CN208546841U - A kind of small size starry sky projector - Google Patents
A kind of small size starry sky projector Download PDFInfo
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- CN208546841U CN208546841U CN201821249037.8U CN201821249037U CN208546841U CN 208546841 U CN208546841 U CN 208546841U CN 201821249037 U CN201821249037 U CN 201821249037U CN 208546841 U CN208546841 U CN 208546841U
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Abstract
The utility model discloses a kind of small size starry sky projectors, it successively include light source, beam splitting unit, collimation lens and reflection mirror array along optical path, beam splitting unit includes a solid transparent part, solid transparent part includes the plane of incidence, reflecting surface and exit facet, the light beam of light source outgoing successively by the plane of incidence with the different beamlet of multiple propagation angles after exit facet or is successively formed after the plane of incidence, reflecting surface and exit facet, be incident on reflection mirror array after collimated collimated.By the way that solid transparent part is arranged at light source rear, the light that light source is emitted is divided into multiple beamlets, and the propagation angle of different beamlets is different, i.e., the optical path of different beamlets is different, after the same collimation lens, pattern not of uniform size will be formed, pattern not of uniform size can be projected out after reflecting eventually by reflection mirror array, which can be integrally formed using the method for injection molding, it is easy to make quick, at low cost, occupancy is small in size, and substantially increases drop shadow effect.
Description
Technical field
The utility model relates to lighting technical fields, and in particular to a kind of small size 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.
Existing starry sky projector generallys use the decorative effect that reflection mirror array is projected out babysbreath, in reflection mirror array
The quantity of small reflector determines the quantity (the corresponding projection pattern of each small reflector) for the pattern being projected out.Due to each
The reflecting surface size of small reflector determines its reflectible light energy, in order to keep the pattern of projection bright enough, existing Lawn lamp
On each small reflector size usually will not be too small in the reflection mirror array that uses, so then will lead to small in reflection mirror array
The quantity of reflecting mirror is insufficient, to keep the number of patterns being projected out limited.Although the overall dimensions for increasing reflection mirror array can
To increase the quantity of mirror unit, but this can undoubtedly make all proportional increase of the volume of the entire decorum, to reduce use
Convenient degree improves cost of manufacture.
Utility model content
The utility model for the technical problems in the prior art, provides a kind of small in size, easy to make, cost
Starry sky projector low, effect is good.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is: a kind of small size starry sky projector, along light
Road successively includes light source, beam splitting unit, collimation lens and reflection mirror array, and the beam splitting unit includes a solid transparent part, institute
Stating solid transparent part includes the plane of incidence, reflecting surface and exit facet, and the reflecting surface is total internal reflection surface, the light of the light source outgoing
Shu Yici forms multiple biographies after the plane of incidence and exit facet or successively after the plane of incidence, reflecting surface and exit facet
The different beamlet of angle is broadcast, the beamlet is projected and is incident on reflection mirror array after collimation on the collimation lens.
Further, the plane of incidence includes multiple discontinuous incident areas, is not total between two neighboring incident area
The light beam in face, the light source outgoing forms the different beamlet of multiple propagation angles after multiple incident area refractions,
Multiple beamlets project on collimation lens after exit face respectively.
Further, the reflecting surface is equipped with multiple discontinuous reflecting regions, and two neighboring reflecting region is non-coplanar, institute
The light beam for stating light source outgoing projects on multiple reflecting regions after plane of incidence refraction, and it is different to form multiple propagation angles
Beamlet.
Further, the plane of incidence includes multiple discontinuous incident areas, the multiple discontinuous incident area
A concave surface is formed, and the incident area and reflecting region correspond.
Further, the exit facet includes multiple discontinuous exit areas, and two neighboring exit area is non-coplanar, institute
The light beam for stating light source outgoing is projected after the plane of incidence and reflecting surface on multiple exit areas, is rolled over through the exit area
The different beamlet of multiple propagation angles is formed after penetrating.
Further, the incident area or reflecting region or exit area are at least provided with 3.
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
Penetrate that region is non-coplanar, the light beam that the light source issues is projected respectively on intermediate incident area and marginal incident region, is projected
From exit face after reflecting, the light beam for projecting marginal incident region projects the light beam of intermediate incident area after reflecting
On reflecting surface, 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.
Further, the intermediate incident area is curved surface, and the reflecting region is plane or in which one or 2 reflection
Region is curved surface.
Further, the bore of the exit facet is greater than the bore of the plane of incidence.
Small size starry sky projector provided by the utility model successively includes light source, beam splitting unit, collimation lens along optical path
And reflection mirror array, the beam splitting unit include a solid transparent part, the solid transparent part includes the plane of incidence, reflecting surface and goes out
Face is penetrated, the light beam of the light source outgoing successively passes through the plane of incidence, reflection after the plane of incidence and reflecting surface or successively
The different beamlet of multiple propagation angles is formed behind face and exit facet, the beamlet projects on the collimation lens after collimation
It is incident on reflection mirror array.By the way that beam splitting unit is arranged at light source rear, which includes a solid transparent part, the reality
The light that light source is emitted is divided into multiple beamlets by body Transparent Parts, and the propagation angle of different beamlets is different, the solid transparent part
Including the plane of incidence, reflecting surface and exit facet, the light beam of light source outgoing is successively passed through after the plane of incidence and exit facet or successively
Form the different beamlet of multiple propagation angles after crossing the plane of incidence, reflecting surface and exit facet, by the solid transparent part it
It is emitted afterwards from the different zones of exit facet, on the collimation lens for finally all projecting rear, the optics road of so different beamlets
Diameter is different, therefore after the same collimation lens, pattern not of uniform size will be formed, after reflecting eventually by reflection mirror array
It can be projected out pattern not of uniform size, increase lighting pattern diversity, which can be using the method for injection molding
It is integrally formed, easy to make quick, at low cost, occupancy is small in size, and substantially increases drop shadow effect.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model small size starry sky projector；
Fig. 2 is the structural schematic diagram of the plane of incidence and incident area in the utility model embodiment 1；
Fig. 3 a-3b is a kind of structural schematic diagram of beam splitting unit in the utility model embodiment 2；
Fig. 4 is the structural schematic diagram of another beam splitting unit in the utility model embodiment 2；
Fig. 5 is exit facet and the structural schematic diagram of exit area in the utility model embodiment 3；
Fig. 6 a-6b is the structural schematic diagram of beam splitting unit in the utility model embodiment 4.
It is as shown in the figure: 10, light source；101,101a-101c, beamlet；20, beam splitting unit；210, the plane of incidence；2101, enter
Penetrate region；2102, intermediate incident area；2103, marginal incident region；220, reflecting surface；2201, reflecting region；230, it is emitted
Face；2301, exit area；30, collimation lens；40, reflection mirror array.
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 small size starry sky projector, successively include along optical path light source 10,
Beam splitting unit 20, collimation lens 30 and reflection mirror array 40, the beam splitting unit 20 include a solid transparent part, and the entity is saturating
Bright part includes the plane of incidence 210, reflecting surface 220 and exit facet 230, and the light beam that the light source 10 is emitted successively passes through the plane of incidence
210 and exit facet 230 after or successively form multiple angle of propagation after the plane of incidence 210, reflecting surface 220 and exit facet 230
Different beamlets 101 is spent, the beamlet 101 projects and is incident on reflection mirror array 40 after collimation on the collimation lens 30
On.Specifically, beam splitting unit 20 is arranged at 10 rear of light source, which includes a solid transparent part, the solid transparent
The light that light source 10 is emitted is divided into multiple beamlets 101 by part, and 3 beamlets 101 are only shown in Fig. 1 (may not in practical application
Only 3 beam), respectively 101a, 101b, 101c, and the propagation angle of different beamlets 101 is different, the solid transparent part include into
Face 210, reflecting surface 220 and exit facet 230 are penetrated, the light beam that light source 10 is emitted successively passes through the plane of incidence 210 and exit facet 230
The different beamlet of multiple propagation angles is formed after the plane of incidence 210, reflecting surface 220 and exit facet 230 afterwards or successively
101, by being emitted after the solid transparent part from the different zones of exit facet, finally all project the collimation lens 30 at rear
On, the optical path of so difference beamlet 101 is different, therefore after the same collimation lens 30, will be formed not of uniform size
Pattern, eventually by reflection mirror array 40 reflect after outgoing can be projected out pattern not of uniform size, increase lighting pattern
Diversity, which can be integrally formed using the method for injection molding, easy to make quick, and at low cost, occupancy is small in size,
And substantially increase drop shadow effect.It should be noted that the standard for judging light beam or multi-beam is the angle of propagation if light beam
Degree is continuous, then it is assumed that is light beam, whereas if the propagation angle of light beam has interruption, then it is assumed that be multi-beam.
Preferably, the reflecting surface 220 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 10.
As shown in Figure 1, the reflection mirror array 40 includes multiple small reflectors 410, the multiple small reflector 410 can
With regularly arranged, a common reflecting surface, the reflection can also be formed with disordered arrangements, the reflecting surface of all small reflectors 410
Face is preferably curved surface, and the curved surface can be concave surface, is also possible to convex surface, by by small reflector array arrangement at curved surface, can
So that the pattern that all small reflectors project away scatter, the curvature of Control curve can control the big of pattern dispersion range
It is small.Such as a large stretch of reflecting mirror can be cut into the small reflector array of 4mm, then be pasted on a curved surface member, so
Camber reflection lens array can be formed.The driving mechanism connecting with the reflection mirror array 40 can also be set, driven described anti-
The rotation of lens array 40 is penetrated, to change the exit direction of light, to form dynamic projection effect.Certainly it can also be multiple small anti-
It penetrates the arrangement of mirror 410 and forms a rotary-type camber reflection body, and a central axes company with the rotary-type camber reflection body is set
The driving mechanism connect, the driving mechanism drive the rotary-type camber reflection body to rotate relative to the central axes, due to rotation
Type camber reflection body rotates under the drive of driving mechanism relative to central axes, therefore dynamic star space projection effect may be implemented,
Such as the effect that snowflake lands or drifts about, increases atmosphere activity, improve appreciation effect.
Preferably, the bore of the exit facet 230 is greater than the bore of the plane of incidence 210.That is the solid transparent part is from anti-
The side for penetrating face 210 is gradually increased to the side of exit facet 230, so as to reduce light of the light beam inside solid transparent part
Journey reduces the height of solid transparent part with this, reduces it and occupies volume and material cost, and since solid transparent part is to pass through note
The mode of modeling is integrally formed, and in injection moulding process, and the smaller then intensity of height is higher, it is not easy to damage, improve its quality and
Service life.
Embodiment 1
As shown in Fig. 2, the plane of incidence 210 includes multiple discontinuous incident areas 2101, two neighboring incident area
Non-coplanar between 2101, the light beam that the light source 10 is emitted forms multiple propagation angles after the refraction of multiple incident areas 2101
Different beamlets 101, multiple beamlets 101 project on collimation lens 30 after the outgoing of exit facet 230 respectively.Specifically,
The plane of incidence 210 divides for multiple incident areas 2101, and has apparent boundary between adjacent incident area 2101, i.e., two neighboring
It is non-coplanar between incident area 2101, so that the light beam for being incident on different incident areas 2101 be made to become discrete multiple sub-lights
Beam 101, the corresponding beamlet 101 of each incident area 2101, beamlet 101 can be emitted after the reflection of reflecting surface 220
It can also be directly emitted from exit facet 230；Preferably, incident area 2101 at least there are three, can be even more for 3-6,
Quantity is more, and beamlet 101 is also more, and the quantity for the pattern being projected out is more, and in Fig. 2, the plane of incidence 210 is hexagon, enters
Penetrating region 2101 is 6, and different incident areas 2101 are plane, and the normal direction of Different Plane is different, i.e., the plane of incidence exists
It is substantially polyhedral structure, the light for being incident on the plane of incidence 210 from light source 10 can reflect, due to different on the plane of incidence 210
The normal direction of incident area 2101 is different, thus different by the propagation angle of the light after the refraction of different incident areas 2101,
To which light beam is divided into multiple beamlets 101, and the quantity of incident area 2101 is more, and the quantity of beamlet 101 is also more.When
The right plane of incidence 210 and each incident area 2101 are also possible to other shapes, and the quantity of incident area 2101 can also root
It is designed according to actual needs, herein with no restrictions.
Embodiment 2
In the present embodiment, the reflecting surface 220 of the beam splitting unit 20 is equipped with multiple discontinuous reflecting regions 2201, phase
Adjacent two reflecting regions 2201 are non-coplanar, and the light beam being emitted from light source 10 projects multiple after the plane of incidence 210 refraction
On reflecting region 2201, the different beamlet 101 of multiple propagation angles is formed.Preferably, the plane of incidence 210 include it is multiple not
Continuous incident area 2101, the multiple discontinuous incident area 2101 form a concave structure, and and reflecting region
2201 correspond.Specifically, the reflecting surface 220 is the side of solid transparent part, it is anti-in the present embodiment for the reflected beams
Penetrate face 220 include multiple discrete reflecting regions 2201, as shown in Figure 3 a-3b, incident area 2101 be equipped with it is multiple, and with it is anti-
The one-to-one correspondence of region 2201 is penetrated, several incident areas 2101 form a concave surface, and light beam projects each incident area 2101
On be divided into several beamlets, each beamlet 101 is reflected through incident area 2101 to the side far from central optical axis, is then projected
Onto corresponding reflecting region 2201, since beamlet 101 is reflected far from the side of central optical axis, beamlet can be made
It better disperses out between 101, increases to improve the distance between hot spot for making to project away, further increase projection effect
Fruit.Can also be without apparent line of demarcation between certain above-mentioned incident area 2101, to form a concave curved surface, light is passed through
The different location crossed in the concave curved surface is simultaneously refracted to different reflections in different directions and to the side far from central optical axis
On region 2201.Certain incident area 2101 is also possible to a plane, as long as shown in figure 4, can be light to far from center
The side of optical axis is refracted on multiple reflecting regions 2201, is quadrangle, wherein having one there are four reflecting region 2201 is set
It is a to be not shown, and there is apparent boundary between adjacent reflective regions 2201, i.e., two neighboring reflecting region 2201 is non-coplanar, from
And the light beam for being incident on different reflectings surface 220 is made to become discrete multiple beamlets 101, each reflecting region 2201 corresponding one
A beamlet 101；Preferably, the quantity of reflecting region 2201 at least there are three, can be even more for 3-6, different is anti-
Penetrating region 2201 is plane, and the normal direction of Different Plane is different, i.e., side is inherently multi-panel body side surface；From light source 10
The light of outgoing first passes through the refraction of the plane of incidence 220, is then incident on reflecting surface 220 and is accordingly totally internally reflected, due to reflecting surface 220
The normal direction of upper difference reflecting region 2201 is different, thus by the propagation angle of the light after the reflection of different reflecting regions 2201
Difference, so that light beam is divided into multiple beamlets 101, and the quantity of reflecting region 2201 is more, the quantity of beamlet 101 is also got over
It is more.Certain reflecting surface 220 is also possible to other shapes, and the number and shape of reflecting region 2201 can also be according to actual needs
Design, herein with no restrictions.Above-mentioned central optical axis refers to the optical axis for the light beam that light source 10 issues, rather than the light of beamlet 101
Axis.
Embodiment 3
Preferably, the exit facet 230 includes multiple discontinuous multiple exit areas 2301, two neighboring exit area
2301 is non-coplanar, and the light beam that the light source 10 is emitted projects multiple outgoing areas after the plane of incidence 210 and reflecting surface 220
On domain 2301, the different beamlet 101 of multiple propagation angles is formed after the refraction of the exit area 2301.Specifically, outgoing
Face 230 is divided for multiple exit areas 2301, has apparent boundary, i.e., two neighboring outgoing area between adjacent exit area 2301
Domain 2301 is non-coplanar, to make the light beam for being incident on different exit areas 2301 become discrete multiple beamlets 101, each
Exit area 2301 corresponds to a beamlet 101；Preferably, the quantity of exit area 2301 at least 3 can be 3-6
It is even more, as shown in figure 5, exit facet 230 be it is trapezoidal, it is triangle that exit area 2301, which is equipped with 5, and different outgoing
Region 2301 is plane, and the normal direction of Different Plane is different, i.e., exit facet 230 is inherently polyhedral structure, from outgoing
The light that face 230 is emitted can reflect, since the normal direction of exit areas 2301 different on exit facet 230 is different, thus
It is different by the propagation angle of the light after the refraction of different exit areas 2301, so that light beam is divided into multiple beamlets 101, and go out
The quantity for penetrating region 2301 is more, and the quantity of beamlet 101 is also more.It should be noted that in the embodiment, the plane of incidence 210
It may include an incident area 2101, also may include multiple non-coplanar incident areas 2101, reflecting surface 220 may include
One reflecting region 2201 also may include multiple non-coplanar reflecting regions 2201, as long as by the plane of incidence 210 and the plane of incidence
Light after 220 can project the different exit areas 2301 on exit facet 230 and form multiple beamlets 101.When
Right exit facet 230 is also possible to other shapes, and the number and shape of exit area 2301 can also design according to actual needs,
Herein with no restrictions.
Embodiment 4
As shown in Fig. 6 a-6b, the plane of incidence 210 include at least one intermediate incident area 2102 and it is several be located at it is described
The marginal incident region 2103 of intermediate 2102 periphery of incident area, the intermediate incident area 2102 and any marginal incident region
2103 non-coplanar and two neighboring edge incident areas 2103 are non-coplanar, during the light beam that the light source 10 issues projects respectively
Between on incident area 2102 and marginal incident region 2103, project the light beam of intermediate incident area 2102 after reflecting from outgoing
Face 230 is emitted, and the light beam for projecting marginal incident region 2103 is projected after reflecting on reflecting surface 220, anti-through reflecting surface 220
It is emitted after penetrating from exit facet 230.Specifically, the light beam for being incident on intermediate incident area 2102 only reflects, then from outgoing
Face 230 is emitted；It is incident on the light beam in marginal incident region 2103, the refraction of the plane of incidence 210 is first passed through, then passes through reflecting surface 220
Total internal reflection is finally emitted from exit facet 230.
Preferably, the marginal incident region 2103 is plane, and the quantity in marginal incident region 2103 can be for 4-6 very
To more, it is trapezium structure, naturally it is also possible to be other shapes that in Fig. 6 a-6b, the quantity in marginal incident region 2103, which is 6,
And quantity, herein without limitation, the normal direction in different marginal incident regions 2103 is different, and reflecting surface 220 wraps in the present embodiment
Multiple non-coplanar reflecting regions 2201 are included, the reflecting region 2201 is corresponded with marginal incident region 2103, i.e., each
Reflecting region 2201 corresponds to a marginal incident region 2103, and the light beam after marginal incident region 2103 reflects is using right
The reflecting region 2201 answered is reflected, to become different beamlets 101, and the direction of propagation of different beamlets 101 is obviously not
Together, it is finally emitted from the different zones of exit facet 230.
Intermediate incident area 2102 is different with the optical path in marginal incident region 2103, and light beam passes through different optics roads
The optical length that diameter is passed through when being finally incident on collimation lens 30 is also different, thus intermediate incident area 2102 and edge enter
There is the beamlet 101 for penetrating region 2103 the different angles of divergence will form size not finally after the same collimation lens 30
One pattern may finally be projected out pattern not of uniform size.From the angle analysis of imaging, due to intermediate 2102 He of incident area
The image path in marginal incident region 2103 is different, thus has different object distances, just can when being finally imaged on a projection plane
Form different size of image.
Please emphasis referring to Fig. 6 b, the intermediate incident area 2102 is curved surface, the reflecting region 2201 be plane or its
One or both of reflecting region 2201 be curved surface, by setting curved surface for intermediate incident area 2102, thus it is possible to vary pass through
The degree of divergence of the beamlet 101 of intermediate incident area 2102, so that intermediate incident area 2102 and marginal incident region
2103 beamlet 101 has the more obvious different angle of divergence, and the size of final projected image is made to have more obvious area
Not.Similarly, curved surface is set by one of reflecting region 2201, thus it is possible to vary reflect by the reflecting region 2201 of curved surface
The degree of divergence of beamlet 101, so that the beamlet 101 and the beamlet 101 by the reflection of other reflecting regions 2201 be made to send out
Scattered angular difference is bigger, further increases the difference in size between projected image.
In conclusion small size starry sky projector provided by the utility model, successively includes light source 10, beam splitting list along optical path
Member 20, collimation lens 30 and reflection mirror array 40, the beam splitting unit 20 include a solid transparent part, the solid transparent part packet
The plane of incidence 210, reflecting surface 220 and exit facet 230 are included, the light beam that the light source 10 is emitted successively passes through 210 He of the plane of incidence
It is different that multiple propagation angles after exit facet 230 or are successively formed after 210 plane of incidence, reflecting surface 220 and exit facet 230
Beamlet 101, the beamlet 101 project on the collimation lens 30 collimate after be incident on reflection mirror array 40.It is logical
It crosses and beam splitting unit 20 is set at 10 rear of light source, which includes a solid transparent part, and the solid transparent part is by light source
The light of 10 outgoing are divided into multiple beamlets 101, and the propagation angle of different beamlets 101 is different, the solid transparent part include into
Face 210, reflecting surface 220 and exit facet 230 are penetrated, the light beam that light source 10 is emitted successively passes through the plane of incidence 210 and exit facet 230
The different beamlet of multiple propagation angles is formed after the plane of incidence 210, reflecting surface 220 and exit facet 230 afterwards or successively
101, by being emitted after the solid transparent part from the different zones of exit facet, finally all project the collimation lens 30 at rear
On, the optical path of so difference beamlet 101 is different, therefore after the same collimation lens 30, will be formed not of uniform size
Pattern, eventually by reflection mirror array 40 reflect after outgoing can be projected out pattern not of uniform size, increase lighting pattern
Diversity, which can be integrally formed using the method for injection molding, easy to make quick, and at low cost, occupancy is small in size,
And substantially increase drop shadow effect.
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 (12)
1. a kind of small size starry sky projector, which is characterized in that along optical path successively include light source, beam splitting unit, collimation lens and
Reflection mirror array, the beam splitting unit include a solid transparent part, and the solid transparent part includes the plane of incidence, reflecting surface and outgoing
Face, the reflecting surface are total internal reflection surface, the light beam of light source outgoing successively after the plane of incidence and exit facet or according to
It is secondary that the different beamlet of multiple propagation angles, the beamlet projection are formed after the plane of incidence, reflecting surface and exit facet
It is incident on reflection mirror array after being collimated on to the collimation lens.
2. small size starry sky projector according to claim 1, which is characterized in that the plane of incidence includes multiple discontinuous
Incident area, non-coplanar between two neighboring incident area, the light beam of the light source outgoing passes through multiple incident areas
The different beamlet of multiple propagation angles is formed after refraction, multiple beamlets project collimation lens after exit face respectively
On.
3. small size starry sky projector according to claim 1, which is characterized in that the reflecting surface is equipped with multiple discontinuous
Reflecting region, two neighboring reflecting region is non-coplanar, and the light beam of light source outgoing projects after plane of incidence refraction
Onto multiple reflecting regions, the different beamlet of multiple propagation angles is formed.
4. small size starry sky projector according to claim 3, which is characterized in that the plane of incidence includes multiple discontinuous
Incident area, the multiple discontinuous incident area forms a concave surface, and the incident area and reflecting region are one by one
It is corresponding.
5. small size starry sky projector according to claim 1, which is characterized in that the exit facet includes multiple discontinuous
Exit area, two neighboring exit area is non-coplanar, and the light beam of light source outgoing is after the plane of incidence and reflecting surface
It projects on multiple exit areas, forms the different beamlet of multiple propagation angles after the refraction of the exit area.
6. small size starry sky projector according to claim 2, which is characterized in that the incident area is at least provided with 3.
7. small size starry sky projector according to claim 3, which is characterized in that the reflecting region is at least provided with 3.
8. small size starry sky projector according to claim 5, which is characterized in that the exit area is at least provided with 3.
9. small size starry sky projector according to claim 1, which is characterized in that the plane of incidence includes at least one
Between incident area and several marginal incident regions positioned at the intermediate incident area periphery, the intermediate incident area and any
Marginal incident region is non-coplanar and two neighboring edge incident area is non-coplanar, and the light beam that the light source issues projects respectively
On intermediate incident area and marginal incident region, the light beam of intermediate incident area is projected after reflecting from exit face, is thrown
The light beam for being mapped to marginal incident region projects on reflecting surface after reflecting, from exit face after reflective surface.
10. small size starry sky projector according to claim 9, which is characterized in that the marginal incident region is plane,
The reflecting surface includes multiple non-coplanar reflecting regions, and the reflecting region and marginal incident region correspond.
11. small size starry sky projector according to claim 10, which is characterized in that the intermediate incident area is song
Face, the reflecting region is plane or in which one or 2 reflecting regions are curved surface.
12. small size starry sky projector according to claim 1, which is characterized in that the bore of the exit facet is greater than institute
State the bore of the plane of incidence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821249037.8U CN208546841U (en) | 2018-08-03 | 2018-08-03 | A kind of small size starry sky projector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821249037.8U CN208546841U (en) | 2018-08-03 | 2018-08-03 | A kind of small size starry sky projector |
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| Publication Number | Publication Date |
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| CN208546841U true CN208546841U (en) | 2019-02-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826121A (en) * | 2018-08-03 | 2018-11-16 | 佛山市南海区协隆电器有限公司 | A kind of small size starry sky projector |
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2018
- 2018-08-03 CN CN201821249037.8U patent/CN208546841U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108826121A (en) * | 2018-08-03 | 2018-11-16 | 佛山市南海区协隆电器有限公司 | A kind of small size starry sky projector |
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