CN117906100A - Combined optical device and lighting lamp - Google Patents

Abstract

The invention discloses a combined optical device, which comprises a first optical element, a second optical element and a first reflecting part, wherein the first optical element comprises a first light-transmitting part with a first cavity and a first reflecting part encircling the periphery of the first light-transmitting part; the second optical element surrounds the peripheral edge of the top of the first reflecting part and forms a light outlet on the top of the first optical element, the second optical element at least comprises a second light-transmitting part with a second cavity, the inner surface of the second cavity forms a second light-entering surface, and the outer surface of the second light-transmitting part forms a second light-exiting surface; after the light rays emitted by the first light source are emitted through the first light incident surface, one part of the light rays are emitted out of the light emitting opening through the first light emitting surface, and the other part of the light rays are reflected through the first total reflection surface and are emitted out of the light emitting opening; after the light rays emitted by the second light source are emitted through the second light incident surface, at least part of the light rays are emitted through the second light emitting surface. Is suitable for accent lighting and floodlighting.

Description

Combined optical device and lighting lamp

Technical Field

The invention relates to the technical field of illumination, in particular to a combined optical device and an illumination lamp.

Background

The beam angle of the spotlight is smaller, usually within 60 degrees, and the beam angle of the common spotlight is 15 degrees, 30 degrees, 45 degrees and the like, and is mainly used for small-angle accent lighting and highlighting the brightness of an illuminated area and the outline of an illuminated object, so that the illuminated object is more bright and beautiful, and is applied to lighting scenes such as exhibition halls, clothing and clothing stores and the like. Compared with a spotlight, the beam angle of the down lamp is generally larger, more than 60 degrees, more than 90 degrees and 120 degrees are commonly used, the illumination range is larger, and the down lamp is mainly used for large-angle floodlight illumination or foundation illumination, for example, the down lamp is applied to illumination scenes such as living rooms, conference halls and the like. However, the above lighting fixture can be only suitable for a specific scene, the lighting mode is single, and the application scene is limited. When a user arranges a lighting scene indoors, for example, a wall painting and the like, a large-area scene space such as a corridor passageway, a living room and the like is multipurpose to a down lamp, different types of lamps are needed to be matched for use, and the applied lamps are more and are more complicated to arrange.

Disclosure of Invention

In order to solve the technical problems, an object of the present invention is to provide a combined optical device which is suitable for accent lighting and floodlighting scenes and has better illumination effect; it is another object of the invention to provide a lighting fixture with such a combined optics.

To this end, the invention provides a combination optical device comprising:

The first optical element comprises a first light transmission part and a first reflection part which is arranged around the periphery of the first light transmission part, wherein the first light transmission part is provided with a first cavity for placing a first light source, the inner surface of the first cavity forms a first light incident surface, the outer surface of the first light transmission part forms a first light emergent surface, and the first reflection part is provided with a first total reflection surface;

The second optical element is arranged around the peripheral edge of the top of the first reflecting part and surrounds a light outlet on the top of the first optical element, the second optical element at least comprises a second light-transmitting part, the second light-transmitting part is provided with a second cavity for placing a second light source, the inner surface of the second cavity forms a second light-in surface, and the outer surface of the second light-transmitting part forms a second light-out surface;

After the light rays emitted by the first light source are emitted through the first light incident surface, one part of the light rays are emitted out of the light emitting opening through the first light emitting surface, and the other part of the light rays are reflected through the first total reflection surface and are emitted out of the light emitting opening; after the light rays emitted by the second light source are emitted through the second light incident surface, at least part of the light rays are emitted through the second light emitting surface.

Preferably, the first reflecting part and the first light transmitting part enclose a light mixing cavity together, the light mixing cavity is positioned at the lower part of the light outlet and communicated with the light outlet, and the first light transmitting part protrudes upwards and is accommodated in the light mixing cavity.

Preferably, the outer peripheral surface of the first reflecting portion is provided with a plurality of ribs, the plurality of ribs are uniformly arranged along the circumferential direction, grooves are formed between two adjacent ribs, each rib extends along the up-down direction and is provided with two reflecting surfaces arranged at an angle, and the reflecting surfaces of the plurality of ribs jointly form the first total reflecting surface.

Preferably, the first light incident surface includes a top surface and a side surface connected to the periphery of the top surface, a part of light emitted by the first light source is emitted out of the light outlet through the first light emergent surface after being emitted in through the top surface, and a part of light is emitted out of the light outlet after being emitted in through the side surface and reflected by the first total reflection surface.

Preferably, the top surface is planar and the side surfaces are free-form surfaces.

Preferably, the second light incident surface is concavely arranged on the second light transmitting portion, the second light emergent surface is convexly arranged on the second light transmitting portion, and the second light incident surface and the second light emergent surface are hyperboloid.

Preferably, the second optical element includes a second reflecting portion surrounding the second light transmitting portion, the second reflecting portion has a second total reflecting surface, and after light emitted by the second light source enters through the second light incident surface, a part of the light exits through the second light exit surface, and another part of the light exits after being reflected by the second total reflecting surface.

Preferably, the first optical element is a TIR lens or reflector and the second optical element is a hyperboloid lens.

Preferably, the first optical element and the second optical element are both TIR lenses.

Preferably, the first optical element is a reflector and the second optical element is a TIR lens.

Preferably, the first optical element is integrally formed with the second optical element.

The invention also provides a lighting lamp, which comprises any one of the combined optical devices in the technical scheme.

Preferably, the lighting fixture comprises a housing and a light source assembly, the housing comprises a bottom wall, a peripheral side wall and a containing space surrounded by the bottom wall and the peripheral side wall together, the peripheral side wall is provided with a supporting wall extending inwards in the radial direction, the combined optical device is arranged in the containing space, the light source assembly comprises a first light source and a second light source, the first light source is arranged on the bottom wall and is contained in a first cavity of the first optical element, and the second light source is arranged on the supporting wall and is contained in a second cavity of the second optical element.

Preferably, the first light source comprises a first substrate and at least one first light-emitting element arranged on the first substrate and electrically connected with the first substrate, and the second light source comprises a second substrate and a plurality of second light-emitting elements arranged on the second substrate and electrically connected with the second substrate.

Preferably, the support wall forms a receiving groove in the top of the housing, in which the second optical element portion of the combined optical device is received.

Preferably, the lighting lamp is a down lamp or a spot lamp.

Compared with the prior art, the invention has the following beneficial effects:

By arranging the first optical element, the first optical element is provided with a first light transmission part and a first reflection part, the first light transmission part is provided with a first cavity for placing the first light source, and part of light rays emitted by the first light source are reflected by the total reflection surface of the first reflection part and then are emitted; the first optical element may be used to highlight a scene at a small angle;

By arranging the second optical element, the second optical element is provided with a second light transmission part, the second light transmission part is provided with a second cavity for placing a second light source, and at least part of light rays emitted by the second light source are emitted through a second light emitting surface after being emitted through a second light incident surface; the second optical element may be used to flood illuminate a scene at a large angle;

The second optical element is arranged around the peripheral edge of the top of the first reflecting part and surrounds the top of the first optical element to form a light outlet, so that part of light rays emitted by the first light source and the second light source are mixed at the light outlet, dark areas and shadows are not easy to occur, and the lighting effect is better.

Drawings

FIG. 1 is an exploded view of a lighting fixture according to a preferred embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view of a lighting fixture according to a preferred embodiment 1 of the present invention;

FIG. 3 is a light path diagram of a lighting fixture according to a preferred embodiment 1 of the present invention;

FIG. 4 is a perspective view of a combined optical device according to preferred embodiment 1 of the present invention;

FIG. 5 is a cross-sectional view of a combined optical device according to preferred embodiment 1 of the present invention;

FIG. 6 is an exploded view of a lighting fixture according to preferred embodiment 2 of the present invention;

FIG. 7 is a cross-sectional view of a lighting fixture according to preferred embodiment 2 of the present invention;

FIG. 8 is a light path diagram of a lighting fixture according to preferred embodiment 2 of the present invention;

FIG. 9 is a perspective view of a combined optical device according to preferred embodiment 2 of the present invention;

FIG. 10 is an enlarged view of a portion at A shown in FIG. 9;

FIG. 11 is a cross-sectional view of a combined optical device in accordance with preferred embodiment 2 of the present invention;

FIG. 12 is an exploded view of a lighting fixture according to preferred embodiment 3 of the present invention;

FIG. 13 is a cross-sectional view of a lighting fixture according to preferred embodiment 3 of the present invention;

FIG. 14 is an optical path diagram of a lighting fixture according to preferred embodiment 3 of the present invention;

FIG. 15 is a perspective view of a combination optical device according to preferred embodiment 3 of the present invention;

FIG. 16 is a cross-sectional view of a combined optical device according to preferred embodiment 3 of the present invention;

FIG. 17 is an exploded view of a lighting fixture according to preferred embodiment 4 of the present invention;

FIG. 18 is a cross-sectional view of a lighting fixture according to preferred embodiment 4 of the present invention;

FIG. 19 is an optical path diagram of a lighting fixture according to preferred embodiment 4 of the present invention;

FIG. 20 is a perspective view of a combination optical device according to preferred embodiment 4 of the present invention;

FIG. 21 is a cross-sectional view of a combined optical device according to preferred embodiment 4 of the present invention;

wherein the reference numerals are as follows:

100. A lighting fixture;

10. a combination optic;

1. A first optical element; 11. a first light-transmitting portion; 111. a first chamber; 112. a first light incident surface; 1121. a top surface; 1122. a side surface; 113. a first light-emitting surface; 12. a first reflection section; 121. a first total reflection surface; 122. a rib; 123. a groove; 124. a reflecting surface; 13. a light mixing cavity;

2. A second optical element; 21. a second light-transmitting portion; 211. a second chamber; 212. a second light incident surface; 213. a second light-emitting surface; 22. a second reflection part; 221. a second total reflection surface;

3. A light outlet;

20. a housing; 201. a bottom wall; 202. a peripheral sidewall; 203. an accommodating space; 204. a support wall; 205. a receiving groove;

30. A light source assembly; 301. a first light source; 3011. a first substrate; 3012. a first light emitting element; 302. a second light source; 3021. a second substrate; 3022. and a second light emitting element.

Detailed Description

It is to be understood that, according to the technical solution of the present invention, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.

In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms center, upper, lower, horizontal, top, bottom, inner, outer, circumferential, radial, etc. indicate an orientation or a positional relationship based on that shown in the drawings, only for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated unless otherwise explicitly specified and defined. Thus, a feature defining a first or second may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, a plurality means two or more.

In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms mounted, connected, and connected should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be mechanically connected, can be directly connected or can be indirectly connected through an intermediate medium, and can be communicated with each other. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

The structural components and the working principle of the illumination lamp and the combined optical device in embodiment 1 will be specifically described with reference to fig. 1 to 5; the structural composition and operation principle of the illumination lamp and the combined optical device in embodiment 2 will be specifically described with reference to fig. 6 to 11; the structural composition and operation principle of the illumination lamp and the combined optical device in embodiment 3 will be specifically described with reference to fig. 12 to 16; the structural composition and operation principle of the illumination lamp and the combined optical device in embodiment 4 are specifically described with reference to fig. 17 to 21.

Example 1

Referring to fig. 1, a lighting fixture 100 includes a combination optical device 10, a housing 20, and a light source assembly 30. The lighting fixture 100 of the present embodiment is exemplified by a down lamp, and in some embodiments, the type of the lighting fixture is not limited to the down lamp, but may be a spotlight, and is not particularly limited.

As shown in fig. 1 and 2, the housing 20 includes a bottom wall 201, a peripheral side wall 202, and a receiving space 203 defined by the bottom wall 201 and the peripheral side wall 202, the peripheral side wall 202 having a support wall 204 extending radially inward, and the combined optical device 10 being mounted in the receiving space 203.

The light source assembly 30 includes a first light source 301 and a second light source 302, the first light source 301 being disposed on the bottom wall 201 and the second light source 302 being disposed on the support wall 204. Specifically, the first light source 301 includes a first substrate 3011, a first light emitting device 3012 disposed on the first substrate 3011 and electrically connected to the first substrate 3011, and the second light source 302 includes a second substrate 3021, and a plurality of second light emitting devices 3022 disposed on the second substrate 3021 and electrically connected to the second substrate 3021. The first substrate 3011 and the second substrate 3021 are both PCB boards, in some embodiments, the first substrate 3011 and the second substrate 3021 may also be aluminum substrates, and compared with PCB boards, the aluminum substrates have better heat dissipation performance, and the aluminum substrates are in heat-conducting contact with the housing, so that heat can be transferred to the housing, and finally emitted to the external environment through the housing, so that the heat dissipation effect is better, and the invention is not limited. The first substrate 3011 is connected to the bottom wall 201 of the housing 20 by a screw, the second substrate 3021 is connected to the supporting wall 204 of the housing 20 by a screw, in some embodiments, the connection structure between the first substrate 3011 and the housing 20 and the connection structure between the second substrate 3021 and the housing 20 may be a rivet, a weld, a snap connection, or the like, for example, rivet posts (or snap-fit portions) are provided on the bottom wall 201 and the supporting wall 204 of the housing 20, respectively, and holes (or snap-fit portions) that cooperate with the rivet posts are provided on the first substrate 3011 and the second substrate 3021, respectively, and when the first substrate 3011 and the second substrate 3021 are mounted in the housing 20, respectively, the rivet posts on the bottom wall 201 pass through the holes on the first substrate 3011, and the rivet posts on the supporting wall 204 pass through the holes (or snap-fit portions and snap-fit portions) on the second substrate 3021, respectively, and the corresponding rivet posts are heat-melted by a rivet device, so that the first substrate 3011 is fixed to the bottom wall 201 of the housing 20, and the second substrate 3021 is fixed to the supporting wall 204, without limitation. The first light emitting element 3012 is an LED bead welded on the first substrate 3011, the second light emitting element 3022 is an LED bead welded on the second substrate 3021, and in some embodiments, the first light emitting element 3012 and the second light emitting element 3022 may also be other solid state light emitting elements, such as an SMD light source, a COB light source, and the like, which are not limited in particular. Of course, some necessary electrical components (not shown) may be included, such as a driving power source, a control module, and connection wires for supplying power to the first substrate 3011 and the second substrate 3021, respectively or simultaneously. The control module may be respectively connected to the first substrate 3011 and the second substrate 3021 by signals, so that the magnitude of the current and/or the voltage flowing through the first substrate 3011 and the second substrate 3021 may be controlled, so as to adjust the brightness of the first light emitting element 3012 and the second light emitting element 3022, or control the turn-on and turn-off of the respective circuits of the first substrate 3011 and the second substrate 3021, so as to control the turn-on and turn-off of the respective first light emitting element 3012 and the second light emitting element 3022, which is not particularly limited.

Referring to fig. 4 and 5, the combined optical device 10 includes a first optical element 1 and a second optical element 2. For convenience of manufacture and simplicity of the number of parts, the composite optical device 10 of the present embodiment is integrally injection molded of transparent plastic. In some embodiments, the first optical element 1 and the second optical element 2 of the combined optical device 10 may also be separately injection molded, i.e. the first optical element 1 and the second optical element 2 may also be two separate parts, without limitation. In addition, the material of the combined optical device 10 may be PC plastic, PMMA, optical glass, or the like, and is not particularly limited. To facilitate assembly of the combined optical device 10, as shown in connection with fig. 2, the support wall 204 is formed with a receiving groove 205 at the top of the housing 20, and the second optical element 2 of the combined optical device 10 is partially received in the receiving groove 205. The first optical element 1 of the combined optical device 10 may be mounted in matching with the first substrate 3011 of the first light source 301, and the second optical element 2 of the combined optical device 10 may be mounted in matching with the second substrate 3021 of the second light source 302. Specifically, the positioning portions may be integrally formed on the combined optical device 10 at the time of manufacturing the combined optical device 10, for example, the positioning portions may be formed on the first optical element 1 and the second optical element 2, respectively, the positioning engaging portions that engage with the positioning portions of the combined optical device 10 may be provided on the bottom wall 201 and the support wall 204 of the housing 20, respectively, for example, the positioning portions may be positioning posts, and the positioning engaging portions may be positioning holes, so as to fit the combined optical device 10 into the housing 20. In some embodiments, the positioning portion and the positioning mating portion are not limited to the mating structure of the positioning post and the positioning hole, but may be a fastening structure or a screw structure, which is not limited in particular.

The first optical element 1 includes a first light-transmitting portion 11 and a first reflecting portion 12 disposed around the outer periphery of the first light-transmitting portion 11, the first light-transmitting portion 11 has a first cavity 111 for accommodating the first light source 301, an inner surface of the first cavity 111 forms a first light-incident surface 112, an outer surface of the first light-transmitting portion 11 forms a first light-emergent surface 113, and the first reflecting portion 12 has a first total reflecting surface 121. Specifically, in the present embodiment, the first optical element 1 is a TIR lens, and the first light incident surface 112 includes a top surface 1121 and a side surface 1122 connected to an outer periphery of the top surface 1121. Where the top surface 1121 is planar and the side surface 1122 is a free-form surface. After the combination optical device 10 is assembled into the housing 20, the first light emitting element 3012 of the first light source 301 is housed in the first cavity 111 of the first optical element 1.

The second optical element 2 is disposed around the top peripheral edge of the first reflecting portion 12 and encloses a light outlet 3 at the top of the first optical element 1, the second optical element 2 includes a second light-transmitting portion 21, the second light-transmitting portion 21 has a second cavity 211 for placing the second light source 302, an inner surface of the second cavity 211 forms a second light-incident surface 212, and an outer surface of the second light-transmitting portion 21 forms a second light-emergent surface 213. Specifically, in the present embodiment, the second optical element 2 is a hyperboloid lens, the second light incident surface 212 of which is concavely disposed on the second light transmitting portion 21, the second light emergent surface 213 of which is convexly disposed on the second light transmitting portion 21, and the second light incident surface 212 and the second light emergent surface 213 are both hyperboloids. After the combination optical device 10 is assembled into the housing 20, the second light emitting element 3022 of the second light source 302 is housed in the second cavity 211 of the second optical element 2.

Referring to fig. 3 and 5, a portion of the light emitted from the first light source 301 enters through the top surface 1121 and exits the light outlet 3 through the first light exit surface 113, and a portion of the light enters through the side surface 1122 and exits the light outlet 3 after being reflected by the first total reflection surface 121. After the light emitted by the second light source 302 enters through the second light incident surface 212, the light exits through the second light exit surface 213. Because the first optical element 1 is a TIR lens, based on the principle of total internal reflection of the TIR lens, the light emitted by the first light source 301 can be condensed after being processed by the first optical element 1, and the efficiency of the TIR lens can reach more than 90%, so that the TIR lens has the advantages of high light energy utilization rate, less light loss, small light collecting area, good uniformity and the like, and can be used for small-angle key illumination scenes. The second optical element 2 is a hyperbolic lens, and after the light rays emitted by the second light source 302 are processed by the second optical element 2, the light rays can be outwards diffused, and the second optical element can be used for a large-angle floodlighting scene; in addition, some light rays emitted by the first light source 301 and the second light source 302 are mixed at the light outlet 3, so that dark areas and shadows are not easy to occur, and the lighting effect is better.

It should be noted that, as can be seen from the foregoing description, the first light source 301 and the second light source 302 can be operated independently or all on under the driving of the control module of the lighting fixture, and only when the first light source 301 is operated, the first light source 301 can provide small-angle accent lighting, and the illuminated area is accurately highlighted, so that the first light source and the second light source are used as a spotlight, and are suitable for accent lighting scenes; when only the second light source 302 is operated, the high-angle floodlight can be provided, and the high-angle floodlight can be used as a down light, a floodlight and the like, and is suitable for a large-area floodlight scene. The first light source 301 and the second light source 302 can be turned on simultaneously to provide flood illumination and area accent illumination, so that the application scene is not limited, and the illumination effect is better.

Example 2

Referring to fig. 6 to 11, the same parts as those of the foregoing embodiment 1 are not repeated, and the difference from the foregoing embodiment 1 is that the first optical element 1 in embodiment 2 is not a TIR lens but is replaced by a micro-prism reflector. The second optical element 2 is still a hyperboloid lens.

Referring to fig. 9 and 11, the first optical element 1 includes a first light-transmitting portion 11 and a first reflecting portion 12 disposed around the outer periphery of the first light-transmitting portion 11, the first light-transmitting portion 11 includes a first cavity 111 for placing the first light source 301, an inner surface of the first cavity 111 forms a first light-incident surface 112, an outer surface of the first light-transmitting portion 11 forms a first light-emergent surface 113, and the first reflecting portion 12 includes a first total reflection surface 121. Specifically, in the present embodiment, the first optical element 1 is a micro-prism reflector, and the first light incident surface 112 includes a top surface 1121 and a side surface 1122 connected to the outer periphery of the top surface 1121. Where the top surface 1121 is planar and the side surface 1122 is a free-form surface. As shown in connection with fig. 7, after the combination optical device 10 is assembled into the housing 20, the first light emitting element 3012 of the first light source 301 is housed in the first cavity 111 of the first optical element 1.

Referring to fig. 10, the outer peripheral surface of the first reflecting portion 12 is provided with a plurality of ribs 122, the ribs 122 are uniformly arranged along the circumferential direction, a groove 123 is formed between two adjacent ribs 122, each rib 122 extends along the up-down direction and has two reflecting surfaces 124 arranged at an angle, and the reflecting surfaces 124 of the ribs 122 together form a first total reflecting surface 121. Wherein the angle between the reflective surfaces 124 of rib 122 may be 45, or may be 90 or 120, preferably in the range of 45 to 120. The smaller the angle, the more the ribs 122 are arranged, the denser the reflection effect is.

The second optical element 2 is disposed around the top peripheral edge of the first reflecting portion 12 and encloses a light outlet 3 at the top of the first optical element 1, the second optical element 2 includes a second light-transmitting portion 21, the second light-transmitting portion 21 has a second cavity 211 for placing the second light source 302, an inner surface of the second cavity 211 forms a second light-incident surface 212, and an outer surface of the second light-transmitting portion 21 forms a second light-emergent surface 213. Specifically, in the present embodiment, the second optical element 2 is a hyperboloid lens, the second light incident surface 212 of which is concavely disposed on the second light transmitting portion 21, the second light emergent surface 213 of which is convexly disposed on the second light transmitting portion 21, and the second light incident surface 212 and the second light emergent surface 213 are both hyperboloids. After the combination optical device 10 is assembled into the housing 20, the second light emitting element 3022 of the second light source 302 is housed in the second cavity 211 of the second optical element 2.

Referring to fig. 11, the first reflective portion 12 and the first transmissive portion 11 together define a light mixing cavity 13, the light mixing cavity 13 is located at a lower portion of the light outlet 3 and is communicated with the light outlet 3, and the first transmissive portion 11 protrudes upward and is accommodated in the light mixing cavity 13. The first reflecting portion 12 is shaped like a cup body, and the first light transmitting portion 11 is shaped like a cup bottom protruding upward into the cup body.

Referring to fig. 8 and 11, a portion of the light emitted from the first light source 301 enters through the top surface 1121 and exits the light outlet 3 through the first light exit surface 113, and a portion of the light enters through the side surface 1122 and exits the light outlet 3 after being reflected by the first total reflection surface 121. After the light emitted by the second light source 302 enters through the second light incident surface 212, the light exits through the second light exit surface 213. Because the first optical element 1 is a micro-prism reflector, the light rays emitted by the first light source 301 can be condensed after being processed by the first optical element 1, and the light-emitting device has the advantages of high light energy utilization rate, less light loss, good light emitting uniformity and the like, and can be used for a small-angle key illumination scene, the second optical element 2 is a hyperboloid lens, the light rays emitted by the second light source 302 can be outwards diffused after being processed by the second optical element 2, and the second optical element can be used for a large-angle floodlighting scene; in addition, some light rays emitted by the first light source 301 and the second light source 302 are mixed at the light outlet 3, so that dark areas and shadows are not easy to occur, and the lighting effect is better.

In embodiment 1, the first optical element 1 adopts the TIR lens, and the light control effect of the first optical element 1 adopting the micro-prism reflector is not much different from that of the TIR lens, but the lens manufacturing material can be saved, and the cost can be reduced.

Example 3

Referring to fig. 12 to 16, the same parts as those of the foregoing embodiment 1 will not be repeated, and the difference from the foregoing embodiment 1 is that the first optical element 1 in embodiment 3 is still a TIR lens, and the second optical element 2 is not a hyperboloid lens but is replaced by a TIR lens.

Referring to fig. 15 and 16, the first optical element 1 includes a first light-transmitting portion 11 and a first reflecting portion 12 disposed around the outer periphery of the first light-transmitting portion 11, the first light-transmitting portion 11 includes a first cavity 111 for accommodating the first light source 301, an inner surface of the first cavity 111 forms a first light-incident surface 112, an outer surface of the first light-transmitting portion 11 forms a first light-emergent surface 113, and the first reflecting portion 12 includes a first total reflection surface 121. Specifically, in the present embodiment, the first optical element 1 is a TIR lens, and the first light incident surface 112 includes a top surface 1121 and a side surface 1122 connected to an outer periphery of the top surface 1121. Where the top surface 1121 is planar and the side surface 1122 is a free-form surface. As shown in fig. 13, after the combination optical device 10 is assembled into the housing 20, the first light emitting element 3012 of the first light source 301 is housed in the first cavity 111 of the first optical element 1.

The second optical element 2 is arranged around the top peripheral edge of the first reflecting portion 12 and surrounds a light outlet 3 on the top of the first optical element 1, the second optical element 2 comprises a second light transmitting portion 21 and a second reflecting portion 22 arranged around the periphery of the second light transmitting portion 21, the second light transmitting portion 21 is provided with a second cavity 211 for placing a second light source 302, the inner surface of the second cavity 211 forms a second light inlet surface 212, the outer surface of the second light transmitting portion 21 forms a second light outlet surface 213, and the second reflecting portion 22 is provided with a second total reflecting surface 221. Specifically, in the present embodiment, the second optical element 2 is a TIR lens, the structure of the second light incident surface 212 is similar to that of the first light incident surface 112 of the first optical element 1, and the second light incident surface 212 has a top surface and a side surface, the top surface of the second light incident surface 212 is substantially a plane, the side surface of the second light incident surface 212 is a plane, or may be a free curved surface, and the second light incident surface 212 surrounds the top of the first optical element 1. After the combination optical device 10 is assembled into the housing 20, the second light emitting element 3022 of the second light source 302 is housed in the second cavity 211 of the second optical element 2.

Referring to fig. 14 and 16, a portion of the light emitted from the first light source 301 enters through the top surface 1121 of the first light incident surface 112 and exits the light exit 3 through the first light exit surface 113, and a portion of the light enters through the side surface 1122 and exits the light exit 3 after being reflected by the first total reflection surface 121. A portion of the light emitted by the second light source 302 is emitted through the second light emitting surface 213 after being emitted through the top surface of the second light incident surface 212, and a portion of the light is emitted through the second total reflection surface 221 of the second reflection portion 22 after being emitted through the side surface of the second light incident surface 212. Because the first optical element 1 and the second optical element 2 are both TIR lenses, the light emitted by the first light source 301 can be condensed after being processed by the first optical element 1, and the light source has the advantages of high light energy utilization rate, less light loss, good light emitting uniformity and the like, and can be used for small-angle key illumination scenes. After the light rays emitted by the second light source 302 are processed by the second optical element 2, the light rays can be condensed, a circle of aperture can be formed on the periphery of the first optical element 1, the defect of small-angle illumination of the first optical element 1 is overcome, and the second optical element 2 can be used for large-angle floodlighting scenes; in addition, the light rays emitted by the first light source 301 and the second light source 302 can be mixed outside the light outlet 3, so that dark areas and shadows are not easy to occur, and the lighting effect is better.

It should be noted that, compared to the hyperbolic lens used for the second optical element 2 in the foregoing embodiment 1, the illumination range of the TIR lens used for the second optical element 2 in embodiment 3 is slightly smaller, but is more advantageous in terms of overall illumination brightness and uniformity of overall illumination. The first optical element 1 of embodiment 3 has higher light efficiency by using a TIR lens than the first optical element 1 of embodiment 2 described above by using a micro-prismatic reflector.

Example 4

Referring to fig. 17 to 21, the same parts as those of the foregoing embodiment 3 are not repeated, and the difference from the foregoing embodiment 3 is that the first optical element 1 in embodiment 4 is not a TIR lens but is replaced by a micro-prism reflector, and the second optical element 2 is still a TIR lens.

Referring to fig. 20 and 21, the first optical element 1 includes a first light-transmitting portion 11 and a first reflecting portion 12 disposed around the outer periphery of the first light-transmitting portion 11, the first light-transmitting portion 11 includes a first cavity 111 for accommodating the first light source 301, an inner surface of the first cavity 111 forms a first light-incident surface 112, an outer surface of the first light-transmitting portion 11 forms a first light-emergent surface 113, and the first reflecting portion 12 includes a first total reflection surface 121. Specifically, in the present embodiment, the first optical element 1 is a micro-prism reflector, and the first light incident surface 112 includes a top surface 1121 and a side surface 1122 connected to the outer periphery of the top surface 1121. Where the top surface 1121 is planar and the side surface 1122 is a free-form surface. As shown in fig. 18, after the combination optical device 10 is assembled into the housing 20, the first light emitting element 3012 of the first light source 301 is housed in the first cavity 111 of the first optical element 1.

The same portion as the foregoing embodiment 2 is that the outer peripheral surface of the first reflecting portion 12 is provided with a plurality of ribs 122, the plurality of ribs 122 are uniformly arranged in the circumferential direction, grooves 123 are formed between adjacent two ribs 122, each rib 122 extends in the up-down direction and has two reflecting surfaces 124 provided at an angle, and the reflecting surfaces 124 of the plurality of ribs 122 together constitute the first total reflecting surface 121.

The second optical element 2 is arranged around the top peripheral edge of the first reflecting portion 12 and surrounds a light outlet 3 on the top of the first optical element 1, the second optical element 2 comprises a second light transmitting portion 21 and a second reflecting portion 22 arranged around the periphery of the second light transmitting portion 21, the second light transmitting portion 21 is provided with a second cavity 211 for placing a second light source 302, the inner surface of the second cavity 211 forms a second light inlet surface 212, the outer surface of the second light transmitting portion 21 forms a second light outlet surface 213, and the second reflecting portion 22 is provided with a second total reflecting surface 221. Specifically, in the present embodiment, the second optical element 2 is a TIR lens, the structure of the second light incident surface 212 is similar to that of the first light incident surface 112 of the first optical element 1, and the second light incident surface 212 has a top surface and a side surface, the top surface of the second light incident surface 212 is substantially a plane, the side surface of the second light incident surface 212 is a plane, or may be a free curved surface, and the second light incident surface 212 surrounds the top of the first optical element 1. After the combination optical device 10 is assembled into the housing 20, the second light emitting element 3022 of the second light source 302 is housed in the second cavity 211 of the second optical element 2.

Referring to fig. 18, the first reflecting portion 12 and the first light-transmitting portion 11 together define a light mixing cavity 13, the light mixing cavity 13 is located at the lower portion of the light outlet 3 and is communicated with the light outlet 3, and the first light-transmitting portion 11 protrudes upward and is accommodated in the light mixing cavity 13. The first reflecting portion 12 is shaped like a cup body, and the first light transmitting portion 11 is shaped like a cup bottom protruding upward into the cup body.

Referring to fig. 19 and 21, a portion of the light emitted from the first light source 301 enters through the top surface 1121 and exits the light outlet 3 through the first light exit surface 113, and a portion of the light enters through the side surface 1122 and exits the light outlet 3 after being reflected by the first total reflection surface 121. A portion of the light emitted by the second light source 302 is emitted through the second light emitting surface 213 after being emitted through the top surface of the second light incident surface 212, and a portion of the light is emitted through the second total reflection surface 221 of the second reflection portion 22 after being emitted through the side surface of the second light incident surface 212. Because the first optical element 1 is a micro-prism reflector, the light emitted by the first light source 301 can be condensed after being processed by the first optical element 1, and the light source has the advantages of high light energy utilization rate, less light loss, good light emitting uniformity and the like, and can be used for a small-angle key illumination scene, the second optical element 2 is a TIR lens, the light emitted by the second light source 302 can be condensed after being processed by the second optical element 2, a circle of aperture can be formed at the periphery of the first optical element 1, the defect of small-angle illumination of the first optical element 1 is overcome, and the arrangement of the second optical element 2 can be used for a large-angle floodlighting scene; in addition, the light rays emitted by the first light source 301 and the second light source 302 can be mixed outside the light outlet 3, so that dark areas and shadows are not easy to occur, and the lighting effect is better.

It should be noted that, compared with the first optical element 1 and the second optical element 2 in the foregoing embodiment 1 using a TIR lens, the first optical element 1 of this example uses a micro-prism reflector, which is not much different from the TIR lens in light control effect, but can save lens manufacturing materials and reduce cost, and the second lens 2 uses a TIR lens, which has a slightly smaller illumination range, but is more advantageous in overall illumination brightness and overall illumination uniformity. The second lens of this example uses a TIR lens, while the illumination range is slightly smaller, but is more advantageous in terms of overall illumination brightness and overall illumination uniformity than the second lens 2 of the foregoing example 2 uses a hyperbolic lens. Compared with the first optical element 1 in the foregoing embodiment 3 using a TIR lens, the first optical element 1 in this embodiment uses a micro-prism reflector, which is not much different from the TIR lens in light control effect, but can save lens manufacturing materials and reduce cost.

The technical scope of the present invention is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and these changes and modifications should be included in the scope of the present invention.

Claims (16)

1. A combination optical device, comprising:

A first optical element (1) comprising a first light-transmitting portion (11) and a first reflecting portion (12) circumferentially arranged on the periphery of the first light-transmitting portion (11), wherein the first light-transmitting portion (11) is provided with a first cavity (111) for placing a first light source (301), the inner surface of the first cavity (111) forms a first light-in surface (112), the outer surface of the first light-transmitting portion (11) forms a first light-out surface (113), and the first reflecting portion (12) is provided with a first total reflecting surface (121);

The second optical element (2) is arranged around the top peripheral edge of the first reflecting part (12) and surrounds a light outlet (3) at the top of the first optical element (1), the second optical element (2) at least comprises a second light transmission part (21), the second light transmission part (21) is provided with a second cavity (211) for placing a second light source (302), the inner surface of the second cavity (211) forms a second light inlet surface (212), and the outer surface of the second light transmission part (21) forms a second light outlet surface (213);

After the light rays emitted by the first light source (301) are emitted through the first light incident surface (112), one part of the light rays are emitted out of the light outlet (3) through the first light emitting surface (113), and the other part of the light rays are reflected through the first total reflection surface (121) and are emitted out of the light outlet (3); after the light rays emitted by the second light source (302) are emitted through the second light incident surface (212), at least part of the light rays are emitted through the second light emitting surface (213).

2. The combination optical device of claim 1, wherein: the first reflecting part (12) and the first light-transmitting part (11) jointly enclose a light mixing cavity (13), the light mixing cavity (13) is positioned at the lower part of the light outlet (3) and communicated with the light outlet (3), and the first light-transmitting part (11) protrudes upwards and is contained in the light mixing cavity (13).

3. The combination optical device of claim 2, wherein: the outer peripheral surface of the first reflecting portion (12) is provided with a plurality of ribs (122), the ribs (122) are uniformly arranged along the circumferential direction, grooves (123) are formed between two adjacent ribs (122), each rib (122) extends along the up-down direction and is provided with two reflecting surfaces (124) which are arranged at an angle, and the reflecting surfaces (124) of the ribs (122) jointly form the first total reflecting surface (121).

4. The combination optical device of claim 1, wherein: the first light incident surface (112) comprises a top surface (1121) and a side surface (1122) connected to the periphery of the top surface (1121), a part of light emitted by the first light source (301) is emitted out of the light outlet (3) through the first light emergent surface (113) after being emitted in through the top surface (1121), and a part of light is emitted out of the light outlet (3) after being emitted in through the side surface (1122) and reflected by the first total reflection surface (121).

5. The combination optical device of claim 4, wherein: the top surface (1121) is planar and the side surface (1122) is a free-form surface.

6. The combination optical device of claim 1, wherein: the second light incident surface (212) is concavely arranged on the second light transmitting part (21), the second light emergent surface (213) is convexly arranged on the second light transmitting part (21), and the second light incident surface (212) and the second light emergent surface (213) are hyperboloid.

7. The combination optical device of claim 1, wherein: the second optical element (2) comprises a second reflecting part (22) which is arranged around the periphery of the second light transmitting part (21), the second reflecting part (22) is provided with a second total reflecting surface (221), and after the light rays emitted by the second light source (302) are emitted through the second light incident surface (212), part of the light rays are emitted through the second light emitting surface (213), and the other part of the light rays are emitted after being reflected through the second total reflecting surface (221).

8. The combination optical device of claim 1, wherein: the first optical element (1) is a TIR lens or a reflector, and the second optical element (2) is a hyperboloid lens.

9. The combination optical device of claim 1, wherein: the first optical element (1) and the second optical element (2) are both TIR lenses.

10. The combination optical device of claim 1, wherein: the first optical element (1) is a reflector and the second optical element (2) is a TIR lens.

11. The combination optical device of claim 1, wherein: the first optical element (1) is integrally formed with the second optical element (2).

12. A lighting fixture, characterized by: comprising a combination optical device according to any one of claims 1 to 11.

13. A lighting fixture as recited in claim 12, wherein: the lighting fixture comprises a housing (20) and a light source assembly (30), wherein the housing (20) comprises a bottom wall (201), a peripheral side wall (202) and a containing space (203) which is jointly surrounded by the bottom wall (201) and the peripheral side wall (202), the peripheral side wall (202) is provided with a supporting wall (204) which extends inwards in the radial direction, the combined optical device is installed in the containing space (203), the light source assembly (30) comprises a first light source (301) and a second light source (302), the first light source (301) is arranged on the bottom wall (201) and is contained in a first cavity (111) of the first optical element (1), and the second light source (302) is arranged on the supporting wall (204) and is contained in a second cavity (211) of the second optical element (2).

14. A lighting fixture as recited in claim 13, wherein: the first light source (301) comprises a first substrate (3011), at least one first light-emitting element (3012) arranged on the first substrate (3011) and electrically connected with the first substrate (3011), and the second light source (302) comprises a second substrate (3021) and a plurality of second light-emitting elements (3022) arranged on the second substrate (3021) and electrically connected with the second substrate (3021).

15. A lighting fixture as recited in claim 13, wherein: the supporting wall (204) is formed with a receiving groove (205) at the top of the housing (20), and the second optical element (2) of the combined optical device is partially received in the receiving groove (205).

16. A lighting fixture as recited in claim 12, wherein: the lighting lamp is a down lamp or a spotlight.