CN216118203U - Color wheel device, lighting system and display equipment - Google Patents

Abstract

The application discloses colour wheel device, lighting system and display device relates to optics technical field. The color wheel device comprises a color wheel body and a guide assembly; the color wheel body is provided with a first surface and a second surface which are arranged in an opposite way, and the color wheel body comprises a first annular area and a second annular area which are arranged in the same rotating center; the first annular area is provided with an exciting light diffusion sheet; the second annular area is provided with an excitation light reflection area and a fluorescence excitation area; the guiding assembly is used for projecting the excitation light reflected by the excitation light reflecting area to one side surface of the excitation light diffuser, which is positioned on the first surface, so that one side surface of the first annular area, which is positioned on the first surface, is provided with a projection light spot and a projection light spot moving area; the first annular area corresponds to the movement of the projection light spot in the projection light spot active area, and an emergent light spot active area is arranged on one side surface of the second surface; the emergent light spot active area is positioned in one side surface of the second surface of the exciting light diffuser. This application can avoid the exciting light to directly follow the colour wheel device outgoing without breaing up.

Description

Color wheel device, lighting system and display equipment

Technical Field

The present application relates to the field of optical technologies, and in particular, to a color wheel device, an illumination system, and a display device.

Background

The display device generally uses an optical engine to generate an image beam, the optical engine generally includes an excitation Light source, a color wheel device, and a DLP (Digital Light Processing) system, wherein the excitation Light emitted from the excitation Light source excites the color wheel device to generate a received laser, and the received laser is mixed with the excitation Light to provide illumination for the DLP system, so that the DLP system generates a display image.

The prior color wheel device needs to scatter the exciting light passing through the color wheel device before providing illumination for the DLP system, but still has the problem that the exciting light which is not scattered irradiates the DLP system, so that an over-bright exciting light spot exists in a display image generated by the DLP system, and an over-bright exciting light leaks from an optical machine screen.

SUMMERY OF THE UTILITY MODEL

In view of the above, to solve the above technical problem, the present application provides a color wheel device, an illumination system and a display device.

In order to achieve the above object, the present application provides a color wheel device, which includes a color wheel body and a guiding assembly; wherein the content of the first and second substances,

the color wheel body is provided with a first surface and a second surface which are arranged in an opposite way, and the color wheel body comprises a first annular area and a second annular area which are arranged in the same rotating center; the first annular area is provided with an exciting light diffusion sheet used for diffusing incident exciting light; the second annular area is provided with an excitation light reflection area and a fluorescence excitation area;

the guiding component is used for projecting the excitation light reflected by the excitation light reflecting region to one side surface of the excitation light diffuser, which is positioned on the first surface, so that one side surface of the first annular region, which is positioned on the first surface, is provided with a projection light spot;

the first annular area is positioned on one side surface of the first surface and is provided with a projection light spot moving area corresponding to the excitation light reflection area; the first annular area corresponds to the movement of the projection light spot in the projection light spot active area, and an emergent light spot active area is arranged on one side surface of the second surface; and the emergent light spot active area is positioned in one side surface of the exciting light diffuser, which is positioned in the second surface.

In order to solve the above technical problem, another technical solution adopted by the present application is to provide an illumination system, including an excitation light source and a color wheel device, where the excitation light source is used for generating excitation light; the color wheel device is used for generating excited light under the excitation of the excitation light generated by the excitation light source, and is the color wheel device.

In order to solve the above technical problem, another technical solution adopted by the present application is to provide a display device, including an illumination system and an optical engine, where the illumination system is the above illumination system; the optical machine is arranged on an emergent light path of the illumination system and used for generating a display image under the irradiation of the light output by the illumination system.

Has the advantages that: different from the prior art, the excitation light reflector is used for projecting the excitation light reflected by the excitation light reflection area to one side surface of the excitation light diffuser, which is located on the first surface, through the guide assembly, so that one side surface of the first annular area, which is located on the first surface, is provided with a projection light spot; the first annular area is positioned on one side surface of the first surface and is provided with a projection light spot moving area corresponding to the excitation light reflection area; the first annular area corresponds to the movement of the projection light spot in the projection light spot active area, and an emergent light spot active area is arranged on one side surface of the second surface; and the emergent light spot active area is positioned in one side surface of the second surface of the exciting light diffuser. Therefore, the light-transmitting area in the projection light spot active area is the area where the exciting light diffusion sheet is located, so that the exciting light emitted from the projection light spot active area is diffused by the exciting light diffusion sheet, the exciting light which is not diffused can be prevented from being emitted through the color wheel body, and the problem of leakage of the exciting light which is too bright on the light machine screen is avoided.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a color wheel device according to the present application;

fig. 2 is a schematic view of a first surface of a color wheel body of an embodiment of the present application at a moment when the color wheel body rotates around a rotation center;

fig. 3 is a schematic view of a second surface of the color wheel body in fig. 2;

fig. 4 is a schematic view of the first surface of the color wheel body at another time when the color wheel body rotates around the rotation center according to the embodiment of the present application;

fig. 5 is a schematic view of a first surface of a color wheel body according to another embodiment of the present application;

fig. 6 is a schematic diagram of a second surface of the color wheel body according to another embodiment of the color wheel device of the present application;

fig. 7 is a schematic view of a first surface of a color wheel body according to still another embodiment of the color wheel apparatus of the present application;

fig. 8 is a cross-sectional view of the color wheel body of fig. 7 taken along section line a-a;

fig. 9 is a schematic view of a second surface of a color wheel body of yet another embodiment of the color wheel apparatus of the present application;

fig. 10 is a schematic view of a first surface of a color wheel body according to still another embodiment of the color wheel device of the present application;

fig. 11 is a schematic view of a second surface of the color wheel body according to still another embodiment of the color wheel device of the present application;

FIG. 12 is a schematic structural view of an embodiment of the illumination system of the present application;

fig. 13 is a schematic structural diagram of a display device of the present application.

Detailed Description

In order to make the technical solutions of the present application better understood by those skilled in the art, the present application is described in further detail below with reference to the accompanying drawings and the detailed description. It is to be understood that the described embodiments are merely some embodiments of the present application and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application belong to the protection scope of the present application.

Referring to fig. 1-2, fig. 1 is a schematic structural diagram of an embodiment of a color wheel device according to the present application; fig. 2 is a schematic view of a first surface of a color wheel body of an embodiment of the color wheel device at a moment when the color wheel body rotates around a rotation center.

As shown in fig. 1-2, the color wheel device 10 of the present application can be applied to an optical engine (not shown) to solve the problem that the optical engine top screen has too bright excitation light leakage. The color wheel device 10 includes a color wheel body 100 and a guide assembly 200.

As shown in fig. 2, the color wheel body 100 may have a rotation center O about which the color wheel body 100 may rotate in a circumferential direction W thereof. The externally incident excitation light L1 may be incident to the color wheel body 100 to form an incident light spot SP1 on an incident surface of the color wheel body 100. With the rotation of the color wheel body 100 around the rotation center O, different positions of the color wheel body 100 may be rotated to the emission light path of the laser L1 along the circumferential direction of the color wheel body 100, so that the position of the incident light spot SP1 on the color wheel body 100 changes, that is, the incident light spot SP1 moves around the rotation center O in the color wheel body 100 based on the rotation of the color wheel body 100 around the rotation center O. The angular velocity at which the incident light spot SP1 moves in the color wheel body 100 may be equal to the angular velocity at which the color wheel body 100 rotates about the rotation center O. The direction in which the incident light spot SP1 moves in the color wheel body 100 is opposite to the direction in which the color wheel body 100 rotates about the rotation center O.

As shown in fig. 1-2, the color wheel body 100 may have a first surface 101 and a second surface 102 disposed back to back. The color wheel body 100 may include a first annular region 110 and a second annular region 120 disposed with a rotation center, i.e., the rotation centers of the first annular region 110 and the second annular region 120 are both the rotation center O, so that the first annular region 110 and the second annular region 120 may rotate together around the rotation center O when the color wheel body 100 rotates around the rotation center O. In fig. 2, the first annular region 110 is shown in an exemplary arrangement within the second annular region 120. in other embodiments (not shown), the second annular region may be disposed within the first annular region, or in other arrangements.

The second annular region 120 can be configured to receive externally incident excitation light L1 such that the externally incident excitation light L1 forms an incident light spot SP1 at the second annular region 120. The incident light spot SP1 may move in the second annular region 120 in a circumferential direction around the second annular region 120 based on the rotation of the color wheel body 100 around the rotation center O. Specifically, the second annular region 120 may be provided with an excitation-light reflection region 121 and a fluorescence excitation region 122. The excitation light reflection region 121 is configured to reflect the incident excitation light L1, and the fluorescence excitation region 122 is configured to generate stimulated light (such as fluorescence) under excitation of the incident excitation light L1. When the incident light spot SP1 moves to the fluorescence excitation region 122, the excited fluorescence excitation region 122 generates excited light, and when the incident light spot SP1 moves to the excitation light reflection region 121, the excited light is reflected by the excitation light reflection region 121.

As shown in fig. 1-2, the guiding assembly 200 may be configured to project the excitation light reflected by the excitation light reflecting region 121 toward a side of the excitation light diffuser 111 on the first surface 101, so as to form a projected light spot SP2 on a side of the first annular region 110 on the first surface 101, where the first annular region 110 has a projected light spot active region Q1 corresponding to the excitation light reflecting region 121 on the side of the first surface 101.

Specifically, after the excitation light L1 incident from the outside enters the excitation light reflection region 121, an incident light spot SP1 may be formed on the excitation light reflection region 121, and after the incident light spot SP1 on the excitation light reflection region 121 is projected to the excitation light diffuser 111 through the guiding assembly 200, a corresponding projected light spot SP2 may be formed on the first annular region 110. Incident spots SP1 formed corresponding to different positions on the excitation-light reflecting region 121 have corresponding projected spots SP2, respectively, in the first annular region 110. A set of regions where the incident spots SP1 formed at the respective positions of the excitation-light reflecting region 121 are respectively located at the projected spots SP2 corresponding to the first annular region 110 is referred to as a projected-spot active region Q1, and the size of the projected-spot active region Q1 corresponds to the size of the excitation-light reflecting region 121. Based on the movement of the incident spot SP1 within the excitation-light reflection region 121, its corresponding projected spot SP2 moves within the projected-spot active region Q1. The projected spot SP2 moves in the opposite direction to the incident spot SP1, and the projected spot SP2 moves at the same angular velocity as the incident spot SP1.

Further, referring to fig. 3 on the basis of fig. 2, fig. 3 is a schematic diagram of a second surface of the color wheel body in fig. 2.

The first annular region 110 has an excident spot active region Q2 on one side of the second surface 102 corresponding to the movement of the projected spot SP2 in the projected spot active region Q1.

Specifically, when the projected spot SP2 moves within the projected spot active region Q1, if the projected spot SP2 moves to the light-transmitting region, the excident spot SP3 is formed on a side of the first annular region 110 on the second surface 102 corresponding to the projected spot SP2.

Corresponding projected spots SP2 formed at different positions on the light-transmitting area of the projected spot active area Q1 respectively have corresponding excident spots SP3 on one side of the second surface 102 of the first annular area 110. The set of the projected spots SP2 formed at the respective positions of the light-transmitting areas of the projected spot active area Q1 at the corresponding areas of the excident spots SP3 on the side of the first annular area 110 on the second surface 102 is referred to as excident spot active area Q2, the size of the excident spot active area Q2 is related to the size of the light-transmitting area in the projected spot active area Q1, and the larger the light-transmitting area in the projected spot active area Q1 is, the larger the excident spot active area Q2 is. Based on the movement of the projected spot SP2 in the light-transmitting region within the projected-spot active region Q1, its corresponding excident spot SP3 moves within the excident-spot active region Q2. The moving direction of the excident spot SP3 is the same as the moving direction of the corresponding projected spot SP2, and the angular velocity of the movement of the excident spot SP3 is the same as the angular velocity of the movement of the corresponding projected spot SP2.

Wherein the excident light spot active area Q2 is located in one side surface of the second surface 102 at the excitation light diffuser 111. Therefore, the light transmission area in the projection light spot active area Q1 is the area where the excitation light diffuser 111 is located, so that the excitation light emitted from the projection light spot active area Q2 is scattered by the excitation light diffuser 111, and the problem that the light machine screen has too bright excitation light leakage due to the emission of the excitation light which is not scattered through the color wheel body 100 can be solved.

Referring to fig. 2 and fig. 4 in comparison, fig. 4 is a schematic view of the first surface of the color wheel body of the embodiment of the color wheel device of the present application at another time when the color wheel body rotates around the rotation center.

Fig. 2 and 4 compare and exemplarily show the position change relationship of the incident spot SP1 and the corresponding projected spot SP2. When the incident spot SP1 moves from the spot position SP1.1 to the spot position SP1.2 in the excitation-light reflection area 121, the corresponding projected spot SP2 moves from the spot position SP2.1 to the spot position SP2.2 in the projected-spot active area Q1.

Further, referring to fig. 1, the color wheel device 10 includes a driving device 300, where the driving device 300 is connected to the color wheel body 100 and is configured to drive the color wheel body 100 to rotate around a rotation center O thereof, so that the color wheel body 100 outputs scattered excitation light in time sequence after the excitation light L1 incident externally enters.

Further, as shown in fig. 1, the color wheel device 10 includes a collection lens group 400, the collection lens group 400 is disposed on the light path from the excitation light reflection region 121 to the guiding assembly 200, and is used for collecting the excitation light L1 incident from the outside to the second annular region 120 and collimating the excitation light emitted from the excitation light reflection region 121; the externally incident excitation light L1 enters the second annular region 120 through the collection lens assembly 400, is reflected by the excitation light reflection region 121, and then returns to the collection lens assembly 400 to enter the guide assembly 200 through the collection lens assembly 400.

Optionally, the guide assembly 200 includes a first total reflection mirror 210 and a second total reflection mirror 220; the first total reflector 210 and the second total reflector 220 are disposed on one side of the color wheel body 100 in the exit direction of the excitation light reflection region 121, and are disposed on the opposite side with respect to a rotation axis (not shown) of the color wheel body 100; the excitation light reflecting region 121 and the excitation light diffuser 111 are disposed opposite to the rotation axis of the color wheel body 100; the excitation light reflecting area 121 and the first total reflecting mirror 210 are disposed on the same side of the rotation axis of the color wheel body 100, and the excitation light diffuser 111 and the second total reflecting mirror 220 are disposed on the same side of the rotation axis of the color wheel body 100; the excitation light returning from the excitation light reflection region 121 to the collection lens assembly 400 is reflected by the first total reflection mirror 210 and the second total reflection mirror 220 in sequence to be projected to a side surface of the excitation light diffuser 111 on the first surface 101.

Optionally, the second annular region 120 includes a fluorescent wheel (not shown) and an excitation light reflector (not shown), the excitation light reflector is disposed on a side of the fluorescent wheel adjacent to the first surface 101 of the color wheel body 100, so as to form an excitation light reflection region 121 in a region of the second annular region 120 where the excitation light reflector is disposed, and form a fluorescence excitation region 122 in a region of the second annular region 120 where the excitation light reflector is not disposed; the guiding component 200 may be disposed on a side of the color wheel body 100 facing the first surface 101.

Referring to fig. 5 to 6, fig. 5 is a schematic view of a first surface of a color wheel body according to another embodiment of the color wheel device of the present application; fig. 6 is a schematic diagram of a second surface of the color wheel body according to another embodiment of the color wheel device of the present application.

The color wheel device 10 according to another embodiment of the present application is further defined based on the color wheel device 10 according to one embodiment of the present application. As shown in fig. 5-6, it is further defined that the excitation light reflection area 121 has a first central angle α with respect to the rotation center O of the color wheel body 100; the excitation light diffuser 111 has a second central angle β with respect to the rotation center O of the color wheel body 100; wherein the first central angle α is smaller than the second central angle β, so that the excident light spot active area Q2 is located in a side surface of the excitation light diffuser 111 on the second surface 102.

Specifically, in this another embodiment, the central angle θ of the projection light spot activity region Q1 with respect to the rotation center O of the color wheel body 100 is equal to the central angle θ of the excitation light reflection region 121 with respect to the rotation center O of the color wheel body 100, and since the excitation light reflection region 121 has the first central angle α with respect to the rotation center O of the color wheel body 100, the central angle θ of the projection light spot activity region Q1 with respect to the rotation center O of the color wheel body 100 is equal to the first central angle α. Since the angle of the first circular angle α is smaller than the second central angle β of the excitation light diffuser 111 with respect to the rotation center O of the color wheel body 100, the central angle θ of the projection light spot active region Q1 with respect to the rotation center O of the color wheel body 100 is smaller than the second central angle β, so that the projection light spot active regions Q1 are all the regions where the excitation light diffuser 111 is located, and thus the central angle of the exit light spot active region Q2 of the exit light spot SP3 located on the side surface of the second surface 102 of the first annular region 110 with respect to the rotation center O of the color wheel body 100 is equal to the second central angle β of the projection light spot active region Q1 with respect to the rotation center O of the color wheel body 100. That is, the excident light spot active region Q2 is located in one side of the excitation light diffuser 111 on the second surface 102. Therefore, after the excitation light reflected by the excitation light reflection region 121 is projected to the excitation light diffuser 111 through the guiding assembly 200, the excitation light emitted from one side surface of the first annular region 110 on the second surface 102 is the excitation light scattered by the excitation light diffuser 111, so that the phenomenon that the excitation light is directly emitted from the color wheel body 100 to the optical engine upper screen without being scattered can be avoided.

Referring to fig. 7 to 9, fig. 7 is a schematic view of a first surface of a color wheel body according to another embodiment of the color wheel device of the present application; fig. 8 is a cross-sectional view of the color wheel body of fig. 7 taken along section line a-a; fig. 9 is a schematic diagram of a second surface of the color wheel body according to still another embodiment of the color wheel device of the present application.

As shown in fig. 7-8, the color wheel device 10 according to another embodiment of the present application is modified based on the color wheel device 10 according to an embodiment of the present application, and is different from the color wheel device 10 according to an embodiment of the present application in that the excitation light reflection area 121 of the color wheel device 10 according to another embodiment of the present application has a first central angle α with respect to the rotation center O of the color wheel body 100; the excitation light diffuser 111 has a second central angle β with respect to the rotation center O of the color wheel body 100; the first central angle α is equal to a vertex angle δ of the first central angle α, and the vertex angle δ of the first central angle α is greater than or equal to the second central angle β, i.e., the first central angle α is greater than or equal to the second central angle β.

As shown in fig. 7-8, the color wheel body 100 includes a shielding member 130, and the shielding member 130 is disposed at least one end of the excitation light reflection region 121 in the circumferential direction of the second annular region 122 to partially shield the excitation light reflection region 121, so that the excitation light reflection region 121 is divided into a shielding region 1211 and a non-shielding region 1212.

The non-blocking region 1212 has a third central angle &withrespect to the rotation center O of the color wheel body 100, and the third central angle & is smaller than the second central angle β.

Specifically, as shown in fig. 7 to 9, in this further embodiment, the central angle θ of the projection light spot active region Q1 with respect to the rotation center O of the color wheel body 100 is equal to the third central angle &, and since the third central angle & is smaller than the second central angle β, the central angle θ of the projection light spot active region Q1 with respect to the rotation center O of the color wheel body 100 is smaller than the second central angle β, so that the projection light spot active regions Q1 are all regions where the excitation light diffusers 111 are located, and thus the central angle of the exit light spot active region Q2 located at the exit light spot SP3 of the second surface 102 with respect to the rotation center O of the color wheel body 100 is equal to the second central angle β of the projection light spot active region Q1 with respect to the rotation center O of the color wheel body 100. That is, the excident light spot active region Q2 is located in a side surface of the excitation light diffuser 111 on the second surface 102. Therefore, after the excitation light reflected by the excitation light reflection region 121 is projected to the excitation light diffuser 111 through the guiding assembly 200, the excitation light emitted from one side surface of the first annular region 110 on the second surface 102 is the excitation light scattered by the excitation light diffuser 111, so that the phenomenon that the excitation light is directly emitted from the color wheel body 100 to the optical engine upper screen without being scattered can be avoided.

Referring to fig. 10-11, fig. 10 is a schematic view of a first surface of a color wheel body according to still another embodiment of the color wheel device of the present application; fig. 11 is a schematic view of a second surface of the color wheel body according to still another embodiment of the color wheel device of the present application.

As shown in fig. 10-11, a color wheel device 10 according to still another embodiment of the present application is modified based on the color wheel device 10 according to an embodiment of the present application, and is different from the color wheel device 10 according to an embodiment of the present application in that an excitation light reflection region 121 of the color wheel device 10 according to still another embodiment of the present application has a first central angle α with respect to a rotation center O of the color wheel body 100; the excitation light diffuser 111 has a second central angle β with respect to the rotation center O of the color wheel body 100; the first central angle α is equal to a vertex angle δ of the first central angle α, and the vertex angle δ of the first central angle α is greater than or equal to the second central angle β, i.e., the first central angle α is greater than or equal to the second central angle β.

The excitation light diffuser 111 is spliced with other portions of the first annular region 110 at both ends of the annular direction of the first annular region 110 to have a first splicing slit 112 and a second splicing slit 113, respectively. The color wheel body 100 further includes a first soft light-shielding object 140 and a second soft light-shielding object 150, the first soft light-shielding object 140 is disposed corresponding to the first splicing slit 112 to block the excitation light from passing through the first splicing slit 112, and the second soft light-shielding object 150 is disposed corresponding to the second splicing slit 113 to block the excitation light from passing through the second splicing slit 113, so that the exit light spot active region Q2 is located on a side surface of the excitation light diffuser 111 on the second surface 102.

Specifically, as shown in fig. 10 to 11, the central angle θ of the projected light spot active area Q1 relative to the rotation center O of the color wheel body 100 is equal to the first central angle α, and since the first central angle α is greater than the second central angle β, the central angle θ of the projected light spot active area Q1 relative to the rotation center O of the color wheel body 100 is greater than the second central angle β, so that the projected light spot active area Q1 includes the area where the first stitching slit 112 and the second stitching slit 113 are located (in other embodiments, the projected light spot active area Q1 may include only the first stitching slit 112 or only the second stitching slit 113). Therefore, if no processing is performed, the excitation light projected to the first splicing slit 112 and the second splicing slit 113 will not be scattered by the excitation light diffuser 111, and directly pass through the color wheel body 100 from the first splicing slit 112 or the second splicing slit 113, so that a conspicuous excitation light spot appears on the optical machine screen.

In the further embodiment, the first soft light shield 140 is disposed in the first splicing slit 112, and the second soft light shield 150 is disposed in the second splicing slit 113, so that the excitation light projected to the first splicing slit 112 and the second splicing slit 113 is shielded by the first soft light shield 140 and the second soft light shield 150, respectively, and the excitation light projected to the excitation light diffuser 111 located in one side surface of the first surface 101 is scattered by the excitation light diffuser 111 and then emitted from the excitation light diffuser 111 located in one side surface of the second surface 102. Therefore, the excident light spot active region Q2 is located in one side face of the excitation light diffuser 111 on the second surface 102. Therefore, after the excitation light reflected by the excitation light reflection region 121 is projected to the excitation light diffuser by the guiding assembly 200, the excitation light emitted from one side surface of the first annular region 110 on the second surface 102 is the excitation light scattered by the excitation light diffuser 111, so that the phenomenon that the excitation light is directly emitted from the color wheel body 100 to the optical engine upper screen without being scattered can be avoided.

Alternatively, the first and second soft shades 140 and 150 may include, but are not limited to, an adhesive, and the like. In one embodiment, the first soft light shield 140 may be filled into the first splicing gap 112, and the second soft light shield 150 may be filled into the second splicing gap 113; in another embodiment, the first soft light shade 140 may be attached to at least one side surface (e.g., the first surface 101 and/or the second surface) of the color wheel body 100 corresponding to the first splicing gap 112, and the second soft light shade 150 may be attached to at least one side surface (e.g., the first surface 101 and/or the second surface 102) of the color wheel body 100 corresponding to the second splicing gap 113.

Referring to fig. 12, fig. 12 is a schematic structural diagram of an embodiment of the illumination system of the present application.

As shown in fig. 12, the illumination system 30 includes an excitation light source 20 and a color wheel device 10, wherein the excitation light source 20 is used for generating excitation light L1; the color wheel device 10 is configured to generate stimulated light under excitation of the excitation light L1 generated by the excitation light source 20, and the color wheel device 10 is the color wheel device 10 of the foregoing color wheel device embodiment, and details thereof are not repeated herein. The stimulated light may mix with the excitation light L1 to form light L2 that is output outward.

Referring to fig. 13, fig. 13 is a schematic structural diagram of a display device of the present application.

As shown in fig. 13, the display device 40 may be a laser television, a business education projector, a micro projector, an engineering projector, and the like. Of course, the display device 40 is not limited to the above-exemplified items.

Specifically, the display device 40 includes an illumination system 30 and a light engine 50, the illumination system 30 being the illumination system 30 of the illumination system embodiment; the optical engine 50 is disposed on an exit light path of the illumination system 30, and is used for generating a display image L3 under the irradiation of light L2 output by the illumination system 30.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings are included in the scope of the present disclosure.

Claims (10)

1. A color wheel apparatus, comprising:

the color wheel body is provided with a first surface and a second surface which are arranged in an opposite mode, and the color wheel body comprises a first annular area and a second annular area which are arranged in the same rotating center; the first annular area is provided with an exciting light diffuser, and the exciting light diffuser is used for diffusing incident exciting light; the second annular area is provided with an excitation light reflection area and a fluorescence excitation area;

the guiding component is used for projecting the excitation light reflected by the excitation light reflecting area to one side surface of the excitation light diffuser, which is positioned on the first surface, so that one side surface of the first annular area, which is positioned on the first surface, is provided with a projection light spot;

the first annular region is provided with a projection light spot active region corresponding to the excitation light reflection region on one side surface of the first surface; the first annular area corresponds to the movement of the projection light spot in the projection light spot active area, and an emergent light spot active area is arranged on one side surface of the second surface; wherein the emergent light spot active area is positioned in one side surface of the second surface on the exciting light diffuser.

2. The color wheel apparatus as claimed in claim 1,

the excitation light reflection region has a first central angle with respect to the rotation center of the color wheel; the excitation light diffuser has a second central angle with respect to the rotation center of the color wheel;

the first central angle is smaller than the second central angle, so that the emergent light spot active area is positioned in one side face of the second surface on the exciting light diffuser.

3. The color wheel apparatus as claimed in claim 2,

the excitation light reflection region has a first central angle with respect to the rotation center of the color wheel; the excitation light diffuser has a second central angle with respect to the rotation center of the color wheel; the first central angle is greater than or equal to the second central angle;

the color wheel device comprises a shielding piece, wherein the shielding piece is arranged at least one end of the excitation light reflection region in the circumferential direction of the second annular region to partially shield the excitation light reflection region so that the excitation light reflection region is divided into a shielding region and a non-shielding region;

the non-shielding area has a third central angle relative to the rotation center of the color wheel, and the third central angle is smaller than the second central angle, so that the emergent light spot active area is positioned in one side surface of the second surface of the exciting light diffuser.

4. The color wheel apparatus as claimed in claim 1,

the excitation light reflection region has a first central angle with respect to the rotation center of the color wheel; the excitation light diffuser has a second central angle with respect to the rotation center of the color wheel; the first central angle is greater than or equal to the second central angle;

the excitation light diffuser is spliced with other parts of the first annular area at two ends of the annular first annular area so as to be provided with a first splicing gap and a second splicing gap respectively;

the color wheel body comprises a first soft light shield and a second soft light shield, the first soft light shield is arranged corresponding to the first splicing gap to prevent exciting light from penetrating through the first splicing gap, and the second soft light shield is arranged corresponding to the second splicing gap to prevent the exciting light from penetrating through the second splicing gap, so that the emergent light spot moving area is arranged on one side surface, located on the second surface, of the exciting light diffuser.

5. The color wheel device according to any one of claims 1 to 4, wherein the color wheel device comprises a driving device, and the driving device is connected to the color wheel body and configured to drive the color wheel body to rotate around its rotation center, so that the color wheel body outputs scattered excitation light in time sequence after the externally incident excitation light is incident.

6. The color wheel device according to claim 5, wherein the color wheel device comprises a collection lens group, the collection lens group is disposed on the light path from the excitation light reflection region to the guiding component, and is used for collecting the excitation light incident from the outside to the second annular region and collimating the excitation light emitted from the excitation light reflection region;

excitation light incident from the outside enters the second annular region through the collection lens group, is reflected by the excitation light reflection region and then returns to the collection lens group so as to enter the guide assembly through the collection lens group.

7. The color wheel apparatus as claimed in claim 6, wherein the guiding component comprises a first total reflecting mirror and a second total reflecting mirror;

the first total reflector and the second total reflector are arranged on one side of the color wheel body, where the emitting direction of the exciting light reflecting area is located, and are arranged opposite to the rotating axis of the color wheel body; the excitation light reflecting region and the excitation light diffuser are arranged opposite to the rotating axis of the color wheel body; the exciting light reflecting area and the first total reflector are arranged on the same side of the rotating axis of the color wheel body, and the exciting light diffuser and the second total reflector are arranged on the same side of the rotating axis of the color wheel body;

the exciting light returning to the collecting lens group from the exciting light reflecting area is reflected by the first total reflector and the second total reflector in sequence so as to project to one side surface of the exciting light diffuser, which is positioned on the first surface.

8. The color wheel apparatus as claimed in claim 1, wherein the second annular region includes a fluorescent wheel and an excitation light reflector disposed on a side of the fluorescent wheel adjacent to the first surface of the color wheel body to form the excitation light reflector in a region of the second annular region where the excitation light reflector is disposed, and to form the fluorescence excitation region in a region of the second annular region where the excitation light reflector is not disposed;

the guiding component is arranged on one side of the color wheel body, which is faced to the first surface.

9. An illumination system, characterized in that the illumination system comprises:

an excitation light source for generating excitation light;

a color wheel device for generating stimulated light under excitation of excitation light generated by the excitation light source, wherein the color wheel device is the color wheel device according to any one of claims 1 to 8.

10. A display device, characterized in that the display device comprises:

a lighting system, the lighting system of claim 9;

and the optical machine is arranged on the emergent light path of the illumination system and is used for generating a display image under the irradiation of the light output by the illumination system.

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