WO2020253413A1 - 一种激光投影设备 - Google Patents

一种激光投影设备 Download PDF

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Publication number
WO2020253413A1
WO2020253413A1 PCT/CN2020/089092 CN2020089092W WO2020253413A1 WO 2020253413 A1 WO2020253413 A1 WO 2020253413A1 CN 2020089092 W CN2020089092 W CN 2020089092W WO 2020253413 A1 WO2020253413 A1 WO 2020253413A1
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WO
WIPO (PCT)
Prior art keywords
light
side wall
cover
light pipe
projection device
Prior art date
Application number
PCT/CN2020/089092
Other languages
English (en)
French (fr)
Other versions
WO2020253413A9 (zh
Inventor
石龙飞
候乃文
Original Assignee
青岛海信激光显示股份有限公司
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Publication of WO2020253413A1 publication Critical patent/WO2020253413A1/zh
Publication of WO2020253413A9 publication Critical patent/WO2020253413A9/zh

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    • 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
    • H04N9/3111—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources
    • H04N9/3114—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying the colours sequentially, e.g. by using sequentially activated light sources by using a sequential colour filter producing one colour at a time
    • 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
    • G03B21/2053—Intensity control of illuminating light
    • 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
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • 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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3155—Modulator illumination systems for controlling the light source
    • 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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3158—Modulator illumination systems for controlling the spectrum
    • 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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • H04N9/3161—Modulator illumination systems using laser light sources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/64—Constructional details of receivers, e.g. cabinets or dust covers

Definitions

  • This application relates to the field of laser projection technology, and in particular to a laser projection device.
  • the mainstream projection display technology mainly includes: liquid crystal display (LCD), silicon-based Liquid crystal (liquid crystal on silicon, LCOS) and digital light processing (digital light processing, DLP) three types; among them, DLP uses the reflection of light to modulate image information, which has high image clarity, uniform image, and energy efficiency High, high output brightness and other advantages, so it is widely used in the field of projection display technology.
  • LCD liquid crystal display
  • LCOS silicon-based Liquid crystal
  • DLP digital light processing
  • the equipment applying DLP mainly includes three parts: light source system, opto-mechanical system and lens system; the light source system is used to provide the illumination beam, which has a direct impact on the energy efficiency and uniformity of the entire device; the lens system determines the resolution of the projection system , Distortion and other indicators; on the one hand, the opto-mechanical system needs to collect the illumination beam emitted by the light source system and transfer the collected beam to the lens system to the maximum; on the other hand, it needs to reshape and modulate the collected beam, and finally achieve Energy transmission with high efficiency, high brightness and high uniformity.
  • the core component is a light valve.
  • the light valve is a DMD digital micro-mirror array. Since the light valve has the requirements for the incident angle and distribution of the light beam illuminating it, the light path components before the light valve are required
  • the illumination beam is homogenized and shaped according to the beam requirements of the light valve to meet the incident requirements.
  • the light path before the light valve includes a light homogenizing device, whose function is to homogenize the energy distribution and shape the light spot transmitted by the front-end optical system to achieve the maximum energy collection and uniform distribution.
  • the light pipe is a common component in the light homogenization device. When the light beam enters the light pipe, it will undergo multiple reflections, and finally a superposition effect of multiple light sources is formed at the exit end, thereby achieving the homogenization of the light beam.
  • the light pipe Since the light pipe has the functions of energy collection and beam homogenization of the illumination beam in the front-end light source system, and needs to be accurately matched with the digital micromirror device (DMD), the position accuracy of the light pipe is required to be high, so how Improving the position accuracy when installing the light guide has become an urgent technical problem to be solved by those skilled in the art.
  • DMD digital micromirror device
  • This application provides a laser projection equipment, including a light source system for providing an illuminating light beam; an opto-mechanical system, including an opto-mechanical housing, a light pipe, and a light valve.
  • the light pipe collects the illuminating light beam and homogenizes the output to the light valve.
  • the light valve modulates and outputs the light beam, and the lens system is used to receive and image the modulated light beam;
  • the first end of the light pipe is connected to the light source system, the light beam output from the second end of the light pipe is incident on the light valve, and the light pipe is adjustably arranged on the optical engine housing.
  • FIG. 1 is a schematic structural diagram of a laser projection device provided by an embodiment of the application.
  • FIG. 2 is a schematic diagram of an exploded structure of a laser projection device provided by an embodiment of the application.
  • FIG. 3 is a schematic diagram of the optical path architecture of the laser projection device provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of an optical machine housing of a laser projection device provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of an exploded structure of a bracket assembly provided by an embodiment of the application.
  • Fig. 6 is a schematic diagram of another optical engine housing provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of an exploded structure of FIG. 4;
  • FIG. 8 is a schematic structural diagram of a light pipe provided by an embodiment of the application.
  • Figures 9-1 and 9-2 are schematic views of the structure of the cover provided by the embodiments of the application from different perspectives;
  • FIG. 10 is a schematic structural diagram of an elastic component provided by an embodiment of the application.
  • FIG. 11 is a schematic structural diagram of a baffle provided by an embodiment of the application.
  • FIG. 12 is a schematic diagram of a partial cross-sectional structure of a lighting system provided by an embodiment of the application.
  • 100-light source system 110-laser; 120-light source optical path; 121-fluorescent wheel;
  • 210-optical machine housing 211-optical machine port; 216-first supporting wall, 217-second supporting wall; 2110 fixing structure; 218-fixing hole;
  • 230-Cover body 231-first end; 232-second end; 233-first side wall; 234-second side wall; 235-third side wall; 236-fourth side wall; 237-elastic tongue depressor ; 238- gap; 2301- resisting part; 2302- injection port; 2351-inclined surface;
  • FIG. 1 is a schematic diagram of the overall arrangement of the laser projection device
  • FIG. 2 is a schematic diagram of an exploded structure of an optical engine part.
  • the laser projection device includes a light source system 100, an optical machine system 200, and a lens system 300; specifically, the light source system 100 includes a laser 110 and a light source optical path at the back end of the laser 110 optical path. Wherein, the light source system 100 is used to emit an illuminating beam.
  • the light source system 100 usually includes a laser component.
  • the illuminating beam may be a pure three-color laser beam or a mixed beam of laser and fluorescent light.
  • the light source system 100 can output the three primary colors sequentially.
  • the core component of the optical machine system 200 is a light valve.
  • the light valve is a DMD digital micromirror array device. There are thousands of small mirrors on the surface, the size is usually a few tenths of an inch. Under such a small size, the light beam emitted by the light source system 100 needs to be modulated and reflected by the driving signal corresponding to the image display signal. Get out.
  • the lens system 300 is used for receiving the light beam modulated by the light valve and projecting the image.
  • the lens system 300 in the laser projection device shown in FIGS. 1 and 2 is an ultra-short throw projection lens.
  • FIG. 3 is a schematic diagram of a projection optical architecture provided by some embodiments of the application.
  • the light source system may specifically include a laser 110 and a rear light source light path 120, where the laser 110 emits laser light, a part of the laser light can be used for excitation light, and a part is used to provide primary color light of the three primary colors.
  • the light source light path 120 may include a fluorescent wheel 121, which is a wavelength conversion component that uses laser excitation light to perform wavelength conversion and emits light of other primary colors that are different from the laser excitation light.
  • the light source optical path 120 usually also includes a first lens assembly (not shown in the figure) to converge, shape, etc. the light emitted by the laser 110 deal with.
  • the optical machine system 200 receives the light beam of the front-end light source system 100 for modulation, and then enters the lens system 300.
  • the lens system 300 includes a second lens assembly, which is an imaging lens group. The light passes through the lens system 300 and exits the laser projection device to present a projected image. Picture.
  • the homogenization component is a light pipe, also called a light rod, or a light tunnel.
  • the light pipe is a component that uses multiple reflection superposition to achieve beam homogenization.
  • the light pipe can be a solid light pipe or a hollow light pipe. That is, the light pipe can be formed by enclosing the side walls and is a hollow part.
  • the light pipe is a hollow structure.
  • the light pipe 220 is first used as a light collection component for docking with the light source system.
  • the light beams of the three primary colors of the light source system are incident on the light pipe sequentially.
  • the illumination light beam output by the light source system needs to meet the requirements of this angle range in order to transmit energy as high as possible.
  • this angle range is controlled at plus or minus 23 degrees, or plus or minus 18 degrees. Therefore, in order to improve the transmission efficiency of the illumination beam, the entrance end of the light pipe and the light source system need to be precisely aligned and connected.
  • the laser beam After the laser beam passes through the light source optical path 120, it enters the light pipe 220 of the optomechanical system 200 to homogenize and reshape the light so that the reshaped light can match the contour of the digital micromirror element, that is,
  • the output light beam at the exit end of the light pipe is provided to the DMD digital micromirror device.
  • the positioning accuracy of the light pipe 220 determines the quality of the light incident on the digital micromirror device, such as the light effect and the uniformity of energy distribution.
  • the positioning accuracy of the light pipe 220 can be quickly adjusted, so as to improve the quality of light entering the digital micromirror element, while also taking into account the light transmission efficiency from the light source system.
  • Figure 4 shows a schematic diagram of an optical-mechanical system structure.
  • the optical machine system 200 includes a housing 210 in which a plurality of optical components are accommodated, including a light pipe 220, and the light pipe 220 is fixedly connected to the optical machine housing 210 through a plurality of structural members.
  • the optical machine system 200 further includes an optical machine port 211, which is used for docking with the light source system, so that the light pipe 200 can receive the illuminating light beam output by the light source system.
  • Fig. 5 shows a schematic diagram of an exploded structure of a light pipe assembly.
  • the bracket assembly for fixing the light pipe 220 includes a cover 230, an elastic member 240, and a corresponding screw assembly 260.
  • the light pipe 200 is first installed in the cover 230, and then fixed to the corresponding position of the light machine housing by the elastic member 240 and the screw assembly 260.
  • the optical machine housing 210 has a groove structure or an opening structure for accommodating the light pipe 220, and the light pipe 220 is fixed there.
  • the fixed position is close to the connecting end of the optical machine system and the light source system, so that the light pipe
  • the first end of the 200 also called the entrance end, can be connected to the light source system to collect the mixed white light output by the light source system.
  • the second end of the light pipe 220 also called the outlet end, faces the light valve, and specifically connects with the illumination light path before the light valve, and the illumination light path is used to shape the light beam output from the light pipe to meet the incident requirements of the light valve.
  • Fig. 6 is a schematic diagram of an optical machine housing provided by some embodiments of the application, without the light pipe assembly installed.
  • the optical engine housing 210 includes a first supporting wall 216 for installing the light pipe assembly, the supporting wall is a bottom wall, and a second supporting wall 217, which is a side wall, The first supporting wall 216 and the second supporting wall 217 are vertically arranged, which matches the vertical relationship of the adjacent side walls of the light pipe assembly.
  • fixing structures 2110 on the side of the first supporting wall 216 Specifically, there are two fixing structures 2110, and there are also fixing structures 2110 on the side of the second supporting wall 217. Specifically, there are two fixing structures 2110.
  • the plurality of fixing structures 2110 are used for the elastic member 240 in the light pipe assembly, and the elastic member 240 is structured to press and fix the cover body with the light pipe on the first supporting wall 216 and the second supporting wall of the optical engine housing. Lean against the wall 217. And, in order to position the light pipe assembly more reliably, a front end supporting structure 219a, a side end supporting structure 219b, and a bottom end supporting structure 219c are respectively provided near the light entrance port 211 of the optical engine housing, specifically ,
  • These multiple supporting structures can be a supporting platform structure, in which the front supporting structure 219a, the side supporting structure 219b, and the bottom supporting structure 219c are arranged at 90 degrees perpendicular to the light pipe. The components are matched with the cuboid three-dimensional structure to ensure the precise support of the light pipe components.
  • the entrance end of the light pipe assembly is supported on the above-mentioned three supporting structures, so that the light pipe assembly is restricted on three surfaces, and the supporting is more stable.
  • a fixing hole 218 is further provided in the direction of the first supporting wall 216 and the second supporting wall 217 away from the light entrance port 211 of the optical engine housing, and the fixing hole 218 is specifically a screw fixing hole.
  • the fixing hole is a through hole penetrating the housing of the optical engine, which is used to install the adjusting screw 271 and the adjusting screw 272 as shown in FIG. 12.
  • the adjusting screw can be installed from the outside of the optical engine housing without disassembling the optical engine.
  • the machine casing prevents dust from falling into the casing and affects the fixing of other parts inside the casing; at the same time, it can be adjusted from the outside of the optical machine casing, which improves the convenience of adjustment.
  • fixing holes 218, which are through holes penetrating the housing of the optical machine. They are respectively located on the first supporting wall 216 and the second supporting wall 217 near the light outlet end of the light pipe assembly, and can be used to adjust the light pipe. The position of the light exit port of the component.
  • the light inlet end of the light pipe is fixed by supporting the housing of the optical machine, and the light outlet end of the light pipe can be adjusted, so that under the premise of ensuring light collection efficiency, the light outlet can be changed by The position affects the size and angle of the light spot incident on the light valve.
  • the shape of the light outlet of the light pipe is rectangular, and the light incident surface of the light valve is also rectangular.
  • the aspect ratio of the rectangular light outlet of the light pipe is the same as that of the light valve surface, but the size is different. Therefore, the light spot emitted from the light outlet of the light pipe directly affects the parameters of the light spot incident on the surface of the light valve.
  • FIG. 7 is a schematic diagram of the exploded structure of the light pipe assembly and the optical engine housing in some embodiments of the application.
  • the light pipe 200 is sleeved in the cover 230, and the elastic pressing member 240 is used to press the cover 230 with the light pipe on the two sides of the optical engine housing.
  • the screw assembly 260 is used to fix the elastic member 240 to the fixing structure 2110 on the optical engine housing.
  • the light guide is adjusted indirectly by adjusting the cover 230.
  • the adjusting screw installed at the fixing hole 218 directly acts on the surface of the cover 230 to push the spatial position of one end of the cover to change, thereby Drive the position of the light pipe to change.
  • the light pipe 220 is fixed on the inner side of the cover 230, and the cover is made of hard material, which can protect the light pipe 220 well; connect one end of the light pipe 220 to the optical engine housing
  • the light entrance port is supported and fixed by multiple supporting structures, which can make the end side of the light pipe 200 difficult to move or shake, thereby ensuring that the beam position of the receiving light source system is not easily shifted, so that the light collection efficiency can be obtained
  • the cover 230 is adjustably arranged on the housing 210, the position of the light pipe 220 can be adjusted quickly, thereby ensuring the positioning accuracy between the light pipe 220 and the housing 210;
  • the position adjustment of the light outlet end of 230 can change the position and angle of the light beam emitted from the light pipe, thereby affecting the incident angle and spot size of the light beam incident on the surface of the light valve.
  • FIG. 8 is a schematic structural diagram of multiple angles of a light pipe provided by an embodiment of the present application.
  • the light pipe 220 is usually a hollow glass tube with a rectangular cross section and a rectangular side surface. Because it is a hollow structure, its strength is weak, and it is prone to damage when subjected to external forces.
  • the light pipe 220 is installed and fixed on the inner side of the protective cover, so that the light pipe 220 can be protected by a cover.
  • the protective cover may be Hollow metal frame for holding glass light pipes.
  • FIGS. 9-1 and 9-2 are schematic diagrams of the structure of the protective cover provided by the embodiments of the application.
  • the cover 230 since the light pipe is usually a glass tube with a rectangular cross-section, the cover 230 correspondingly has a cylindrical structure with a rectangular cross-section.
  • the cover 230 has a first end 231 and a second end 232, both ends of which are open structures.
  • the first end 231 of the cover 230 is provided with a notch 238.
  • part of the side wall of the light pipe 220 can pass through the opening 238 and directly contact the inner wall of the optical machine housing 210. Abutment, this direct abutment is beneficial to ensure the positioning accuracy between the light pipe 220 and the optical engine housing 210.
  • the gap is formed by cutting away part of the side walls on two adjacent surfaces at the first end of the cover 230.
  • the notch 238 is located on the first side wall 233 and the second side wall 234 of the cover.
  • the first side wall 233 is along the The paper faces outwardly
  • the second side wall 234 is a side wall vertically adjacent to the first side wall 233.
  • the cover 230 has a third side wall 235 and a fourth side wall 236, wherein the first side wall 233 is adjacent to the second side wall 234, the third side wall 235 is opposite to the first side wall 233, and the fourth side wall 235 is opposite to the first side wall 233.
  • the side wall 236 is opposite to the second side wall 234.
  • the cover 230 also has an elastic pressing tongue 237,
  • the elastic depressing tongue 237 is usually multiple and distributed on at least two adjacent surfaces, and the elastic depressing tongue is bent inward.
  • the elastic pressing tongue 237 elastically abuts against the outer wall of the light pipe 220, and drives the light pipe 220 to closely adhere to the inner wall corresponding to the elastic pressing tongue 237, thereby lifting the light pipe 220 Positioning accuracy with the cover 230.
  • the inner side of the third side wall 235 and the fourth side wall 236 of the cover 230 are both provided with the elastic pressing tongue 237, so that the light pipe
  • the outer wall of 220 can be in close contact with the inner walls of the first side wall 233 and the second side wall 234.
  • the elastic depressing tongue 237 may be an elastic arm structure bent toward the inner side of the cover 230, and this structure can be integrally formed with the cover 230, which can reduce the manufacturing difficulty and cost of the cover 230.
  • the second end 232 of the cover 230 has a blocking portion 2301 for preventing the light pipe 220 from being inserted from the first end 231 from the second The end 232 slides out, so the blocking portion 2301 can be used for limiting, which can improve the positioning accuracy between the light pipe 220 and the cover 230 in the length direction thereof.
  • the light pipe 220 can be extended from the first end 231 of the cover 230 into the cover 230.
  • the second end of the light pipe 220 will abut against the blocking portion 2301 of the cover 230 to prevent The light pipe 220 slides out from the second end 232 of the cover 230.
  • the cover 230 is also provided with a glue injection hole 2302; specifically, as shown in FIG. 9-2, The glue injection hole 2302 is provided on the first side wall 233 and the second side wall 234 of the cover body; after the light pipe 220 is installed in the cover body 230, the installer can fill the glue hole 2302 with glue to achieve The light pipe 220 and the cover 230 are bonded and fixed; thereby, the connection stability between the light pipe 220 and the cover 230 is further improved.
  • the side wall where the glue injection hole 2302 is located is opposite to the side wall where the elastic pressing tongue 237 is located.
  • the cover 230 may be a sheet metal part, and the cover can be manufactured through processes such as stamping, shearing and forming.
  • the material and manufacturing process of the cover 230 may be multiple, which is not specifically limited in this application.
  • an elastic member 240 as shown in FIG. 10 is applied.
  • FIG. 10 is a schematic structural diagram of an elastic member provided by some embodiments of the application.
  • the elastic member 240 has a first elastic claw 243 for resisting the outer side of the third side wall 235, and for contacting the The outer sides of the four side walls 236 abut against the second elastic claws 244.
  • the number of first elastic claws 243 may be at least one, usually two, and the number of second elastic claws 244 may also be at least one, usually two.
  • the elastic close contact between the elastic member 240 and the cover 230 can be realized, so as to improve the good adhesion between the cover 230 and the housing 210, and the side wall of the light pipe 220 and the optical engine housing Good adhesion between 210.
  • the cover 230 The outer side of the third side wall 235 is provided with an inclined surface 2351; the inclined surface 2351 is used to abut against the first elastic claw 243 of the elastic member 240, so that the elastic member 240 pushes the cover 230 toward the first end 231 of the cover 230.
  • the light entrance end 211 of the optical engine housing 210 is correspondingly provided with a supporting platform structure in three directions, so that when the elastic member 240 presses the cover 230 (the light pipe 200 is already installed), the light pipe 200
  • the light entrance end of the light entrance is limited at the three supporting platform structures, so as to realize the extrusion and fixation of the light entrance end.
  • the inclined surface 2351 may also be provided on the fourth side wall 236, or the inclined surface 2351 may be provided on both the third side wall 235 and the fourth side wall 236, the purpose of which is to pass the elastic claw Cooperating with oblique obstructions, it has a pushing force on the light pipe or the cover, increasing the tightness of the bearing.
  • the end of the light pipe 220 close to the first end of the cover can be in close contact with the housing 210, thereby improving the light energy collection effect.
  • the third side wall 235 has a fold that is bent toward the outside of the cover. Arm; the outer side of the folded arm forms the slope 2351.
  • the elastic member 240 includes a positioning hole 241 and a connecting hole 242.
  • the positioning hole 241 is used to achieve precise positioning with a positioning structure (not shown in the figure) on the housing 210, and then the elastic member 240 is fixed on the housing 210 through the connecting hole 242 through bolts.
  • the elastic component 240 may be a sheet metal component, and the elastic component is manufactured through processes such as stamping and shear forming.
  • the material and manufacturing process of the elastic member 240 may be multiple, which is not specifically limited in this application.
  • a baffle 250 is further included, and the baffle 250 is used to block a part of the end surface of the light entrance end of the light pipe 220.
  • the baffle 250 has an L-shaped baffle arm 251, and the baffle arm 251 is used to cover the third side wall close to the cover 230 235 and the end surface of the light pipe 220 at the fourth side wall 236; in specific implementation, please refer to FIG. 6, because the end surface of the light pipe at the first side wall and the second side wall close to the cover 230 can be set
  • the supporting stands 219a and 219b on the housing 210 are shielded. Therefore, in the embodiment provided in the present application, the blocking arm 251 has an L-shaped structure.
  • the blocking arm 251 may also have a curved structure.
  • the baffle 250 may be a sheet metal part, and the elastic part is manufactured through processes such as stamping, shearing and forming.
  • the material and manufacturing process of the baffle 250 may be multiple, which is not specifically limited in this application.
  • FIG. 11 is a schematic structural diagram of a baffle provided by an embodiment of the application.
  • the baffle 250 includes a positioning hole 252 and a connecting hole 253.
  • the positioning hole 252 is used to achieve precise positioning with a positioning structure (not shown in the figure) on the housing, and then the baffle 250 is fixed on the housing 210 through the connecting hole 253 by bolts.
  • FIG. 12 is a schematic diagram of a partial cross-sectional structure of a lighting system provided by an embodiment of the application.
  • it further includes a first adjusting screw 271 and a second adjusting screw 272 mounted on the housing 210,
  • the end of the first adjusting screw 271 abuts against the first side wall 233 of the cover 230
  • the end of the second adjusting screw 272 abuts against the second side wall 234.
  • the first side wall 233 can be moved closer to or away from the optical engine housing 210 by rotating the first adjusting screw 271
  • the second side wall 234 can be moved closer to or away from the optical engine housing 210 by rotating the second adjusting screw 272 to adjust the light pipe 220
  • the second end is the direction of the light exit end, so as to ensure the precise docking between the light spot after homogenization through the light pipe 220 and the DMD chip (not shown in the figure), and improve the position and angle of the light spot on the light valve surface.
  • the light pipe is an important optical component of the optical machine system in the laser projection equipment. It can homogenize the light beam collected from the light source system.
  • the valve has the same aspect ratio. Therefore, the light beam output by the light pipe needs to be reshaped and incident on the light valve to be modulated and output by the light valve. Therefore, the position of the light pipe not only affects the collection efficiency of light energy, which in turn affects the system light efficiency of the entire laser projection equipment.
  • the output of the light pipe directly affects the quality of the light spot received by the light valve surface, for example, if the light pipe is skewed.
  • the light spot reaching the surface of the light valve may not be rectangular, or it may not completely cover the surface of the light valve, which wastes light energy and cannot display the projected image normally.
  • the light pipes in some examples of this application are installed in a metal cover.
  • the cover can clamp the light pipe component, and the cover with the light pipe is pressed against the two perpendicular to each other of the light engine housing through an elastic member.
  • On the side wall, and the elastic clamp can directly push forward and downward toward the light entrance end of the light pipe, so that the light entrance end of the light pipe will abut and bear on the optical engine housing and pass through the light pipe.
  • the supporting platform structure in each direction is limited to prevent shaking and displacement, which ensures the light collection efficiency of the light source system.

Abstract

本申请实施例提供了一种激光投影设备，本申请提供的激光投影设备包括光源系统、光机系统和镜头系统，其中光机系统包括光机壳体、光导管以及光阀，光导管收集照明光束，并匀化输出至光阀，光阀对光束进行调制并输出，其中，光导管的第一端与光源系统对接，光导管的第二端输出的光束入射光阀；光导管可调节地设置在光机壳体上，提高了光导管定位的精确性，并兼顾了光收集效率。

Description

一种激光投影设备
本申请要求于2019年7月16日提交中国专利局、申请号为201921116630.X，申请名称为“一种激光投影设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及激光投影技术领域，尤其涉及一种激光投影设备。
背景技术
随着信息时代的到来，投影显示技术以其快速、直观的信息传递方式受到越来越多人的青睐；目前，主流的投影显示技术主要包括：液晶显示器(liquid crystal display，LCD)、硅基液晶(liquid crystal on silicon，LCOS)以及数字光处理技术(digital light processing，DLP)三种；其中，DLP是利用光的反射来调制图像信息，其具有图像清晰度高、画面均匀、能量利用率高、输出亮度高等优点，因此，在投影显示技术领域被广泛应用。
其中，应用DLP的设备主要包含光源系统、光机系统及镜头系统三个部分；光源系统用于提供照明光束，对整个设备的能量效率及均匀性有直接影响；镜头系统决定了投影系统的解析、畸变等指标；光机系统一方面需要将光源系统射出的照明光束进行收集，并将收集的光束最大限度地传递给镜头系统，另一方面需要对收集的光束进行整形并进行调制，最终实现高效率、高亮度、高均匀性的能量传输。
在光机系统中，核心部件为光阀，在DLP架构中，光阀为DMD数字微镜阵列，由于光阀对照射其上的光束具有入射角度及分布的要求，光阀之前的光路部件需要按照光阀的光束要求对照明光束进行匀化，整形，满足入射要求。其中，光阀之前的光路中包括匀光装置，其作用是将前端光学系统传递的光斑进 行能量的匀化分布和整形，实现能量最大的收集及均匀分布。其中，光导管是匀光装置中的常用部件，当光束进入光导管后会经过多次反射，最终在出口端形成多个光源的叠加效应，由此实现光束的匀化。
由于光导管，兼具前端光源系统中照明光束能量收集、光束匀化的作用以及需要与数字微镜元件(digital Micromirror device，DMD)精确匹配，所以光导管的位置精度要求较高，因此，如何提高安装光导光时的位置精度成为本领域技术人员亟待解决的技术问题。
申请内容
本申请提供了一种激光投影设备，包括光源系统，用于提供照明光束；光机系统，包括光机壳体、光导管以及光阀，光导管收集照明光束，并匀化输出至光阀，光阀对光束进行调制并输出，镜头系统，用于接收调制后的光束并成像；
其中，光导管的第一端与光源系统对接，光导管的第二端输出的光束入射至光阀，光导管可调节地设置在光机壳体上。
附图说明
图1为本申请实施例提供的激光投影设备的结构示意图；
图2为本申请实施例提供的激光投影设备的一种分解结构示意图；
图3为本申请实施例提供的激光投影设备的光路架构示意图；
图4为本申请实施例提供的激光投影设备的光机壳体示意图；
图5为本申请实施例提供的一种支架组件的分解结构示意图；
图6为本申请实施例提供的另一光机壳体示意图；
图7为图4的分解结构示意图；
图8为本申请实施例提供的光导管的结构示意图；
图9-1,9-2为本申请实施例提供的罩体不同视角的结构示意图；
图10为本申请实施例提供的弹压件的结构示意图；
图11为本申请实施例提供的挡片的结构示意图；
图12为本申请实施例提供的照明系统的局部剖面结构示意图。
附图标记：
100-光源系统；110-激光器；120-光源光路；121-荧光轮；
200-光机系统；219a,219b,219c-承靠结构；
210-光机壳体；211-光机端口；216-第一承靠壁，217-第二承靠壁；2110固定结构；218-固定孔；
220-光导管；
230-罩体；231-第一端；232-第二端；233-第一侧壁；234-第二侧壁；235-第三侧壁；236-第四侧壁；237-弹性压舌；238-缺口；2301-抵挡部；2302-注胶口；2351-斜面；
240-弹压件；241-定位孔；242-连接孔；243-第一弹性卡爪；244-第二弹性卡爪；
250-挡片；251-挡臂；252-定位孔；253-连接孔；
260-螺钉组件；
271-第一调节螺钉，272-第二调节螺钉；
300-镜头系统；
具体实施方式
为了使本领域技术人员更好的理解本申请的技术方案，下面结合说明书附图对本申请实施例进行详细的描述。
如图1和图2所示，本申请实施例提供了一种激光投影设备，图1为激光投影设备的整机排布示意图，图2为光学引擎部分的分解结构示意图。如图1所示，激光投影设备包括光源系统100、光机系统200和镜头系统300； 具体地，光源系统100包括激光器110及激光器110光路径后端的光源光路。其中，光源系统100用于发出照明光束，光源系统100通常包括激光器部件，照明光束可以为纯三色激光光束，或者为激光和荧光的混合光束。光源系统100可以时序性的输出三基色光。光机系统200的核心部件为光阀，在DLP投影架构中，光阀为DMD数字微镜阵列器件。其表面具有成千上万个小反射镜，尺寸通常在零点几个英寸，在这样小的尺寸下，需要对光源系统100发出的光束在图像显示信号对应的驱动信号驱动下进行调制，并反射出去。镜头系统300用于接收光阀调制后的光束，并投射成像。在一些实施例中，图1和图2所示的的激光投影设备中的镜头系统300为超短焦投影镜头。
图3为本申请一些实施例提供的投影光学架构示意图。在图3所示的光学架构光路中，光源系统可以具体包括激光器110和后端的光源光路120，其中激光器110发出激光，该一部分激光可用于激发光，一部分用于提供三基色中的基色光。光源光路120中可以包括荧光轮121，荧光轮121为波长转换部件，其利用激光激发光进行波长转换，发出与激光激发光颜色不同的其他基色光。由于荧光轮121的激发，需要一定的光斑尺寸和能量密度分布要求，因此光源光路120中通常还包括第一透镜组件(图中未示出)，以对激光器110发出的光线进行会聚、整形等处理。光机系统200接收前端光源系统100的光束进行调制后，进入镜头系统300，镜头系统300中包括第二透镜组件，为成像镜组，光线经过镜头系统300后射出激光投影设备，以呈现投影图像画面。
在激光投影设备中，由于光阀的尺寸很小，且对光束的入射具有严格的要求，因此，需要照明光束在照射到光阀之前，具有较高的光斑均匀性和一定的空间角度。在本实例中，匀化部件为光导管，又称光棒，或光隧道。光导管是一种利用多次反射叠加实现光束匀化的部件。
光导管可以是为实心光导管，也可以是空心的，即光导管可由侧壁围合形成，为中空部件。
在本示例中，光导管为中空结构。如图3所示，光导管220首先作为一个光收集部件，用于与光源系统对接。光源系统的三基色光束时序性的入射到光导管中。而在光收集的过程中，只有特定角度范围的光束才能够入射进入光导管，因此光源系统输出的照明光束需要满足这个角度范围要求，才能尽可能高进行能量的传递。比如，这个角度范围控制在正负23度，或者正负18度。因此，为了提高照明光束的传输效率，光导管的入口端与光源系统需要精确对位连接。
激光光束经过光源光路120后，进入到光机系统200的光导管220中，以对光线进行匀化、整形处理，以使整形后的光线能够与数字微镜元件的轮廓相匹配，也即，光导管的出口端输出光束提供给DMD数字微镜器件。其中，光导管220的定位精度决定着入射数字微镜器件中光线的质量，比如光效，能量分布均匀性。在本申请提供的实施例中，能够对光导管220的定位精度进行快速的调节，从而提升进入数字微镜元件中光线的质量，同时也能够兼顾从光源系统的光传递效率。
图4示出了一种光机系统结构示意图。如图4所示，光机系统200包括壳体210，壳体210中容纳有多个光学部件，其中包括光导管220，光导管220通过多个结构件固定连接至光机壳体210中。以及，光机系统200还包括光机端口211，光机端口211用于与光源系统对接，从而光导管200能够接受光源系统输出的照明光束。
图5示出了一种光导管组件的分解结构示意图。如图5所示，用于固定光导管220的支架组件包括：罩体230，弹压件240，以及对应的螺钉组件260。
光导管200首先安装于罩体230中，再通过弹压件240和螺钉组件260固定于光机壳体的对应位置处。螺钉组件260通常为多个。
如图4所示，光机壳体210具有容纳光导管220的凹槽结构或者开口结构，光导管220固定于该处，该固定位置处靠近光机系统与光源系统的连接端，从而光导管200的第一端，也称入口端可与光源系统对接，用于收集光源系统输出的混合白光。光导管220的第二端，也称出口端朝向光阀，并具体对接光阀之前的照明光路，该照明光路用于将从光导管输出的光束进行整形以符合光阀的入射要求。
图6为本申请一些实施例提供的光机壳体示意图，未安装光导管组件。如图6所示，光机壳体210包括用于安装光导管组件的第一承靠壁216，该承靠壁为底壁，以及第二承靠壁217，该承靠壁为侧壁，该第一承靠壁216和第二承靠壁217成垂直设置，这与光导管组件相邻的侧壁成垂直关系相匹配。以及，在第一承靠壁216侧还具有固定结构2110，具体地，固定结构2110为2个，在第二承靠壁217侧也具有固定结构2110，具体地，固定结构2110为2个，这多个固定结构2110用于光导管组件中的弹压件240，弹压件240结构用于将安装有光导管的罩体压固于光机壳体的上述第一承靠壁216和第二承靠壁217上。以及，为了更可靠的定位光导管组件，在靠近光机壳体的入光端口211处，还分别设置有前端承靠结构219a,侧端承靠结构219b,底端承靠结构219c,具体地，这多个承靠结构可以为承靠台结构，其中，前端承靠结构219a,侧端承靠结构219b,底端承靠结构219c中，两两成垂直90度设置，用于与光导管组件为长方体的立体结构相匹配，保证光导管组件的精准承靠。
以及，在一些实施例中，光导管组件的入口端承靠在上述三个承靠结构上，从而光导管组件在三个面上都的得到了限位，承靠更为稳固。
以及，如图6所示，在第一承靠壁216和第二承靠壁217远离光机壳体入光端口211的方向上还设置有固定孔218，固定孔218具体地为螺钉固定孔，该固定孔为贯穿光机壳体的通孔，其用于安装如图12所示的调节螺钉271和调节螺钉272，调节螺钉可从光机壳体的外侧安装，而不需要拆开光机 壳体，从而防止壳体内部落入灰尘以及影响壳体内部其他部件的固定；同时可从光机壳体的外侧进行调节，，提高了调节的便利性。
具体地，固定孔218为两个，为贯穿光机壳体的通孔，分别位于第一承靠壁216和第二承靠壁217上靠近光导管组件出光口端的位置，可用于调节光导管组件出光口端的位置。
在本申请实施例中，光导管的入光口端通过承靠光机壳体进行固定，光导管的出光口端可以进行调节，从而在保证光收集效率的前提下，可通过改变出光口的位置来影响入射至光阀的光斑的尺寸和角度。
在本申请实施例中，光导管出光口的形状为矩形，光阀的入光表面也为矩形，光导管出光口矩形的长宽比与光阀表面矩形的长宽比一致，但尺寸不同。从而光导管出光口的出射光斑会直接影响到入射光阀表面的光斑的参数。
图7为本申请一些实施例中的光导管组件与光机壳体的爆炸结构示意图。
以及，结合图6和图7所示，具体地，光导管200套设于罩体230内，弹压件240用于将安装有光导管的罩体230压设于光机壳体的两个侧壁上，螺钉组件260用于将弹压件240固定于光机壳体上的固定结构2110处。
在本申请的实施例中，通过调节罩体230而间接实现对光导管的调节，安装于固定孔218处的调节螺钉直接作用于罩体230表面，来推动罩体一端的空间位置变化，从而带动光导管位置变化。
本申请实施例中，光导管220固定在罩体230的内侧，罩体为硬质材料制成，能够对光导管220起到良好的保护作用；将光导管220的一端与光机壳体的入光端口通过多个承靠结构进行承靠固定，可以使得光导管200的该端侧不易发生移动或晃动，从而可以保证接收光源系统的光束位置也不易发生偏移，这样光收集效率可以得到保证或提高；将罩体230可调节地设置在壳体210上，可以快速的对光导管220的位置进行调节，从而保证了光导管 220与壳体210之间的定位精度；通过对罩体230的出光口端进行位置调节，可以使得光导管的出射光束发生位置和角度的变化，从而影响入射到光阀表面的光束的入射角度和光斑大小。
图8本申请实施例提供的一种光导管的多个角度的结构示意图。光导管220通常为中空的玻璃管，其截面为矩形，侧面也为矩形。由于为中空结构，其受力强度较弱，在遭受外力时容易产生破损现象。在本申请提供的实施例中，如图8所示，将光导管220安装固定在保护罩体的内侧，从而能够对光导管220起到罩衣保护作用，在具体实施中，保护罩体可以为中空的金属框架，用于容纳玻璃光导管。
图9-1和图9-2为本申请实施例提供的保护用罩体结构的示意图。如图9-1和9-2所示，由于光导管通常为截面呈矩形的玻璃管，对应地罩体230呈截面为矩形的筒状结构。罩体230具有第一端231，第二端232，两端均为开口结构。其中罩体230的第一端231设置有缺口238，将光导管220安装在光机壳体210上时，光导管220的部分侧壁能够透过该开口238直接与光机壳体210的内壁抵接，这种直接的抵接利于保证光导管220与光机壳体210之间的定位精度。该缺口是通过在罩体230的第一端将两个相邻面上的部分侧壁切去而形成。
具体的，如图9-1，9-2所示，缺口238位于罩体的第一侧壁233和第二侧壁234上，如图9-1所示，第一侧壁233为沿着纸面向外的侧壁，第二侧壁234为与第一侧壁233垂直相邻的侧壁。以及，罩体230还有第三侧壁235和第四侧壁236，其中，第一侧壁233与第二侧壁234相邻，第三侧壁235与第一侧壁233相对，第四侧壁236与第二侧壁234相对。在对罩体进行固定时，弹压件240压设在罩体230的第三侧壁235和第四侧壁236的外围。
进一步的，为了提升光导管220与罩体230之间的定位精度，在本申请提供的实施例中；如图9-1和图9-2所示，罩体230还具有弹性压舌237，该弹性压舌237通常为多个，且分布在至少两个相邻的面上，弹性压舌向内折 弯。当光导2管插入到罩体230内后，弹性压舌237会与光导管220的外壁弹性抵接，并驱使光导管220与弹性压舌237对应的的内壁紧贴，从而提升了光导管220与罩体230之间的定位精度。
具体的，在本申请提供的实施例中，如图9-2所示，罩体230的第三侧壁235和第四侧壁236的内侧均设有该弹性压舌237，以使光导管220的外壁能够与第一侧壁233和第二侧壁234的内壁紧贴。其中，弹性压舌237可以为向罩体230的内侧弯折的弹臂结构，该结构可以与罩体230一体成型，可降低罩体230的制作难度及制作成本。
进一步的，如图9-2所示，在本申请的一些实施例中，罩体230的第二端232具有抵挡部2301，用于阻止光导管220从第一端231装入后从第二端232滑出，因此抵挡部2301可用于限位，可以提升光导管220与罩体230之间在其长度方向上的定位精度。
在具体装配时，可以将光导管220由罩体230的第一端231伸入罩体230内，当安装到位后，光导管220的第二端与罩体230的抵挡部2301相抵，从而防止光导管220从罩体230的第二端232滑出。
另外，为了提升光导管220与罩体230之间的连接稳定性，在本申请提供的实施例中，罩体230上还设有注胶孔2302；具体的，如图9-2所示，该注胶孔2302设置在罩体的第一侧壁233和第二侧壁234上；当光导管220安装在罩体230内后，安装人员可向该注胶孔2302内填充胶水，以实现光导管220与罩体230之间的粘接固定；从而进一步提升了光导管220与罩体230之间的连接稳定性。在本申请的实施例中，注胶孔2302所在的侧壁与弹性压舌237所在的侧壁相对。
在具体实施时，罩体230可以为钣金件，通过冲压、剪切成型等工艺对罩体进行制作。当然，在其他实施例中，罩体230的材质及制作工艺可以为多种，本申请对此不作具体限定。
进一步的，为了将罩体230牢靠地固定在壳体210上，应用如图10所示的弹压件240。
图10为本申请一些实施例提供的弹压件的结构示意图，如图10所示，弹压件240具有用于与第三侧壁235的外侧相抵的第一弹性卡爪243，以及用于与第四侧壁236的外侧相抵的第二弹性卡爪244。第一弹性卡爪243可以至少为1个，通常设置为2个，以及第二弹性卡爪244也可以至少为1个，通常设置为2个。
通过这种结构设置，可实现弹压件240与罩体230之间的弹性紧贴，以提升罩体230与壳体210之间的良好贴附，以及光导管220的侧壁与光机壳体210之间的良好贴附。
另外，为了保证光导管的入光口端能够与光源光路之间实现良好的对接，请结合参阅图6、9-1,9-2和10，在本申请的实施例中，罩体230的第三侧壁235的外侧设有斜面2351；斜面2351用于与弹压件240的第一弹性卡爪243相抵，以使弹压件240朝罩体230的第一端231抵推罩体230。而光机壳体210的入光口端211处又相应设置了三个方向上的承靠台结构，从而，当弹压件240抵压罩体230(已装配有光导管200)，光导管200的入光口端就被限位在这三个承靠台结构处，从而实现入光口端的挤压固定。当然，在其他实施例中，也可以将斜面2351设置在第四侧壁236上，或者在第三侧壁235和第四侧壁236上均设置该斜面2351，其目的是为了通过弹性卡爪与斜面阻碍物的配合，对光导管或罩体具有一个推挤的力，增加承靠的紧密度。
通过这种结构设置能够使得光导管220的靠近罩体的第一端的端部能够与壳体210实现紧贴，从而提升对光能的收集效果。
以及，为了降低该斜面的制作难度及罩体230的制作成本，如图9-2所示，在本申请提供的实施例中，第三侧壁235具有朝罩体的外侧弯折的折臂；折臂的外侧面形成该斜面2351。
进一步的，为了保证弹压件240与壳体210之间的定位精度；如图10所示，弹压件240包括定位孔241和连接孔242。
具体的，定位孔241用于与壳体210上的定位结构(图中未示出)实现精准的定位，然后通过螺栓穿过连接孔242将弹压件240固定在壳体210上。
在具体实施时，弹压件240可以为钣金件，通过冲压、剪切成型等工艺对弹压件进行制作。当然，在其他实施例中，弹压件240的材质及制作工艺可以为多种，本申请对此不作具体限定。
进一步的，为了使得激光器110的光束仅能通过光导管220的内口径进行传送，而防止激光器110的光通过光导管220的无效部位传递至后续光路，影响匀化效果和对比度(由杂散光造成)，如图7和图11所示，在本申请提供的实施例中，还包括挡片250，挡片250用于遮挡光导管220的入光口端的部分端面。
具体来说，请结合参阅图7和图10，在本申请提供的实施例中，该挡片250具有L形的挡臂251，该挡臂251用于遮挡靠近罩体230的第三侧壁235和第四侧壁236处的光导管220的端面；在具体实施时，请结合参阅图6，由于靠近罩体230的第一侧壁和第二侧壁处的光导管的端面可以通过设置在壳体210上的承靠台219a和219b进行遮挡，因此，本申请提供的实施例中，该挡臂251为L形结构。当然，在其他实施例中，若壳体210上未设置相应的承靠台219a和219b，该挡臂251也可以为回形结构。在具体实施时，挡片250可以为钣金件，通过冲压、剪切成型等工艺对弹压件进行制作。当然，在其他实施例中，挡片250的材质及制作工艺可以为多种，本申请对此不作具体限定。
图11为本申请实施例提供的挡片的结构示意图。为了提升挡片250与光机壳体210之间的位置精度，如图11所示，挡片250包括定位孔252和连接 孔253。具体的，定位孔252用于与壳体上的定位结构(图中未示出)实现精准的定位，然后通过螺栓穿过连接孔253将挡片250固定在壳体210上。
图12为本申请实施例提供的照明系统的局部剖面结构示意图。为了提高光学效率，以及改善光阀表面光斑的质量，如图12所示，在本申请提供的实施例中，还包括安装于壳体210上的第一调节螺钉271和第二调节螺钉272，在一些实施方式，第一调节螺钉271的端部与罩体230的第一侧壁233相抵，第二调节螺钉272的端部与第二侧壁234相抵。可通过旋转第一调节螺钉271使第一侧壁233靠近或远离光机壳体210，通过旋转第二调节螺钉272使第二侧壁234靠近或远离光机壳体210，以调节光导管220的第二端即出光口端的朝向，从而保证经光导管220匀光后的光斑与DMD芯片(图中未示出)之间的精准对接，改善光阀表面光斑的位置和角度。
本申请上述一个或多个实施例中，光导管作为激光投影设备中的光机系统的重要光学部件，能够将从光源系统收集的光束进行匀化，光导管的出光口的长宽比与光阀的长宽比一致，因此，需要将光导管输出的光束进行再次整形后入射至光阀，被光阀调制输出。因此，光导管的位置既影响光能的收集效率，进而影响整个激光投影设备的系统光效，同时，光导管的输出又直接影响光阀表面接收的光斑的质量，比如，如果光导管歪斜，则达到光阀表面的光斑有可能不是矩形，或者不能完全覆盖光阀表面，这样既浪费了光能，也无法正常显示投影图像。
本申请一些实例中的光导管，安装于金属制的罩体中，罩体可以夹持光导管部件，并通过弹压件将安装有光导管的罩体抵靠在光机壳体相互垂直的两个侧壁上，且弹压夹还能够向光导管入光口端直接向前和向下的推力，这样光导管的入光口端就会抵接承靠在光机壳体上，并通过多个方向的承靠台结构进行限位，从而不易晃动和发生位移，保证了从光源系统的光收集效率。而通过在罩体承靠的光机壳体的两个侧壁上开设通孔，且通孔靠近光导管的第二端，即出光口端，用于容纳调节螺钉穿过，这样在光机壳体外部打 入螺钉，螺钉的端部可以抵接罩体的对应侧壁，调节罩体侧壁与光机壳体侧壁的距离，可以调节出光口端的空间位置，实现出射光斑的位置变化，进而影响入射光阀表面的光斑质量。上述实施例方案能够提高光导管的安装的精度，兼顾光效和调节的便利性。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (15)

  1. 一种激光投影设备，其特征在于，包括：
    光源系统，用于提供照明光束；
    光机系统，包括光机壳体、光导管以及光阀，所述光导管收集所述照明光束，并对所述照明光束进行匀化输出至所述光阀，所述光阀对接收到的光束进行调制并输出，
    镜头系统，用于接收调制后的光束并成像；
    其中，所述光导管的第一端与所述光源系统对接，所述光导管的第二端输出的光束入射所述光阀，所述光导管可调节地设置在所述光机壳体上。
  2. 根据权利要求1所述的激光投影设备，其特征在于，所述光导管的第一端抵接于所述光机壳体靠近所述光源系统的端侧，所述光导管的第二端可调节的设置于所述光机壳体上。
  3. 根据权利要去2所述的激光投影设备，其特征在于，所述光机系统还包括罩体，所述罩体用于容纳所述光导管，所述光导管截面为矩形，所述罩体为截面为矩形的筒状结构。
  4. 根据权利要求3所述的激光投影设备，其特征在于，所述光机壳体还包括弹压件，用于使所述罩体抵压固定在所述光机壳体上。
  5. 根据权利要求4所述的激光投影设备，其特征在于，所述光机壳体上具有相邻的两个侧壁，所述弹压件压设在所述罩体的第三侧壁和第四侧壁上，以将所述罩体抵压固定在所述光机壳体的两个侧壁上，所述第三侧壁和所述第四侧壁相邻。
  6. 根据权利要求5所述的激光投影设备，其特征在于，所述相邻的两个侧壁上 靠近所述光导管的第二端分别设置有通孔，所述通孔用于容纳调节螺钉。
  7. 根据权利要求3所述的激光投影设备，其特征在于，所述调节螺钉抵接在所述罩体相邻的侧壁上。
  8. 根据权利要求3所述的激光投影设备，其特征在于，所述罩体第一端的侧壁具有缺口，所述光导管第一端的侧壁透过所述缺口与所述光机壳体抵接。
  9. 根据权利要求5所述的激光投影设备，其特征在于，所述弹压件具有用于与所述第三侧壁的外侧相抵的第一弹性卡爪，以及用于与所述第四侧壁的外侧相抵的第二弹性卡爪。
  10. 根据权利要求10所述的激光投影设备，其特征在于，所述罩体包括第一侧壁和第二侧壁，所述第一侧壁和第二侧壁相邻，且所述第一侧壁和第三侧壁相对，所述调节螺钉的端部分别与所述罩体的第一侧壁、所述第二侧壁相抵。
  11. 根据权利要求10所述的激光投影设备，其特征在于，所述罩体的所述第三侧壁或所述第四侧壁的外侧设有斜面；
    所述斜面用于与所述弹压件的所述第一弹性卡爪或所述第二弹性卡爪相抵，以使所述弹压件朝所述罩体的第一端抵推所述罩体。
  12. 根据权利要求1所述的激光投影设备，其特征在于，还包括挡片；所述挡片固定于所述光机壳体上，用于遮挡所述光导管的第一端的部分端面。
  13. 根据权利要求3所述的激光投影设备，其特征在于，所述罩体的侧壁上设置有弹性压舌，所述弹性压舌用于与所述光导管的外壁抵接。
  14. 根据权利要求3所述的激光投影设备，其特征在于，所述罩体的第二端具有抵挡部，所述抵挡部用于与所述光导管的第二端相抵
  15. 根据权利要求14所述的激光投影设备，其特征在于，所述罩体上还具有注 胶口，所述注胶口所在罩体的侧壁，与所述弹性压舌所在的罩体的侧壁相对。
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