CN216817163U - Projection device and projection system - Google Patents

Abstract

The present application relates to a projection device and a projection system. The projection device includes: a first light source emitting a first light beam; a diffraction part on which a first predetermined pattern is provided, the diffraction part diffracting at least a part of the first light beam emitted from the first light source to form a first pattern corresponding to the first predetermined pattern; and a reflection part provided with one or more second predetermined patterns thereon, the reflection part reflecting the second light beam incident thereon to form a second pattern corresponding to the one or more predetermined patterns, wherein one or both of the first pattern and the second pattern are superposed to form a projection pattern.

Description

Projection device and projection system

Technical Field

The present application relates to the field of projection. In particular, the present application relates to projection devices and projection systems.

Background

The projection device commonly used at present is provided with an atmosphere lamp, and the atmosphere lamp can provide perfect choices for places such as theme parks, hotels, furniture, exhibitions, artistic lighting and the like, and creates a required atmosphere for the life of people.

A projection device is disclosed in prior art US8057045B2, of which fig. 1 shows a block circuit diagram.

As shown in fig. 1, in this projection device 10, a full wave bridge ballast and filter circuit 24 rectifies and filters an alternating current INPUT (AC INPUT) to obtain a desired direct current output (DC) which is fed to an LED regulator 28, a laser diode power supply 30 and a motor current control 26. The light beams from the LEDs 18 pass through the inner lens 32 and the rotating interference filter wheel 12 and are ultimately collected and redirected by the outer converging lens 34 to produce a cloud-like effect. The motor 20 is used to rotate the interference filter wheel 12. The beam from the laser 16 passes through the diffractive optical element 36, and the light diffracted from the diffractive optical element 36 passes through the rotating grating wheel 14 to produce a spot, which looks like a star, due to interference of the diffracted beams. Motor 22 is used to rotate grating wheel 14. The stars are layered on the cloud-like pattern, forming a starry sky atmosphere.

However, in the above-described prior art, the star/cloud effect is given by the transmission of light emitted from the light source through the interference filter wheel 12 and other additional components, which causes the occurrence of dispersion problems, making the image finally presented less clear. In addition, with the projection device in the prior art, only one starry sky atmosphere can be formed, and the requirement for switching different atmospheres (different projection patterns) cannot be met.

In view of the above, a projection device and a projection system capable of avoiding the problem of chromatic dispersion, making the final presented image sufficiently clear, and capable of switching between different projection patterns are desired.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a projection device and a projection system, which at least solve the problems of dispersion and incapability of switching between different projection patterns in the existing projection equipment.

According to an aspect of an embodiment of the present application, there is provided a projection apparatus including: a first light source emitting a first light beam; a diffraction part on which a first predetermined pattern is provided, the diffraction part being capable of diffracting at least a part of the first light beam emitted from the first light source to form a first pattern corresponding to the first predetermined pattern; and a reflection part provided with one or more second predetermined patterns thereon, the reflection part being capable of reflecting the second light beam incident thereon to form a second pattern corresponding to the one or more second predetermined patterns, wherein one or both of the first pattern and the second pattern are superimposed to form a projection pattern.

In this way, the second pattern is formed by reflecting the light beam by the reflection portion on which the one or more second predetermined patterns are provided, the dispersion problem of the light beam occurring when the light beam is transmitted through the optical member is avoided, thereby making the formed projection pattern clearer.

In an exemplary embodiment of the projection device, the projection device further comprises: a beam splitter disposed between the first light source and the reflection part, configured to split the first light beam emitted from the first light source into a first sub-light beam and a second sub-light beam incident to the diffraction part, wherein the diffraction part diffracts the second sub-light beam to form a first pattern corresponding to the first predetermined pattern; and the beam expander is arranged between the beam splitter and the reflection part and is configured to expand the first sub-beams to form second beams.

In this way, the beam splitter is used for splitting the first light beam emitted from the first light source, and the beam expander is used for expanding partial sub-light beams formed by splitting the first light beam to form the second light beam reflected by the reflecting part, so that the number of the arranged light sources is reduced, the light beams used by the diffraction part and the reflecting part of the projection device are more uniform, and the quality of the projection pattern is improved.

In an exemplary embodiment of the projection device, the projection device further comprises: and a second light source emitting a second light beam.

In this way, a second light source, which is the same as or different from the first light source, can be additionally provided for the reflection section as needed, providing a greater degree of freedom for the device design.

In an exemplary embodiment of the projection device, the second light source is a coherent light source and the one or more second predetermined patterns are holographic patterns.

In this way, illuminating the holographic pattern with a coherent light source will make the resulting projected pattern more clear and vivid in three dimensions.

In an exemplary embodiment of the projection device, the second light source is an incoherent light source, and the one or more second predetermined patterns are patterns formed by aluminizing on the substrate.

In this way, another arrangement of the second light source and the second predetermined pattern is provided.

In an exemplary embodiment of the projection device, the first light source is a coherent light source and the one or more second predetermined patterns are holographic patterns.

In this way, illuminating the holographic pattern with a coherent light source will make the resulting projected pattern more clear and vivid in three dimensions.

In an exemplary embodiment of the projection device, the coherent light source is a laser.

In this way, a particular form of coherent light source is provided.

In an exemplary embodiment of the projection device, the diffractive part comprises a diffractive optical element.

In this manner, a specific form of the diffraction portion is provided. The use of a coherent light source to diffract the diffractive optical element further avoids dispersion problems in the projection device.

In an exemplary embodiment of the projection device, the projection device further comprises: a first motor connected to the reflection part and configured to drive the reflection part to rotate such that the second pattern rotates with the rotation of the reflection part.

In this way, by rotating the reflection part by the motor, different predetermined patterns on the reflection part can be irradiated by the second light beam, so that different second patterns are generated, and finally the formed projection patterns have diversity or animation effect.

In an exemplary embodiment of the projection device, the projection device further comprises: a second motor connected to the diffraction unit and configured to drive the diffraction unit to rotate.

In this way, by rotating the diffraction part by the motor, the movement of the first pattern can be controlled so that the finally formed projection pattern is more vivid.

In an exemplary embodiment of the projection device, the projection device further comprises: a projection lens configured to diverge the second light beam reflected from the reflection part to form a second pattern.

In this way, the second pattern can be formed into a size suitable for its application scene by the projection lens.

In an exemplary embodiment of the projection device, the projection device further comprises: and a shutter disposed between the first light source and the diffraction section, and configured to cause at least a portion of the first light beam emitted from the first light source to be incident on the diffraction section at predetermined time intervals.

In this way, by causing at least a part of the first light beam to be incident on the diffraction section at predetermined time intervals by the shutter, an effect such as starlight flickering can be produced without frequently turning on/off the first light source.

According to another aspect of the embodiments of the present application, there is provided a projection apparatus including: a first light source emitting a first light beam; a diffraction section on which a first predetermined pattern is provided, the diffraction section diffracting at least a part of the first light beam emitted from the first light source to form a first pattern corresponding to the first predetermined pattern; a reflection part having a self-luminous dot matrix including a plurality of self-luminous points; and a controller configured to control the self-luminous dots in the self-luminous dot matrix to form one or more second predetermined patterns, the second patterns corresponding to the one or more second predetermined patterns being formed by self-luminescence of the self-luminous dots forming the one or more second predetermined patterns, wherein one or both of the first patterns and the second patterns are superimposed to form a projection pattern.

In this way, since the reflection part is the self-luminous part, a light source is not required to be additionally arranged, so that the structure of the projection device is simplified, and the dispersion problem in the projection process is avoided. Furthermore, by controlling the self-luminous point in the reflection portion, different predetermined patterns can be formed, further improving the diversity and flexibility of the finally formed projection pattern.

In an exemplary embodiment of the projection device, the first light source is a coherent light source.

In this way, the diffraction section is diffracted by the coherent light source, further avoiding dispersion problems in the projection device.

In an exemplary embodiment of the projection device, the coherent light source is a laser.

In this way, a particular form of coherent light source is provided.

In an exemplary embodiment of the projection device, the diffractive part comprises a diffractive optical element.

In this manner, a specific form of the diffraction portion is provided. The use of a coherent light source to diffract the diffractive optical element further avoids dispersion problems in the projection device.

In an exemplary embodiment of the projection device, the projection device further comprises: a first motor connected to the reflection part and configured to drive the reflection part to rotate such that the second pattern rotates with the rotation of the reflection part.

In this way, the reflection part is rotated by the motor, so that the finally formed projection pattern can have a rotating animation effect.

In an exemplary embodiment of the projection device, the projection device further comprises: a second motor connected to the diffraction unit and configured to drive the diffraction unit to rotate.

In this way, by rotating the diffraction part by the motor, the movement of the first pattern can be controlled so that the finally formed projection pattern is more vivid.

In an exemplary embodiment of the projection device, the projection device further comprises: a projection lens configured to diverge the light beams emitted from the light emitting points of the reflection part forming one or more second predetermined patterns to form a second pattern.

In this way, the second pattern can be formed into a size suitable for its application scene by the projection lens.

In an exemplary embodiment of the projection device, the projection device further comprises: and a shutter disposed between the light source and the diffraction section, configured to cause at least a portion of the first light beam emitted from the first light source to be incident on the diffraction section at predetermined time intervals.

In this way, by causing at least a part of the first light beam to be incident on the diffraction section at predetermined time intervals by the shutter, an effect such as starlight flickering can be produced without frequently turning on/off the light source.

According to a further aspect of the embodiments of the present application, there is provided a projection system, including the projection apparatus according to the above embodiments, wherein the projection apparatus is an atmosphere lamp; a housing configured to accommodate a projection device; and the control button is arranged on the surface of the shell and can control and operate the projection device.

According to the projection system provided by the embodiment of the application, the dispersion problem in the projection process can be avoided, and meanwhile, the plurality of projection patterns can be switched, so that the finally formed projection patterns have diversity and flexibility.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 shows a block circuit diagram of a projection device in the prior art;

fig. 2 shows a schematic view of a projection device according to a first exemplary embodiment of the present application;

fig. 3 shows a schematic view of a projection device according to a second exemplary embodiment of the present application;

fig. 4 shows a schematic view of a projection device according to a third exemplary embodiment of the present application; and

fig. 5 shows a schematic structural diagram of a projection system according to an exemplary embodiment of the present application.

Description of the figures:

100: projection device

101: first light source

103: diffraction part

105: reflection part

107: beam splitter

109: beam expander

1011: first light beam

1011-1: first sub-beam

1011-2: second sub-beam

1021: second light beam

111: projection lens

113: shutter

115: controller

200: projection device

201: a second light source.

300: projection device

1022: light beam

400: projection system

401: base seat

4011: base upper cover

4012: base lower cover

4013: weighting disc

O: round hole

403: support rod

405: cup body

4051: light-passing part

4052: fixing plate

407: face cover

409: projection lens

411 to 413: control button

415: opening holes

M: first motor

H: and (7) a light through hole.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules or elements is not necessarily limited to those steps or modules or elements expressly listed, but may include other steps or modules or elements not expressly listed or inherent to such process, method, article, or apparatus.

According to an embodiment of the present application, there is provided a projection apparatus. Fig. 2 shows a schematic view of a projection device according to a first exemplary embodiment of the present application.

As shown in fig. 2, the projection device 100 includes a first light source 101, a diffraction unit 103, and a reflection unit 105. The first light source 101 emits a first light beam 1011. The diffraction unit 103 is provided with a first predetermined pattern, and can diffract at least a part of the first light beam 1011 emitted from the first light source 101 to form a first pattern corresponding to the first predetermined pattern. The reflection part 105 is provided with one or more second predetermined patterns capable of reflecting the second light beam 1021 incident thereon to form second patterns corresponding to the one or more second predetermined patterns. One or both of the first pattern and the second pattern are superimposed to form a projected pattern.

In this way, the second pattern is formed by reflecting the light beam by the reflection portion 105 on which the one or more second predetermined patterns are provided, the dispersion problem of the light beam occurring when the light beam is transmitted through the optical member is avoided, thereby making the formed projection pattern clearer.

In this embodiment, the first light source 101 may be a coherent light source, such as a laser.

In this embodiment, the diffraction section 103 may be a Diffractive Optical Element (DOE), but the present application is not limited thereto, and any element capable of diffracting at least a part of the first light source 101 may be used as the diffraction section 103. The first predetermined pattern on the diffraction part 103 may be arranged according to an intended projection pattern, for example, if the intended projection pattern is a pattern suitable for a baked christmas atmosphere, the predetermined pattern on the diffraction part 103 may be a christmas tree, a santa claus, or the like. The first predetermined pattern may be formed on the diffraction part 103 by photolithography.

The reflective portion 105 may be made of any material capable of reflecting light, including but not limited to a metal substrate, a glass substrate, and the like.

The second predetermined pattern on the reflection part 105 may be one or more, for example, a plurality of different second predetermined patterns may be formed on different areas of the reflection part 105, and the patterns may be arranged according to a desired projection pattern, for example, a cloud pattern, a galaxy pattern, a forest pattern, a park pattern, and the like. The number of patterns may be set according to the size of the reflection part 105 and the size of the patterns.

The one or more second predetermined patterns on the reflective portion 105 may also include different regions having different colors, e.g., red regions, green regions, blue regions, etc.

The one or more second predetermined patterns may be formed on the reflection part 105 in various ways, for example, one or more holographic patterns may be formed on the reflection part 105 by a holographic technique, or one or more non-holographic patterns may be formed on the reflection part 105 by vacuum aluminizing on, for example, a Si substrate. The above are only some preferred examples of the manner of forming the second predetermined pattern on the reflection portion 105, but the present application is not limited thereto, and any manner capable of forming the second predetermined pattern on the reflection portion 105 is applicable to the present application.

In this embodiment, as shown in fig. 2, the projection device 100 may further include a beam splitter 107 and a beam expander 109. The beam splitter 107 is disposed between the first light source 101 and the reflection part 105, and is configured to split the first light beam 1011 emitted from the first light source 101 into a first sub-light beam 1011-1 and a second sub-light beam 1011-2 incident on the diffraction part 103, and the diffraction part 103 diffracts the second sub-light beam 1011-2 to form a first pattern corresponding to the first predetermined pattern. The beam expander 109 is disposed between the beam splitter 107 and the reflection portion 105 and configured to expand the first sub-beam 1011-1 to form a second beam 1021.

In this embodiment, the first sub-beam 1011-1 is formed by the beam splitter 107 transmitting a portion of the first beam 1011, and the first sub-beam 1011-1 transmitted by the beam splitter 107 is incident on the beam expander 109. The second sub-beam 1011-2 is formed by the beam splitter 107 reflecting another part of the light of the first beam 1011, and the second sub-beam 1011-2 reflected by the beam splitter 107 is incident on the diffraction unit 103.

In this embodiment, as shown in fig. 2, the projection device 100 may further include a projection lens 111 configured to diverge the second light beam 1021 reflected from the reflection part 105 to form a second pattern. The projection lens 111 may be a single-sided convex lens with one side being flat and the other side being convex, but the application is not limited thereto, and any lens that can diverge the reflected second light beam 1021 may be used as the projection lens 111.

In this embodiment, although not shown in fig. 2, the projection device 100 may further include a first motor and a second motor. The first motor is connected to the reflection part 105 and configured to drive the reflection part 105 to rotate so that the second light beam 1021 is incident on a different second predetermined pattern on the reflection part 105 to generate a different second pattern. The second motor is connected to the diffraction part 103 and configured to drive the diffraction part 103 to rotate so that the first predetermined pattern on the diffraction part 103 moves in the projection pattern.

In this embodiment, optionally, the projection device 100 may further include a shutter (shutter)113, which may be disposed between the first light source 101 and the diffraction part 103, and more specifically, may be disposed between the beam splitter 107 and the diffraction part 103, and configured to make at least a part of the first light beam 1011 emitted from the first light source 101 (i.e., the second sub-light beam 1011-2) incident on the diffraction part 103 at predetermined time intervals. For example, when the desired projection pattern is a starry sky pattern, the effect of a starry flickering in the sky can be achieved by controlling the shutter 113 to make the second sub-beam 1011-2 incident on the diffraction section 103 at predetermined time intervals. The present application is not limited thereto, and the effect of twinkling stars may be achieved by controlling the on/off frequency of the first light source 101 without providing the shutter 113.

In this embodiment, as shown in fig. 2, the projection device 100 may further include a controller 115 communicatively connected (e.g., wired or wirelessly connected) with the first light source 101, the diffraction part 103, the reflection part 105, the shutter 113, the first motor, the second motor, and the like and configured to control these components. For example, the controller 115 may control the rotation speed and/or the rotation direction of the first motor and/or the second motor, thereby controlling the rotation speed and/or the rotation direction of the reflection part 105 and/or the diffraction part 103 to achieve different projection patterns and projection effects. If the projection device 100 includes a shutter 113, the controller 115 may also control the exposure time of the shutter 113 to achieve different flickering effects for stars. The controller 115 may control the on/off frequency of the first light source 101 to achieve the effect of twinkling stars without the shutter 113. The controller 115 may be implemented as a CPU, processor, motherboard, or the like.

To better understand the first exemplary embodiment of the present application, how the projection device 100 of the first exemplary embodiment of the present application implements projection patterns of starry sky/firefly park effects is described below as an example of the projection patterns.

A dot pattern is provided on the diffraction unit 103, and a cloud pattern or a park pattern is formed in each of two areas on the reflection unit 105.

The controller drives the first motor to rotate the reflection part 105, and selects a cloud pattern on the reflection part 105.

The first light source 101 as a laser emits a first light beam 1011, and the first light beam 1011 is split by the beam splitter 107 into a first sub-beam 1011-1 and a second sub-beam 1011-2. The second sub-beam 1011-2 enters the diffraction unit 103 through the shutter 113, and the second sub-beam 1011-2 is diffracted by the diffraction unit 103 to form a first pattern corresponding to a dot pattern provided on the diffraction unit 103, and the first pattern looks like a star or a firefly. The stars or fireflies can be made to have a flickering effect by controlling the exposure time of the shutter 113 by the controller 115.

The first sub-beam 1011-1 is incident on the beam expander 109, and the beam expander 109 expands the first sub-beam 1011-1 to form a second beam 1021. The second light beam 1021 is incident on the cloud pattern on the reflection part 105, and is reflected by the reflection part 105. The projection lens 111 diverges the second light beam reflected from the reflection part 105 to form a second pattern corresponding to the cloud pattern on the reflection part 105.

A first pattern that looks like a star or a firefly superimposed on a second pattern corresponding to a cloud pattern forms a starry sky effect.

The controller drives the first motor to rotate the reflection unit 105, selects a park pattern on the reflection unit 105, and reflects the incident second light beam 1021 by the reflection unit 105 to form a second pattern corresponding to the park pattern.

The superposition of a first pattern that looks like a star or a firefly on a second pattern corresponding to a park pattern creates the effect of a firefly park.

Here, for simplicity, only the case where the projection apparatus 100 can implement two scenes is described, but this is merely an example, and the present application is not limited thereto, and a plurality of patterns may be provided on the reflection part 105 as needed to implement a plurality of different scenes.

Fig. 3 shows a schematic view of a projection device according to a second exemplary embodiment of the present application. The main difference between the projection device 200 according to the second exemplary embodiment of the present application and the projection device 100 according to the first exemplary embodiment of the present application is that in the projection device 200, a second light source 201 is additionally provided for the reflection portion. In the following description of the projection device 200, the same components as those of the projection device 100 will be denoted by the same reference numerals, and only differences between the projection device 200 and the projection device 100 will be described, and the configuration and operation of the same components of the projection device 200 and the projection device 100 can be referred to the description in conjunction with fig. 2, and will not be described below.

As shown in fig. 3, the projection device 200 may include a first light source 101, a second light source 201, a diffraction part 103, a reflection part 105, a projection lens 111, a shutter 113, and a controller 115, the first motor being connected to the reflection part 105 and configured to drive the reflection part 105 to rotate, the second motor being connected to the diffraction part 103 and configured to drive the diffraction part 103 to rotate, and the controller 115 may further control the second light source 201.

In the projection device 200, the first light beam 1011 emitted from the first light source 101 is diffracted by the diffraction section 103 to form a first pattern corresponding to a first predetermined pattern.

The light source 201 emits a second light beam 1021, and the second light beam 1021 is reflected by the reflection part 105 to form a second pattern corresponding to one or more second predetermined patterns.

The control section 115 may control the light emission of the first light source 101 or the second light source 201 so that the projection pattern of the projection device 200 may be a superposition of one or both of the first pattern and the second pattern, for example, the projection pattern may be only the first pattern, only the second pattern, or a pattern in which the first pattern is superposed on the second pattern.

The second light source 201 may be a coherent light source or an incoherent light source.

When the second light source 201 is a coherent light source, the one or more second predetermined patterns on the reflection part 105 are one or more hologram patterns formed by a hologram technique. The controller 115 controls the first motor to rotate the reflection part 105, so that the coherent second light beam 1021 emitted from the second light source 201 is incident on a different second predetermined pattern (hologram pattern) on the reflection part 105 to generate a different second pattern.

When the second light source 201 is an incoherent light source, for example, an RGB light source, the one or more second predetermined patterns on the reflection part 105 are one or more non-hologram patterns formed by vacuum aluminizing on, for example, a Si substrate. For example, the non-holographic pattern on the reflection part 105 may be one on which a pattern within a certain interval frame of a predetermined object (for example, a small fish in the submarine world) is continuously formed, so that when the reflection part 105 is rotated at a speed corresponding to the resolution of human eyes by the driving of the first motor, the small fish swimming in the submarine world is formed by the reflected second light beam 1021, obtaining a dynamic effect of swimming of the fish in the submarine world.

Fig. 4 shows a schematic view of a projection device according to a third exemplary embodiment of the present application. The main difference between the projection apparatus 300 according to the third exemplary embodiment of the present application and the projection apparatus 100 according to the first exemplary embodiment of the present application is that, in the projection apparatus 300, the reflection part 105 is a self-luminous part, and a light source is not additionally provided to the reflection part 105. In the following description of the projection device 300, the same components as those of the projection device 100 will be denoted by the same reference numerals, and only differences between the projection device 300 and the projection device 100 will be described, and the configuration and operation of the same components of the projection device 300 and the projection device 100 can be referred to the description in conjunction with fig. 2, and will not be described below.

As shown in fig. 4, the projection device 300 includes a first light source 101, a diffraction part 103, a reflection part 105, a projection lens 111, a shutter 113, and a controller 115, the first motor being connected to the reflection part 105 and configured to drive the reflection part to rotate, and the second motor being connected to the diffraction part 103 and configured to drive the diffraction part 103 to rotate.

In the projection device 300, the first light beam 1011 emitted from the first light source 101 is diffracted by the diffraction section 103 to form a first pattern corresponding to a first predetermined pattern.

The reflection part 105 is a self-light emitting part, and for example, the reflection part 105 may include a self-light emitting dot matrix composed of a plurality of Organic Light Emitting Diodes (OLEDs), each OLED being a self-light emitting point. However, the present invention is not limited to this, and the reflection portion 105 may include a self-luminous dot matrix including a plurality of Quantum Light Emitting Diodes (QLEDs), each QLED being a self-luminous point. It should be noted here that the self-luminous dot matrix of the reflection portion 105 of the present application may include a dot matrix of any element that can self-emit light that newly appears in the future.

The controller 115 may control the self-luminous points in the self-luminous dot matrix of the reflection part 105 to form one or more second predetermined patterns by the self-luminous points, and to form a second pattern corresponding to the one or more second predetermined patterns by the self-luminous of the self-luminous points of the reflection part 105 forming the one or more second predetermined patterns. Specifically, the projection lens 111 diverges the light beams 1022 emitted from the light emitting points of the reflection part 105, which form one or more second predetermined patterns, to form the second pattern.

The control section 115 may also control the light emission of the first light source 101 so that the projection pattern of the projection device 300 may be a superposition of one or both of the first pattern and the second pattern, for example, the projection pattern may be only the first pattern, only the second pattern, or a pattern in which the first pattern is superposed on the second pattern.

In this embodiment, since the second predetermined pattern on the reflection portion 105 can be formed by controlling the self-light-emitting points in the self-light-emitting dot matrix, the number and the style of the second predetermined pattern can be increased, and the projection pattern can be set at will according to the user's requirement without replacing the reflection portion 105, so that the design of the projection apparatus is more flexible.

The above-described projection apparatus according to the first to third exemplary embodiments of the present application may be an atmosphere lamp.

Fig. 5 is a schematic structural diagram of a projection system according to an exemplary embodiment of the present application, in which fig. 5 (a) is an overall external view of the projection system 400, and fig. 5 (b) is an exploded perspective view of the projection system 400.

As shown in fig. 5, the projection system 400 includes: a housing; a projection device housed within the housing, the projection device may be an atmosphere lamp; and the control button is arranged on the surface of the shell and can control and operate the projection device. Here, the projection device is any one of the projection devices described above with reference to fig. 2 to 4, and the specific configuration thereof is not described here again.

Specifically, as shown in (a) and (b) of fig. 5, the projection system 400 includes, in order from bottom to top: base 401, support rods 403, cup 405, face cover 407, and projection lens 409.

The base 401 includes a base upper cover 4011, a base lower cover 4012, and a weight disc 4013 provided between the base upper cover 4011 and the base lower cover 4012 to increase the weight of the base. The base upper cover 4011, the base lower cover 4012, and the weight-added disk 4013 are combined into the base 401 by screw connection. Base upper cover 4011, base lower cover 4012 and aggravate disc 4013 and be the same discoid, are provided with round hole O at the central point that base upper cover 4011 and aggravate disc 4013 correspond.

The lower end of the support rod 403 is inserted into a circular hole O provided at the center of the base 401.

The cup 405 is adapted to receive any of the projection devices described above in connection with fig. 2-4. For example, the first light source 101, the second light source 201, the first motor M, and the reflection unit 105 of the projection device 200 are supported in the cup 405 in the arrangement shown in fig. 5 (b). A light passing portion 4051 is provided in the cup 405 to spatially define the second light beam emitted from the second light source 201 and improve light efficiency. Also disposed within the cup 405 is a fixing plate 4052 disposed between the first motor M and the reflective portion 105 for fixing the first motor M and the reflective portion 105 to the bottom of the light passing portion 4051. The second light flux emitted from the second light source 201 enters the light-transmitting portion 4051 through the hole H in the light-transmitting portion 4051, is incident on the reflecting portion 105, and the light reflected by the reflecting portion 105 is emitted from the top of the light-transmitting portion 4051. The second light source 201 is fixed inside the bottom of the cup 405. The bottom of the cup 405 is connected to the upper end of the support bar 403 by a bolt, so that the cup 405 can be pivoted up and down or left and right around the support bar 403 to adjust the angle of the cup 405 and thus the angle at which the projection device projects the pattern.

The surface cover 407 covers the rim of the cup body 405, and an opening having a size corresponding to the area of the top surface of the light transmitting portion 4051 is provided in the center of the surface cover 407.

The projection lens 409 is covered at the opening of the face cover 407 to close the cup 405.

At least one control button is provided on the face cover 407 to control the projection device inside the cup body 405, and specifically, for example, as shown in fig. 5 (b), three circular holes are further provided on the face cover 407, and when the face cover 407 is placed on the opening of the cup body 405, the three control buttons 411, 412, and 413 are exposed from the corresponding three circular holes of the face cover 407. The button 411 is a power switch button for controlling the start and stop of the projection system 400, the button 412 is a color adjusting button for selecting a color projected by the projection system 400, and the button 413 is a motor speed adjusting button for adjusting the rotation speed of the first motor or the second motor used in the projection apparatus. Although three control buttons for performing on-off control, color control, and motor rotation speed control are shown here, the present application is not limited thereto, and the number of buttons and control functions may be set according to user needs. In the present application, in addition to the control operation of the projection system 400 by the control buttons, a remote controller may be further provided for the projection system 400 to remotely control the projection system.

An opening 415 is further provided on the face cover 407 adjacent to the projection lens 409, and the diffraction section 103 (not shown in fig. 5 b) covers the opening 415 on a face of the face cover 407 facing the cup 405. The first light beam emitted from the first light source 201 is incident on the diffraction part 103 and exits through the opening 415, generating a first pattern. The first pattern is superimposed on the second pattern projected from the projection lens 409 to form a projection pattern.

The cup-shaped projection system of the present application is illustrated above by way of example, but the present application is not limited thereto, and the projection system of the present application may be provided in any shape according to the preference of a user or the use occasion.

In the above embodiments of the present application, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units or modules is only one logical division, and there may be other divisions when the actual implementation is performed, for example, a plurality of units or modules or components may be combined or integrated into another system, or some features may be omitted or not executed.

The foregoing is only a preferred embodiment of the present application and it should be noted that, as will be apparent to those skilled in the art, numerous modifications and adaptations can be made without departing from the principles of the present application and such modifications and adaptations are intended to be considered within the scope of the present application.

Claims (21)

1. A projection device, comprising:

a first light source (101) emitting a first light beam (1011);

a diffraction part (103) on which a first predetermined pattern is provided, the diffraction part (103) being capable of diffracting at least a part of the first light beam (1011) emitted from the first light source (101) to form a first pattern corresponding to the first predetermined pattern; and

a reflective portion (105) having one or more second predetermined patterns disposed thereon, the reflective portion (105) being capable of reflecting a second light beam (1021) incident thereon to form a second pattern corresponding to the one or more second predetermined patterns,

wherein one or both of the first pattern and the second pattern are superimposed to form a projected pattern.

2. The projection device of claim 1, wherein the projection device further comprises:

a beam splitter (107) disposed between the first light source (101) and the reflection part (105) and configured to split the first light beam (1011) emitted from the first light source (101) into a first sub-light beam (1011-1) and a second sub-light beam (1011-2) incident on the diffraction part, wherein the diffraction part (103) diffracts the second sub-light beam (1011-2) to form a first pattern corresponding to the first predetermined pattern;

a beam expander (109) disposed between the beam splitter (107) and the reflection portion (105) configured to expand the first sub-beam (1011-1) to form the second beam (1021).

3. The projection device of claim 1, wherein the projection device further comprises:

a second light source (201) emitting the second light beam (1021).

4. Projection device according to claim 3,

the second light source (201) is a coherent light source and the one or more second predetermined patterns are holographic patterns.

5. Projection device according to claim 3,

the second light source (201) is an incoherent light source, and the one or more second predetermined patterns are patterns formed by vacuum aluminizing on a substrate.

6. The projection device according to claim 2, wherein the first light source (101) is a coherent light source and the one or more second predetermined patterns are holographic patterns.

7. The projection device of claim 6, wherein the coherent light source is a laser.

8. The projection device according to claim 6, characterized in that the diffraction part (103) comprises a diffractive optical element.

9. The projection device of any of claims 1-8, further comprising:

a first motor connected to the reflection part (105) configured to drive the reflection part (105) to rotate such that the second pattern rotates with rotation of the reflection part (105).

10. The projection device of any of claims 1-8, further comprising:

a second motor connected to the diffraction unit (103) and configured to drive the diffraction unit (103) to rotate.

11. The projection device of any of claims 1-8, further comprising:

a projection lens (111) configured to diverge the second light beam (1021) reflected from the reflection portion (105) to form the second pattern.

12. The projection device of any of claims 1-8, further comprising:

a shutter (113) disposed between the first light source (101) and the diffraction part (103), configured to cause at least a part of the first light beam (1011) emitted from the first light source (101) to be incident on the diffraction part (103) at predetermined time intervals.

13. A projection device, comprising:

a first light source (101) emitting a first light beam (1011);

a diffraction part (103) on which a first predetermined pattern is provided, the diffraction part (103) being capable of diffracting at least a part of the first light beam (1011) emitted from the first light source to form a first pattern corresponding to the first predetermined pattern;

a reflection unit (105) having a self-luminous dot matrix including a plurality of self-luminous points; and

a controller (115) configured to control self-luminous points in the self-luminous dot matrix to form one or more second predetermined patterns, a second pattern corresponding to the one or more second predetermined patterns being formed by self-luminescence of the self-luminous points forming the one or more second predetermined patterns,

wherein one or both of the first pattern and the second pattern are superimposed to form a projected pattern.

14. The projection device according to claim 13, wherein the first light source (101) is a coherent light source.

15. The projection device of claim 14, wherein the coherent light source is a laser.

16. The projection device according to claim 14, characterized in that the diffraction part (103) comprises a diffractive optical element.

17. The projection device of claim 13, wherein the projection device further comprises:

a first motor connected to the reflection part (105) configured to drive the reflection part (105) to rotate such that the second pattern rotates with rotation of the reflection part (105).

18. The projection device of claim 13, wherein the projection device further comprises:

a second motor connected to the diffraction unit (103) and configured to drive the diffraction unit (103) to rotate.

19. The projection device of claim 13, wherein the projection device further comprises:

a projection lens (111) configured to diverge a light beam emitted from the self-luminous points of the reflection part (105) forming the one or more second predetermined patterns to form the second pattern.

20. The projection device of claim 13, wherein the projection device further comprises:

a shutter (113) disposed between the first light source (101) and the diffraction part (103), configured to cause at least a part of the first light beam (1011) emitted from the first light source (101) to be incident on the diffraction part (103) at predetermined time intervals.

21. A projection system, comprising

The projection device of any of claims 1-20, wherein the projection device is an atmosphere lamp;

a housing configured to accommodate the projection device; and

and the control button is arranged on the surface of the shell and can control and operate the projection device.

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