CN208546842U - A kind of polychrome starry sky projector - Google Patents
A kind of polychrome starry sky projector Download PDFInfo
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- CN208546842U CN208546842U CN201821254557.8U CN201821254557U CN208546842U CN 208546842 U CN208546842 U CN 208546842U CN 201821254557 U CN201821254557 U CN 201821254557U CN 208546842 U CN208546842 U CN 208546842U
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- light
- light source
- polychrome
- different colours
- starry sky
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Abstract
The utility model discloses a kind of polychrome starry sky projectors, it successively include polychromatic source group, condenser lens, diaphragm and reflection mirror array, the light source module group and the combined beam unit in the optical path of the light source module group of different colours that polychromatic source group includes at least two different colours, combined beam unit is used to for the light that the light source module group of different colours issues being uniformly mixed into as light beam, each light source module group successively includes light source and hemispherical reflector, the inner wall of hemispherical reflector is spherical reflective surface, light source is located at the centre of sphere of dome-type reflector, hemispherical reflector is equipped with light hole.Light source is placed at the centre of sphere of the reflecting surface of hemispherical reflector, not only improve the brightness in light source luminescent face and the effect of star space projection, also make the dispersion angle of the light beam of different colours as identical as possible, to make it mix more uniform, the light source module group of different colours issues the light of different colours, monochromatic light and mixed light alternating projection may be implemented, keep the effect of projection more diversified.
Description
Technical field
The utility model relates to lighting technical fields, and in particular to a kind of polychrome starry sky projector.
Background technique
Starry sky projector is a kind of decoration that the patterns such as billions of stars or snowflake are projected out on wall, ceiling, lawn
Lighting device, with such as KTV box, outdoor is as that can play construction atmosphere, decorate landscape on garden, lawn, plant indoors
Effect has very extensive application in life.
Starry sky projector currently on the market is all using laser diode as light source, but laser diode is nearly all
RGB monochrome, it can not be effectively synthesized white, thus be difficult to form the pattern of white.In addition, current starry sky projector is logical
It is often monochromatic projection lamp, multiple projection lamps is needed just to be able to achieve color effect, it is inconvenient to use, and existing star space projection lamp body
Larger, the higher cost of product, is not able to satisfy practical application needs.In addition the star quantity that existing starry sky projector is projected out has
Limit, influences star space projection effect.
Utility model content
The utility model aiming at the problems existing in the prior art, provides a kind of good more of small in size, at low cost, effect
Color starry sky projector.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of polychrome starry sky projector successively wraps
Polychromatic source group, condenser lens, diaphragm and reflection mirror array are included, the polychromatic source group includes the light of at least two different colours
Combined beam unit in the optical path of source mould group and the light source module group set on the different colours, each light source module group are successively wrapped
Light source and hemispherical reflector are included, the inner wall of the hemispherical reflector is spherical reflective surface, and the light source is located at the hemisphere
At the centre of sphere of type reflector, the hemispherical reflector is equipped with light hole.
Further, the corresponding centre of sphere angle of light hole of the hemispherical reflector is 30~90 °.
Further, the light source module group of the different colours is equipped with 2-6, is distributed in the same side or different two sides or not
Three same sides.
Further, described at least one optical filter of combined beam unit packet or transflection mirror, by the light source die of the different colours
The light that group issues uniformly mixes.
Further, the hemispherical reflector is additionally provided with the first collimation lens, first collimation along the rear of optical path
Lens are corresponding with light hole.
Further, the light source is laser light source or LED light source.
Further, beam splitting unit and the second collimation lens are also successively arranged between the diaphragm and reflection mirror array.
Further, the beam splitting unit includes a solid transparent part, and the solid transparent part includes the plane of incidence, reflecting surface
And exit facet, the reflecting surface is total internal reflection surface, through the light beam after diaphragm successively after the plane of incidence and exit facet
Or the different beamlet of multiple propagation angles, the beamlet are successively formed after the plane of incidence, reflecting surface and exit facet
It projects and is incident on reflection mirror array after being collimated on second collimation lens.
Further, the plane of incidence include at least one intermediate incident area and it is several be located at the intermediate incident area
The marginal incident region of periphery, the intermediate incident area and any marginal incident region are non-coplanar and two neighboring edge enters
It penetrates that region is non-coplanar, is projected on intermediate incident area and marginal incident region respectively by the light beam after diaphragm, projected
Between incident area light beam after reflecting from exit face, the light beam for projecting marginal incident region projects instead after reflecting
It penetrates on face, from exit face after reflective surface.
Further, the marginal incident region is plane, and the reflecting surface includes multiple non-coplanar reflecting regions, institute
Reflecting region and marginal incident region is stated to correspond.
Polychrome starry sky projector provided by the utility model successively includes polychromatic source group, condenser lens, diaphragm and reflection
Lens array, the polychromatic source group include the light source module group of at least two different colours and the light source set on the different colours
Combined beam unit in the optical path of mould group, combined beam unit be used to for the light that the light source module groups of different colours issues being uniformly mixed into for
Light beam, each light source module group successively include light source and hemispherical reflector, and the inner wall of the hemispherical reflector is ball
Face reflecting surface, the light source are located at the centre of sphere of the dome-type reflector, and the hemispherical reflector is equipped with light hole.It is logical
Setting hemispherical reflector is crossed, and light source is placed at the centre of sphere of reflecting surface of hemispherical reflector, and in hemispherical reflector
Upper setting light hole, the light issued from light source, a part are directly emitted from light hole, and another part projects hemispherical reflector
Spheric reflection wall on then be reflected back toward on phosphor sheet, due to phosphor sheet have scattering process, the light excited again
A part is directly emitted from light hole again, and another part projects on the spheric reflection wall of hemispherical reflector and anti-again again
It is emitted back towards on phosphor sheet, repeatedly, final light is most of other than being partly absorbed all to be exported from light hole, in this way
The brightness that light source luminescent face can be improved improves the effect of star space projection, furthermore by logical on design hemispherical reflector
The size of unthreaded hole can reduce the dispersion angle of light beam, keep the dispersion angle of the light beam of different colours as identical as possible, to make
It mixes more uniform, without using other elements such as relay lens.Light source module group by the way that different colours are arranged issues not
With the light of color, the light of different colours is homogenously mixed together by combined beam unit, and when in use, being needed according to scene can be only
The light source of one of color is opened, multiple light sources can also be opened simultaneously, mixed light is formed, a frequency can also be set,
It realizes monochromatic light and mixed light alternating projection, keeps the effect of projection more diversified, the utility model is small in size, at low cost, greatly
Projection diversity is improved greatly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one specific embodiment of the utility model polychrome starry sky projector；
Fig. 2 a-2b is the structural schematic diagram of one specific embodiment of the utility model beam splitting unit.
It is as shown in the figure: 10, polychromatic source group；110,110a-110c, light source；101, beamlet；120, hemispherical is reflective
Bowl；121, light hole；130, the first collimation lens；20, condenser lens；30, diaphragm；50, combined beam unit；510a, first are filtered
Piece；510b, the second optical filter；60, beam splitting unit；610, the plane of incidence；611, intermediate incident area；612, marginal incident region；
620, reflecting surface；621, reflecting region；630, exit facet；70, the second collimation lens.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing:
As shown in Figure 1, the utility model provides a kind of polychrome starry sky projector, it successively include polychromatic source group 10, poly-
Focus lens 20, diaphragm 30 and reflection mirror array (not shown), the polychromatic source group 10 include at least two different colours
Light source module group and the light source module group set on the different colours optical path on combined beam unit 50, combined beam unit 50 be used for will
The light that the light source module groups of different colours issues is uniformly mixed into as light beam, and each light source module group successively includes light source
110 and hemispherical reflector 120, the inner wall of the hemispherical reflector 120 is spherical reflective surface, and the light source 110 is located at institute
At the centre of sphere for stating dome-type reflector 120, the hemispherical reflector 120 is equipped with light hole 121.Preferably, light source 110 can
To be laser light source or LED light source, wherein laser light source can be laser diode and phosphor sheet, and LED light source may include
LED chip and phosphor sheet.Specifically, by setting hemispherical reflector 120, and light source 110 is placed in hemispherical reflector
At the centre of sphere of 120 reflecting surface, the phosphor sheet in light source 110 is more precisely located to the ball of hemispherical reflector 120
At the heart, there is a light hole 121 on hemispherical reflector 120, the light issued from light source 110, a part is directly from light hole 121
Outgoing, another part is projected on the spheric reflection wall of hemispherical reflector 120 and then is reflected back toward on phosphor sheet, due to glimmering
Light powder piece has scattering process, and the light a part excited again is directly emitted from light hole 121 again, and another part projects again
It is reflected back on phosphor sheet on to the spheric reflection wall of hemispherical reflector 120 and again, repeatedly, final light is in addition to portion
Divide major part except being absorbed that can all export from light hole 121, the brightness of 110 light-emitting surface of light source can be improved in this way, improves
Furthermore the effect of star space projection can control the hair of light beam by the size of the light hole 121 on design hemispherical reflector 120
Angle is dissipated, keeps the dispersion angle of the light beam of different colours as identical as possible, to make it mix more uniform, without using in
After other elements such as lens.Since the light source 110 in the light source module group of different colours issues the light of different colours, different colours
Light is homogenously mixed together by combined beam unit 50, when in use, can only open one of color according to scene needs
Light source 110, can also open simultaneously multiple light sources 110, form mixed light, can also set a frequency, realize monochromatic light and
Mixed light alternating projection keeps the effect of projection more diversified, the utility model is small in size, it is at low cost, polychrome throwing may be implemented
Shadow.It should be noted that the light hole 121 can be open region, it is also possible to not plate the region of reflectance coating.
Preferably, the corresponding centre of sphere angle of light hole 121 of the hemispherical reflector 120 is 30~90 °.The light hole
121 corresponding regions can be arbitrary shape, such as round, ellipse, and rectangle etc. is preferably circular.Define the straight of light hole 121
Diameter is the diameter that can completely include the smallest circular in region corresponding to light hole, and the diameter of the light hole 121 is relative to half
The centre of sphere shape of spherical reflector 120 in an angle, defines the centre of sphere angle that the angle is light hole 121, and which is 30~
90 °, more preferably 45 degree, to reduce the angle of divergence of light beam, it is ensured that mixing uniformity.
Preferably, the light source module group of the different colours is equipped with 2-6, is distributed in the same side or different two sides or difference
Three sides.In the present embodiment by taking the light source module group of 3 different colours as an example, respectively three kinds of light source 110a-110c of red, green, blue,
2 can be formed3The star space projection effect of -1=7 kind different colours, the wherein independent position of the corresponding light source module group of red light source 110a
In side, the corresponding light source module group of green light source 110b, the corresponding light source module group of blue-light source 110c are located at the other side, wherein two
The light path of a light source 110a, 110b are identical.Certain three light source module groups can also be located at the same side or three different sides, according to reality
Border is set, and is optimized with volume, structure, the cost etc. to starry sky projector, while issues three light sources 110
Light beam mix more uniform.It should be noted that can then form 2 if the quantity of the light source module group of different colours is nn-
The star space projection effect of a kind of different colours.
Preferably, the combined beam unit 50 wraps at least one optical filter or transflection mirror, by the light source die of the different colours
The light that group issues uniformly mixes.Specifically, in the present embodiment by taking the light source module group of 3 different colours as an example, and combined beam unit
50 use two optical filters, the first optical filter 510a and the second optical filter 510b are followed successively by along optical path, wherein the first optical filter
510a is corresponding with red light source 110a and green light source 110b, transmits reflection to red light green light, feux rouges and green light are uniformly mixed into
Red green mixed light, the second optical filter 510b is corresponding with blue-light source 110c, transmission red-green glow reflect blue light, will red green mixed light with
Blue light forms white light after evenly mixing.If certain three light source module groups are located at the same side or three different sides, optical filter or saturating
The quantity of anti-mirror and position are also required to adjust accordingly, to realize that the light beam issued to three light sources 110 is uniformly mixed,
When designing the position of light source 110 and optical filter or transflection mirror, the light beam of different colours is made to project optical filtering as far as possible certainly
Piece or position on transflection mirror and area coverage are identical, even if the light beam of different colours projects on optical filter or transflection mirror
Hot spot is overlapped as far as possible, and the gap of light path is as small as possible, to guarantee mixing uniformity.Above-mentioned expansion situation should all be included in this
In the protection scope of utility model.
Please continue to refer to Fig. 1, the hemispherical reflector 120 is additionally provided with the first collimation lens 130, institute along the rear of optical path
It is corresponding with light hole to state the first collimation lens 130.Specifically, the light beam being emitted from hemispherical reflector 120 is by the first collimation
Lens 130 project after being collimated carries out conjunction beam in combined beam unit 50, improve light beam by the first collimation lens 130 of setting
Collimation reduces the angle of divergence of light beam, keeps the collocation degree of the angle of divergence of the light beam of different colours higher, to guarantee the mixed of light beam
Close uniformity.
Preferably, beam splitting unit 60 and the second collimation lens are also successively arranged between the diaphragm 30 and reflection mirror array
70.Preferably, the beam splitting unit 60 includes a solid transparent part, and the solid transparent part includes the plane of incidence 610, reflecting surface
620 and exit facet 630, the reflecting surface 620 is total internal reflection surface, successively passes through the plane of incidence by the light beam after diaphragm 30
610 and exit facet 630 after or successively form multiple angle of propagation after the plane of incidence 610, reflecting surface 620 and exit facet 630
Different beamlets 101 is spent, the beamlet 101 projects and is incident on reflecting mirror battle array after collimation on second collimation lens 70
On column.It is focused on condenser lens 20 specifically, being projected by the light beam after combined beam unit 50, condenser lens 20 is by light beam
It focuses in the light hole of diaphragm 30, is projected on beam splitting unit 60 through the light beam of diaphragm 30 and outgoing forms multiple beamlets
101, multiple beamlet 101 projects on reflection mirror array after being collimated by the second collimation lens 70.The solid transparent part will
The light beam being emitted from diaphragm 30 is divided into multiple beamlets 101, and the propagation angle of different beamlets 101 is different, the solid transparent
Part includes the plane of incidence 610, reflecting surface 620 and exit facet 630, and the light beam that diaphragm 30 is emitted successively passes through 610 He of the plane of incidence
It is different that multiple propagation angles after exit facet 630 or are successively formed after the plane of incidence 610, reflecting surface 620 and exit facet 630
Beamlet 101 finally all project the second of rear by being emitted after the solid transparent part from the different zones of exit facet
On collimation lens 70, since the optical path of different beamlets 101 is different, after same second collimation lens 70,
Pattern not of uniform size will be formed, pattern not of uniform size can be projected out after reflecting eventually by reflection mirror array, is increased
Lighting pattern diversity, which can be integrally formed using the method for injection molding, easy to make quick, at low cost, be accounted for
With small in size, and substantially increase drop shadow effect.It should be noted that the standard for judging light beam or multi-beam is if light beam
Propagation angle be continuous, then it is assumed that be light beam, whereas if the propagation angle of light beam has interruption, then it is assumed that be multi beam
Light.
Preferably, the reflecting surface 620 is total internal reflection surface, utilizes the material of beam splitting unit 20 and the refringence of air
It realizes reflection function, realizes that simple and reflectivity is high, to reduce energy loss.It can certainly be in the outer of non-total internal reflection surface
Side be arranged one layer of reflecting layer, the reflecting layer such as the material metal or other high reflections made of, with reach total reflection or almost entirely
The effect of reflection improves the brightness of the utilization rate and projection pattern of light source 110.
Preferably, the bore of the exit facet 630 is greater than the bore of the plane of incidence 610.That is the solid transparent part is from anti-
The side for penetrating face 610 is gradually increased to the side of exit facet 630, so as to reduce light of the light beam inside solid transparent part
Journey reduces the height namely thickness of solid transparent part with this, reduces it and occupies volume and material cost, and due to solid transparent part
It is to be integrally formed by way of injection molding, and in injection moulding process, the smaller then intensity of height is higher, it is not easy to damage, improve
Its quality and service life.
As illustrated in figures 2 a-2b, the plane of incidence 610 include at least one intermediate incident area 611 and it is several be located at it is described
The marginal incident region 612 of intermediate 611 periphery of incident area, the intermediate incident area 611 and any marginal incident region 611
Non-coplanar and two neighboring edge incident area 612 is non-coplanar, projects intermediate incidence respectively by the light beam after diaphragm 30
On region 611 and marginal incident region 612, the light beam for projecting intermediate incident area 611 goes out after reflecting from exit facet 630
It penetrates, the light beam for projecting marginal incident region 612 is projected after reflecting on reflecting surface 620, from out after the reflection of reflecting surface 620
Penetrate the outgoing of face 630.
Preferably, the marginal incident region 612 is plane, and the quantity in marginal incident region 612 can be for 4-6 even
More, in Fig. 2 a-2b, the quantity in marginal incident region 612 is 6, is trapezium structure, naturally it is also possible to be other shapes sum number
Amount, herein without limitation, the normal direction in different marginal incident regions 612 is different, and reflecting surface 620 includes multiple in the present embodiment
Non-coplanar reflecting region 621, the reflecting region 621 are corresponded with marginal incident region 612, i.e., each reflecting region
A 621 corresponding marginal incident regions 612, the light beam after marginal incident region 612 reflects is using corresponding echo area
Domain 621 is reflected, to become different beamlets 101, and the direction of propagation of different beamlets 101 is significantly different, finally from out
Penetrate the different zones outgoing in face 630.
Intermediate incident area 611 is different with the optical path in marginal incident region 612, and light beam passes through different optical paths
The optical length passed through when being finally incident on the second collimation lens 70 is also different, thus intermediate incident area 611 and edge
There is the beamlet 101 of incident area 612 the different angles of divergence will be formed finally after same second collimation lens 70
Pattern not of uniform size may finally be projected out pattern not of uniform size.From the angle analysis of imaging, due to intermediate incident area
611 is different with the image path in marginal incident region 612, thus have different object distances, when being finally imaged on a projection plane
Just different size of image can be formed.
Please emphasis referring to Fig. 2 b, the intermediate incident area 611 is curved surface, the reflecting region 621 be plane or in which
One or two reflecting region 621 is curved surface, by setting curved surface for intermediate incident area 611, thus it is possible to vary by intermediate
The degree of divergence of the beamlet 101 of incident area 611, so that the son of intermediate incident area 611 and marginal incident region 612
Light beam 101 has the more obvious different angle of divergence, and the size of final projected image is made to have more obvious difference.Similarly,
Curved surface is set by one of reflecting region 621, thus it is possible to vary the beamlet 101 reflected by the reflecting region 621 of curved surface
Degree of divergence, thus make the beamlet 101 and by other reflecting regions 621 reflection beamlet 101 dissipate angular difference more
Greatly, the difference in size between projected image is further increased.
In conclusion polychrome starry sky projector provided by the utility model, successively includes polychromatic source group 10, condenser lens
20, diaphragm 30 and reflection mirror array, the polychromatic source group 10 include the light source module group of at least two different colours and are set to
Combined beam unit 50 in the optical path of the light source module group of the different colours, combined beam unit 50 are used for the light source module group of different colours
The light of sending is uniformly mixed into as light beam, and each light source module group successively includes light source 110 and hemispherical reflector
120, the inner wall of the hemispherical reflector 120 is spherical reflective surface, and the light source 110 is located at the dome-type reflector 120
The centre of sphere at, the hemispherical reflector 120 be equipped with light hole 121.By the way that hemispherical reflector 120 is arranged, and by light source
110 are placed at the centre of sphere of the reflecting surface of hemispherical reflector 120, and light hole 121 is arranged on hemispherical reflector 120, from
The light that light source 110 issues, a part are directly emitted from light hole 121, and another part projects the spherical surface of hemispherical reflector 120
It is then reflected back toward on phosphor sheet on reflecting wall, since phosphor sheet has scattering process, the light excited again is a part of
It is directly emitted from light hole 121 again, another part projects on the spheric reflection wall of hemispherical reflector 120 and anti-again again
It is emitted back towards on phosphor sheet, repeatedly, final light is most of other than being partly absorbed all to be exported from light hole 121,
The brightness that 110 light-emitting surface of light source can be improved in this way, improves the effect of star space projection, furthermore passes through design hemispherical reflector
The size of light hole 121 on 120 can reduce the dispersion angle of light beam, make the dispersion angle of the light beam of different colours as far as possible
It is identical, to make it mix more uniform, without using other elements such as relay lens.By the light source that different colours are arranged
Mould group issues the light of different colours, and the light of different colours is homogenously mixed together by combined beam unit 50, when in use, according to field
Scape needs only to open the light source 110 of one of color, can also open simultaneously multiple light sources 110, forms mixed light,
A frequency can be set, realizes monochromatic light and mixed light alternating projection, keeps the effect of projection more diversified, the utility model
It is small in size, at low cost, may be implemented polychrome projection.
Although the embodiments of the present invention is illustrated in specification, these embodiments are intended only as mentioning
Show, should not limit the protection scope of the utility model.Various omissions are carried out in the range of not departing from the utility model aims, are set
It changes and change should be included in the protection scope of the utility model.
Claims (10)
1. a kind of polychrome starry sky projector, which is characterized in that successively include polychromatic source group, condenser lens, diaphragm and reflecting mirror
Array, the polychromatic source group include the light source module group of at least two different colours and the light source die set on the different colours
Combined beam unit in the optical path of group, each light source module group successively includes light source and hemispherical reflector, and the hemispherical is anti-
The inner wall of light bowl is spherical reflective surface, and the light source is located at the centre of sphere of the hemispherical reflector, the hemispherical reflector
It is equipped with light hole.
2. polychrome starry sky projector according to claim 1, which is characterized in that the light hole pair of the hemispherical reflector
The centre of sphere angle answered is 30~90 °.
3. polychrome starry sky projector according to claim 1, which is characterized in that the light source module group of the different colours is equipped with
2-6, it is distributed in the same side or different two sides or three different sides.
4. polychrome starry sky projector according to claim 3, which is characterized in that at least one optical filtering of the combined beam unit packet
Piece or transflection mirror uniformly mix the light that the light source module group of the different colours issues.
5. polychrome starry sky projector according to claim 1, which is characterized in that the hemispherical reflector is after optical path
Side is additionally provided with the first collimation lens, and first collimation lens is corresponding with light hole.
6. polychrome starry sky projector according to claim 1, which is characterized in that the light source is laser light source or LED light
Source.
7. polychrome starry sky projector according to claim 1, which is characterized in that between the diaphragm and reflection mirror array also
It is successively arranged beam splitting unit and the second collimation lens.
8. polychrome starry sky projector according to claim 7, which is characterized in that the beam splitting unit includes a solid transparent
Part, the solid transparent part include the plane of incidence, reflecting surface and exit facet, and the reflecting surface is total internal reflection surface, after diaphragm
Light beam successively after the plane of incidence and exit facet or successively formed after the plane of incidence, reflecting surface and exit facet it is more
The different beamlet of a propagation angle, the beamlet project and are incident on reflecting mirror battle array after collimation on second collimation lens
On column.
9. polychrome starry sky projector according to claim 8, which is characterized in that the plane of incidence includes among at least one
Incident area and several marginal incident regions positioned at the intermediate incident area periphery, the intermediate incident area and any side
Edge incident area is non-coplanar and two neighboring edge incident area is non-coplanar, projects centre respectively by the light beam after diaphragm
On incident area and marginal incident region, the light beam of intermediate incident area is projected after reflecting from exit face, is projected
The light beam in marginal incident region projects on reflecting surface after reflecting, from exit face after reflective surface.
10. polychrome starry sky projector according to claim 8, which is characterized in that the marginal incident region is plane, institute
Stating reflecting surface includes multiple non-coplanar reflecting regions, and the reflecting region and marginal incident region correspond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821254557.8U CN208546842U (en) | 2018-08-03 | 2018-08-03 | A kind of polychrome starry sky projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821254557.8U CN208546842U (en) | 2018-08-03 | 2018-08-03 | A kind of polychrome starry sky projector |
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| CN208546842U true CN208546842U (en) | 2019-02-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758453A (en) * | 2018-08-03 | 2018-11-06 | 佛山市南海区协隆电器有限公司 | A kind of polychrome starry sky projector |
| CN113357574A (en) * | 2021-06-30 | 2021-09-07 | 生迪智慧科技有限公司 | Starry sky projecting lamp |
-
2018
- 2018-08-03 CN CN201821254557.8U patent/CN208546842U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758453A (en) * | 2018-08-03 | 2018-11-06 | 佛山市南海区协隆电器有限公司 | A kind of polychrome starry sky projector |
| CN113357574A (en) * | 2021-06-30 | 2021-09-07 | 生迪智慧科技有限公司 | Starry sky projecting lamp |
| CN113357574B (en) * | 2021-06-30 | 2023-06-27 | 生迪智慧科技有限公司 | Star projecting lamp |
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