CN114063374B - Light source device and projection equipment - Google Patents
Light source device and projection equipment Download PDFInfo
- Publication number
- CN114063374B CN114063374B CN202010785607.0A CN202010785607A CN114063374B CN 114063374 B CN114063374 B CN 114063374B CN 202010785607 A CN202010785607 A CN 202010785607A CN 114063374 B CN114063374 B CN 114063374B
- Authority
- CN
- China
- Prior art keywords
- light
- light source
- wavelength conversion
- source module
- light emitting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006243 chemical reaction Methods 0.000 claims abstract description 111
- 239000000758 substrate Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 3
- 239000011324 bead Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 10
- 230000001737 promoting effect Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 20
- 238000010586 diagram Methods 0.000 description 13
- 238000005192 partition Methods 0.000 description 10
- 230000005284 excitation Effects 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
- G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2046—Positional adjustment of light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Projection Apparatus (AREA)
Abstract
The application provides a light source device and a projection apparatus. The light source device comprises a light source module and a wavelength conversion device, wherein the light source module comprises a plurality of light emitting units which are arranged at intervals to form a strip-shaped structure, and each light emitting unit can independently emit light beams. The wavelength conversion device comprises a wavelength conversion region and a non-wavelength conversion region, wherein the wavelength conversion region is used for converting a light beam emitted by the light emitting unit into a laser-receiving light, and the wavelength conversion region and the non-wavelength conversion region are sequentially arranged on an emitting path of the light beam entering the light source module. The light source module performs rotary motion so that the light beams emitted by the light emitting units irradiate different positions of the wavelength conversion region or the non-wavelength conversion region, and the intensity of the light beams emitted by each light emitting unit is independently controlled, so that the local dimming effect of the light source device can be realized, and compared with the linear array lamp beads, the number of the light emitting units is effectively reduced, thereby being beneficial to reducing the cost of the light source module and promoting the miniaturization of the light source module.
Description
Technical Field
The application relates to the technical field of projection display, in particular to a light source device and projection equipment.
Background
The high dynamic range (HIGH DYNAMIC RANGE, HDR) technology can improve the bright-dark contrast in a frame of picture and can be applied to projection display. Projection displays are commonly backlit using linear array beads to achieve Local Dimming (Local Dimming) that keeps the bright portion of the display bright and the rest darkens, effectively improving the bright-dark contrast. However, the number of the linear array beads is large, resulting in a large size and high cost of the linear array beads.
Disclosure of Invention
The embodiment of the application provides a light source device and projection equipment, which are used for solving the technical problem that the volume is large due to the fact that an excessive number of lamp beads are arranged for realizing local dimming.
The embodiments of the present application achieve the above object by the following technical means.
In a first aspect, an embodiment of the present application provides a light source device, where the light source device includes a light source module and a wavelength conversion device, the light source module includes a plurality of light emitting units arranged in a strip structure at intervals, and each light emitting unit can emit light beams independently. The wavelength conversion device comprises a wavelength conversion region and a non-wavelength conversion region, wherein the wavelength conversion region is used for converting a light beam emitted by the light emitting unit into a laser-receiving light, and the wavelength conversion region and the non-wavelength conversion region are sequentially arranged on an emitting path of the light beam entering the light source module. The light source module performs rotary motion so that the light beams emitted by the light emitting unit irradiate different positions of the wavelength conversion region or the non-wavelength conversion region.
In some embodiments, the plurality of light emitting units are distributed at intervals along a radial direction of the rotation track of the light source module.
In some embodiments, the total number of wavelength-converting regions and non-wavelength-converting regions is M, and the rotation frequency of the light source module is nM times the rotation frequency of the wavelength-converting device, where n is a positive integer.
In some embodiments, the light source device further includes a collimating lens group, and the collimating lens group is located on an outgoing light path of the wavelength conversion device, and the light outgoing from the wavelength conversion device is collimated by the collimating lens group and then outgoing.
In some embodiments, the collimating lens group and the wavelength conversion device are arranged at intervals, and the collimating lens group rotates synchronously with the light source module.
In some embodiments, the collimating lens group is attached to a light-emitting surface of the wavelength conversion device, which faces away from the light source module.
In some embodiments, the light source device further includes a light equalizing component, the light equalizing component is located on an outgoing light path of the collimating lens group, and the light outgoing from the collimating lens group is outgoing after being subjected to light equalizing by the light equalizing component.
In some embodiments, the light source module includes a substrate and a rotating shaft connected to each other, the substrate is in a strip shape, the light emitting unit is fixed on the substrate along a length extending direction of the substrate, the rotating shaft is fixed at an end of the substrate, and rotation of the rotating shaft drives the substrate to rotate.
In some embodiments, the light source module includes a substrate and a rotating shaft connected to each other, the substrate is disc-shaped, the light emitting unit is fixed to the substrate along a radial direction of the substrate, and the rotating shaft is fixed to a central position of the substrate and drives the substrate to rotate.
In a second aspect, an embodiment of the present application further provides a projection apparatus, where the projection apparatus includes a spatial light modulator and the light source device of any of the above embodiments. The spatial light modulator comprises a light incident surface, the light source module enables the light emitting units to be positioned at different positions relative to the light incident surface through rotation, and at least part of light emitted by the light emitting units is incident to the light incident surface.
In some embodiments, the light source module is selectively in a first state or a second state by rotating, all light emitting units of the light source module in the first state are located in the first area, a part of light emitting units of the light source module in the second state are located in the first area, another part of light emitting units are located in the second area, light emitted by the light emitting units located in the first area irradiates the light incident surface, and light emitted by the light emitting units located in the second area does not irradiate the light incident surface. The light source device further comprises a processor, the processor controls the light-emitting units located in the first area to emit light according to the image signals, and the processor also controls the light-emitting units located in the second area to be turned off according to the image signals.
In some embodiments, the processor controlling the light emitting units located in the first region to emit light according to the image signal includes at least one of controlling the brightness of the light emitting units located in the first region at different timings according to the image signal, and controlling the brightness of the light emitting units located in different positions of the first region according to the image signal.
In the light source device and the projection equipment provided by the embodiments of the application, the light source module comprises a plurality of light emitting units which are arranged at intervals to form a strip structure, the wavelength conversion device comprises a wavelength conversion area and a non-wavelength conversion area, the wavelength conversion area is used for converting light beams emitted by the light emitting units into laser light, the wavelength conversion area and the non-wavelength conversion area enter the emergent path of the light beams of the light source module in a time sequence, the light source module performs rotary motion so that the light beams emitted by the light emitting units irradiate different positions of the wavelength conversion area or the non-wavelength conversion area, and as each light emitting unit can independently emit light beams, the intensity of the light beams emitted by each light emitting unit is independently controlled, the local dimming effect of the light source device can be realized, and compared with the linear array lamp beads, the number of the light emitting units is effectively reduced, thereby being beneficial to reducing the cost of the light source module and promoting the miniaturization of the light source module.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a light source device and a spatial light modulator according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a light source module of the light source device of fig. 1.
Fig. 3 is a schematic diagram of a light source module of a light source device according to an embodiment of the present application matching with a light incident surface of a spatial light modulator.
Fig. 4 is a schematic diagram of a light source module of a light source device according to another embodiment of the present application matching with a light incident surface of a spatial light modulator.
Fig. 5 is a schematic diagram illustrating a rotation of the light source module of the light source device of fig. 4 to another position opposite to the light incident surface of the spatial light modulator.
Fig. 6 is a schematic block diagram of a light source device according to an embodiment of the present application.
Fig. 7 is a schematic diagram of a light spot of one of light emitting units irradiated to a light incident surface of a spatial light modulator by light emitted from a light source device according to an embodiment of the present application.
Fig. 8 is a schematic diagram of light emitted from a light source module of a light source device according to an embodiment of the present application formed on a light incident surface of a spatial light modulator.
Fig. 9 is a schematic diagram of light emitted from a light source module of a light source device according to another embodiment of the present application formed on a light incident surface of a spatial light modulator.
Fig. 10 is a schematic diagram of a light source module of a light source device according to another embodiment of the present application matching with a light incident surface of a spatial light modulator.
Fig. 11 is a schematic structural view of a light source device according to another embodiment of the present application.
Fig. 12 is a schematic diagram illustrating the co-rotation of a light source module and a wavelength conversion device of the light source device according to the embodiment of the present application.
Fig. 13 is a schematic diagram illustrating reverse rotation of a light source module and a wavelength conversion device of a light source device according to another embodiment of the present application.
Fig. 14 is a schematic structural view of a light source device according to still another embodiment of the present application.
Fig. 15 is a schematic structural diagram of a projection apparatus according to an embodiment of the present application.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description of the present application will be made in detail with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the application. All other embodiments, based on the embodiments of the application, which a person skilled in the art would obtain without making any inventive effort, are within the scope of the application.
Referring to fig. 1, an embodiment of the present application provides a light source device 200, where the light source device 200 is adapted to cooperate with a spatial light modulator 220.
The spatial light modulator 220 may be any one of a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD) device, a Liquid crystal on silicon (Liquid Crystal on Silicon, LCOS) device, a digital micromirror device (Digital Micromirror Device, DMD), and the like. For example, in a scenario where the light source apparatus 200 is applied to a Head Up Display (HUD), the spatial light modulator 220 may be an LCD device or a DMD device, and in a scenario where the light source apparatus 200 is applied to the projection device 1000, the spatial light modulator 220 may be an LCD device or an LCOS device or a DMD device.
The spatial light modulator 220 includes a light incident surface 222, and the spatial light modulator 220 receives the light emitted from the light source device 200 through the light incident surface 222 and emits the modulated light out of the spatial light modulator 220 through an emitting surface. The exit surface and the light incident surface 222 may be the same surface. The size of the light incident surface 222 may be adapted to a projection screen with a ratio of 16:9, or may be adapted to a projection screen with a ratio of 4:3.
The light source device 200 includes a light source module 240 and a wavelength conversion device 280. The light source module 240 is configured to emit light, and the wavelength conversion device 280 is located on an outgoing light path of the light source module 240, so that the spatial light modulator 220 is configured to receive the light beam outgoing from the wavelength conversion device 280.
The light source module 240 is adapted to face the light incident surface 222 of the spatial light modulator 220. Referring to fig. 2, the light source module 240 includes a plurality of light emitting units 242 arranged in a stripe configuration at intervals, and each light emitting unit 242 independently emits light, i.e., each light emitting unit 242 can be individually turned on, turned off, and adjusted in light emitting intensity. The bar structure is not limited to a linear bar structure, and a bar structure with an arc is also suitable. For example, the light emitting units 242 are arranged in a strip-shaped light emitting strip having an arc. The light emitting unit 242 may be a Laser Diode (Laser Diode) or a light emitting Diode (LIGHT EMITTING Diode). The light emitted by the light emitting unit 242 may be blue light, violet light, red light, green light, ultraviolet light or other types of light, which are not illustrated herein.
The light source module 240 may further include a substrate 246 and a rotating shaft 248 connected to each other, for example, the substrate 246 may be substantially in a strip shape, the light emitting unit 242 may be fixed on the substrate 246 along a length extending direction of the substrate 246, the rotating shaft 248 may be fixed on an end portion of the substrate 246, and rotation of the rotating shaft 248 may drive the substrate 246 to rotate, thereby realizing rotation of the light emitting unit 242. In other embodiments, the substrate 246 may have a substantially disk shape, the light emitting unit 242 may be fixed to the substrate 246 along a radial direction of the substrate 246, and the rotation shaft 248 may be fixed to a central position of the substrate 246 and rotate the substrate 246.
The light source module 240 may rotate relative to the spatial light modulator 220, for example, the rotation axis of the light source module 240 may be perpendicular to the light incident surface 222 of the spatial light modulator 220. In other embodiments, the light source module 240 and the spatial light modulator 220 can realize light propagation through the deflection element, and at this time, the rotation axis of the light source module 240 may not need to be perpendicular to the light incident surface 222 of the spatial light modulator 220, which is helpful for the light source module 240 and the spatial light modulator 220 to be reasonably arranged according to actual situations so as to shorten the distance between the two, and promote miniaturization of the light source device.
The rotation track 244 formed by the light source module 240 in the rotation process may be circular, and the diameter of the rotation track 244 is greater than or equal to the dimension of the diagonal line of the light incident surface 222, so that the rotation track 244 may cover the light incident surface 222, as shown in fig. 3 or fig. 4, and the light source module 240 may rotate for an integer multiple of the number of turns in a frame time to achieve the effect that the emitted light can irradiate to each position in the light incident surface 222.
The number of the light emitting units 242 of the light source module 240 may be reduced as much as possible while ensuring that the rotation locus 244 of the light source module 240 covers the light incident surface 222. For example, as shown in fig. 4, the light emitting units 242 of the light source module 240 may be distributed at intervals along the radial direction of the rotation track 244 of the light source module 240, and the rotation center of the light source module 240 may correspond to the center of the light incident surface 222, so that the light source module 240 effectively reduces the number of the light emitting units 242, thereby helping to reduce the cost of the light source module 240 and promoting miniaturization of the light source module 240.
The light source module 240 is rotated to make the light emitting units 242 at different positions relative to the light incident surface 222, and the light source module 240 can make at least a part of light emitted by the light emitting units 242 at each time interval in the rotation process to be irradiated to the light incident surface 222, for example, the light source module 240 is selectively in a first state or a second state by rotation, as shown in fig. 4, all the light emitting units 242 of the light source module 240 in the first state are located in a first area, the light emitted by the light emitting units 242 located in the first area are irradiated to the light incident surface 222, as shown in fig. 5, a part of the light emitting units 242 of the light source module 240 in the second state are located in the first area and another part of the light emitting units 242 located in the second area are located in the second area, and the light emitted by the light emitting units 242 located in the first area are not irradiated to the light incident surface 222. Since each light emitting unit 242 emits light independently, and the light emitting intensity of each light emitting unit 242, which irradiates the light incident surface 222, is controlled independently, the local dimming effect of the light source device 200 can be achieved, and the number of the light emitting units 242 is reduced compared to that of the linear array lamp beads, thereby contributing to the reduction of the cost of the light source device 200 and the promotion of the miniaturization of the light source device 200. In the case of realizing the local dimming effect, the light emitting unit 242 in the second region may also be controlled to be turned off to save power.
Referring to fig. 1, the wavelength conversion device 280 is located on an outgoing light path of the light source module 240, and light emitted by the light source module 240 is outgoing through the wavelength conversion device 280. The wavelength conversion device 280 includes a wavelength conversion region 281 and a non-wavelength conversion region 283, the wavelength conversion region 281 being configured to convert the light beam emitted from the light emitting unit 242 into the laser light, and the non-wavelength conversion region 283 being configured to scatter and/or transmit the light beam emitted from the light emitting unit 242. The wavelength converting region 281 and the non-wavelength converting region 283 sequentially enter the light beam emitting path of the light source module 240. The light source module 240 performs a rotation motion to make the light beams emitted from the light emitting units 242 irradiate different positions of the wavelength conversion region 281 or the non-wavelength conversion region 283, and since each light emitting unit 242 can emit light beams independently, the intensity of the light beams emitted from each light emitting unit 242 can be controlled independently, so that the local dimming effect of the light source device 200 can be achieved, and compared with the linear array lamp beads, the number of the light emitting units 242 is effectively reduced, thereby helping to reduce the cost of the light source module 240 and promoting the miniaturization of the light source module 240.
The total number of wavelength-converting regions 281 and non-wavelength-converting regions 283 is M, and wavelength-converting device 280 includes at least one wavelength-converting region 281 and at least one non-wavelength-converting region 283, then M is a positive integer greater than or equal to 2. The wavelength conversion region 281 and the non-wavelength conversion region 283 are collectively referred to as a partition of the wavelength conversion device 280. For example, in the present embodiment, M is 3, the wavelength conversion device 280 includes 3 partitions, the 3 partitions are distributed in a ring shape, the area of each partition may be equal, and the area of each partition is greater than or equal to the area of the rotation track 244 formed by the light source module 240.
The wavelength conversion device 280 may be a transmissive wavelength conversion device. The wavelength conversion device 280 is provided with a wavelength conversion material layer, which may at least partially convert the excitation light into laser light if the light emitted by the light emitting unit 242 is referred to as the excitation light. Wherein excitation light is a relative concept to laser light, which means light capable of exciting the wavelength converting material layer such that the wavelength converting material generates light of a different wavelength. The lasing means light generated by excitation of the wavelength converting material layer by stimulated luminescence. For example, blue light excites the yellow light conversion material layer to generate yellow light, and at this time, the blue light is excitation light, and the yellow light is excited. The yellow light excites the red conversion material layer to generate red light, which is the excitation light, and the red light is the laser light. The blue light excites the green light conversion material layer to generate green light, and the blue light is excitation light and the green light is laser light.
The wavelength converting material layer may be disposed within 2 zones therein. For example, in the present embodiment, the light emitting unit 242 includes a blue semiconductor laser diode, and the light emitting unit 242 emits blue laser light, and one of two partitions of the wavelength conversion device 280 is provided with a yellow light conversion material layer and the other partition is provided with a green light conversion material layer, so that the light source module 240 and the wavelength conversion material of the wavelength conversion device 280 cooperate to realize red-green light spectrum.
The wavelength converting material layer may comprise phosphorescent materials, such as phosphors, or may comprise nanomaterials, such as quantum dots, or may comprise fluorescent materials, not shown here. In one embodiment, the wavelength conversion material layer includes a fluorescent material, the excited laser light emitted by the wavelength conversion material layer is fluorescence, and since the fluorescence is incoherent light, no speckle effect exists, and the blue light is utilized to excite the fluorescent material to generate green fluorescence and red fluorescence, so that the speckle problem of human eye vision caused by the coherence of the light emitted by the light source module 240 can be avoided.
In order to adapt the wavelength of the light emitted by the light source module 240 after exiting the wavelength conversion device 280, the rotation frequency of the light source module 240 may be nM times the rotation frequency of the wavelength conversion device 280, where n is a positive integer, so that every 360/M degrees of rotation of the wavelength conversion device 280, the light source module 240 rotates n times, which is helpful for the light source module 240 to make the light emitted by the light emitting unit 242 pass through the corresponding partition according to the type of light required by the image signal. In this embodiment, if M is 3, the rotation frequency of the light source module 240 may be 3 times, 6 times, or 9 times the rotation frequency of the wavelength conversion device 280.
The rotation direction of the wavelength conversion device 280 may be the same as or opposite to the rotation direction of the light source module 240. In the case where the rotation frequency and rotation direction of the wavelength conversion device 280 and the light source module 240 are not changed, the scanning track of the light emitted from each light emitting unit 242 of the light source module 240 to the respective sections of the wavelength conversion device 280 is not changed.
For example, when the rotation frequencies of the wavelength conversion device 280 and the light source module 240 remain unchanged and the rotation directions D1 of the two are the same, the scanning track 284 of the wavelength conversion device 280 irradiated by the light emitted by the light emitting unit 242 of the light source module 240 is the same as the scanning track 284 of the three sections of the wavelength conversion device 280 as shown in fig. 12.
For example, the rotation frequencies of the wavelength conversion device 280 and the light source module 240 remain unchanged, the rotation direction D1 of the wavelength conversion device 280 and the rotation direction D2 of the light source module 240 may be opposite, and the scanning track 286 of the wavelength conversion device 280 irradiated by the light emitted by the light emitting unit 242 of the light source module 240 is the same as the scanning track 286 of the three sections of the wavelength conversion device 280 as shown in fig. 13. Although the scanning trajectory 286 formed in the sub-area when the rotation directions of the wavelength conversion device 280 and the light source module 240 are opposite is different from the scanning trajectory 284 formed in the sub-area when the rotation directions of the wavelength conversion device 280 and the light source module 240 are the same, there is no influence on the light emitting effect of the light source device 100, which is helpful for the light source device 200 to set the rotation direction of the wavelength conversion device 280 to be the same as or different from the rotation direction of the light source module 240 according to the actual situation, so that the operability of the light source device 100 can be improved.
Referring to fig. 6, the light source device 200 may further include a processor 260, and the processor 260 may be electrically connected to the light source module 240. The processor 260 has a plurality of functional modules built therein, and the different functional modules cooperate with each other and realize the operation of the light source device 200 together. In some embodiments, the processor 260 may be manufactured as a separate device, apparatus, etc. and communicate signals with the light source module 240 in a wired manner. In other embodiments, the processor 260 may be integrated with the light source module 240.
The processor 260 controls the light emitting units 242 of the light source module 240 to emit light based on the image signal, for example, the processor 260 may control the light emitting units 242 located in the first area to emit light according to the image signal, and the processor 260 may control the light emitting units 242 located in the first area to emit light in various manners, for example, the processor 260 may control the brightness of the light emitting units 242 located in the first area at different timings according to the image signal, or the processor 260 may control the brightness of the light emitting units 242 located in different positions of the first area according to the image signal. In addition, the processor 260 may control the light emitting unit 242 located in the second region to be turned off according to the image signal. The image signal may be image information of an image to be projected, and the processor 260 may determine the corresponding light emitting unit 242 in the light source module 240 according to the image signal, and adjust the light emitting unit 242, for example, may make the light emitting unit 242 light up, light down, increase or decrease the light emitting intensity, and so on.
For example, as shown in fig. 7, a light spot irradiated to the light incident surface 222 by a light emitting unit 242 in the light source module 240 has a length L and a width H, the rotation radii corresponding to four vertexes of the light spot are r1, r2, r3, r4, and the linear velocities corresponding to the four vertexes of the light spot are v1, v2, v3, v4. Since each light emitting unit 242 in the light source module 240 is fixed at the position of the light source module 240, the processor 260 can determine the light emitting unit 242 corresponding to the light spot in the light source module 240 according to the above parameters of the light spot, so that the light emitting unit 242 can be controlled, for example, the light emitting unit 242 can be turned on, turned off, and the light emitting intensity can be increased or decreased.
For example, the processor 260 can control at least a portion of the light emitting units 242 of the light source module 240 to emit light to irradiate the light incident surface 222 according to the image signal, so as to provide the required light for the specific position 224 of the light incident surface 222 of the spatial light modulator 220, as shown in fig. 8.
The processor 260 may adjust the time of the light irradiated to the light incident surface 222 to stay on the light incident surface 222 by controlling the rotation frequency of the light source module 240 to achieve the brightness of the light emitting units 242 located at different positions of the first area or the brightness of the light emitting units 242 located in the first area at different time sequences, since the illuminance of the light irradiated to the light incident surface 222 is related to the time and the light intensity where the light stays, the longer the time of the light stay within a certain time range, the greater the illuminance of the light, so that the illuminance control of the light can be achieved. For example, as shown in fig. 9, in the specific position 224 of the light incident surface 222, the light emitting unit 242 can realize the gradual change of the illuminance of the light along the rotation direction, compared with the linear array of the light beads, which can only realize the stepwise change of the illuminance of the light, the light source module 240 is added to provide the light effect for the spatial light modulator 220.
The processor 260 may further control the other part of the light emitting units 242 of the light source module 240 that do not irradiate to the light incident surface 222 to be turned off according to the image signal, as shown in fig. 10, since the light that does not irradiate to the light incident surface 222 is not modulated by the spatial light modulator 220, the power consumption of the light source device 200 can be reduced by turning off the other part of the light emitting units 242, and the effect of saving power is achieved.
Referring to fig. 11, the light source device 200 may further include a collimating lens group 210, where the collimating lens group 210 is located on an outgoing light path of the wavelength conversion device 280, and the light outgoing from the wavelength conversion device 280 is collimated by the collimating lens group 210 and then outgoing.
In one embodiment, the collimating lens group 210 and the wavelength conversion device 280 are disposed at intervals, and the collimating lens group 210 rotates in synchronization with the light source module 240. The collimating lens group 210 and the light source module 240 may have similar shape structures, for example, the collimating lens group 210 is a rotating lens group, and the rotation axis of the collimating lens group 210 coincides with the rotation axis of the light source module 240. The collimating lens group 210 includes a plurality of collimating lenses, the plurality of collimating lenses are distributed at intervals along the radial direction of the rotation track of the collimating lens group 210, and the collimating lens group 210 is generally in a strip structure, so that each collimating lens is used for collimating the light emitted by the corresponding light emitting unit 242, and since the collimating lens group 210 does not need to be provided with a plurality of collimating lenses to cover the whole wavelength conversion device 280, the light emitted by the light emitting unit 242 can still be collimated, which is helpful for simplifying the structure of the collimating lens group 210 and reducing the cost of the collimating lens group 210.
In another embodiment, as shown in fig. 14, the collimating lens group 210 is attached to the light-emitting surface of the wavelength conversion device 280 facing away from the light source module 240, and a plurality of collimating lenses in the collimating lens group 210 may be adhered to each partition of the transmissive wavelength conversion device by an optical adhesive, for example, the collimating lenses may be adhered to positions in the partition corresponding to the positions forming the scanning tracks, so that the space between the collimating lens group 210 and the wavelength conversion device 280 is reduced, so that the collimating lens group 210 and the wavelength conversion device 280 are more compact, thereby contributing to promoting miniaturization of the light source device 200.
The light source device 200 may further include a light equalizing component 230, where the light equalizing component 230 is located on an outgoing light path of the collimating lens group 210, and the light outgoing from the collimating lens group 210 is outgoing after being homogenized by the light equalizing component 230. For example, the light homogenizing module 230 may include a diffusion film 232 and a microlens array module 234, so that the light emitted by the light emitting unit 242 is homogenized by the diffusion film 232 and then is spliced to have uniform illuminance by the microlens array module 234, as shown in fig. 14, since the microlens array module 234 includes a plurality of microlenses 235, the light can be better polymerized, which is helpful for the illuminance of the light to be uniformly irradiated on the light incident surface 222 of the spatial light modulator 220.
The light source device 200 may further include a prism group 250, and the prism group 250 may be disposed between the light source module 240 and the spatial light modulator 220 to adjust a propagation path of light. The prism set 250 may include a plurality of lenses, for example, in this embodiment, the prism set 250 includes two prisms that cooperate to form an approximately square structure. The prism group 250 is located on the outgoing light path of the light source module 240, and the prism group 250 guides the light emitted by the light source module 240 to the spatial light modulator 220, so that the relative positions between the spatial light modulator 220 and the light source module 240 are compactly arranged, and miniaturization of the light source device 200 is promoted.
Referring to fig. 15, the embodiment of the present application further provides a projection apparatus 1000, where the projection apparatus 1000 may be a cinema projector, an engineering projector, a mini-projector, an educational projector, a wall-splicing projector, a laser television, etc.
The projection apparatus 1000 includes the spatial light modulator 220 and the light source device 200 according to any of the above embodiments, where the spatial light modulator 220 includes the light incident surface 222, and the light source module 240 rotates to make the light emitting units 242 at different positions with respect to the light incident surface 222, and makes at least a portion of the light emitted by the light emitting units 242 incident on the light incident surface 222. The projection lens 400 may further include a projection lens 400, where the projection lens 400 receives light emitted from the light source device 200 and projects the light. For example, the light emitting unit 242 of the light source module 240 emits light, which can be sequentially irradiated to the spatial light modulator 220 through the wavelength conversion device 280, the collimating lens group 210, the diffusion film 232, the micro lens array module 234 and the prism group 250, and the light is modulated by the spatial light modulator 220 and then projected out of the projection device 1000 through the prism group 250 and the projection lens 400.
In the projection device 1000 provided by the embodiment of the application, the light source module 240 is provided with the plurality of light emitting units 242 arranged in a strip structure at intervals, the wavelength conversion device 280 comprises the wavelength conversion region 281 and the non-wavelength conversion region 283, the wavelength conversion region 281 is used for converting the light beams emitted by the light emitting units 242 into the laser, the wavelength conversion region 281 and the non-wavelength conversion region 283 sequentially enter the light emitting paths of the light source module 240, the light source module 240 performs rotary motion so that the light beams emitted by the light emitting units 242 irradiate different positions of the wavelength conversion region 281 or the non-wavelength conversion region 283, and as each light emitting unit 242 can independently emit the light beams, the intensity of the light beams emitted by each light emitting unit 242 is independently controlled, the local dimming effect of the light source device 200 can be realized, and compared with the linear array lamp beads, the number of the light emitting units 242 is effectively reduced, thereby being beneficial to reducing the cost of the light source module 240 and promoting the miniaturization of the light source module 240.
In the present application, the terms "mounted," "connected," "secured," and the like are to be construed broadly unless otherwise specifically indicated or defined. For example, the connection may be fixed connection, detachable connection, or integral connection, mechanical connection, electrical connection, direct connection, indirect connection via an intermediate medium, communication between two elements, surface contact only, or surface contact connection via an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for understanding as a specific or particular structure. The description of the terms "some embodiments," "other embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In the present application, the schematic representations of the above terms are not necessarily for the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples of the present application and features of various embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing embodiments are merely for illustrating the technical aspects of the present application, and not for limiting the same, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical aspects described in the foregoing embodiments may be modified or substituted for some of the technical features thereof, and that the modification or substitution does not depart from the spirit and scope of the technical aspects of the embodiments of the present application.
Claims (12)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010785607.0A CN114063374B (en) | 2020-08-06 | 2020-08-06 | Light source device and projection equipment |
| PCT/CN2021/110776 WO2022028511A1 (en) | 2020-08-06 | 2021-08-05 | Light source apparatus and projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010785607.0A CN114063374B (en) | 2020-08-06 | 2020-08-06 | Light source device and projection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114063374A CN114063374A (en) | 2022-02-18 |
| CN114063374B true CN114063374B (en) | 2025-01-07 |
Family
ID=80120040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010785607.0A Active CN114063374B (en) | 2020-08-06 | 2020-08-06 | Light source device and projection equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN114063374B (en) |
| WO (1) | WO2022028511A1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865784A (en) * | 2011-10-26 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Projection light source and projector employing same |
| CN105045025A (en) * | 2015-09-02 | 2015-11-11 | 纳晶科技股份有限公司 | Projection light source equipment and projection device with projection light source equipment and light spot movement control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3989302B2 (en) * | 2002-05-24 | 2007-10-10 | オリンパス株式会社 | Illumination device and projector device |
| JP2006343500A (en) * | 2005-06-08 | 2006-12-21 | Olympus Corp | Light source device and projection optical device |
| CN103430553B (en) * | 2011-03-14 | 2016-08-31 | 杜比实验室特许公司 | Display device and method for generating images |
| CN207842789U (en) * | 2017-12-25 | 2018-09-11 | 上海小糸车灯有限公司 | Automobile signal light and automobile |
| CN110955104B (en) * | 2018-09-26 | 2023-03-24 | 深圳光峰科技股份有限公司 | Light source system and projection system |
-
2020
- 2020-08-06 CN CN202010785607.0A patent/CN114063374B/en active Active
-
2021
- 2021-08-05 WO PCT/CN2021/110776 patent/WO2022028511A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865784A (en) * | 2011-10-26 | 2015-08-26 | 深圳市光峰光电技术有限公司 | Projection light source and projector employing same |
| CN105045025A (en) * | 2015-09-02 | 2015-11-11 | 纳晶科技股份有限公司 | Projection light source equipment and projection device with projection light source equipment and light spot movement control method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022028511A1 (en) | 2022-02-10 |
| CN114063374A (en) | 2022-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101623004B1 (en) | Light source unit and projector | |
| JP5605047B2 (en) | Light source device and projection display device using the same | |
| US8911092B2 (en) | Illuminating device, projecting device, and method for controlling projecting device | |
| KR101737244B1 (en) | Illumination device, projector, and illumination method | |
| US8870387B2 (en) | Light source control device, projector, and light source control method | |
| US9081268B2 (en) | Lighting device and projection-type display apparatus including lighting device | |
| US20110211333A1 (en) | Wavelength Conversion | |
| US20190086779A1 (en) | Illumination system and projection apparatus | |
| WO2012002254A1 (en) | Light source device and lighting device | |
| JP2012008549A (en) | Light source device and illuminating device using the same, and image display device | |
| US20200073218A1 (en) | Light source device and projection display apparatus | |
| JP2016051072A (en) | Light source device and projector having light source device | |
| JP7567403B2 (en) | Light source device, image projection device, and light source optical system | |
| CN101447646B (en) | Light source device, lighting device, monitoring device, and image display apparatus | |
| JP2014186080A (en) | Light source device and projection video display device | |
| CN217689745U (en) | Light source device and projector | |
| CN114594652B (en) | Light source device and projection device | |
| JP7732314B2 (en) | Light source device and projection device | |
| CN111338165B (en) | Light source system and control method thereof, display device and control method thereof | |
| TWI716566B (en) | Light source device and projection display device | |
| CN114072729B (en) | Light source device, projector, and light intensity distribution uniformizing method | |
| CN114063374B (en) | Light source device and projection equipment | |
| JP2004157225A (en) | Projector and image projection method therefor | |
| JP2023024245A (en) | Wave conversion plate, light source device, and image projector | |
| JP2019090863A (en) | Light source device, and projector using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |