WO2021093566A1 - Ensemble de guidage de lumière et système optique - Google Patents

Ensemble de guidage de lumière et système optique Download PDF

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Publication number
WO2021093566A1
WO2021093566A1 PCT/CN2020/123807 CN2020123807W WO2021093566A1 WO 2021093566 A1 WO2021093566 A1 WO 2021093566A1 CN 2020123807 W CN2020123807 W CN 2020123807W WO 2021093566 A1 WO2021093566 A1 WO 2021093566A1
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WO
WIPO (PCT)
Prior art keywords
light guide
guide rod
light
rotating part
guide assembly
Prior art date
Application number
PCT/CN2020/123807
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English (en)
Chinese (zh)
Inventor
陈兴加
陈彬
Original Assignee
深圳市绎立锐光科技开发有限公司
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Application filed by 深圳市绎立锐光科技开发有限公司 filed Critical 深圳市绎立锐光科技开发有限公司
Publication of WO2021093566A1 publication Critical patent/WO2021093566A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems

Definitions

  • the present invention relates to the field of optics, in particular to a light guide assembly and an optical system.
  • the illumination spot emitted by the light source is generally required to be a uniform circular spot.
  • the existing homogenizing elements include a square light guide rod and a round light guide rod.
  • the cross section of the square light guide rod perpendicular to the center line of the light guide rod is square, and the cross section of the round light guide rod perpendicular to the center line of the light guide rod is Round, the uniform light effect of the square light guide rod is better than that of the round light guide rod.
  • a square light guide rod is generally used for uniform light to obtain a uniform illumination spot.
  • one way is to use a square-to-round integrated light guide rod, or a combination of a square light guide rod and a round light guide rod.
  • the main problem is that the light spot will have a pattern of light and dark.
  • the method is to set a circular pattern sheet on the exit light path of the light source.
  • the main problem is that the light utilization rate is low.
  • the invention provides a light guide component and an optical system, which can convert a non-circular light spot into a circular light spot with a larger area and better uniform light effect, and meet application requirements.
  • an embodiment of the present invention provides a light guide assembly, including a light guide rod, a rotating part sleeved on the outside of the light guide rod and fixedly connected to the light guide rod, and a driving assembly that drives the rotating part to rotate, the light guide rod It is used for homogenizing light.
  • the rotating part rotates, the light guide rod is driven to rotate around an axis parallel to the long axis direction of the light guide rod, and the light derived from the light guide rod forms a circular spot when the light guide rod rotates.
  • the light guide assembly further includes a bearing, which is sleeved on the outside of the rotating part and is rotatably connected with the rotating part, and the bearing remains stationary when the rotating part rotates.
  • the rotating part includes a rotating shell and a transmission device.
  • the rotating shell includes a shell and a fixing part arranged on the surface of the shell.
  • the shell forms an accommodating space, the light guide rod is accommodated in the accommodating space, and the fixing part is fixedly connected to the housing and the light guide.
  • the rod and the transmission device are sleeved on the outer surface of the rotating shell.
  • the transmission device includes a gear or a pulley, and the drive assembly drives the transmission device to rotate through gear meshing or a transmission belt.
  • the fixing member includes an elastic sheet, and the elastic sheet is pressed against the light guide rod.
  • the outer surface of the rotating shell is provided with at least one hook
  • the elastic piece is provided with an opening corresponding to the hook along a direction perpendicular to the central axis of the light guide rod, and the hook passes through the opening to buckle and fix the elastic piece.
  • the central axis of the light guide rod coincides with the central axis of the rotating part.
  • the central axis of the light guide rod and the central axis of the rotating part are parallel and do not coincide.
  • embodiments of the present invention also provide a light guide assembly, including a light guide rod, a rotating part sleeved on the outside of the light guide rod and fixedly connected to the light guide rod, and a driving assembly that drives the rotating part to rotate.
  • the rod is used for homogenizing light.
  • the rotating part includes an end in the direction of the long axis.
  • the drive assembly is arranged at the end. When the rotating part rotates, the light guide rod is driven to rotate around an axis parallel to the long axis of the light guide rod. The light derived during rotation forms a circular spot.
  • the end portion includes a bottom wall
  • the bottom wall includes an inner surface and an outer surface that face away from each other
  • the driving component abuts on the outer surface and is fixedly connected to the rotating portion
  • the light guide assembly further includes a fluorescent device, the fluorescent device is provided on the inner surface, and the light guide rod abuts against the fluorescent device.
  • the light guide assembly further includes a reflection device, the reflection device is arranged on the inner surface, and the light guide rod abuts against the reflection device.
  • the rotating part includes a heat dissipation structure, the heat dissipation mechanism is located on the outer surface, and the heat dissipation structure is a plurality of fan-like fins or spoiler posts.
  • an embodiment of the present invention also provides an optical system, including a light source and the above-mentioned light guide component, and the light guide component collects the light emitted by the light source.
  • the light guide assembly and the optical system provided by the present invention drive the light guide rod to rotate through the rotating part.
  • the light is reflected multiple times inside the light guide rod, and each reflection will form a virtual light source image, and the multiple reflections form a two-dimensional virtual light source matrix.
  • the non-circular light spot is transformed into a circular light spot with a larger area and better uniform light effect to meet application requirements.
  • Fig. 1 is a schematic structural diagram of a light guide assembly provided by an embodiment of the present invention.
  • Fig. 2 is a schematic diagram of a light guide rod of a light guide assembly provided by an embodiment of the present invention.
  • Fig. 3 is a schematic diagram of a light guide rod of a light guide assembly provided by another embodiment of the present invention.
  • Fig. 4 is a schematic diagram of a circular light spot emitted by the light guide assembly provided by the embodiment of the present invention.
  • FIG. 5 is a schematic diagram of the brightness of a circular light spot emitted by a light guide assembly provided by an embodiment of the present invention.
  • Fig. 6 is a schematic cross-sectional view of a light guide assembly provided by an embodiment of the present invention.
  • FIG. 7 is a schematic cross-sectional view of a light guide assembly provided by another embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a light guide assembly provided by an embodiment of the present invention performing eccentric rotation.
  • Fig. 9 is a schematic diagram of a light guide assembly provided by another embodiment of the present invention rotating through a conveyor belt.
  • Fig. 10 is a schematic structural diagram of an optical system provided by an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a light guide assembly provided by another embodiment of the present invention.
  • Fig. 12 is a schematic structural diagram of a light guide assembly provided by still another embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a heat dissipation structure of an optical system provided by an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of another heat dissipation structure of an optical system provided by an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of an optical system provided by another embodiment of the present invention.
  • Fig. 16 is a schematic structural diagram of an optical system provided by another embodiment of the present invention.
  • an embodiment of the present invention provides a light guide assembly 100.
  • the light guide assembly 100 includes a light guide rod 10, a rotating part 20, and a driving assembly 30.
  • the rotating part 20 is sleeved on the outside of the light guide rod 10 and is connected to the light guide rod.
  • the rod 10 is fixedly connected, and the driving assembly 30 drives the rotating part 20 to rotate.
  • the light guide rod 10 is used for homogenizing light.
  • the rotating part 20 rotates, the light guide rod 10 is driven to rotate around an axis X parallel to the long axis direction of the light guide rod 10.
  • the light guided by the light guide rod 10 when it rotates forms a circular light spot.
  • the axis X of the long axis direction of the light guide rod 10 coincides with the rotation axis of the rotating part 20, that is, the light guide rod 10 is arranged along the rotation axis of the rotating part 20.
  • the axis X of the long axis direction of the light guide rod 10 is parallel to and does not overlap the rotation axis of the rotating part 20, that is, the light guide rod 10 is eccentrically arranged inside the rotating part 20.
  • the light guide rod 10 is a solid structure, the light guide rod 10 along the two ends of the axis X, namely the first end surface 11 and the second end surface 12, the light guide rod 10 along the direction perpendicular to the axis X
  • the cross section is quadrilateral.
  • the cross section of the light guide rod 10 along the axial direction X may also be various polygons such as triangles, pentagons, hexagons, and octagons. According to many experiments and calculations, it is found that the light guide rod 10 with a polygonal cross section has a better uniform light effect and less light loss than a light guide rod with a circular cross section.
  • the light guide rod 10 may also be a hollow structure.
  • the light guide rod 10 has a center symmetric structure, and the light guide rod 10 is the same at the cross section perpendicular to the axial direction X.
  • the cross-section of the light guide rod 10a perpendicular to the axis direction Y can also be changed proportionally. For example, along the axis direction Y, the area of the first end surface 11a is larger than that of the second end surface. The area of 12a, the cross-section parallel to each other between the first end surface 11a and the second end surface 12a becomes uniformly smaller along the direction from the first end surface 11a to the second end surface 12a.
  • the cross-sectional area can also be non-uniformly larger, or the cross-sectional area at the second end 12a can also be larger than the cross-sectional area at the first end surface 11a. area.
  • the light homogenization principle of the light guide rod 10 is as follows: light is reflected multiple times inside the light guide rod 10, and each reflection will form a virtual light source image, and the multiple reflection virtual light source images form a two-dimensional virtual light source matrix, thereby making the light more uniform.
  • the light guide rod 10 with a non-circular cross-section is not rotated, the light derived from it will form a corresponding non-circular light spot, and the non-circular light spot can be transformed into a larger area and better uniform light effect when the light guide rod 10 rotates. Circular spot to meet application requirements.
  • the cross section of the light guide rod 10 is quadrilateral and the side length is 2a, referring to FIG. 4, as the light guide rod 10 rotates, numerous light spots are formed on the light exit surface of the light guide rod 10. The two spots overlap to form the final illumination spot.
  • the speed at which the human eye recognizes a coherent image is 24 frames per second, which is 1000 milliseconds/24 frames, which is about 40ms (milliseconds). If a coherent image reaches or exceeds this speed, the human eye will not A feeling of stuttering is formed, so when the rotation speed of the light guide rod 10 is higher than 24 rpm, a continuous circular illuminating spot can be formed under observation by the human eye.
  • the diameter of the circular light spot is the diameter of the circumscribed circle of the quadrilateral light spot, that is, 2 ⁇ 2a.
  • the light guide rod 10 with a quadrilateral cross-section expands the spot area of the original quadrilateral into the spot area of the circumscribed circle of the quadrilateral, thereby having better lighting and projection effects.
  • the diameter is 2a (between a on the left side of the 0 point on the horizontal axis and a on the right side). It is the overlap of multiple quadrilateral light spots.
  • the brightness of this part of the circular light spot is the same as that of the quadrilateral light spot.
  • the brightness ratio gradually decreases until it reaches zero.
  • the rotating part 20 may further include a bearing 27.
  • the bearing 27 is sleeved on the outside of the rotating part 20 and is rotatably connected with the rotating part 20.
  • the bearing 27 remains stationary.
  • the bearing 27 has an annular structure.
  • the number of the bearing 27 is two, and the two bearings 27 are respectively provided at both ends of the rotating part 20.
  • the light guide assembly 100 may further include a stationary housing 28, the stationary housing 28 includes an annular groove 281, and the bearing 27 is embedded in the annular groove 281. During the rotation of the rotating part 20, the bearing 27 slides relative to the stationary housing 28 in the annular groove 281.
  • the bearing 27 has an inner surface 271 and an outer surface 272.
  • the bearing 27 is sleeved on both ends of the rotating part 20 through the inner surface 271, and the outer surface 272 is screwed 273 is fixed to the stationary housing 28.
  • the rotating part 20 and the bearing 27 slide relatively, and the bearing 27 and the stationary housing 28 remain relatively stationary.
  • the arrangement of the bearing 27 and the stationary housing 28 can play the role of fixing and protecting the light guide assembly 100, avoiding other objects in the environment from affecting the high-speed rotating light guide assembly 100, and improving the stability and safety factor of the system.
  • the rotating part 20 includes a rotating shell 21 and a transmission device 23, and the transmission device 23 is sleeved on the outer surface of the rotating shell 21.
  • the rotating shell 21 has a hollow cylindrical structure.
  • the rotating shell 21 includes a shell 211 and a fixing member 212 provided on the surface of the shell 211.
  • the shell 211 forms a receiving space 213, and the light guide rod 10 is accommodated in the receiving space. 213.
  • the fixing member 212 is fixedly connected to the housing 211 and the light guide rod 10.
  • the structure of the accommodating space 213 matches the shape of the light guide rod 10 to stably place the light guide rod 10.
  • the way that the light guide rod 10 is accommodated in the accommodating space 211 not only can drive the light guide rod 10 to rotate by the rotating shell 21, but also can better fix the light guide rod 10.
  • the circumferential surfaces of the two ends of the hollow cylinder structure of the rotating shell 21 are complete, the circumferential surface of the middle section is hollowed out, and the circumferential surfaces of the two ends are connected by a plurality of cylinders, and the hollow part forms the receiving space 213.
  • the transmission device 23 is specifically a transmission gear with a saw-tooth structure on the outer periphery, and the transmission device 23 rotates in a gear transmission manner. Specifically, the transmission device 23 is driven to rotate by the driving assembly 30 as a passive gear.
  • the driving assembly 30 includes a driving wheel 31, and the driving wheel 31 is in meshing connection with the transmission device 23.
  • the axis X of the long axis direction of the light guide rod 10 coincides with the rotation axis of the rotating part 20, and the number of transmission gears is two, which are respectively sleeved on the circumferential surfaces of the two ends of the rotating shell 21. In the present invention In other embodiments, the number of transmission gears may also be one.
  • the transmission device 23a is a belt pulley, and the transmission device 23a rotates in a belt drive manner.
  • the outer peripheral surface of the transmission device 23a is provided with a transmission belt groove, and the driving assembly 30a includes a turntable.
  • the turntable is connected to the transmission device 23a through a transmission belt 281.
  • the turntable is used as a driving wheel to drive the transmission device 23a to rotate through the transmission belt 281.
  • the fixing member 212 includes an elastic sheet 2121, and the elastic sheet 2121 is pressed against the light guide rod 10.
  • the outer surface of the rotating shell 21 is provided with at least one hook 215
  • the elastic sheet 2121 is provided with an opening 2122 corresponding to the hook 215 along an axis perpendicular to the long axis direction of the light guide rod 10, and the hook 215 passes through the opening 2122 to be buckled and fixed.
  • Shrapnel 2121 The elastic sheet 2121 is arranged around the outer circumference of the light guide rod 10. The elastic sheet 2121 can firmly combine the light guide rod 10 and the rotating shell 21 to prevent the light guide rod 10 and the rotating shell 21 from being separated during the high-speed rotation of the light guide assembly 100, and improve the overall stability of the light guide assembly 100.
  • the fixing member 212 may also adopt other structures, such as a glue strip or an elastic contraction device to fix the light guide rod 10 and the rotating part 20.
  • an embodiment of the present invention further provides an optical system 200, which is a transmissive optical system.
  • the optical system 200 includes a light source 40 and a light guide assembly 100.
  • the light guide assembly 100 receives the light emitted by the light source 40, homogenizes it, and derives a circular light spot when rotating.
  • the optical system 200 further includes a condensing lens 50 located on the optical path between the light source 40 and the light guide assembly 100, and the condensing lens 50 is used to collect and condense the light emitted by the light source 40.
  • a receiving screen 90 is also provided in FIG. 9, and the light emitted by the light source 40 forms a circular light spot on the receiving screen 90. It is well known that the presence or absence of the receiving screen 90 will not affect the light output effect of the optical system 100. In other embodiments of the present invention, the receiving screen 90 may not be provided.
  • the light emitted by the light source 40 is condensed on the light entrance surface of the light guide assembly 100 by the condensing lens 50.
  • the light guide assembly 100 rotates under the driving of an external motor, and countless square spots are formed on the light exit surface of the light guide assembly 100. The light spots overlap to form a circular light spot.
  • the transmissive optical system 200 has a simple structure and can form a circular light spot with a good uniform light effect, and has a wide range of applications.
  • an embodiment of the present invention also provides a light guide assembly 300
  • the light guide assembly 300 includes a light guide rod 10a, a rotating part 320 sleeved on the outside of the light guide rod 10a and fixedly connected to the light guide rod 10a, and The driving assembly 330 that drives the rotating part 320 to rotate.
  • the light guide rod 10a is used for homogenizing light.
  • the rotating part 320 includes an end 321 located in the long axis direction.
  • the driving assembly 330 is arranged at the end 321.
  • the light guide rod When the rotating part 320 rotates, the light guide rod is driven 10a rotates around an axis Y parallel to the long axis direction of the light guide rod 10a, and the light derived from the light guide rod 10a forms a circular spot when it rotates.
  • the drive assembly 330 includes a motor 3301 and a drive shaft 3302.
  • the drive shaft 3302 and the motor 3301 are an integral rotating structure, that is, the motor 3301 and the drive shaft 3302 are fixedly connected and can move together, thereby effectively avoiding other combinations.
  • the meshing mode there are problems of meshing accuracy and concentricity between multiple rotating parts.
  • the rotating part 320 has high integration, no redundant rotating parts, and the rotating part 320 has good symmetry, which will not cause serious problems.
  • the rotation balance problem is a rotation balance problem.
  • the rotating part 320 includes a rotating shell 321.
  • the rotating shell 321 has a hollow cylindrical structure.
  • the end 321 includes a bottom wall 322.
  • the bottom wall 322 includes an inner surface 3221 and an outer surface 3222 that are away from each other.
  • the drive assembly 330 abuts It is connected to the outer surface 3222 and fixedly connected to the rotating part 320.
  • the light guide assembly 300 further includes a fluorescent device 340, the fluorescent device 340 is disposed on the inner surface 3221, and the light guide rod 10 a abuts against the fluorescent device 340.
  • the fluorescent device 340 is a film-like structure composed of fluorescent materials, which emits fluorescence under the excitation of the light beam.
  • the fluorescent device 340 generates heat during the light conversion process. If the fluorescent device 340 cannot dissipate heat in time, the fluorescent device 340 will work The temperature gradually rises, and the fluorescence conversion efficiency drops sharply after a certain temperature. The increase in thermal power consumption causes a vicious circle, and finally fails at extreme operating temperatures.
  • the fluorescent device 340 is further a fluorescent film with a scattering function, which can dissipate part of the light beam and reduce the accumulation of heat.
  • the fluorescent device 340 may be formed by mixing fluorescent powder and its carrier.
  • the carrier may be glue, glass, etc.
  • the fluorescent powder may be, for example, yellow fluorescent powder, green fluorescent powder, red fluorescent powder, or several types of fluorescent powder.
  • the wavelength of the light emitted by the light source is converted by exciting the phosphor to form the illuminating light.
  • a reflective layer is provided between the fluorescent device 340 and the inner surface 3221, and the reflective layer is a metal reflective layer. Or non-metallic reflective layer.
  • the fluorescent device 340 may also be a metal reflective material, such as silver, aluminum, gold, chromium, nickel, copper, platinum, rhodium, and silver/aluminum, gold/silver, gold/aluminum, gold/ At least one material such as silver/aluminum, or a composite material formed of two or more, can also be non-metallic reflective materials, such as silicon oxide, magnesium fluoride, zinc sulfide, tantalum oxide, cerium oxide, zirconium oxide, and aluminum oxide At least one material or a composite material formed of two or more kinds or a metal-non-metal composite reflective material, and a composite material formed of two or more materials of the above-mentioned metal and non-metal.
  • a metal reflective material such as silver, aluminum, gold, chromium, nickel, copper, platinum, rhodium, and silver/aluminum, gold/silver, gold/aluminum, gold/ At least one material such as silver/aluminum,
  • a thermal conductive paste may be coated between the fluorescent device 340 and the inner surface 3221 to reduce the contact thermal resistance between the fluorescent device 340 and the fluorescent device 340.
  • the light guide assembly 300 can also replace the fluorescent device 340 with a reflective device 350, the reflective device 350 is provided on the inner surface 3221, and the light guide rod 10a abuts against the reflective device 350 to reflect The device 350 is used to reflect the received light.
  • the light guide rod 10a and the reflecting device 350 may also be separated by a certain distance.
  • the rotating part 320 may further include a heat dissipation structure 326, which is located on the outer surface 3222, and is used for dissipating heat generated by the system and cooling the rotating shell.
  • the heat dissipation structure 326 is a plurality of fan-like fins 3261.
  • the heat dissipation structure 326 a may also be a plurality of spoiler columns 3262. The spoiler column 3262 and the fan-like structure fin 3261 can be mixedly arranged on the outer surface 3222.
  • the heat dissipation structures 326 and 326a are used to enhance nearby fluid disturbance during rotation and increase the convective heat transfer coefficient, so as to achieve the purpose of enhancing heat transfer without adding additional heat dissipation elements.
  • an embodiment of the present invention also provides an optical system 400, which is a reflective optical system.
  • the optical system 400 includes a light source 440 and a light guide assembly 500.
  • the light guide assembly 500 includes a fluorescent device 470.
  • the fluorescent device 470 is spaced a certain distance from the light guide rod 510, and the light guide assembly 500 receives the light emitted by the light source 440.
  • the optical system 400 further includes a light splitting and light combining element 460, and the light splitting and light combining element 460 is located on the optical path between the light source 440 and the light guide assembly 500.
  • the light splitting and combining element 460 is a dichroic plate, and the light splitting and combining element 460 includes a first surface 461 and a second surface 462 opposite to each other.
  • the first surface 461 is disposed near the light source 440, and the second surface 462 is near the guide
  • the optical assembly 500 is set.
  • the light splitting and combining element 460 is a dichroic plate, the light incident on the first surface 461 is transmitted through the first surface 461, and the light incident on the second surface 462 is reflected on the second surface 462, thereby playing a role of light splitting.
  • the light splitting and light combining element 460 may also be one of a regional coating sheet or a regional light combining sheet.
  • the optical system 400 further includes a condensing lens 450 for collecting and condensing the light emitted by the light source 440.
  • the fluorescent device 470 may remain stationary or rotate together with the light guide assembly 300.
  • an embodiment of the present invention also provides an optical system 600, which is a reflective optical system.
  • the optical system 600 includes a light source 640 and a light guide assembly 300, and the light guide assembly 300 receives the light emitted by the light source 640.
  • the optical system 600 further includes a light splitting and combining element 660, and the light splitting and combining element 660 is located on the optical path between the light source 640 and the light guide assembly 300.
  • the embodiment of the present invention provides that the optical system 200 adopts the light guide assembly 100, the optical system 400 adopts the light guide assembly 500, and the optical system 600 adopts the light guide assembly 300 can all obtain a circular spot with uniform brightness, and the optical path is simple and applicable. wide range.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un ensemble de guidage de lumière (100), comprenant une tige de guidage de lumière (10), une partie rotative (20) emmanchée sur l'extérieur de la tige de guidage de lumière (10) et raccordée à demeure à la tige de guidage de lumière (10), et un ensemble d'entraînement (30) pour entraîner la partie rotative (20) en rotation. La tige de guidage de lumière (10) est utilisée pour l'homogénéisation de la lumière. Lorsque la partie rotative (20) se met en rotation, la tige de guidage de lumière (10) est entraînée en rotation autour d'un axe parallèle à la direction axiale longue de la tige de guidage de lumière (10), et la lumière guidée vers l'extérieur par la tige de guidage de lumière (10) pendant la rotation forme un point lumineux circulaire. L'invention concerne également un système optique (200) comprenant une source de lumière (40) et l'ensemble de guidage de lumière (100) décrit. L'ensemble de guidage de lumière (100) reçoit la lumière émise par une source de lumière (40). L'ensemble de guidage de lumière (100) et le système optique (200) entraînent la tige de guidage de lumière (10) en rotation au moyen de la partie rotative (20), de telle sorte qu'un point lumineux non circulaire est converti en un point lumineux circulaire ayant une plus grande surface et un meilleur effet d'homogénéisation de la lumière, satisfaisant ainsi aux exigences d'application.
PCT/CN2020/123807 2019-11-13 2020-10-27 Ensemble de guidage de lumière et système optique WO2021093566A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201911109139.9 2019-11-13
CN201911109139.9A CN112797373B (zh) 2019-11-13 2019-11-13 导光组件及光学***

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WO2021093566A1 true WO2021093566A1 (fr) 2021-05-20

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