in Figure 18,19, the beam path that this at least one solid-state light emitting element 2 sent is incident in optical element 1 body via two inclined-planes 22 of the V-type groove 21f of this incidence surface 20, the incident light on this two inclined-plane 22 is reflected with opposite angles, outwards throw through the sphere of exiting surface 10 or aspheric curved surface refraction back again; So not only can produce asymmetric and shape as shown in figure 27 like the light shape (Distribution Patterns) of the bat wing (batwing), the illumination that makes irradiated area is homogenising effectively, and since two inclined-planes 22 of V-type groove 21f be each with the inclination angle towards the spot light of solid-state light emitting element 2, can effectively reduce the incidence angle of the light incident incidence surface 20 (being the surface of V-type groove 21f) that solid-state light emitting element 2 sent, and reduce volume reflection relatively, so can promote the utilization rate and the service efficiency of light.
＜the seven embodiment 〉
With reference to figure 20-22, its be respectively optical element the 7th embodiment of the present invention upward angle of visibility (exiting surface), side and on look cross-sectional schematic; When reality is made, optical element of the present invention does not limit and only comprises an exiting surface 10 and a corresponding incidence surface 20, optical element of the present invention further can comprise a plurality of exiting surfaces 10 and incidence surface 20 simultaneously, shown in Figure 20-22, comprise four corresponding exiting surfaces 10 and incidence surface 20, and with array or be staggered and integral production is shaped to a combined optical element (multilens unit) 4; This combined optical element 4 a plurality of solid-state light emitting elements 2 of can corresponding one to one mode arranging in pairs or groups use; This design can make the irradiation area scope of each combined optical element 4 strengthen, irradiation area scope as combined optical element 4 is bigger than the irradiation area scope that aforementioned each embodiment only comprises an exiting surface 10 and corresponding incidence surface 20 optical elements 1, help the manufacturing of optical element and the assembling operation of lighting device, as assembling one when having the lighting device of 4 exiting surfaces 10 of 8 lines of file and corresponding incidence surface 20, then can use 2 combined optical elements 4 of 4 lines of file, use and simplify production and assembly and reduce production costs.
Among above-mentioned again first to the 6th embodiment, may be selected to be between the optical axis 23 of this incidence surface 20 and the optical axis 11 of exiting surface 10 and overlap kenel as first to fourth embodiment, or the relativity shift kenel is as the 5th embodiment, or the relative tilt kenel is as the 6th embodiment, or the combination of above various kenels is as the combination of first, five, six embodiment, make and to select the suitable optical element of combination according to need implementing, use selectivity that increases optical element and the service efficiency of further promoting lighting device.
＜the eight embodiment 〉
With reference to figure 23-24 and Figure 25-26, it is respectively that two of optical element the 8th embodiment of the present invention (optical element arrange in pairs or groups two illuminating parts) uses schematic diagrames; One exiting surface 10 of optical element 1 of the present invention and a corresponding incidence surface 20 solid-state light emitting element 2 of can corresponding one to one mode arranging in pairs or groups uses but does not limit, each optical element 1 shown in Fig. 1-2 2 (having an exiting surface 10 and a corresponding incidence surface 20) solid-state light emitting element 2 of can arranging in pairs or groups uses, and for example each optical element 1 shown in Figure 23-24 and Figure 25-26 (having an exiting surface 10 and a corresponding incidence surface 20) can be arranged in pairs or groups 2 uses of two solid-state light emitting elements to increase the luminous intensity of irradiates light, wherein, this optical element 1 body that can be formed in one, also can be a composite members, this incidence surface 20 is provided with a V-type or class V-type groove 21; And this two solid-state light emitting element 2 can and close arrangement, and with the below place of two solid-state light emitting elements 2 with the V-type top line that is located at set V-type on the incidence surface 20 or class V-type groove 21, promptly the length of two solid-state light emitting elements 2 to V-type top line parallel shown in Figure 23-24, or be located on the relative both sides of this V-type top line, promptly the length of two solid-state light emitting elements 2 is to vertical shown in Figure 25-26 with V-type top line.
Shape is not limited outside the optical element 1 of the present invention, can be circular optical bodies as described above first, second, third and fourth, shown in the correlation diagram of six embodiment, or be five embodiment of optical bodies shown in Figure 13-15 of a nearly rectangle; When utilizing a plurality of optical elements 1 to be assembled into a lighting device again, it assembles kenel, the number of size or the optical element that uses 1 and arrangement mode etc. do not limit, can be according to the different needs of application matching design, as bottom dowel is set at optical element 1 or combined optical element 4, for can simple and easy assembling be positioned at circuit board (figure does not show) with circuit board on solid-state light emitting element 2 corresponding matching that match, or at road illuminating lamp, desk lamp, car light, or different application such as other products and different designs can be provided, and present embodiment is to be example explanation with road illuminating lamp or ware, but non-in order to restriction the present invention.Again, the encapsulating structure of solid-state light emitting element 2, package assembly, lighting kenel, processing procedure and circuit design of matching etc. do not limit, as can be with using or structure needs design, and because these designs are to utilize the known techniques can the person of reaching, so repeat no more in this.
More than shown in only be the preferred embodiments of the present invention, only be illustrative for the purpose of the present invention, and nonrestrictive.Common knowledge personnel understand at this professional skill field tool, can carry out many changes to it in the spirit and scope that claim of the present invention limited, revise, even the equivalence change, but all will fall within the scope of protection of the present invention.
Claims (10)
1. the optical element of a lighting device is that the collocation solid-state light emitting element uses, and this optical element is an optical element body, comprises an at least one exiting surface and an incidence surface, it is characterized in that:
Described exiting surface is the front side optical surface, is a sphere or aspheric curved surface;
Described incidence surface, for the light source-side optical face with towards solid-state light emitting element, which is provided with the groove of a V-type or class V-type;
Wherein, the both side surface of this groove is respectively towards the utilization rate of solid-state light emitting element with enhancement light;
Wherein, when this optical element and at least one solid-state light emitting element collocation use, the light that this at least one solid-state light emitting element sent is incident in the optical bodies via the surface of this groove, throw outward through bright dipping again, with produce asymmetric and shape like the non-light shape of its maximum light intensity of the bat wing at zero point.
2. according to claim 1 a described optical element, it is characterized in that the groove of this incidence surface is to be formed by two inclined-planes.
3. according to claim 2 a described optical element, it is characterized in that this two inclined-plane is a kind of in two symmetrical inclined-planes or the asymmetric inclined-plane.
4. according to claim 1 a described optical element, it is characterized in that the V-type top of the groove of this incidence surface is provided with an arc lead angle.
5. according to claim 1 a described optical element, it is characterized in that this groove is to be combined to form by multistage straight line or curve.
6. according to claim 1 a described optical element, it is characterized in that this groove is formed by curved surface a kind of in parabola, ellipsoid, the aspheric surface.
7. according to claim 1 a described optical element, it is characterized in that, is to form a kind of kenel in the combination that overlaps kenel, relativity shift kenel, relative tilt kenel or above various kenels between the optical axis of this incidence surface and the optical axis of exiting surface.
8. according to claim 1 a described optical element, it is characterized in that, this optical element comprises a plurality of exiting surfaces and corresponding incidence surface, and these a plurality of exiting surfaces and corresponding incidence surface are with array or are staggered on optical element to form a combined optical element.
9. according to claim 1 a described optical element, it is characterized in that an exiting surface of this optical element and two solid-state light emitting elements of a corresponding incidence surface collocation.
10. according to claim 1 a described optical element, it is characterized in that the central position of the curved surface of this exiting surface forms a recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910000084A CN101769500A (en) | 2009-01-05 | 2009-01-05 | Optical element of lightening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910000084A CN101769500A (en) | 2009-01-05 | 2009-01-05 | Optical element of lightening device |
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|---|---|
| CN101769500A true CN101769500A (en) | 2010-07-07 |
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| CN200910000084A Pending CN101769500A (en) | 2009-01-05 | 2009-01-05 | Optical element of lightening device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676160A (en) * | 2012-09-12 | 2014-03-26 | 台达电子工业股份有限公司 | Light splitting element |
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2009
- 2009-01-05 CN CN200910000084A patent/CN101769500A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676160A (en) * | 2012-09-12 | 2014-03-26 | 台达电子工业股份有限公司 | Light splitting element |
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