CN107166334B - Optical element and lighting device using same - Google Patents

Optical element and lighting device using same Download PDF

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Publication number
CN107166334B
CN107166334B CN201710442578.6A CN201710442578A CN107166334B CN 107166334 B CN107166334 B CN 107166334B CN 201710442578 A CN201710442578 A CN 201710442578A CN 107166334 B CN107166334 B CN 107166334B
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China
Prior art keywords
light
lighting device
optical element
light emitting
recited
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CN201710442578.6A
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Chinese (zh)
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CN107166334A (en
Inventor
卜晨曦
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Suzhou Op Lighting Co Ltd
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Suzhou Op Lighting Co Ltd
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Priority to CN201710442578.6A priority Critical patent/CN107166334B/en
Publication of CN107166334A publication Critical patent/CN107166334A/en
Priority to PCT/CN2018/089294 priority patent/WO2018228207A1/en
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Publication of CN107166334B publication Critical patent/CN107166334B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Abstract

The invention discloses an optical element and a lighting device applying the same, wherein the optical element comprises a light incoming surface, two upper reflecting surfaces, two lower reflecting surfaces and two light outgoing surfaces, the light incoming surface is positioned at the bottom of the optical element and is surrounded to form an accommodating cavity for accommodating a light emitting unit, the two upper reflecting surfaces are positioned at the top of the optical element and are intersected with each other, the two lower reflecting surfaces are respectively connected with two opposite sides of the light incoming surface, the two light outgoing surfaces are positioned at two opposite sides of the light incoming surface, and the upper reflecting surfaces and the lower reflecting surfaces are matched to reflect light rays emitted by the light emitting unit positioned in the accommodating cavity to the light outgoing surfaces. The lighting device of the invention has the advantages that the optical element in the lighting device guides upward light rays emitted by the light emitting unit to two sides to form a side light emitting mode, emergent light on one side forms a main light emitting body of the lighting device, and emergent light on the other side directly hits on a wall or a ceiling to play a role of background light. The lighting device has the advantages of thin thickness, good light-emitting effect and attractive appearance.

Description

Optical element and lighting device using same
Technical Field
The invention belongs to the technical field of illumination, and particularly relates to an optical element and an illumination device using the same.
Background
The lens is used as a light distribution element and widely applied to lighting lamps such as ceiling lamps, wall lamps and the like. Ceiling lamp and wall lamp on the existing market mostly adopt the luminous form of straight following formula, and this kind of ceiling lamp often has the outward appearance thicker, has shortcomings such as dark space easily. However, most of the light distribution methods in the market adopt a light guide plate to replace a lens for light distribution, but the light guide plate has the disadvantages of high cost and low light efficiency, and the lighting lamp adopting the light guide plate has a single light-emitting form and is not beautiful enough.
In addition, in order to make the lighting effect more layered, some customers require ceiling lamps and wall lamps to have certain background light for irradiating on walls or ceilings, but direct-type light-emitting lamps or lamps adopting light guide plates are difficult to meet the requirements in the aspect.
Disclosure of Invention
The present invention is to solve the above problems, and an object of the present invention is to provide a lighting device having both main light emission and background light emission.
In order to achieve the above object, the present invention provides an optical element, which includes a light incident surface, two upper reflecting surfaces, two lower reflecting surfaces and two light emitting surfaces, wherein the light incident surface is located at the bottom of the optical element and encloses a receiving cavity for receiving a light emitting unit, the two upper reflecting surfaces are located at the top of the optical element and intersect with each other, the two lower reflecting surfaces are respectively connected to two opposite sides of the light incident surface, the two light emitting surfaces are located at two opposite sides of the light incident surface, and the upper reflecting surfaces and the lower reflecting surfaces are matched to reflect light rays emitted by the light emitting unit located in the receiving cavity to the light emitting surfaces.
Further, the light incident surface comprises an upper light incident surface and a side light incident surface, the upper light incident surface is the bottom surface of the accommodating cavity, and the side light incident surface is the side surface of the accommodating cavity.
Further, the two upper reflecting surfaces of the optical element form a V-shaped structure.
Further, the included angle of the V-shaped structure is 35-55 degrees.
Further, the lower reflecting surface is a curved surface and a convex surface.
Furthermore, the two light-emitting surfaces are parallel surfaces.
Furthermore, at least one of the two light-emitting surfaces is uniformly provided with a plurality of ribs along the extending direction of the optical element.
Further, the optical element is a stretching lens, and the shape of the stretching lens is arc, circle, rectangle or polygon.
Furthermore, at least one of the two light-emitting surfaces is provided with a light filtering film.
Furthermore, each light-emitting surface is connected with an upper reflecting surface and a lower reflecting surface.
In order to achieve the above object, the present invention provides a lighting device, comprising a chassis, a light emitting module disposed in the chassis, and an optical element disposed on the light emitting module, wherein the light emitting module comprises a light source board and a light emitting unit disposed on the light source board, and the light emitting unit is accommodated in the optical element.
Further, the chassis comprises a bottom wall and a side wall, and the first light emitting surface and the second light emitting surface are both located above the side wall in the vertical direction.
Furthermore, the lighting device further comprises a face cover arranged above the optical element, the two light-emitting surfaces are a first light-emitting surface and a second light-emitting surface, light emitted from the first light-emitting surface is transmitted out of the face cover, and light emitted from the second light-emitting surface is directly emitted out of the side face of the chassis.
Further, the mask includes a light-transmitting portion and a light-shielding portion, the light-shielding portion is located directly above a top region of the optical element, and the light-transmitting portion is located inside or outside the light-shielding portion.
Furthermore, the optical element is of an annular structure, an optical cavity is formed by the inner annular surface or the outer annular surface of the optical element, the bottom wall and the face mask, and light emitted from the first light emitting surface enters the optical cavity and is transmitted out by the face mask after being reflected for multiple times.
Further, the optical element is of an integrated structure or a splicing structure.
Compared with the prior art, the lighting device has the advantages that the upward light rays emitted by the light emitting unit are guided to the two sides by the optical element in the lighting device to form a side light emitting mode, the emergent light at one side forms the main light emitting body of the lighting device, and the emergent light at the other side directly hits on a wall or a ceiling to play a role of background light. The lighting device has the advantages of thin thickness, good light-emitting effect and attractive appearance.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a perspective view of a lighting device of embodiment 1 of the present invention;
fig. 2 is an exploded view of a lighting device of embodiment 1 of the present invention;
fig. 3 is an exploded view of another angle of the lighting device according to embodiment 1 of the present invention;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 5 is an enlarged partial view of the cross section of the lens shown in circled form in FIG. 4;
fig. 6 is a perspective view of a lighting device of embodiment 2 of the present invention;
fig. 7 is an exploded view of a lighting device of embodiment 2 of the present invention;
FIG. 8 is a cross-sectional view taken along line B-B in FIG. 6
Fig. 9 is a perspective view of a lighting device of embodiment 3 of the present invention;
fig. 10 is an exploded view of a lighting device of embodiment 3 of the present invention;
fig. 11 is a further exploded view of the lighting device of embodiment 3 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 5, the present embodiment provides a lighting device 100a, which includes a chassis 1a, a light emitting element 3a disposed in the chassis 1a, a lens 4a disposed on the light emitting element 3a, and a cover 2a disposed above the lens 4a, wherein the lens 4a has two light emitting surfaces and emits light toward two sides of the lens 4a, the light emitted from one side of the lens 4a is finally transmitted upward by the cover 2a to serve as a main light emitter of the lighting device 100a, and the light emitted from the other side of the lens 4a is emitted from an outer side of the lighting device 100a to serve as background light. The lighting device 100a of the present invention may be mounted on a ceiling (not shown) as a ceiling lamp, or may be mounted on a wall (not shown) as a wall lamp.
The following description is provided for each element and the connection relationship between the elements in the illumination device 100a according to the preferred embodiment of the present invention.
As shown in fig. 1 to 4, the bottom plate 1a has a circular shape including a bottom wall 11a and a side wall 12 a. The chassis 1a may be made of a heat conductive metal material such as aluminum, or may be integrally formed by a heat conductive plastic or an aluminum-plastic material, so that the chassis 1a has a high heat conductive performance, and when the light emitting assembly 3a located in the chassis 1a generates heat, the heat can be rapidly dissipated through the chassis 1a, thereby preventing the temperature in the chassis 1a from being too high to affect the service quality and the service life of the light emitting assembly 3 a.
The face mask 2a is a circular plate, which may be a light homogenizing plate. The mask 2a and the chassis 1a can be directly connected or indirectly connected through the lens 4a or other connecting pieces, and the connecting manner can adopt a snap connection, a screw connection or other connecting manners. The mask 2a includes a light transmitting portion 21a and a light shielding portion 22a, the light shielding portion 22a is annular and is located directly above the top region of the lens 4a, and the light transmitting portion 21a is circular and is located inside the light shielding portion 22 a.
As shown in fig. 2 to 4, the light emitting assembly 3a includes an annular light source plate 31a and a plurality of light emitting units 32a disposed on the light source plate 31 a. The light source plates 31a are fixed on the chassis 1a, and the light emitting units 32a are uniformly arranged along the light source plates 31 a. In the present embodiment, the light emitting unit 32a is an LED light source, and the light source board 31a is integrally formed, and in other alternative embodiments, the light source board 31a may be formed by splicing a plurality of arc-shaped light source board units end to end.
As shown in fig. 1 to 4, the lens 4a has a ring shape and is fixed in the chassis 1 a. The lens 4a has an outer diameter similar to that of the bottom plate 1a and a height higher than the side wall 12 a. The inner annular surface of the lens 4a, the bottom wall 11a and the face mask 2a constitute an optical cavity 10 a. The lens 4a is an optical element, which may be PMMA or PC, and is of a one-piece construction, and in other alternative embodiments, may be formed of multiple arcuate lens units. Specifically, the lens 4a has an axisymmetric structure, and has an inner surface 41a, an outer surface 42a, and a receiving cavity 410a surrounded by the inner surface 41a for receiving the light emitting unit 32 a. The inner surface 41a is a light incident surface and is located at the bottom of the lens 4a, and includes a light incident upper surface 411a and a light incident side surface 412a, where the light incident upper surface 411a is a bottom surface of the accommodating cavity 410a, and the light incident side surface 412a is a side surface of the accommodating cavity 410 a. The outer surface 42a includes a first upper reflection surface 421a and a second upper reflection surface 422a located on top and intersecting each other, a third lower reflection surface 423a and a fourth lower reflection surface 424a opposite to the first upper reflection surface 421a and the second upper reflection surface 422a, respectively, and a first light emitting surface 425a and a second light emitting surface 426a facing to both sides, wherein the first upper reflection surface 421a and the second upper reflection surface 422a form a V-shaped structure, an included angle of the V-shaped structure is between 35 ° and 55 °, the third lower reflection surface 423a and the fourth lower reflection surface 424a are connected to both opposite sides of the light incident surface, respectively, and the first light emitting surface 425a and the second light emitting surface 426a are located on both opposite sides of the light incident surface. The light emitting surface located on the inner ring surface of the lens 4a is defined as a first light emitting surface 425a, the light emitting surface located on the outer ring surface of the lens 4a is defined as a second light emitting surface 426a, the first light emitting surface 425a is connected with the first upper reflecting surface 421a and the third lower reflecting surface 423a, and the second light emitting surface 426a is connected with the second upper reflecting surface 422a and the fourth lower reflecting surface 424 a. In this embodiment, the upper light incident surface 411a is a curved surface and protrudes toward the containing cavity 410a, the side light incident surface 412a is a plane, the first upper reflective surface 421a and the second upper reflective surface 422a are planes, the third lower reflective surface 423a and the fourth lower reflective surface 424a are curved surfaces and are convex surfaces, and the first light emitting surface 423a and the second light emitting surface 424a are planes. In other alternative embodiments, the arrangement of the planes or curved surfaces of the light incident surface, the light reflecting surface, and the light emitting surface may also adopt other combinations. In the present embodiment, the first light emitting surface 425a is uniformly provided with a plurality of ribs along the extending direction of the lens 4a, so that the emergent light is more uniform.
As shown in fig. 5, all the light emitted by the light emitting unit 32a enters the lens 4a through the inner surface 41a, the light on the right side of the central axis X is reflected and then emitted from the first light emitting surface 425a, and the light on the left side of the central axis X is reflected and then emitted from the second light emitting surface 426 a. Specifically, after a part of the right light enters the lens 4a from the upper light incident surface 411a and is reflected by the first upper reflecting surface 421a, the right light is directly emitted from the first light emitting surface 425a, and after another part of the right light enters the lens 4a from the side light incident surface 412a, the right light is collimated by the third lower reflecting surface 423a, is reflected by the first upper reflecting surface 421a, and is emitted from the first light emitting surface 425 a; after entering the lens 4a through the upper light incident surface 411a, a part of the left light rays is reflected by the second upper reflecting surface 422a and then directly emitted from the second light emitting surface 426a, and after entering the lens 4a through the side light incident surface 412a, another part of the left light rays is collimated by the fourth lower reflecting surface 424a, reflected by the second upper reflecting surface 422a and then emitted from the second light emitting surface 426 a.
As shown in fig. 4 and 5, the first light emitting surface 425a and the second light emitting surface 426a are both located above the sidewall 12a in the vertical direction, and the light emitted from the first light emitting surface 425a enters the optical cavity, and is reflected for multiple times and then transmitted upward by the face mask 2a, so as to be used as a main light emitter of the lighting device 100 a. The light emitted from the second light emitting surface 426a is emitted from the outside of the lighting device 100a and is irradiated on a wall or a ceiling as background light. A layer of filter film may be further added on the second light emitting surface 426a, so that the backlight presents a color effect.
To the fixed of lens 4a and light source subassembly 3a, can set up a hollow tubular structure, establish the outside of lens 4a and light source subassembly 3a in the cover, fix, simultaneously, this tubular structure is fixed on chassis 1 a. In other alternative embodiments, the light source module 3a and the lens 4a may be fixed in other manners.
The upper reflecting surface and the lower reflecting surface mentioned in this embodiment are limitations on the relative arrangement of the two reflecting surfaces, and the placement position of the lighting device 100a cannot be limited, that is, when the lighting device 100a is a wall-mounted lamp, the upper reflecting surface and the lower reflecting surface are left and right opposite.
Example 2
As shown in fig. 6 to 8, the present embodiment provides a lighting device 100b, which includes a chassis 1b, a light emitting assembly 3b disposed in the chassis 1b, a lens 4b disposed on the light emitting assembly 3b, and a cover 2b disposed above the lens 4b, wherein the chassis 1b includes a bottom wall 11b and a side wall 12b, the lens 4b has two light emitting surfaces for emitting light toward two sides of the lens 4a, respectively, the light emitted from one side of the lens 4b is finally transmitted upward by the cover 2b as a main light emitter of the lighting device 100b, and the light emitted from the other side of the lens 4b is emitted from an outer side of the lighting device 100b as a background light. The lighting device 100b of the present invention may be mounted on a ceiling (not shown) as a ceiling lamp, or may be mounted on a wall (not shown) as a wall lamp.
The lighting device 100b has substantially the same configuration as the lighting device 100a, and the lens 4b has substantially the same configuration as the lens 4a, and is different in that the chassis 1b and the mask 2b are both annular, and the inner diameter of the lens 4b is substantially the same as the inner diameter of the chassis 1 b. The mask 2b includes a light-transmitting portion 21b and a light-blocking portion 22b, the light-blocking portion 22a is annular and is located directly above the top region of the lens 4b, and the light-transmitting portion 21a is annular and is located outside the light-blocking portion 22 a. A light emitting surface (i.e., a light emitting surface through which the light is finally transmitted by the mask 2 b) located on the outer annular surface of the lens 4b is defined as a first light emitting surface 425b, and a light emitting surface (i.e., a surface light emitting surface through which the light is directly emitted) located on the inner annular surface of the lens 4b is defined as a second light emitting surface 426 b. The outer annular surface of the lens 4b, the bottom wall 11b and the face mask 2b constitute an optical cavity 10 b.
As shown in fig. 8, the first light emitting surface 425b and the second light emitting surface 426b are both located above the sidewall 12b in the vertical direction, and the light emitted from the first light emitting surface 425b enters the optical cavity 10b, and is reflected for multiple times and then transmitted upward by the face mask 2b to serve as a main light emitter of the illumination device 100 b. The light emitted from the second light emitting surface 426b is emitted from the inner side of the lighting device 100b and is irradiated on the wall or the ceiling as background light. A layer of filter film may be further added on the second light emitting surface 426b, so that the backlight presents a color effect.
Example 3
As shown in fig. 9 to 11, the present embodiment provides a lighting device 100c, which includes a chassis 1c, a light emitting assembly 3c disposed in the chassis 1c, a lens 4c disposed on the light emitting assembly 3c, and a cover 2c disposed above the lens 4c, wherein the lens 4c has two light emitting surfaces for emitting light toward two sides of the lens 4c, the light emitted from one side of the lens 4c is finally transmitted upward by the cover 2c to serve as a main light emitter of the lighting device 100c, and the light emitted from the other side of the lens 4c is emitted from an outer side of the lighting device 100c to serve as background light. The lighting device 100c of the present invention may be mounted on a ceiling (not shown) as a ceiling lamp, or may be mounted on a wall (not shown) as a wall lamp.
The lighting device 100c has substantially the same structure as the lighting device 100a, and is different in that the chassis 1c and the face mask 2c are each square, and the chassis 1c includes a square bottom wall 11c and two annular side walls 12 c. The light source module 3c and the lens 4c are both square and annular, and the lens 4c is located between the two annular side walls 12 c. The light source assembly 3c includes four strip-shaped light source plates 31c and light emitting cells 32c disposed on the light source plates 31 c. The lens 4c is formed by splicing four strip-shaped lens units 40c, and one lens unit 40c is correspondingly arranged above one light source plate 31 c. The mask 2c includes a light transmitting portion 21c and a light shielding portion 22c, the light shielding portion 22c is annular and is located directly above the top region of the lens 4c, and the light transmitting portion 21c is square and is located inside the light shielding portion 22 c. The inner annular surface of the lens 4c, the bottom wall 11c and the face mask 2c constitute an optical cavity 10 c.
The first light emitting surface 425c and the second light emitting surface 426c are both located above the sidewall 12c in the vertical direction, and the light emitted from the first light emitting surface 425c enters the optical cavity 10c, is reflected for multiple times, and then is transmitted upward by the face shield 2c to be used as a main light emitter of the lighting device 100 c. The light emitted from the second light emitting surface 426c is emitted from the outside of the lighting device 100c and is irradiated on the wall or the ceiling as background light. A layer of filter film may be further added on the second light emitting surface 425c, so that the backlight presents a color light effect.
The lens 4c in the lighting device 100c of the present embodiment adopts a splicing manner, so that the mold cost and the manufacturing difficulty are reduced, and the flexibility is improved. In other alternative embodiments, the illumination device 100c may also be made polygonal.
In summary, in the lighting device of the present invention, the lens in the lighting device guides the upward light emitted by the light emitting unit to two sides to form a side light emitting form, the emergent light at one side is reflected by the optical cavity for multiple times and then emitted from the mask to form a main light emitting body of the lighting device, and the emergent light at the other side directly hits on a wall or a ceiling to play a role of a background light. The lighting device has the advantages of thin thickness, good light-emitting effect and attractive appearance.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (14)

1. A lighting device, comprising a chassis, a light emitting module disposed in the chassis, and an optical element disposed on the light emitting module, wherein the light emitting module comprises a light source board and a light emitting unit disposed on the light source board, the light emitting unit being housed in the optical element,
the optical element comprises a light incident surface, two upper reflecting surfaces, two lower reflecting surfaces and two light emergent surfaces, the light incident surface is positioned at the bottom of the optical element and is surrounded to form an accommodating cavity for accommodating the light emitting unit, the two upper reflecting surfaces are positioned at the top of the optical element and are intersected with each other, the two lower reflecting surfaces are respectively connected with two opposite sides of the light incident surface, the two light emergent surfaces are positioned at two opposite sides of the light incident surface, the upper reflecting surface and the lower reflecting surface are matched to reflect light rays emitted by the light emitting unit positioned in the accommodating cavity to the light emergent surfaces,
The lighting device further comprises a face cover arranged above the optical element, the two light-emitting surfaces are a first light-emitting surface and a second light-emitting surface, light emitted from the first light-emitting surface is transmitted out of the face cover, and light emitted from the second light-emitting surface is directly emitted out of the side face of the chassis, wherein the face cover comprises a light-transmitting part and a light-shielding part, the light-shielding part is positioned right above the top of the optical element, and the light-transmitting part is positioned on the inner side or the outer side of the light-shielding part;
the second light-emitting surface is positioned on the outer side surface of the lighting device, and light emitted by the second light-emitting surface is emitted from the outer side of the lighting device; or the second light-emitting surface is positioned on the inner side surface of the lighting device, and the light emitted by the second light-emitting surface is emitted from the inner side of the lighting device.
2. The illumination device as claimed in claim 1, wherein the light incident surface includes an upper light incident surface and a side light incident surface, the upper light incident surface is a bottom surface of the accommodating cavity, and the side light incident surface is a side surface of the accommodating cavity.
3. A lighting device as recited in claim 1, wherein said two upper reflective surfaces of said optical element form a V-shaped configuration.
4. A lighting device as recited in claim 3, wherein said V-shaped structure comprises an included angle of between 35 ° and 55 °.
5. A lighting device as recited in claim 1, wherein said lower reflective surface is curved and convex.
6. A lighting device as recited in claim 1, wherein said two light-emitting surfaces are parallel surfaces.
7. A lighting device as recited in claim 1, wherein at least one of said two light-emitting surfaces has a plurality of ribs uniformly disposed thereon along an extending direction of said optical element.
8. A lighting device as recited in claim 1, wherein said optical element is an elongated lens which is arcuate or polygonal in shape.
9. A lighting device as recited in claim 1, wherein said optical element is rectangular or circular in shape.
10. The illumination device as recited in claim 1, wherein a filter is disposed on at least one of the two light-emitting surfaces.
11. A lighting device as recited in claim 1, wherein each of said light-exiting surfaces is connected to an upper reflecting surface and a lower reflecting surface.
12. A lighting device as recited in claim 1, wherein the base pan comprises a bottom wall and a side wall, and the first light exit surface and the second light exit surface are both vertically above the side wall.
13. The illumination device as recited in claim 1, wherein the optical element is a ring structure, the inner or outer ring surface of the optical element, the bottom wall and the cover form an optical cavity, and the light emitted from the first light emitting surface enters the optical cavity and is reflected multiple times and then transmitted through the cover.
14. A lighting device as recited in claim 1, wherein said optical element is of a unitary or tiled construction.
CN201710442578.6A 2017-06-13 2017-06-13 Optical element and lighting device using same Active CN107166334B (en)

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PCT/CN2018/089294 WO2018228207A1 (en) 2017-06-13 2018-05-31 Optical element and lighting apparatus using optical element

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Publication number Priority date Publication date Assignee Title
WO2018228207A1 (en) * 2017-06-13 2018-12-20 苏州欧普照明有限公司 Optical element and lighting apparatus using optical element
CN107965704B (en) * 2017-12-20 2023-09-29 欧普照明股份有限公司 Lighting device and lighting system
JP7027616B2 (en) * 2018-12-13 2022-03-01 シグニファイ ホールディング ビー ヴィ Lighting device with luminescent filament

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CN105202479A (en) * 2014-05-30 2015-12-30 宁波高新区赛尔富电子有限公司 LED lens and lamp lighting system
CN203940327U (en) * 2014-07-03 2014-11-12 苏州鸿益丰光电有限公司 Light modulation lens and apply the LED lamp affixed to the ceiling of these lens
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