CN219674043U - Optical system based on reflector - Google Patents

Abstract

The utility model discloses an optical system based on a reflector, which comprises a bracket, an LED light source, a light-transmitting lens and a reflector, wherein the LED light source and a lens-increasing sheet are arranged in the bracket, and the light-transmitting lens is covered on the LED light source to protect the LED light source. The reflector is connected on the support, and LED light source and printing opacity lens are located the reflector bottom, have effectively reduced anti-dazzle index. The reflectors are connected to the support through the detachable connecting structure, the reflectors are convenient to replace, different light distribution angles can be achieved by replacing reflectors with different heights/caliber sizes, and the size adjustment of the wall washing light spots is realized. The light-transmitting lens is an anti-reflection lens with an anti-reflection film coated on the surface, the anti-reflection film on the surface of the anti-reflection lens can reduce reflected light, increase light-emitting efficiency and effectively remove stray light. According to the utility model, by arranging the anti-reflection lens at the bottom end of the reflector, stray light can be removed while the anti-dazzle index is reduced, and the light-emitting efficiency is improved.

Description

Optical system based on reflector

Technical Field

The utility model relates to the field of lamps, in particular to an optical system based on a reflector.

Background

The LED is used as a novel green light source product, and along with the advantages of high luminous efficiency, low power consumption, long service life and the like, the LED is widely applied in the field of illumination, and various lamps and lanterns all adopt the LED as a light source. The light intensity distribution of the light source in all directions in space is light distribution, and due to the luminous characteristics of the LEDs, light distribution pieces such as lenses, reflecting cups, anti-dazzle covers and the like or a plurality of light distribution pieces are generally required to be installed on the lamp for combined use.

To can install the reflector in lamps and lanterns such as ceiling lamp, down lamp, shot-light, the reflector is installed in the lamp body, and the light source in the lamp body is arranged in the light inlet of reflector bottom, and the light that the LED light source sent forms the light and gathers and send again through the reflecting surface reflection of reflector inner wall, and the reflector of different specifications can play different grading angles, sends the facula of equidimension. In chinese patent No. CN202221919063.3, entitled reflection lampshade and spotlight, a reflection lampshade is disclosed, as shown in fig. 1, comprising: the reflector, anti-dazzle ware and dustproof lens 3 that order arranges in proper order, the reflector includes reflector body 11, reflector reflecting surface 12, reflector income light mouth 13, reflector light outlet 14 the inside cavity of reflector body 11 is and link up front and back both ends, reflector reflecting surface 12 sets up on the inner peripheral surface of reflector body 11, reflector income light mouth 13 and reflector light outlet 14 set up respectively at the front and back both ends of reflector body 11, reflector 1 sets up on reflector support 4, reflector support 4 linking bridge 5, light source 6 sets up on the support 5 and correspond with the position of reflector income light mouth 13. The anti-dazzle device 2 comprises an anti-dazzle device light inlet 21 and an anti-dazzle device light outlet 22, the anti-dazzle device light inlet 21 is communicated with the reflector light outlet 14, the dustproof lens 3 is arranged on the anti-dazzle device light outlet 14, and an anti-dazzle device light absorbing surface 23 is arranged on the inner periphery of the anti-dazzle device 2. Light enters the reflector body 11 through the reflector light inlet 14 and is reflected in the reflector reflecting surface 12 to form light convergence, and then is emitted through the reflector light outlet 14 and enters the antiglare device; when the light passes through the dustproof lens 3, part of the light is reflected back to the anti-dazzle device, the part of the light is stray light, and the anti-dazzle device absorbs the stray light to eliminate the stray light, prevent the stray light from being emitted after multiple reflections, and realize the purification of the stray light.

Because of the requirement of protecting the LED light source, in the prior art, the LED reflector adopts a scheme of adding a lens at the top end (a lens cover is arranged at the top of the LED reflector, and when an anti-dazzle device is additionally arranged, the lens is arranged on the anti-dazzle device), but the phase change is equivalent to the improvement of the LED light emitting surface and the increase of the glare value. In the prior art, if a different spot effect is desired, it is necessary to replace the luminaire provided with a reflector of a different angle, or to replace the reflector in the luminaire. The reflector and the light source bracket are connected and fixed through screws, so that the reflector is inconvenient to assemble and disassemble; when assembled with the lamp, the lens cover is arranged on the reflector, and the lens further hinders the replacement of the reflector. The replacement of the lamp body is difficult because of the fixed size/location of the opening, and if a different spot effect is desired, the position needs to be adjusted or the opening needs to be re-performed.

Disclosure of Invention

The utility model mainly aims to provide an optical system based on a reflector, which aims to realize spot size adjustment and reduce anti-dazzle index.

The utility model provides an optical system based on a reflector, which comprises a bracket, an LED light source, a light-transmitting lens and a reflector, wherein the LED light source and the light-transmitting lens are arranged in the bracket, the light-transmitting lens is covered on the LED light source, the reflector is connected to the bracket through a detachable connection structure, and the LED light source and the light-transmitting lens correspond to a light inlet at the bottom of the reflector.

Preferably, the support comprises a light source support and a reflector support, a light source groove is arranged in the light source support, the LED light source is located in the light source groove, the light-transmitting lens cover is arranged at a port of the light source groove facing the light emitting direction, the reflector support is fixedly connected to the light source support, the reflector support is fixedly pressed on the light source support, and a light-transmitting port corresponding to the LED light source is arranged on the reflector support.

Preferably, the detachable connection structure is a snap connection structure arranged at the reflector bracket and the bottom of the reflector.

Preferably, the buckle connection structure is a rotary buckle connection structure, and comprises a plurality of arc clamping grooves which are distributed on the circumference and are transversely opened, clamping blocks which are in one-to-one correspondence with the clamping grooves and are adaptive, wherein one of the clamping grooves and one of the clamping blocks is arranged on the reflector bracket, the other clamping block is arranged on the outer side of the bottom of the reflector, and the clamping blocks are horizontally rotated into the clamping grooves to be locked through rotation, so that the reflector is connected with the bracket.

Preferably, the upper side or the downside of the clamping block is provided with an arc-shaped bulge, the inner wall of the clamping groove is provided with an arc-shaped clamping position formed by a concave corresponding to the arc-shaped bulge, and the arc-shaped bulge is clamped into the arc-shaped clamping position, so that the clamping block is clamped and fixed in the clamping groove.

Preferably, the bottom of the light source groove is provided with an opening, the LED light source comprises a substrate and an LED chip arranged on the substrate, and the LED chip extends into the light source groove from the bottom of the light source groove; and a vacancy is reserved at the edge of the substrate, an electric contact for connecting wires is arranged on the vacancy, and the electric contact is positioned outside the light source groove.

Preferably, the LED light source is a COB light source.

Preferably, one of the light source support and the reflector support is provided with a concave part, the other one is provided with a convex part, the concave part and the convex part are in one-to-one correspondence, the convex part is arranged in the concave part to form a concave-convex limiting structure, and the concave part and the convex part are provided with connecting holes which are mutually corresponding and are used for connecting the support and the lamp.

Preferably, the light-transmitting lens is an anti-reflection lens with an anti-reflection film plated on the surface.

Preferably, the front light outlet of the reflector is connected with an annular anti-dazzle cover.

Compared with the prior art, the utility model has the beneficial effects that:

the reflector-based optical system provided by the utility model comprises a bracket, an LED light source, a light-transmitting lens and a reflector, wherein the LED light source and the lens-increasing sheet are arranged in the bracket, and the light-transmitting lens cover is arranged on the LED light source to protect the LED light source. The reflector is connected on the support, and LED light source and printing opacity lens are located the reflector bottom, compare at the LED reflector top with the lens installation in prior art, have effectively reduced anti-dazzle index.

The reflector is connected to the support through the detachable connection structure, the front end of the reflector is free of lenses, the reflector is convenient to replace, different light distribution angles can be achieved by replacing reflectors with different heights/caliber sizes, the lamp main body is not required to be replaced, and the size of the wall washing light spot can be adjusted by replacing the reflecting cups with different heights and the same aperture.

The light-transmitting lens is an anti-reflection lens with an anti-reflection film plated on the surface. Reflection on the surface of an optical element in an optical instrument affects not only the light transmission energy of the optical element, but also stray light formed in the instrument by the reflected light, which affects the imaging quality of the optical instrument. The lens-increasing sheet cover is arranged on the LED light source, so that the LED light source is protected, the reflection reducing film on the surface of the lens-increasing sheet can reduce reflected light, the light-emitting efficiency is increased, and stray light is effectively removed. According to the utility model, by arranging the anti-reflection lens at the bottom end of the reflector, stray light can be removed while the anti-dazzle index is reduced, and the light-emitting efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a reflective lampshade in the prior art.

Fig. 2 is a schematic diagram of a stray light-free optical system according to an embodiment of the utility model.

Fig. 3 is a schematic exploded view of an optical system without stray light according to an embodiment of the utility model.

Fig. 4 is an assembly view of a holder for a stray light free optical system, an LED light source, and an anti-reflection lens according to an embodiment of the utility model.

Fig. 5 is an assembly diagram of a light source holder and an LED light source without a stray light optical system according to an embodiment of the utility model.

Fig. 6 is a schematic diagram showing a structure in which a reflector holder of the stray light-free optical system is separated from a light source holder in an embodiment of the utility model.

Fig. 7 is a schematic back view of a reflector holder and a light source holder of a stray light-free optical system according to an embodiment of the utility model.

Fig. 8 is a schematic structural view of a reflector with a light distribution angle of 15 ° for a stray light-free optical system in an embodiment of the utility model.

Fig. 9 is a schematic structural view of a reflector with a 24 ° light distribution angle of a stray light-free optical system in an embodiment of the utility model.

Fig. 10 is a schematic structural view of a reflector with a light distribution angle of 36 ° for a stray light-free optical system in the embodiment of the utility model.

Fig. 11 is a schematic view of the structure of an optical system with light distribution angles of 15 ° in the embodiment of the present utility model.

Fig. 12 is a schematic view showing the structure of an optical system having 24 ° light distribution angles, respectively, in the embodiment of the present utility model.

Fig. 13 is a schematic view showing the structure of an optical system having light distribution angles of 36 ° in the embodiment of the present utility model.

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, and technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to fig. 2 to 10.

The embodiment of the utility model provides an optical system based on a reflector, which comprises a bracket 1, an LED light source 2, a light-transmitting lens 3 and a reflector 4, wherein the LED light source 2 and the light-transmitting lens 3 are arranged in the bracket 1, the light-transmitting lens 3 is covered on the LED light source 2, the reflector 4 is connected on the bracket 1, and the LED light source 2 and the light-transmitting lens 3 are positioned at the bottom end of the reflector 4. The light emitted by the LED light source 2 is emitted through the light-transmitting lens 3, enters the reflector 4 through the light inlet at the bottom end of the reflector 4, is reflected in the reflecting surface of the inner wall of the reflector 4, and then is emitted from the light outlet at the front end of the reflector 4.

The light-transmitting lens is the anti-reflection lens 3 with the surface plated with the anti-reflection film, the anti-reflection lens 3 is covered on the LED light source 2, namely the LED light source 2 is protected, the anti-reflection film on the surface of the anti-reflection lens 3 can reduce reflected light, the light-emitting efficiency is increased, and stray light is effectively removed. The LED light source 2 and the lens-enhancing sheet 3 are positioned at the bottom end of the reflector 4, and the antiglare index is effectively reduced as compared with the prior art that the lens is mounted on the top of the LED reflector 4.

In a further preferred embodiment of the present utility model, as shown in fig. 3-7, the support 1 includes a light source support 20 and a reflector support 30, the light source support 20 is provided with a light source groove 21 in the center, the LED light source 2 is located in the light source groove 21, the reflector support 30 is fixedly connected to the light source support 20, and the reflector support 30 is provided with a light through hole 32 corresponding to the light source groove 21 and the LED light source 2 therein. The lens-increasing sheet 3 covers the port of the light source groove 21 facing the light emitting direction, corresponds to the position of the light-passing port 32, and the edge of the light-passing port 32 of the reflector bracket 30 presses and fixes the edge of the lens-increasing sheet 3 on the light source bracket 20, so that the lens-increasing sheet 3 is easy and convenient to install, is positioned in the bracket 1 and is not easy to wear.

The bottom of the light source groove 21 is provided with an opening, the LED light source 2 comprises a substrate and an LED chip arranged on the substrate, and the LED chip extends into the light source groove 21 from the bottom of the light source groove 21; the edge of the substrate is provided with a vacancy, and an electric contact for connecting wires is arranged on the vacancy and is positioned outside the light source groove 21 for externally connecting wires.

The reflector bracket 30 is covered on the light source bracket 20, two concave parts 22 are arranged on the light source bracket 20, two convex parts 33 which are downwards convex are arranged on the reflector bracket 30, the concave parts 22 and the convex parts 33 are in one-to-one correspondence, and the convex parts 33 are arranged in the concave parts 22 to form a concave-convex limiting structure. The concave portion 22 and the convex portion 33 are provided with corresponding connecting holes 11 for connecting the bracket 1 and the lamp. When the LED light source 2 is connected with a lamp, the LED light source 2 is assembled in the light source bracket 20 and is placed in a lamp shell of the lamp together, a connecting hole 11 is aligned with a screw hole in the lamp shell, the lens-increasing sheet 3 is assembled on the light source bracket 20, then the reflector bracket 30 is covered on the light source bracket 20, the convex part 33 is arranged in the concave part 22, and a screw sequentially penetrates through the connecting hole on the convex part 33 and the connecting hole on the concave part 22 and penetrates into the screw hole to be locked, so that the installation operation of the light source, the lens-increasing sheet 3 and the bracket 1 can be completed.

The side walls of the light source support 20 and the reflector support 30 are provided with wire through openings opposite to the electric contact positions on the LED light source 2 for wires to pass through.

Further, the LED light source 2 is a COB light source, and the manufacturing process of the COB light source includes covering the silicon chip placement points on the surface of the substrate with a heat-conductive epoxy resin (generally, a silver-doped epoxy resin), directly placing the silicon chip on the surface of the substrate, performing heat treatment until the silicon chip is firmly fixed on the substrate, and directly establishing electrical connection between the silicon chip and the substrate by using a wire bonding method. The precise packaging technology ensures that the chip can be fully cooled, so as to ensure the quality of the chip and prolong the service life of the chip.

The bracket 1 is made of fireproof and high-temperature resistant materials, and is safer.

In a further preferred embodiment of the present utility model, the reflector 4 is connected to the bracket 1 by a detachable connection structure, which is a snap connection structure provided at the bottom of the reflector bracket 30 and the reflector 4, so as to facilitate the disassembly and assembly of the reflector 4.

The buckle connection structure in this embodiment is a rotary buckle connection structure, and includes a plurality of arc-shaped slots 31 with transverse openings distributed on the circumference of the front end surface of the reflector bracket 30 and clamping blocks 41 which are arranged on the outer side of the bottom of the reflector 4 and are in one-to-one correspondence with the slots 31 and are adapted. The latch 41 protrudes outside the bottom of the reflector 4. Of course, in other embodiments, the clamping groove 31 may be disposed outside the bottom of the reflector 4, and the clamping block 41 is disposed on the reflector bracket 30.

When the reflector 4 is assembled, the reflector bracket 30 is placed on the reflector, the clamping block 41 corresponds to the opening of the clamping groove 31, the reflector 4 is rotated, the clamping block 41 is rotated into the clamping groove 31 to be locked by rotation, the reflector 4 is connected with the reflector bracket 30, and the reflector 4 is convenient to assemble and disassemble.

Further for realizing the locking of fixture block 41 in draw-in groove 31, the upside of fixture block 41 is the protruding setting of arc, and the draw-in groove 31 inner wall is equipped with the arc screens 311 that the concave yield that corresponds with the arc is protruding, and arc protruding card is gone into in the arc screens 311, makes fixture block 41 card in draw-in groove 31, and the locking is fixed, prevents reflector 4 roll-off.

The reflector 4 is convenient to detach and replace, different light distribution angles can be achieved by replacing reflectors 4 with different heights/caliber sizes, a lamp main body is not required to be replaced, and the size of the wall washing light spot can be adjusted by replacing the reflecting cups with different heights and the same aperture.

As shown in fig. 8, a schematic view of the reflector 4 with a light distribution angle of 15 ° is shown; as shown in fig. 9, a schematic view of the reflector 4 with a light distribution angle of 24 °; as shown in fig. 10, a schematic view of the reflector 4 having a light distribution angle of 36 °.

In this embodiment, an antiglare cover 5 having a circular flat opening is connected to the front light exit of the reflector 4 to further reduce antiglare. As shown in fig. 11, 12, and 13, the optical systems having the light distribution angles of 15 °, 24 °, and 36 ° are schematic structures. As shown in fig. 11, 12 and 13, the reflector bracket 30 is rotatably and snap-connected with the reflector 4, and the reflector 4 is connected with the antiglare shield 5 through a snap-in structure, so that the disassembly and assembly are convenient.

According to the split design of the scheme, according to the requirements of occasions, different light distribution angles are achieved by improving the installation position of the anti-reflection lens and replacing different reflectors, the size adjustment of the wall washing light spots is achieved, and stray light is effectively removed.

The above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the scope of the present utility model. It will be apparent that the described embodiments are merely some, but not all, embodiments of the utility model. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the utility model. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present utility model or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present utility model, which also falls within the scope of the present utility model.

Claims (10)

1. The utility model provides an optical system based on reflector, its characterized in that includes support, LED light source, printing opacity lens and reflector, the LED light source with printing opacity lens is installed in the support, printing opacity lens lid is established on the LED light source, the reflector is connected through detachable connection structure on the support, the LED light source with printing opacity lens corresponds the light inlet of reflector bottom.

2. The reflector-based optical system according to claim 1, wherein the support comprises a light source support and a reflector support, a light source groove is formed in the light source support, the LED light source is located in the light source groove, the light-transmitting lens cover is arranged at a port of the light source groove facing the light emitting direction, the reflector support is fixedly connected to the light source support, the reflector support fixedly presses the light-transmitting lens on the light source support, and a light-transmitting port corresponding to the LED light source is formed in the reflector support.

3. The reflector-based optical system of claim 2, wherein the detachable connection is a snap connection disposed at the reflector bracket and the reflector bottom.

4. The reflector-based optical system according to claim 3, wherein the snap connection structure is a rotary snap connection structure, and comprises a plurality of arc-shaped clamping grooves with transverse openings distributed on the circumference and clamping blocks which are in one-to-one correspondence and fit with the clamping grooves, wherein one of the clamping grooves and the clamping blocks is arranged on the reflector bracket, the other clamping block is arranged on the outer side of the bottom of the reflector, and the clamping blocks are horizontally rotated into the clamping grooves to be locked by rotation, so that the reflector is connected with the bracket.

5. The reflector-based optical system according to claim 4, wherein the upper side or the lower side of the clamping block is provided with an arc-shaped protrusion, the inner wall of the clamping groove is provided with an arc-shaped clamping position formed by a concave corresponding to the arc-shaped protrusion, and the arc-shaped protrusion is clamped into the arc-shaped clamping position, so that the clamping block is clamped in the clamping groove.

6. The reflector-based optical system of claim 2, wherein the light source trough bottom is an opening, the LED light source comprising a substrate and an LED chip disposed on the substrate, the LED chip extending from the light source trough bottom into the light source trough; and a vacancy is reserved at the edge of the substrate, an electric contact for connecting wires is arranged on the vacancy, and the electric contact is positioned outside the light source groove.

7. The reflector-based optical system of claim 6, wherein the LED light source is a COB light source.

8. The reflector-based optical system according to claim 2, wherein one of the light source support and the reflector support is provided with a concave portion, the other is provided with a convex portion, the concave portion and the convex portion are in one-to-one correspondence, the convex portion is arranged in the concave portion to form a concave-convex limiting structure, and the concave portion and the convex portion are provided with connecting holes corresponding to each other for connecting the support and the lamp.

9. The reflector-based optical system of any one of claims 1-8, wherein the light-transmitting lens is an antireflective lens coated on a surface thereof.

10. The reflector-based optical system of claim 9, wherein the front light exit of the reflector is coupled with an annular antiglare shield.