[go: up one dir, main page]

WO2019192280A1 - 星空投影灯 - Google Patents

星空投影灯 Download PDF

Info

Publication number
WO2019192280A1
WO2019192280A1 PCT/CN2019/077063 CN2019077063W WO2019192280A1 WO 2019192280 A1 WO2019192280 A1 WO 2019192280A1 CN 2019077063 W CN2019077063 W CN 2019077063W WO 2019192280 A1 WO2019192280 A1 WO 2019192280A1
Authority
WO
WIPO (PCT)
Prior art keywords
light source
aperture
led light
light
projection lamp
Prior art date
Application number
PCT/CN2019/077063
Other languages
English (en)
French (fr)
Inventor
龙涛
黄帆
邹诚
Original Assignee
超视界激光科技（苏州）有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201820456376.7U external-priority patent/CN208295642U/zh
Priority claimed from CN201810879129.2A external-priority patent/CN108826122B/zh
Priority claimed from CN201821254782.1U external-priority patent/CN208546845U/zh
Application filed by 超视界激光科技（苏州）有限公司 filed Critical 超视界激光科技（苏州）有限公司
Publication of WO2019192280A1 publication Critical patent/WO2019192280A1/zh

Links

Images

Classifications

    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/08—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using diaphragms containing one or more apertures
    • 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
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources

Definitions

  • the invention relates to the technical field of illumination, and in particular to a starlight projection lamp.
  • Starlight projection lamp is a kind of decorative lighting device that projects countless stars or snowflakes on walls, ceilings and lawns. It can be used indoors such as KTV box, outdoor such as courtyard, lawn and plants to create atmosphere and decoration. The role of the landscape has a very wide range of applications in life.
  • the star projectors on the market use laser diodes as the light source, but the laser diodes are almost all red, green and blue, and cannot effectively synthesize white, so it is difficult to form a white pattern.
  • the current starlight projection lamp is usually a monochrome projection lamp, which requires a plurality of projection lamps to achieve a color effect, is inconvenient to use, and the existing starlight projection lamp has a large volume and a high cost, failing to meet the needs of practical applications.
  • the number of stars projected by the existing star projectors is limited, which affects the starry sky projection effect.
  • the present invention provides an LED star sky projection lamp with small size, simple structure and high brightness for the problems existing in the prior art.
  • the technical solution of the present invention is:
  • a starlight projection lamp comprising an LED light source, a first aperture, a beam splitting unit, a collimating lens and a mirror array in sequence along the optical path, wherein the first aperture is disposed adjacent to the light emitting surface of the LED light source, the first aperture And a first light-passing hole corresponding to the light-emitting surface of the LED light source, wherein the size of the first light-passing hole is smaller than the size of the light-emitting surface of the LED light source.
  • a bracket for mounting the LED light source and the first diaphragm is further included, a top of the bracket is higher than a top of the LED light source, and the first diaphragm is disposed at a top of the bracket.
  • the distance between the first aperture and the light emitting surface of the LED light source is less than 1 mm.
  • the first aperture is provided with a plurality of spaced patterns.
  • the splitting unit is composed of a plurality of mirrors, and the reflecting surfaces of any two mirrors are not coplanar.
  • the side and the bottom of the LED light source are covered with silica gel, and the LED light source is fixed in the silica gel.
  • the invention also provides an LED star sky projection lamp, comprising an LED light source, a first aperture, a second aperture, a collimating lens and a mirror array arranged in sequence along the optical path, wherein the first aperture is provided with an LED a first light-passing hole corresponding to the position of the light source, and a second light-passing hole corresponding to the position of the first light-passing hole, wherein the size of the first light-passing hole is smaller than the LED light source
  • the size of the light emitting surface, the second light passing hole collects the light angle smaller than the light collecting angle of the first light passing hole.
  • the bracket further includes: the LED light source, the first aperture, and the second aperture are sequentially disposed on the bracket,
  • the LED light source includes at least two LED units arranged in a gap and having different illumination colors.
  • the first aperture includes at least two first light-passing holes, and the positions of the first light-passing holes are in one-to-one correspondence with the LED units in the LED light source.
  • an opaque layer is disposed between two adjacent LED units.
  • the method further includes a splitting unit located in front of the collimating lens along the optical path, the splitting unit being composed of a plurality of mirrors, and the reflecting surfaces of any two mirrors are not coplanar.
  • a distance between the first aperture and the light emitting surface of the LED light source is less than 1 mm.
  • a driving mechanism connected to the mirror array is further included to drive the mirror array to rotate.
  • the starlight projection lamp provided by the present invention includes an LED light source, a first aperture, a beam splitting unit, a collimating lens, a mirror array, and a bracket for mounting the LED light source and the first aperture, respectively, along the optical path.
  • a first light-passing hole corresponding to the light-emitting surface of the LED light source is disposed on the first light-spot, and the first light-passing hole is smaller than the LED light source.
  • the first aperture is provided with a first light-passing hole corresponding to the light source, and the size of the first light-passing hole is smaller than the size of the LED light source.
  • the first light-passing hole corresponding to the LED light source is disposed on the first light beam by the first light diaphragm, and is configured to transmit the light emitted by the LED light source, and the size of the first light-passing hole is smaller than the size of the LED light source Therefore, the size of the spot is reduced, the brightness of the spot is improved, and other components such as a focus lens are not required, which greatly reduces the structure and the occupied volume of the lamp.
  • a second aperture is disposed along the optical path of the first aperture, and a second aperture is disposed on the second aperture, and an incident angle of the light source projected to the first aperture through the adjacent source is greater than the
  • the second light-passing hole corresponding to the first light-passing hole is half of the collecting angle of the light, so that the stray light emitted from the first light-passing hole is well shielded, thereby further improving the star-sky projection effect, and the star-light projection lamp of the present invention
  • the projection effect of multiple colors is realized, and the cost is low, and the application is extensive.
  • FIG. 1 is a schematic view showing a specific structure of a starlight projection lamp in Embodiment 1 of the present invention
  • FIG. 2 is a schematic structural view of a specific embodiment of an LED light source according to Embodiment 1 of the present invention.
  • FIG. 3 is a schematic view showing a specific structure of a starlight projection lamp in Embodiment 2 of the present invention.
  • FIG. 4 is a schematic view showing the operation of the LED light source and the first and second apertures corresponding to FIG. 3;
  • Figure 5 is a schematic structural view of a bracket in Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural view of a star-light projection lamp in Embodiment 3 of the present invention.
  • FIG. 7 is a schematic view showing the operation of the LED light source and the first and second apertures corresponding to FIG. 5;
  • FIG. 8 is a schematic structural view of the LED light source corresponding to FIG. 5.
  • the figure shows: 10, LED light source; 120, opaque layer; 130, PCB substrate; 140, silica gel; 20, first aperture; 210, first light aperture; 30, second aperture; a second light passing hole; 40, a splitting unit; 410, a mirror; 50, a collimating lens; 60, a mirror array; 610, a small mirror; 70, a bracket; 710, a groove; 720, a first step; 730, second step; 80, drive mechanism.
  • the present invention provides a starry sky projection lamp including an LED light source 10, a first aperture 20, a beam splitting unit 40, a collimating lens 50, and a mirror array 60 in sequence along the optical path.
  • the first aperture 20 is provided with a first light-passing hole 210 corresponding to the LED light source 10, and the size of the first light-passing hole 210 is smaller than the size of the light-emitting surface of the LED light source 10.
  • the LED light source 10 includes an LED chip supported by the bracket 70, and the first aperture 20 is directly attached to the top of the bracket 120.
  • the first aperture 20 is directly disposed above the bracket 70, and of course A first step adapted to the first aperture 20 may be provided on the bracket 70 to limit the first aperture 20 to the first step.
  • a first light-passing hole 210 corresponding to the LED light source 10 is disposed on the first aperture 20 for transmitting light emitted by the LED chip 110, and the size of the first light-passing hole 210 is smaller than the size of the light-emitting surface of the LED light source 10 Therefore, the size of the spot is reduced, the brightness of the spot is improved, and other components such as a focus lens are not required, which greatly reduces the structure and the occupied volume of the lamp.
  • the starlight projection lamp further includes a bracket 70 for mounting the LED light source 10 and the first aperture.
  • the LED light source 10 and the first aperture are mounted on the same bracket 70, and of course, can also be installed.
  • the top of the bracket 120 is higher than the top of the LED light source 10
  • the first aperture 20 is attached to the top of the bracket 70.
  • the top of the bracket 70 can also be higher than the first aperture 70. In this case, it is only necessary to provide a step corresponding to the first aperture 20 on the bracket 70 to limit it.
  • the distance between the first aperture 20 and the light emitting surface of the LED light source 10 is less than 1 mm. Specifically, since the surface temperature of the LED chip is high, the first aperture 20 cannot be directly attached to the LED chip. Of course, the distance between the first aperture 20 and the LED chip cannot be too large, so as not to affect the focusing effect of the spot, and affecting The brightness of the lamp.
  • the first aperture 20 is provided with a plurality of spaced patterns.
  • the light beams emitted by the LED light source 10 are divided into a plurality of light beams after being arranged in a spaced pattern, and the shapes of the patterns may be different, thereby increasing the diversity of the illumination patterns and the number of projection patterns.
  • the beam splitting unit 40 is composed of a plurality of mirrors 410, and the reflecting surfaces of any two mirrors 410 are not coplanar. In this way, after the reflection by the beam splitting unit 40, a beam of light is divided into a plurality of sub-beams having different propagation angles.
  • the beam sections of different sub-beams may be the same or different, and since the mirror does not change the divergence state of the beam, each beam The beam is still a divergent beam.
  • the beam splitting unit 40 may also use other optical components, such as prisms, as long as it can divide a beam of light into light of different beam propagation angles. In the present embodiment, the number of sub-beams formed by the beam splitting unit 40 is 2 or more.
  • the bottom of the LED light source 10 is provided with a PCB substrate 130.
  • the bracket 70 is directly disposed on the PCB substrate 130.
  • the LED light source 10 can be directly disposed on the PCB substrate 130.
  • the PCB substrate 130 is made of aluminum or copper material, and has good heat conduction effect. The heat generated on the LED light source 10 is quickly dissipated.
  • a middle portion of the bracket 70 is provided with a recess 710 corresponding to the LED light source 10 , and the LED light source 10 is disposed in the recess 710 .
  • the LED light source 10 is positioned by the recess 710 to prevent its movement relative to the bracket 70.
  • the side and the bottom of the LED light source 10 are covered with a silica gel 140.
  • the top of the silica gel 140 is not lower than the top of the LED light source 10, that is, the LED light source 10
  • the fixing is performed by the silica gel 140, and the two are integrated and placed in the holder 70, and the three do not move relative to each other.
  • the plurality of diverged sub-beams split by the splitting unit 40 are collimated by the collimating lens 50 to become a plurality of parallel beams.
  • Each parallel beam corresponds to a split beam sub-beam, and different parallel beams have different propagation angles.
  • the splitting unit 40 has another function of dividing a beam of a large beam section into a plurality of sub-beams of a small beam section. Since the beam section of each sub-beam is smaller, a collimator lens 50 of a small aperture can be selected, thereby reducing The volume of the entire system.
  • the mirror array 60 includes a plurality of small mirrors 610.
  • each of the small mirrors 610 is square, and the side length is 1-10 mm, and the number of small mirrors 610 is 40.
  • the number of small mirrors 610 is as large as possible.
  • the plurality of small mirrors 610 may be arranged regularly or in a disorderly manner.
  • the reflecting surfaces of all the small mirrors 610 form a common reflecting surface, and the reflecting surface is preferably a curved surface, and the curved surface may be a concave surface or a convex surface.
  • the patterns projected by all the small mirrors can be dispersed, and the curvature of the control surface can control the size of the pattern dispersion range.
  • a preferred solution is to cut a large mirror into a 4 mm array of small mirrors and then attach it to a curved member so that a curved mirror array can be formed.
  • the splitting unit 40 divides a beam of light into M sub-beams while each sub-beam is incident on the mirror array 60, it covers the N small mirror units in the mirror array 60, so that it can be projected. M*N pattern images, and the patterns are spread out from each other on the projection surface to form a starry illumination effect.
  • the number of projection patterns can be greatly increased in the case where the number of small mirrors included in the mirror array 60 is limited.
  • the starlight projection lamp further comprises a driving mechanism 80 connected to the mirror array 60, and the driving mechanism 80 drives the mirror array 60 to rotate, thereby changing the outgoing direction of the light to form a dynamic projection effect.
  • the starlight projection lamp provided by the present invention includes an LED light source 10, a first aperture 20, a second aperture 30, a collimating lens 50, and sequentially arranged along the optical path.
  • the first aperture 20 is provided with a first light-passing aperture 210 corresponding to the LED light source 10
  • the second aperture 30 is provided with a second light-passing aperture 310, the first pass
  • the size of the light hole 210 is smaller than the size of the light emitting surface of the LED light source 10.
  • the light collecting angle of the second light passing hole 310 is smaller than the collecting angle of the light by the first light passing hole 210.
  • the LED light source 10 is an LED chip, and its light emitting surface is equivalent to the upper surface of the chip.
  • a first light passing through the light emitting surface of the LED light source 10 is disposed on the first aperture 20
  • the hole 210 thereby reducing the size of the spot to project more stars, improving the projection effect; simultaneously setting the second aperture 30, providing the second aperture 30 on the second aperture 30, and the second aperture
  • the collecting angle ⁇ of the pair of light rays 310 is smaller than the collecting angle ⁇ of the light passing through the first light passing hole 210, as shown in FIG. 4, thereby shielding the stray light emitted from the first light passing hole 210 well, thereby further improving the starry sky. Projection effect.
  • the light collecting angle ⁇ of the first light passing hole 210 is the maximum angle formed by the light emitted by the LED light source 10 to the first light passing hole 210, and the light collecting angle of the second light passing hole 310 is collected. That is, the effective aperture of the second light-passing aperture 310 is opposite to the opening angle of the first light-passing aperture 210.
  • the starlight projection lamp further includes a bracket 70, and the LED light source 10, the first aperture 20, and the second aperture 30 are sequentially disposed on the bracket 70.
  • the LED light source 10, the first The aperture 20 and the second aperture 30 are disposed on the same bracket 70.
  • they may be disposed on different brackets 70, and are designed according to actual needs.
  • the bracket 70 is respectively provided with a groove 710 adapted to the LED light source 10, and a first step 720 and a second aperture 30 adapted to the first aperture 20.
  • the LED light source 10 is located in the recess 710.
  • the recess 710 is provided with one, and the plurality of LED light sources 10 are integrated, and are disposed in the recess 710.
  • the first aperture 20 is mounted on the first step 720
  • the second aperture 30 is mounted on the second step 730.
  • the first step 720 and the second step 720 are convenient to control the gap between the LED light source 10, the first aperture 20 and the second aperture 30.
  • the first aperture 20 and the LED light source The distance between the two apertures is 0.2 to 1 mm, and the thickness of the first aperture 20 is less than 0.5 mm. Since the surface temperature of the LED light source 10 is high, the first aperture 20 cannot be directly attached to the LED light source 10, otherwise it is easy Damaged, affecting the service life, of course, the distance between the first aperture 20 and the LED light source 10 should not be too large, so as not to affect the brightness of the spot and ultimately affect the brightness of the star.
  • the thickness of the first aperture 20 is controlled within 0.5 mm. When the thickness is large, the light entering the first light-passing aperture 210 is absorbed by the inner wall, which affects the brightness of the spot.
  • the first aperture 20 and the second aperture 30 are both made of an opaque material.
  • the first aperture 20 and the second aperture 30 may be made of a metal material coated with a black layer, which can absorb light or reflect light while ensuring surface flatness.
  • the starlight projection lamp further comprises a beam splitting unit 40 located in front of the collimating lens 50 along the optical path, the beam splitting unit 40 is composed of a plurality of mirrors 410, and the reflecting surfaces of any two mirrors 410 are not Coplanar.
  • the beam splitting unit 40 is composed of a plurality of mirrors 410, and the reflecting surfaces of any two mirrors 410 are not Coplanar.
  • each beam of light is divided into a plurality of sub-beams having different propagation angles.
  • the beam sections of different sub-beams may be the same or different, since the mirror 410 does not change the beam. Divergent state, so each beam of beam is still a divergent beam.
  • the beam splitting unit 40 may also use other optical components, such as prisms, as long as it can divide a beam of light into light of different beam propagation angles.
  • the number of sub-beams formed by the beam splitting unit 40 is 2 or more.
  • the second light-passing aperture 310 collects light at the same angle as the optical system of the optical system composed of the beam splitting unit 40 and the collimating lens 50.
  • the second light passing hole 310 only allows light in the light collecting angle of the optical system composed of the splitting unit 40 and the collimating lens 50 to pass, and all the light passing through can be collimated by the collimating lens 50 and projected onto the mirror.
  • the array 60 is emitted and formed to form a starlight projection effect, and the light larger than the collection angle is absorbed or reflected by the second aperture 30 to avoid stray light and affect the illumination effect.
  • the starlight projection lamp includes at least two LED light sources 10 arranged in a gap and having different colors.
  • the holes 210 are in one-to-one correspondence with the LED light source 10.
  • the second light-passing holes 310 on the second aperture 30 are in one-to-one correspondence with the first light-passing holes 210, and the LED light source 10 is projected to adjacent LEDs.
  • the minimum incident angle of the first light-passing hole 210 corresponding to the light source 10 is greater than half of the light-collecting angle of the second light-passing hole 310 corresponding to the first light-passing hole 210.
  • a plurality of LED light sources 10 having different gaps and different colors are disposed to realize a star-shaped projection effect of a plurality of colors to meet a higher projection requirement.
  • the LED light sources 10 having four different colors are taken as an example, respectively. It is a red, green, blue and white LED light source 10, four different color LED light sources 10 are arranged to form a rectangle or a diamond shape or other shape, fixed on the mounting board, and there is no between the adjacent two LED light sources 10
  • the light transmissive layer 120 is as shown in FIG. 8 , so that the light emitted by one LED light source 10 is prevented from being projected from the side to the other LED light source 10 to form stray light, which affects the projection effect.
  • the opaque layer 120 may be a diffuse reflective material. It can be made, for example, by using an aluminum plate or a mixture of silica and silica gel or a mixture of titanium oxide and silica gel or a mixture of silicon carbide and silica gel, although it is also possible to use other materials having a higher reflectance or a light absorbing material.
  • first light-passing hole 210 having a smaller size than the light-emitting surface of the corresponding LED light source 10 on the first aperture 20
  • the size of the light spot is reduced to project more stars, thereby improving the projection effect
  • a second light-passing hole 310 corresponding to the first light-passing hole 210 is disposed on the 30, and a minimum incident angle ⁇ of the LED light source 10 projected to the first light-passing hole 210 corresponding to the adjacent LED light source 10 is greater than the first
  • the second light-passing hole 310 corresponding to the light-passing hole 210 is half of the collection angle ⁇ of the light, as shown in FIG. 7, so that the stray light emitted from the first light-passing hole 210 is well shielded, thereby further improving the starry sky. Projection effect.
  • the LED light source 10 is coaxially disposed with the corresponding first light passing hole 210 and the second light passing hole 310.
  • the LED light source 10, the first light passing hole 210 and the second light passing hole 310 are coaxially arranged, thereby conveniently designing the sizes of the first light passing hole 210 and the second light passing hole 310 and controlling the LED light source 10,
  • the relative positions of the first apertures 20 and the second apertures 30 also facilitate the collection angle of the second apertures 310 to be smaller than the collection angle of the first apertures 210.
  • the sub-beams of the plurality of different color beams passing through the beam splitting unit 40 are collimated by the same collimating lens 50, and the plurality of parallel sub-beams after collimation are finally incident on the mirror array 60. , forming a variety of projection patterns of various colors.
  • the LED light sources 10 of different colors can be turned on or turned on at the same time to form more projection effects to meet different needs.
  • the mirror array 60 includes a plurality of small mirrors 610.
  • each of the small mirrors 610 is square, and the side length is 1-10 mm, and the number of small mirrors 610 is 40.
  • each small mirror 610 forms an image on the pattern projection on the pattern sheet, in order to obtain as many projection images as possible, the number of small mirrors 610 is as large as possible.
  • the plurality of small mirrors 610 may be arranged regularly or in a disorderly manner.
  • the reflecting surfaces of all the small mirrors 610 form a common reflecting surface, and the reflecting surface is preferably a curved surface, and the curved surface may be a concave surface or a convex surface.
  • a large mirror can be cut into a 4mm small mirror array and then attached to a curved member to form a curved mirror array.
  • the splitting unit 40 divides a beam of light into M sub-beams while each sub-beam is incident on the mirror array 60, it covers the N small mirror units in the mirror array 60, so that each beam can finally M*N pattern images are projected, and the patterns are dispersed on each other on the projection surface to form a starry illumination effect.
  • the number of projection patterns can be greatly increased in the case where the number of small mirrors included in the mirror array 60 is limited.
  • the starlight projection lamp further comprises a driving mechanism 80 connected to the mirror array 60, and the driving mechanism 80 drives the mirror array 60 to rotate, thereby changing the outgoing direction of the light to form a dynamic projection effect.
  • the starlight projection lamp sequentially includes an LED light source 10, a first aperture 20, a beam splitting unit 40, a collimating lens 50, and a mirror array 60 along the optical path, on the first aperture 20
  • a first light-passing hole 210 corresponding to the LED light source 10 is disposed, and the size of the first light-passing hole 210 is smaller than the size of the LED light source 10.
  • the first light aperture 20 corresponding to the LED light source 10 is disposed on the first aperture 20 for transmitting the light emitted by the LED light source 10, and the size of the first light transmission hole 210 is set.
  • a second aperture 30 is disposed along the optical path of the first aperture 20, and a second aperture 310 is disposed on the second aperture 30, and the light source is projected to the first light aperture 210 corresponding to the adjacent light source.
  • the incident angle is greater than half of the light collecting angle of the second light passing hole 310 corresponding to the first light passing hole 210, so that the stray light emitted from the first light passing hole 210 is well shielded, thereby further improving the star sky.
  • the projection effect, the starlight projection lamp of the invention realizes the projection effect of a plurality of colors, and the cost is low, and the application is extensive.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种星空投影灯，沿光路依次包括LED光源（10）、第一光阑（20）、分束单元（40）、准直透镜（50）和反射镜阵列（60），第一光阑（20）靠近LED光源（10）的发光面而设置，在第一光阑（20）上设置有位置与LED光源（10）的发光面对应的第一通光孔（210），第一通光孔（210）的尺寸小于LED光源（10）的发光面的尺寸，通过设置第一光阑（20），并且在第一光阑（20）上设置位置与LED光源（10）对应的第一通光孔（210），用于透射LED光源（10）发出的光线，并且第一通光孔（210）的尺寸比LED光源（10）的尺寸小，从而降低光斑的大小，提高光斑的亮度，无需设置聚焦透镜等的其它部件，大大降低了投影等的结构和占用体积。

Description

星空投影灯 技术领域
本发明涉及照明技术领域，具体涉及一种星空投影灯。
背景技术
星空投影灯，是一种在墙壁、天花板、草坪上投影出无数星星或雪花等图案的装饰照明装置，用在室内如KTV包厢，室外如庭院、草坪、植物上，可以起到营造氛围，装饰景观的作用，在生活中具有非常广泛的应用。
目前市场上的星空投影灯都是采用激光二极管作为光源，但激光二极管几乎都是红绿蓝单色的，无法有效合成白色，因而难以形成白色的图案。此外，目前的星空投影灯通常是单色投影灯，需要多个投影灯才能实现彩色效果，使用不方便，且现有的星空投影灯体积较大，成本较高，未能满足实际应用需要。另外现有的星空投影灯投影出的星星数量有限，影响星空投影效果。
发明内容
本发明对现有技术中存在的问题，提供了一种体积小、结构简单且亮度高的LED星空投影灯。
为了解决上述技术问题，本发明的技术方案是：
一种星空投影灯，沿光路依次包括LED光源、第一光阑、分束单元、准直透镜和反射镜阵列，所述第一光阑靠近LED光源发光面设置，所述第一光阑上设有位置与所述LED光源发光面对应的第一通光孔，所述第一通光孔的尺寸小于所述LED光源发光面的尺寸。
进一步的，还包括用于安装所述LED光源和第一光阑的支架，所述支架的 顶部高出所述LED光源的顶部，所述第一光阑设于所述支架顶部。
进一步的，所述第一光阑与所述LED光源发光面的距离小于1mm。
进一步的，所述第一光阑上设有多个间隔设置的图案。
进一步的，所述分束单元由多个反射镜组成，且任意两个反射镜的反射面不共面。
进一步的，所述LED光源的侧面和底部均包覆有硅胶，所述LED光源固定于硅胶中。
本发明还提供了一种LED星空投影灯，包括沿光路依次设置的LED光源、第一光阑、第二光阑、准直透镜和反射镜阵列，所述第一光阑上设有与LED光源位置对应的第一通光孔，所述第二光阑上设有与所述第一通光孔位置对应的第二通光孔，所述第一通光孔的尺寸小于所述LED光源的发光面的尺寸，所述第二通光孔对光线的收集角度小于第一通光孔对光线的收集角度。
进一步的，还包括支架，所述LED光源、第一光阑、第二光阑依次间距设于所述支架上，
进一步的，所述LED光源至少包括两个间隙排列且发光颜色不同的LED单元。
进一步的，所述第一光阑上至少包括两个第一通光孔，且所述第一通光孔的位置与所述LED光源中LED单元一一对应。
进一步的，相邻两个所述LED单元之间设有不透光层。
进一步的，还包括沿光路位于所述准直透镜前方的分束单元，所述分束单元由多个反射镜组成，且任意两个反射镜的反射面不共面。
进一步的，所述第一光阑与所述LED光源发光面之间的距离小于1mm。
进一步的，还包括与所述反射镜阵列连接的驱动机构，带动所述反射镜阵列转动。
本发明提供的星空投影灯，沿光路依次包括LED光源、第一光阑、分束单元、准直透镜、反射镜阵列以及用于安装所述LED光源和第一光阑的支架，所 述第一光阑靠近LED光源发光面设置，所述第一光阑上设有位置与所述LED光源发光面对应的第一通光孔，所述第一通光孔的尺寸小于所述LED光源发光面的尺寸。所述第一光阑上设有位置与所述光源对应的第一通光孔，所述第一通光孔的尺寸小于所述LED光源的尺寸。通过设置第一光阑，并在第一光阑上设置位置与LED光源对应的第一通光孔，用于透射LED光源发出的光线，且第一通光孔的尺寸比LED光源的尺寸小，从而降低光斑的大小，提高光斑的亮度，无需设置聚焦透镜等其他部件，大大降低了投影灯的结构和占用体积。此外，在第一光阑沿光路后方设置第二光阑，并在第二光阑上设置第二通光孔，且使光源投射到相邻光源对应的第一通光孔的入射角大于该第一通光孔对应的第二通光孔对光线的收集角度的一半，从而很好地屏蔽了从第一通光孔处出射的杂散光，进一步提高了星空投影效果，本发明星空投影灯实现了多种颜色的投影效果，且成本很低，提高了适用广泛性。
附图说明
图1是本发明实施例1中星空投影灯一具体结构示意图；
图2是本发明实施例1中LED光源一具体的结构示意图；
图3是本发明实施例2中星空投影灯一具体结构示意图；
图4是图3对应的LED光源和第一、第二光阑的工作示意图；
图5是本发明实施例2中支架的结构示意图；
图6是本发明实施例3中星空投影灯一具体结构示意图；
图7是图5对应的LED光源和第一、第二光阑的工作示意图；
图8是图5对应的LED光源的结构示意图。
图中所示：10、LED光源；120、不透光层；130、PCB基板；140、硅胶；20、第一光阑；210、第一通光孔；30、第二光阑；310、第二通光孔；40、分束单元；410、反射镜；50、准直透镜；60、反射镜阵列；610、小反射镜；70、支架；710、凹槽；720、第一台阶；730、第二台阶；80、驱动机构。
具体实施方式
下面结合附图对本发明作详细描述。
实施例1
如图1所示，本发明提供了一种星空投影灯，沿光路依次包括LED光源10、第一光阑20、分束单元40、准直透镜50和反射镜阵列60。所述第一光阑20上设有位置与所述LED光源10对应的第一通光孔210，所述第一通光孔210的尺寸小于所述LED光源10发光面的尺寸。具体的，LED光源10包括LED芯片，通过支架70进行支撑，将第一光阑20直接贴设在支架120的顶部，图1中，第一光阑20直接盖设于支架70上方，当然也可以在支架70上设置与第一光阑20相适配的第一台阶，将第一光阑20限位在第一台阶上。在第一光阑20上设置位置与LED光源10对应的第一通光孔210，用于透射LED芯片110发出的光线，且第一通光孔210的尺寸比LED光源10发光面的尺寸小，从而降低光斑的大小，提高光斑的亮度，无需设置聚焦透镜等其他部件，大大降低了投影灯的结构和占用体积。
优选的，该星空投影灯还包括用于安装所述LED光源10和第一光阑的支架70，本实施例中，LED光源10和第一光阑安装在同一支架70上，当然也可以安装在不同的支架70上，根据实际需要进行设计，如图1所示，所述支架120的顶部高出所述LED光源10的顶部，所述第一光阑20贴设于所述支架70顶部，当然支架70的顶部也可以高出第一光阑70，此时只需在支架70上设置与第一光阑20相适配的台阶对其进行限位即可。
优选的，所述第一光阑20与所述LED光源10发光面的距离小于1mm。具体的，由于LED芯片表面温度很高，因此第一光阑20不能直接贴设在LED芯片上，当然第一光阑20与LED芯片的距离也不能太大，以免影响光斑的聚焦效果，影响投影灯的亮度。
优选的，所述第一光阑20上设有多个间隔设置的图案。具体的，LED光源 10发出的光束经过间隔设置的图案后分设成多个光束，图案的形状可以不同，从而提高照明图案多样性和投影图案的数量。
优选的，所述分束单元40由多个反射镜410组成，且任意两个反射镜410的反射面不共面。如此，经过分束单元40的反射，将一束光分成传播角度不同的多个子光束，不同子光束的光束截面可以相同，也可以不同，由于反射镜不会改变光束的发散状态，所以每束子光束依然是发散光束。分束单元40除了选用反射镜，还可以选用其他的光学元件，例如棱镜等，只要能实现将一束光分成若干束传播角度不同的光即可。本实施例中，分束单元40形成的子光束的数量在2束或2束以上。
优选的，所述LED光源10的底部设有PCB基板130。具体的，本实施例中，支架70直接设于PCB基板130上，当然也可以直接将LED光源10置于PCB基板130上，PCB基板130采用铝或铜材料制成，导热效果好，用于将LED光源10上产生的热量快速散发出去。
请继续参照图1，所述支架70的中部设有与所述LED光源10对应的凹槽710，所述LED光源10置于所述凹槽710内。通过凹槽710对LED光源10进行定位，避免其相对支架70发生移动。
如图2所示，为另一种LED光源10结构，所述LED光源10的侧面和底部均包覆有硅胶140，硅胶140的顶部不低于LED光源10的顶部，即所述LED光源10通过硅胶140进行固定，两者形成一体，并置于支架70内，三者不会相对移动。
在本实施例中，准直透镜50设置在分束单元40之后，经分束单元40分束后的多个发散的子光束，再透过准直透镜50准直，变成多个平行光束。每个平行光束对应一个分束后的子光束，且不同平行光束的传播角度不同。分束单元40还有另一个作用，将一个大光束截面的光束分成多个小光束截面的子光束，由于每个子光束的光束截面更小，因而可以选用小口径的准直透镜50，从而缩小整个系统的体积。
经准直透镜50准直之后的多个平行子光束，最后入射到反射镜阵列60上，形成无数的投影图案。在本实施例中，所述的反射镜阵列60包含多个小反射镜610，优选的，每个小反射镜610为方形，且边长为1-10mm，小反射镜610的数量在40个以上，由于每个小反射镜610都会对图案片上的图案投影形成一个像，为了获得尽可能多的投影像，小反射镜610的数量越多越好。所述多个小反射镜610可以规则排列，也可以杂乱排列，所有小反射镜610的反射面形成一个共同的反射面，该反射面优选为曲面，所述曲面可以是凹面，也可以是凸面，通过将小反射镜阵列排布成曲面，可以使所有小反射镜投射出去的图案分散开，控制曲面的曲率可以控制图案分散范围的大小。一种优选的方案是，将一个大片反射镜，切成4mm的小反射镜阵列，然后粘贴到一个曲面构件上，如此便可形成曲面反射镜阵列。如果分束单元40将一束光分成了M个子光束，同时每个子光束入射到反射镜阵列60上时，又覆盖了反射镜阵列60中的N个小反射镜单元，这样最终便可以投影出M*N个图案像，且图案在投影面上彼此分散开，形成满天星的照明效果。这样，通过分束单元40的分束作用，可以在反射镜阵列60所包含的小反射镜数量有限的情况下，极大的增加投影图案的数量。
优选的，该星空投影灯还包括与所述反射镜阵列60连接的驱动机构80，所述驱动机构80带动所述反射镜阵列60转动，从而改变光线的出射方向，以形成动态投影效果。
实施例2
与实施例1中不同的是，如图3所示，本发明提供的星空投影灯，包括沿光路依次设置的LED光源10、第一光阑20、第二光阑30、准直透镜50和反射镜阵列60，所述第一光阑20上设有与LED光源10对应的第一通光孔210，所述第二光阑30上设有第二通光孔310，所述第一通光孔210的尺寸小于所述LED光源10的发光面的尺寸，所述第二通光孔310对光线的收集角度小于第一通光孔210对光线的收集角度。具体的，LED光源10为LED芯片，其发光面等同 于芯片的上表面，通过设置第一光阑20，并在第一光阑20上设置尺寸小于LED光源10的发光面的第一通光孔210，从而缩小光斑的大小，以投影出更多的星星，提高投影效果；同时设置第二光阑30，在第二光阑30上设置第二通光孔310，且第二通光孔310对光线的收集角度α小于第一通光孔210对光线的收集角度β，如图4所示，从而很好地屏蔽了从第一通光孔210处出射的杂散光，进一步提高了星空投影效果。需要说明的是，第一通光孔210对光线的收集角度α即LED光源10发出的光线投射到第一通光孔210所形成的最大夹角，第二通光孔310对光线的收集角度即第二通光孔310的有效口径相对第一通光孔210的张角。
优选的，该星空投影灯还包括支架70，所述LED光源10、第一光阑20、第二光阑30依次间距设于所述支架70上，本实施例中，LED光源10、第一光阑20、第二光阑30设于同一个支架70上，当然也可以设于不同的支架70上，根据实际需要进行设计。
如图5所示，所述支架70上分别设有与所述LED光源10适配的凹槽710、以及与所述第一光阑20适配的第一台阶720和与第二光阑30适配的第二台阶730，所述LED光源10限位于所述凹槽710内，本实施例中，凹槽710设有一个，多个LED光源10作为一体，限位于该凹槽710中。所述第一光阑20安装于第一台阶720上，所述第二光阑30安装于第二台阶730上。通过在支架70上设置凹槽710、第一台阶720和第三台阶730，分别对LED光源10、第一光阑20和第二光阑30的位置进行限定，避免其发生相对移动，影响投影效果，同时通过第一台阶720和第二台阶720便于控制LED光源10、第一光阑20和第二光阑30三者之间的间隙，优选的，第一光阑20与所述LED光源10之间的距离为0.2～1mm，所述第一光阑20的厚度小于0.5mm，由于LED光源10表面温度很高，因此第一光阑20不能直接贴设在LED光源10上，否则容易受损、影响使用寿命，当然第一光阑20与LED光源10的距离也不能太大，以免影响光斑的亮度，以及最终影响星星的亮度。第一光阑20的厚度控制在0.5mm内， 避免其厚度较大时，进入第一通光孔210内的光线会被内壁吸收，影响光斑亮度。
优选的，所述第一光阑20和第二光阑30均采用不透光材料制成。具体的，第一光阑20和第二光阑30可以采用镀黑色层的金属材料制成，可以吸收光线或反射光线，同时需保证表面平整度。
优选的，该星空投影灯还包括沿光路位于所述准直透镜50前方的分束单元40，所述分束单元40由多个反射镜410组成，且任意两个反射镜410的反射面不共面。如此，不同颜色的光束经过分束单元40的反射后，每束光均分成传播角度不同的多个子光束，不同子光束的光束截面可以相同，也可以不同，由于反射镜410不会改变光束的发散状态，所以每束子光束依然是发散光束。分束单元40除了选用反射镜410，还可以选用其他的光学元件，例如棱镜等，只要能实现将一束光分成若干束传播角度不同的光即可。本实施例中，分束单元40形成的子光束的数量在2束或2束以上。
优选的，所述第二通光孔310对光线的收集角度与分束单元40和准直透镜50组成的光学系统的光线收集角度相同。具体的，第二通光孔310只允许分束单元40和准直透镜50组成的光学系统的光线收集角度内的光线通过，通过的所有光线可以被准直透镜50准直后投射到反射镜阵列60上并出射形成星光投影效果，大于该收集角度的光线均被第二光阑30吸收或反射，以免产生杂光，影响照明效果。
实施例3
如图6所示，与实施例1-2不同的是，该星空投影灯至少包括两个间隙排列且颜色不同的LED光源10，优选的，所述第一光阑20上的第一通光孔210与所述LED光源10一一对应，所述第二光阑30上的第二通光孔310与所述第一通光孔210一一对应，所述LED光源10投射到相邻LED光源10对应的第一通光孔210的最小入射角大于该第一通光孔210对应的第二通光孔310对光线的 收集角度的一半。具体的，设置多个间隙排列且颜色不同的LED光源10以实现多种颜色的星空投影效果，满足更高的投影需求，本实施例中，以四种颜色不同的LED光源10为例，分别是红色、绿色、蓝色和白色的LED光源10，四种不同颜色的LED光源10排列形成矩形或菱形或其他形状，固定于安装板上，且相邻两个LED光源10之间设有不透光层120，如图8所示，从而避免一个LED光源10发出的光从侧面投射到另一个LED光源10上，形成杂光，影响投影效果，该不透光层120可以采用漫反射材料制成，如采用铝板或氧化硅和硅胶的混合物或氧化钛和硅胶的混合物或碳化硅与硅胶的混合物，当然也可以使用其他具有较高的反射率的材料或吸光材料制成。通过在第一光阑20上设置尺寸小于对应LED光源10的发光面的第一通光孔210，从而缩小光斑的大小，以投影出更多的星星，提高投影效果；同时在第二光阑30上设置与第一通光孔210一一对应的第二通光孔310，且使LED光源10投射到相邻LED光源10对应的第一通光孔210的最小入射角γ大于该第一通光孔210对应的第二通光孔310对光线的收集角度β的一半，如图7所示，从而很好地屏蔽了从第一通光孔210处出射的杂散光，进一步提高了星空投影效果。
优选的，所述LED光源10与对应的第一通光孔210以及第二通光孔310之间同轴设置。具体的，将LED光源10、第一通光孔210和第二通光孔310同轴设置，从而方便设计第一通光孔210和第二通光孔310的尺寸以及控制LED光源10、第一光阑20和第二光阑30的相对位置，也便于实现第二通光孔310对光线的收集角度小于第一通光孔210对光线的收集角度。
本实施例中，多种颜色不同的光束经分束单元40后的子光束经同一个准直透镜50进行准直，且准直之后的多个平行的子光束最后入射到反射镜阵列60上，形成无数颜色多样的投影图案。当然不同颜色的LED光源10可以轮流开启也可以同时开启，以形成更多的投影效果，满足不同的需求。在本实施例中，所述的反射镜阵列60包含多个小反射镜610，优选的，每个小反射镜610为方形，且边长为1-10mm，小反射镜610的数量在40个以上，由于每个小反射镜 610都会对图案片上的图案投影形成一个像，为了获得尽可能多的投影像，小反射镜610的数量越多越好。所述多个小反射镜610可以规则排列，也可以杂乱排列，所有小反射镜610的反射面形成一个共同的反射面，该反射面优选为曲面，所述曲面可以是凹面，也可以是凸面，通过将小反射镜阵列排布成曲面，可以使所有小反射镜610投射出去的图案分散开，控制曲面的曲率可以控制图案分散范围的大小。如可以将一个大片反射镜，切成4mm的小反射镜阵列，然后粘贴到一个曲面构件上，如此便可形成曲面反射镜阵列。如果分束单元40将一束光分成了M个子光束，同时每个子光束入射到反射镜阵列60上时，又覆盖了反射镜阵列60中的N个小反射镜单元，这样每个光束最终可以投影出M*N个图案像，且图案在投影面上彼此分散开，形成满天星的照明效果。这样，通过分束单元40的分束作用，可以在反射镜阵列60所包含的小反射镜数量有限的情况下，极大的增加投影图案的数量。
优选的，该星空投影灯还包括与所述反射镜阵列60连接的驱动机构80，所述驱动机构80带动所述反射镜阵列60转动，从而改变光线的出射方向，以形成动态投影效果。
综上所述，本发明提供的星空投影灯，沿光路依次包括LED光源10、第一光阑20、分束单元40、准直透镜50和反射镜阵列60，所述第一光阑20上设有位置与所述LED光源10对应的第一通光孔210，所述第一通光孔210的尺寸小于所述LED光源10的尺寸。通过设置第一光阑20，并在第一光阑20上设置位置与LED光源10对应的第一通光孔210，用于透射LED光源10发出的光线，且第一通光孔210的尺寸比LED光源10的尺寸小，从而降低光斑的大小，提高光斑的亮度，无需设置聚焦透镜等其他部件，大大降低了投影灯的结构和占用体积。此外，在第一光阑20沿光路后方设置第二光阑30，并在第二光阑30上设置第二通光孔310，且使光源投射到相邻光源对应的第一通光孔210的入射角大于该第一通光孔210对应的第二通光孔310对光线的收集角度的一半，从而很好地屏蔽了从第一通光孔210处出射的杂散光，进一步提高了星空投影效 果，本发明星空投影灯实现了多种颜色的投影效果，且成本很低，提高了适用广泛性。
虽然说明书中对本发明的实施方式进行了说明，但这些实施方式只是作为提示，不应限定本发明的保护范围。在不脱离本发明宗旨的范围内进行各种省略、置换和变更均应包含在本发明的保护范围内。

Claims (14)

  1. 一种星空投影灯，其特征在于，沿光路依次包括LED光源、第一光阑、分束单元、准直透镜和反射镜阵列，所述第一光阑靠近LED光源发光面设置，所述第一光阑上设有位置与所述LED光源发光面对应的第一通光孔，所述第一通光孔的尺寸小于所述LED光源发光面的尺寸。
  2. 根据权利要求1所述的星空投影灯，其特征在于，还包括用于安装所述LED光源和第一光阑的支架，所述支架的顶部高出所述LED光源的顶部，所述第一光阑设于所述支架顶部。
  3. 根据权利要求1所述的星空投影灯，其特征在于，所述第一光阑与所述LED光源发光面的距离小于1mm。
  4. 根据权利要求1所述的星空投影灯，其特征在于，所述第一光阑上设有多个间隔设置的图案。
  5. 根据权利要求1所述的星空投影灯，其特征在于，所述分束单元由多个反射镜组成，且任意两个反射镜的反射面不共面。
  6. 根据权利要求1所述的星空投影灯，其特征在于，所述LED光源的侧面和底部均包覆有硅胶，所述LED光源固定于所述硅胶中。
  7. 一种LED星空投影灯，其特征在于，包括沿光路依次设置的LED光源、第一光阑、第二光阑、准直透镜和反射镜阵列，所述第一光阑上设有与LED光源位置对应的第一通光孔，所述第二光阑上设有与所述第一通光孔位置对应的第二通光孔，所述第一通光孔的尺寸小于所述LED光源的发光面的尺寸，所述第二通光孔对光线的收集角度小于第一通光孔对光线的收集角度。
  8. 根据权利要求7所述的星空投影灯，其特征在于，还包括支架，所述LED光源、第一光阑、第二光阑依次间距设于所述支架上。
  9. 根据权利要求7所述的星空投影灯，其特征在于，所述LED光源至少包括两个间隙排列且发光颜色不同的LED单元。
  10. 根据权利要求9所述的星空投影灯，其特征在于，所述第一光阑上至少包括两个第一通光孔，且所述第一通光孔的位置与所述LED光源中LED单元一一对应。
  11. 根据权利要求9所述的星空投影灯，其特征在于，相邻两个所述LED单元之间设有不透光层。
  12. 根据权利要求7所述的星空投影灯，其特征在于，还包括沿光路位于所述准直透镜前方的分束单元，所述分束单元由多个反射镜组成，且任意两个反射镜的反射面不共面。
  13. 根据权利要求7所述的星空投影灯，其特征在于，所述第一光阑与所述LED光源发光面之间的距离小于1mm。
  14. 根据权利要求7所述的星空投影灯，其特征在于，还包括与所述反射镜阵列连接的驱动机构，带动所述反射镜阵列转动。
PCT/CN2019/077063 2018-04-02 2019-03-05 星空投影灯 WO2019192280A1 (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201820456376.7 2018-04-02
CN201820456376.7U CN208295642U (zh) 2018-04-02 2018-04-02 一种led星空投影灯
CN201810879129.2A CN108826122B (zh) 2018-08-03 2018-08-03 一种星空投影灯
CN201821254782.1 2018-08-03
CN201821254782.1U CN208546845U (zh) 2018-08-03 2018-08-03 Led星空投影灯
CN201810879129.2 2018-08-03

Publications (1)

Publication Number Publication Date
WO2019192280A1 true WO2019192280A1 (zh) 2019-10-10

Family

ID=68099754

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/077063 WO2019192280A1 (zh) 2018-04-02 2019-03-05 星空投影灯

Country Status (1)

Country Link
WO (1) WO2019192280A1 (zh)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2952952A1 (de) * 2014-06-05 2015-12-09 Hejtec GmbH Vorrichtung zur erzeugung eines künstlichen sternenhimmels
US20170038031A1 (en) * 2011-11-15 2017-02-09 Tseng-Lu Chien LED and/or Laser Light Device Has More Than One Optic Elements and wide flat opening or sphere outer cover to create big range image or lighted pattern
CN106813192A (zh) * 2016-11-30 2017-06-09 佛山市兴华源机械设备有限公司 一种星空投影灯
CN107859962A (zh) * 2017-11-17 2018-03-30 深圳市龙侨华实业有限公司 一种模拟天空效果的投射灯
CN207438455U (zh) * 2017-11-17 2018-06-01 深圳市龙侨华实业有限公司 一种模拟天空效果的投射灯
CN108613048A (zh) * 2018-04-02 2018-10-02 佛山市南海区协隆电器有限公司 星空投影灯
CN108826122A (zh) * 2018-08-03 2018-11-16 佛山市南海区协隆电器有限公司 一种星空投影灯
CN208295641U (zh) * 2018-04-02 2018-12-28 佛山市南海区协隆电器有限公司 一种星空投影灯
CN208295642U (zh) * 2018-04-02 2018-12-28 佛山市南海区协隆电器有限公司 一种led星空投影灯
CN208546845U (zh) * 2018-08-03 2019-02-26 佛山市南海区协隆电器有限公司 Led星空投影灯
CN208546844U (zh) * 2018-08-03 2019-02-26 佛山市南海区协隆电器有限公司 一种星空投影灯

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170038031A1 (en) * 2011-11-15 2017-02-09 Tseng-Lu Chien LED and/or Laser Light Device Has More Than One Optic Elements and wide flat opening or sphere outer cover to create big range image or lighted pattern
EP2952952A1 (de) * 2014-06-05 2015-12-09 Hejtec GmbH Vorrichtung zur erzeugung eines künstlichen sternenhimmels
CN106813192A (zh) * 2016-11-30 2017-06-09 佛山市兴华源机械设备有限公司 一种星空投影灯
CN107859962A (zh) * 2017-11-17 2018-03-30 深圳市龙侨华实业有限公司 一种模拟天空效果的投射灯
CN207438455U (zh) * 2017-11-17 2018-06-01 深圳市龙侨华实业有限公司 一种模拟天空效果的投射灯
CN108613048A (zh) * 2018-04-02 2018-10-02 佛山市南海区协隆电器有限公司 星空投影灯
CN208295641U (zh) * 2018-04-02 2018-12-28 佛山市南海区协隆电器有限公司 一种星空投影灯
CN208295642U (zh) * 2018-04-02 2018-12-28 佛山市南海区协隆电器有限公司 一种led星空投影灯
CN108826122A (zh) * 2018-08-03 2018-11-16 佛山市南海区协隆电器有限公司 一种星空投影灯
CN208546845U (zh) * 2018-08-03 2019-02-26 佛山市南海区协隆电器有限公司 Led星空投影灯
CN208546844U (zh) * 2018-08-03 2019-02-26 佛山市南海区协隆电器有限公司 一种星空投影灯

Similar Documents

Publication Publication Date Title
US11879616B2 (en) Adjustable-beam luminaires
US9467670B2 (en) Projection display device
US8262252B2 (en) Illumination system
US8007134B2 (en) Diffused light projector
US20110116265A1 (en) Illumination Apparatus
EP2789897A1 (en) Light source and illuminating device
KR100677551B1 (ko) Ｌｅｄ 패키지, 조명계 및 이를 채용한 프로젝션 시스템
US7600894B1 (en) Luminaires and optics for control and distribution of multiple quasi point source light sources such as LEDs
JP2010529631A (ja) 調節可能なビーム形状を持つｌｅｄベースの照明器具
KR20150143656A (ko) 발광 장치 및 프로젝션 시스템
CN107023782B (zh) 发光设备
CN108826122B (zh) 一种星空投影灯
CN210142255U (zh) 照明系统以及投影装置
US20120120647A1 (en) Illumination device for stage lighting with high light-combining efficiency
WO2016208378A1 (ja) 液晶表示装置
TW201918783A (zh) X型調整模組及使用其之合光裝置與投影機
CN208546844U (zh) 一种星空投影灯
US8356914B2 (en) Luminaires and optics for control and distribution of multiple quasi point source light sources such as LEDs
CN208295642U (zh) 一种led星空投影灯
WO2019192280A1 (zh) 星空投影灯
JP2017211603A (ja) 光源装置及び投写型映像表示装置
JP2005250394A (ja) 照明装置
CN208546845U (zh) Led星空投影灯
CN114216078A (zh) 照明灯具
CN212255996U (zh) 照明装置、图案照明装置及图案照明系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19781165

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19781165

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 19781165

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 22/04/2021)

122 Ep: pct application non-entry in european phase

Ref document number: 19781165

Country of ref document: EP

Kind code of ref document: A1