WO2015018231A1 - 光学片转轮、相关发光装置及投影系统 - Google Patents

光学片转轮、相关发光装置及投影系统 Download PDF

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Publication number
WO2015018231A1
WO2015018231A1 PCT/CN2014/079427 CN2014079427W WO2015018231A1 WO 2015018231 A1 WO2015018231 A1 WO 2015018231A1 CN 2014079427 W CN2014079427 W CN 2014079427W WO 2015018231 A1 WO2015018231 A1 WO 2015018231A1
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WIPO (PCT)
Prior art keywords
optical sheet
adapter
thermal expansion
fixing surface
rotating shaft
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.)
Ceased
Application number
PCT/CN2014/079427
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English (en)
French (fr)
Inventor
杨佳翼
胡飞
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Shenzhen Appotronics Corp Ltd
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Appotronics Corp Ltd
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Publication date
Application filed by Appotronics Corp Ltd filed Critical Appotronics Corp Ltd
Publication of WO2015018231A1 publication Critical patent/WO2015018231A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the 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
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection
    • 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

Definitions

  • the utility model relates to the technical field of illumination and display, in particular to an optical sheet runner, a related illumination device and a projection system.
  • Color wheel in digital optical processing technology DLP, Digital Light Procession
  • DLP Digital Light Procession
  • the role of the projector is the separation and processing of colors.
  • the separation and filtering of the color wheel by the color wheel is achieved by the high speed operation of the color wheel.
  • FIG. 1A and FIG. 1B The disc-shaped color wheel of the prior art is shown in FIG. 1A and FIG. 1B, and FIG. 1A is a schematic structural view of a color wheel of the prior art, and FIG. 1B is a diagram. A top view of the color wheel shown in 1A.
  • the color wheel 100 includes a filter 110 and a driving device for driving the rotation of the filter 110.
  • the driving device includes a rotating shaft 121 and a fixing surface fixed on the rotating shaft 122.
  • the fixing surface 122 is annular, and the ring is disposed on the rotating shaft 121 and perpendicular to the rotating shaft 121.
  • the filter 110 is composed of at least two sub-filters 111 The splicing is combined, wherein each of the sub-filters 111 is disposed on the rotating shaft 121 and encloses a circle, so that the filter 110 is annular as a whole. Filter 110 parallel to the fixed surface 122 And adhered to the fixing surface 122 by adhesive. The outer diameter of the fixing surface 122 is smaller than the outer diameter of the filter 110 such that the fixing surface 122 avoids the filter 110 The propagation path of the beam.
  • the glue between the filter 110 and the fixing surface 122 is a filter 110.
  • the centripetal force is provided such that the filter 110 rotates with it.
  • the greater the rotational speed of the color wheel 100 the greater the centripetal force.
  • a sufficient centripetal force is provided so that each of the sub-filters 111 falls off during the high-speed rotation of the color wheel 100.
  • the adhesive can be the filter 110 Provide a large enough centripetal force.
  • the filter absorbs a portion of the light during operation, or other working components generate heat so that the temperature near the color wheel 100 is higher, thereby causing the filter and the rotating shaft 121.
  • the fixed surface is heated.
  • the material of the filter and the fixing surface on the rotating shaft 121 122 The materials used are made of different materials.
  • the filter is generally glass, and the fixed surface is generally metal in order to ensure the hardness and cost requirements in high-speed rotation.
  • the thermal expansion coefficient of the metal is higher than the thermal expansion coefficient of the glass, so the deformation of the metal is greater than that of the glass under the temperature difference. The resulting deformation.
  • the metal and the glass are bonded together by a relatively hard adhesive, and the deformation of the metal causes a large stress on the glass through the adhesive, thereby causing the glass to be cracked.
  • a driving device comprising a rotating shaft and a fixing surface fixed perpendicularly to the rotating shaft;
  • the adapter includes an opposite first surface and a second surface, wherein the first surface and the fixing surface are fixed by a first adhesive bond;
  • the optical sheet is bonded and fixed to the second surface of the adapter by a first glue, the outer edge of the optical sheet exceeding the fixing surface and the adapter;
  • the thermal expansion coefficient of the optical sheet is smaller than a thermal expansion coefficient of the fixing surface, and a thermal expansion coefficient of the adapter matches a thermal expansion coefficient of the optical sheet;
  • the hardness of the adapter is greater than a predetermined value such that the stress of the adapter through the first glue is less than the stress threshold at which the fracture occurs when the fixed surface is deformed at a predetermined temperature.
  • the adapter is ceramic.
  • the adapter is quartz.
  • the adapter is an inorganic mixture.
  • the adapter is an alloy.
  • the embodiment of the present invention further provides an optical sheet runner, comprising:
  • a driving device comprising a rotating shaft and a fixing surface fixed perpendicularly to the rotating shaft;
  • An optical sheet bonded to the fixing surface by a first glue, the outer edge of the optical sheet exceeding the fixing surface;
  • the coefficient of thermal expansion of the fixing surface matches the coefficient of thermal expansion of the optical sheet, and the hardness of the fixing member is greater than a predetermined value so as not to be pulled apart during the rotation of the rotating shaft for driving the optical sheet.
  • the fixing surface of the fixing member is made of ceramic, quartz, an inorganic mixture or an alloy.
  • the embodiment of the present invention further provides a light emitting device, including:
  • a light source for emitting a light beam to a portion of the optical sheet wheel in which the optical sheet extends beyond the fixing surface.
  • the embodiment of the present invention further provides a projection system, including:
  • a light modulating device for receiving and modulating a light beam from the light emitting device.
  • the utility model includes the following beneficial effects:
  • the adapter Since the adapter is disposed between the fixing surface and the optical sheet, and the thermal expansion coefficient of the adapter matches the thermal expansion coefficient of the optical sheet, the optical sheet can be prevented from being transferred when the optical sheet and the adapter are deformed at a predetermined temperature.
  • the member is pulled apart; even if the fixing surface and the adapter are deformed at a predetermined temperature, the fixing faces a large stress against the adapter, and since the hardness of the adapter is greater than a predetermined value, the stress is less than the adapter causes the adapter to occur.
  • the critical value of the fracture stress so that the adapter is not cracked, thereby avoiding the fact that the optical sheet is pulled apart; and, because the hardness of the adapter is large, the adapter is respectively associated with the optical sheet and When the adapters are connected, the same high hardness adhesive can be used to avoid the optical sheet falling off during the rotation.
  • 1A is a schematic structural view of a prior art color wheel
  • Figure 1B is a plan view of the color wheel shown in Figure 1A;
  • FIG. 2A is a schematic structural view of an embodiment of an optical sheet runner of the present invention.
  • Figure 2B is a bottom plan view of the optical sheet in the optical sheet runner shown in Figure 2A;
  • FIG 3 is a schematic structural view of still another embodiment of the optical sheet runner of the present invention.
  • FIG. 2A is a schematic structural view of an embodiment of an optical sheet runner of the present invention.
  • Optical film wheel 1 The optical sheet 11 , the adapter 12 and a driving device 13 for driving the rotation of the optical sheet 11 are included.
  • the driving device 13 includes a rotating shaft 131 and a support member 132 that is fixed to the rotating shaft 131.
  • Support 132 In the shape of an annular groove, the inner side wall of the groove is disposed on the rotating shaft 131, and the bottom of the groove is a flat surface.
  • the drive unit 13 further includes a fixed surface 134 that is perpendicular to the axis of rotation 131 .
  • the fixing surface 134 is the bottom surface of the support member 132.
  • the support member 132 is considered in view of cost and hardness requirements.
  • the resulting material is typically a metal such as aluminum. Of course, other materials can be used in actual use, and there is no limitation here.
  • optical sheet 11 Since the optical sheet 11 is driven at the driving device 13 There is a phenomenon of unbalanced rotation during the rotation, and therefore, it is possible to bond some copper beads or steel balls or the like somewhere in the groove-shaped support member 132, or by punching a hole somewhere on the support member 132.
  • Optical sheet 11 Maintain dynamic balance during the rotation.
  • Fig. 2B is a bottom view of the optical sheet in the optical sheet runner shown in Fig. 2A.
  • the optical sheet 11 The ring shape is formed by splicing and combining four pieces of optical sheets 11a on the rotating shaft 131 and perpendicular to the rotating shaft 131.
  • the outer edge of the optical sheet 11 is beyond the fixed surface 134 So that the light beam can pass through the portion of the optical sheet 11 beyond the fixed surface 134.
  • the optical sheet 11 At least one of a filter, a diffuser, a light transmissive sheet, and a retroreflective sheeting may be included for filtering, scattering, transmitting, or reflecting the light beam, respectively.
  • the optical sheet 11 is generally made of a glass material. It is worth noting that the optical sheet 11 The number of sub-optical sheets in the middle is only exemplified. In practice, the optical sheet 11 may be formed by splicing two or more sub-optical sheets, or the optical sheet 11 It can also be a complete annular optical sheet.
  • the adapter 12 is used to fix the fixing surface 134 and the optical sheet 11 to each other.
  • the adapter 12 It has an annular sheet shape that conforms to the shape of the fixing surface 134.
  • the adapter 12 includes opposing first and second surfaces 12a, 12b, wherein the first surface 12a is bonded to the mounting surface 134 by a first adhesive.
  • the optical sheet is bonded to the second surface 12b of the adapter 12 by the same glue to be fixed to the fixing surface 134, so that the rotating device is used to drive the optical sheet 11 to rotate.
  • Thermal expansion coefficient of the connecting member 12 and the optical sheet 11 The coefficient of thermal expansion matches.
  • the thermal expansion coefficient matching of the two means that at a predetermined temperature, the connecting member and the optical sheet do not cause the two or one of the two to be pulled apart due to the difference in respective coefficients of thermal expansion.
  • the connector 12 The hardness is greater than the first predetermined value such that the stress of the adapter 12 through the first glue is less than that of the adapter 12 when the fixed surface 134 is deformed at the predetermined temperature.
  • the critical value of the broken stress occurs. It will be readily understood that the first predetermined value also changes when mated with a fixed surface having a different coefficient of thermal expansion. However, after determining the material of the fixed surface, the first predetermined value can be obtained by a limited experiment.
  • the connector 12 Made of ceramic material.
  • the adapter Since the adapter is disposed between the fixing surface and the optical sheet, and the thermal expansion coefficient of the adapter matches the thermal expansion coefficient of the optical sheet, the optical sheet can be prevented from being transferred when the optical sheet and the adapter are deformed at a predetermined temperature.
  • the member is pulled apart; even if the fixing surface and the adapter are deformed at a predetermined temperature, the fixing faces a large stress against the adapter, and since the hardness of the adapter is greater than the first predetermined value, the stress is less than the rotation.
  • the stress value of the fracture of the joint is broken, so that the adapter is not cracked, thereby preventing the optical sheet from being pulled apart.
  • the adapter since the adapter has a high hardness, the adapter can be made of the same harder adhesive when it is connected to the optical sheet and the adapter, respectively, to avoid the optical sheet falling off during the rotation. Flying out of the situation. At the same time, the use of the same adhesive can be more convenient in the process of processing and assembly.
  • the support member 132 It is not limited to the groove shape, and may be other shapes. In the case where the dynamic balance does not need to be controlled to be precise, the support member 132 may not be provided.
  • the driving device as shown in Fig. 1A can be at the driving device 13
  • the rotating shaft 131 is directly provided with a fixing surface which is provided with a rotating shaft 131.
  • the fixing surface may be provided at the top end of the rotating shaft 131 or at the middle portion; the fixing surface may also be integrally formed with the rotating shaft.
  • the adapter 12 may also be made of other materials, such as quartz, inorganic mixtures or alloys, as long as the coefficient of thermal expansion of the material matches the coefficient of thermal expansion of the optical sheet and the hardness is greater than the first predetermined value.
  • the support member 232 on the driving device Made of a predetermined material, wherein the predetermined coefficient of thermal expansion of the predetermined material matches the coefficient of thermal expansion of the optical sheet, and the hardness of the predetermined material is greater than a first predetermined value; that is, the support member 232 and the adapter member of the first embodiment 12
  • the finished material is identical, and the support member 232 serves as the adapter in the first embodiment.
  • the optical sheet 21 is directly bonded to the bottom surface 232c of the support member 232 by a hard adhesive. (i.e., the fixing surface of the driving device), without additionally adding an adapter between the support member 232 and the optical sheet 21.
  • the rotation axis can be avoided. 231
  • the occurrence of breakage during the rotation; and the thermal expansion coefficient of the optical sheet 21 is matched to avoid the fact that the optical sheet is pulled when the optical sheet and the support member are deformed at a predetermined temperature.
  • the shape is not limited to the shape described in the first embodiment, and may be other shapes as long as the support member can fix the optical sheet 21 and the rotating shaft 231 to each other.
  • the support member 232 may not be entirely made of one material as long as the support member 232 is provided.
  • the fixing surface for fixing to the optical sheets is made of the above predetermined material, so that the optical sheet can be prevented from being pulled at a predetermined temperature.
  • the inner side 232a and the outer side of the support member 232 The 232b is made of a metal such as aluminum to reduce the cost, and the bottom surface 232c (i.e., the fixed surface in the driving device) is made of a ceramic material to match the thermal expansion coefficient of the optical sheet.
  • the embodiment of the present invention further provides a light-emitting device, including an optical sheet runner, which may have the structure and function in the above embodiments; and a light source for The outgoing beam is directed to the portion of the optical sheet rotor where the optical sheet extends beyond the fixed surface.
  • Embodiments of the present invention also provide a projection system including the above-described light emitting device, and further comprising light modulating means for receiving and modulating a light beam from the light emitting device.
  • the projection system can employ various projection technologies, such as liquid crystal displays ( LCD, Liquid Crystal Display) projection technology, digital optical path processor (DLP, Digital Light Processor) ) Projection technology.
  • the above-described lighting device can also be applied to lighting systems, such as stage lighting.

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Astronomy & Astrophysics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
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Abstract

一种光学片转轮（1），包括驱动装置（13），包括转动轴（131）和与转动轴垂直固定的固定面（134）；转接件（12），包括相对的第一表面（12a）和第二表面（12b），其中第一表面和固定面通过第一胶粘接固定；光学片（11），通过第一胶与转接件的第二表面粘接固定，光学片的外缘超出固定面和转接件；光学片的热膨胀系数小于固定面的热膨胀系数，转接件的热膨胀系数和光学片的热膨胀系数匹配；转接件的硬度大于预定值，使得在预定温度下固定面产生形变时通过第一胶对转接件的应力小于使其发生破碎的应力临界值。

Description

光学片转轮、相关发光装置及投影系统 技术领域
本实用新型涉及照明及显示技术领域，特别是涉及一种光学片转轮、相关发光装置及投影系统。
背景技术
色轮在数字光学处理技术（ DLP ， Digital Light Procession ）投影机中的作用是色彩的分离和处理，色轮实现色彩的分离和过滤是需要通过色轮的高速运转来实现的。
现有技术的圆盘型色轮如图 1A 和图 1B 所示，图 1A 是现有技术的色轮的结构示意图，图 1B 是图 1A 所示的色轮的俯视图。色轮 100 包括滤光片 110 和用于驱动滤光片 110 转动的驱动装置。驱动装置包括转动轴 121 和固定在转动轴上的固定面 122 ，该固定面 122 呈环状，环设在转动轴 121 上并垂直于该转动轴 121 。滤光片 110 由至少两块子滤光片 111 拼接组合而成，其中各子滤光片 111 环设在转动轴 121 上并围成一圈，使得滤光片 110 整体呈环状。滤光片 110 平行于固定面 122 ，并通过粘胶与固定面 122 粘接固定。固定面 122 的外径小于滤光片 110 的外径，使得固定面 122 避开经过滤光片 110 的光束的传播路径。
在色轮 100 高速转动中，滤光片 110 和固定面 122 之间的粘胶为滤光片 110 提供向心力，使得滤光片 110 随之转动。色轮 100 的转速越大，该向心力也随之增大。实验发现，当粘胶的硬度较小时，粘胶无法为滤光片 110 提供足够大的向心力，使得在色轮 100 高速转动的过程中各子滤光片 111 脱落飞出。而当粘胶的硬度较大时，粘胶能够为滤光片 110 提供足够大的向心力。但滤光片在工作过程中会吸收一部分的光，或者其他工作部件产生热量使得色轮 100 附近的温度较高，进而使得滤光片和转动轴 121 的固定面受热。滤光片的制作材料和转动轴 121 上的固定面 122 的制作材料为不同材料。滤光片一般为玻璃，而将为保证在高速旋转中满足硬度要求以及成本要求，固定面一般为金属；而金属的热膨胀系数高于玻璃的热膨胀系数，因此在温差下金属产生的形变大于玻璃产生的形变。而金属和玻璃通过硬度较大的粘胶粘接在一起，金属产生的形变通过该粘胶对玻璃产生较大的应力，进而使玻璃被拉裂。
 技术问题
本实用新型实施例提供 一种光学片转轮，包括：
驱动装置，包括转动轴和与该转动轴垂直固定的固定面；
转接件，包括相对的第一表面和第二表面，其中第一表面和所述固定面通过第一胶粘接固定；
光学片，通过第一胶与所述转接件的第二表面粘接固定，该光学片的外缘超出所述固定面和所述转接件；
所述光学片的热膨胀系数小于所述固定面的热膨胀系数，所述转接件的热膨胀系数和所述光学片的热膨胀系数匹配；
所述转接件的硬度大于预定值，使得在预定温度下所述固定面产生形变时通过第一胶对所述转接件的应力小于使其发生破碎的应力临界值。
优选地，所述转接件为陶瓷。
优选地，所述转接件为石英。
优选地，所述转接件为无机混合物。
优选地，所述转接件为合金。
本实用新型实施例还提供一种光学片转轮，包括：
驱动装置，包括转动轴和与该转动轴垂直固定的固定面；
光学片，通过第一胶与所述固定面粘接固定，该光学片的外缘超出所述固定面；
所述固定面的热膨胀系数和所述光学片的热膨胀系数匹配，且所述固定件的硬度大于预定值，以在所述转动轴用于驱动所述光学片转动的过程中不被拉裂。
优选地，所述固定件的固定面的制成材料为陶瓷、石英、无机混合物或者合金。
本实用新型实施例还提供一种发光装置，包括：
上述光学片转轮；
光源，用于出射光束至所述光学片转轮中所述光学片超出所述固定面的部分。
本实用新型实施例还提供一种投影系统，包括：
上述发光装置；
光调制装置，用于接收来自所述发光装置的光束并进行调制。
与现有技术相比，本实用新型包括如下有益效果：
由于固定面和光学片之间设有转接件，且该转接件的热膨胀系数与光学片的热膨胀系数匹配，能够避免在预定温度下光学片和转接件发生形变时光学片被转接件拉裂；即使在预定温度下固定面和转接件发生形变时该固定面对该转接件产生较大的应力，由于转接件的硬度大于预定值使得该应力小于使得转接件发生破碎的应力临界值，因此不会造成转接件被拉裂，进而避免了光学片被拉裂的情况；而且，由于该转接件的硬度较大，使得该转接件分别与光学片和转接件相接时能够均采用相同的硬度较大的粘胶，以避免在转动的过程中光学片脱落飞出的情况。
 附图说明
图 1 A 是现有技术的色轮的结构示意图；
图 1B 是图 1A 所示的色轮的俯视图；
图 2A 为本实用新型的光学片转轮的一个实施例的结构示意图；
图 2B 是图 2A 所示的光学片转轮中光学片的仰视图；
图 3 为本实用新型的光学片转轮的又一个实施例的结构示意图。
 本发明的实施方式
下面结合附图和实施方式对本实用新型实施例进行详细说明。
实施例一
请参阅图 2A ，图 2A 为本实用新型的光学片转轮的一个实施例的结构示意图。 光学片转轮 1 包括光学片 11 、转接件 12 和用于驱动光学片 11 转动的驱动装置 13 。
驱动装置 13 包括转动轴 131 和环设固定在该转动轴 131 上的支撑件 132 。支撑件 132 呈环形槽状，该槽的内侧壁环设在转动轴 131 上，且该槽的底部为一平面。驱动装置 13 还包括固定面 134 ，该固定面 134 垂直于转动轴 131 。在本实施例中，该固定面 134 为支撑件 132 的底面。考虑到成本和硬度要求，该支撑件 132 的制成材料一般为金属（例如铝）。当然实际运用中也可以采用其他材料，在此并不做限制。
由于在驱动装置 13 驱动光学片 11 转动的过程中会出现转动不平衡的现象，因此，可通过在呈槽状的支撑件 132 中某处粘接一些铜珠或者钢珠等，或者通过在支撑件 132 上某处打洞，来使得光学片 11 在转动的过程中保持动平衡。
如图 2B 所示，图 2B 是图 2A 所示的光学片转轮中光学片的仰视图。本实施例中，光学片 11 呈环状，由四块子光学片 11a 环设在转动轴 131 上拼接组合而成，且垂直于转动轴 131 。光学片 11 的外缘超出固定面 134 ，以使得光束能够穿过该光学片 11 超出固定面 134 的部分。
本实施例中，光学片 11 可以包括滤光片、散光片、透光片和反光片中的至少一种，分别用于对光束进行过滤、散射、透射或者反射。光学片 11 一般采用玻璃材料制成。值得说明的是，光学片 11 中的子光学片的数量只是为举例说明，在实际运用中光学片 11 可以由大于或等于两块的子光学片拼接而成，或者，该光学片 11 也可以是一个完整的呈环形的光学片。
转接件 12 用于将固定面 134 和光学片 11 相互固定在一起。本实施例中，转接件 12 呈和固定面 134 形状一致的环形片状。该转接件 12 包括相对的第一表面 12a 和第二表面 12b ，其中第一表面 12a 通过第一胶粘接在固定面 134 上。而光学片通过同一种胶粘接在该转接件 12 的第二表面 12b 上，以和固定面 134 相互固定，进而使得转动装置用于驱动该光学片 11 转动。
连接件 12 的热膨胀系数和光学片 11 的热膨胀系数匹配。其中该两者的热膨胀系数匹配指的是，在预定温度下，连接件和光学片不会由于各自的热膨胀系数的差异导致该两者或该两者之一被拉裂。同时，连接件 12 的硬度大于第一预定值，使得在预定温度下固定面 134 产生形变时通过第一胶对转接件 12 的应力小于使该转接件 12 发生破碎的应力临界值。容易理解的是，在与具有不同热膨胀系数的固定面配合时，该第一预定值也随之改变。但在确定好固定面的材料后，该第一预定值可通过有限次实验得出。本实施例中，该连接件 12 由陶瓷材料制成。
本实施例中， 由于固定面和光学片之间设有转接件，且该转接件的热膨胀系数与光学片的热膨胀系数匹配，能够避免在预定温度下光学片和转接件发生形变时光学片被转接件拉裂；即使在预定温度下固定面和转接件发生形变时该固定面对该转接件产生较大的应力，由于转接件的硬度大于第一预定值，使得该应力小于使得转接件发生破碎的应力临界值，因此不会造成转接件被拉裂，进而避免了光学片被拉裂的情况。
而且，由于该转接件的硬度较大，使得该转接件分别与光学片和转接件相接时能够均采用相同的硬度较大的粘胶，以避免在转动的过程中光学片脱落飞出的情况。同时，采用相同的粘胶能够有利于在加工组装的过程中更加方便。
本实施例中，支撑件 132 并不限于槽状，也可以设为其他形状。在动平衡不需要控制得很精确的场合中，也可以不设有支撑件 132 。例如，如图 1A 中所示的驱动装置，可以在驱动装置 13 的转动轴 131 上直接设有一个环设转动轴 131 的固定面，该固定面可以设在转动轴 131 的顶端或者设在中部；该固定面还可以和转动轴一体成型。
本实施例中，转接件 12 也可以由其他材料制成，例如石英、无机混合物或者合金等其他材料，只要该材料的热膨胀系数与光学片的热膨胀系数匹配，且硬度大于第一预定值即可。
实施例二
请参阅图 3 ，图 3 为本实用新型的光学片转轮的又一个实施例的结构示意图。本实施例与实施例一的区别在于：
本实施例中，驱动装置上的支撑件 232 由预定材料制成，其中该预定材料的热膨胀系数和光学片的热膨胀系数匹配，且该预定材料的硬度大于第一预定值；也即该支撑件 232 和实施例一中的转接件 12 的制成材料一致，该支撑件 232 同时充当实施例一中的转接件。这样，本实施例中，光学片 21 直接通过硬胶粘接在支撑件 232 的底面 232c （也即驱动装置的固定面）上，而不需另外增加一个转接件设置在支撑件 232 和光学片 21 之间。 由于本实施例中的支撑件 232 的硬度足够，可以避免在转动轴 231 转动的过程中出现破碎的情况；而且和光学片 21 的热膨胀系数匹配，避免了在预定温度下光学片和支撑件发生形变时光学片被拉裂的情况。
当然，容易理解的是，该支撑件 232 的形状并不局限于实施例一中所描述的形状，还可以是其他形状，只要该支撑件能将光学片 21 与转动轴 231 相互固定即可。
而且，该支撑件 232 也可以不是全部用一种材料制成，只要该支撑件 232 中用于与光学片相互固定的固定面由上述预定材料制成，就可以避免在预定温度下光学片被拉裂的情况。具体举例来说，该支撑件 232 的内侧面 232a 和外侧面 232b 均由金属（例如铝）制成，以降低成本，而底面 232c （也即驱动装置中的固定面）由陶瓷材料制成，以和光学片热膨胀系数匹配。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
本实用新型实施例还提供一种发光装置，包括光学片转轮，该光学片转轮可以具有上述各实施例中的结构和功能；还包括光源，用于 出射光束至光学片转轮中光学片超出固定面的部分。本实用新型实施例还提供一种投影系统，包括上述发光装置，还包括光调制装置，用于接收来自该发光装置的光束并进行调制。该投影系统可以采用各种投影技术，例如液晶显示器（ LCD ， Liquid Crystal Display ）投影技术、数码光路处理器（ DLP ， Digital Light Processor ）投影技术。此外，上述发光装置也可以应用于照明系统，例如舞台灯照明。
以上所述仅为本实用新型的实施方式，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本实用新型的专利保护范围内。

Claims (9)

  1. 一种光学片转轮，其特征在于，包括：
    驱动装置，包括转动轴和与该转动轴垂直固定的固定面；
    转接件，包括相对的第一表面和第二表面，其中第一表面和所述固定面通过第一胶粘接固定；
    光学片，通过第一胶与所述转接件的第二表面粘接固定，该光学片的外缘超出所述固定面和所述转接件；
    所述光学片的热膨胀系数小于所述固定面的热膨胀系数，所述转接件的热膨胀系数和所述光学片的热膨胀系数匹配；
    所述转接件的硬度大于预定值，使得在预定温度下所述固定面产生形变时通过第一胶对所述转接件的应力小于使其发生破碎的应力临界值。
  2. 根据权利要求 1 所述的光学片转轮，其特征在于，所述转接件为陶瓷。
  3. 根据权利要求 1 所述的光学片转轮，其特征在于，所述转接件为石英。
  4. 根据权利要求 1 所述的光学片转轮，其特征在于，所述转接件为无机混合物。
  5. 根据权利要求 1 所述的光学片转轮，其特征在于，所述转接件为合金。
  6. 一种光学片转轮，其特征在于，包括：
    驱动装置，包括转动轴和与该转动轴垂直固定的固定面；
    光学片，通过第一胶与所述固定面粘接固定，该光学片的外缘超出所述固定面；
    所述固定面的热膨胀系数和所述光学片的热膨胀系数匹配，且所述固定件的硬度大于预定值，以在所述转动轴用于驱动所述光学片转动的过程中不被拉裂。
  7. 根据权利要求 6 所述的光学片转轮，其特征在于，所述固定件的固定面的制成材料为陶瓷、石英、无机混合物或者合金。
  8. 一种发光装置，其特征在于，包括：
    如权利要求 1 至 7 任一项所述的光学片转轮；
    光源，用于出射光束至所述光学片转轮中所述光学片超出所述固定面的部分。
  9. 一种投影系统，其特征在于，包括：
    如权利要求 8 所述的发光装置；
    光调制装置，用于接收来自所述发光装置的光束并进行调制。
PCT/CN2014/079427 2013-08-05 2014-06-07 光学片转轮、相关发光装置及投影系统 Ceased WO2015018231A1 (zh)

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Citations (4)

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US6618214B2 (en) * 2001-07-13 2003-09-09 Coretronic Corporation Color wheel having adhesive-escape-prevention means
CN1779550A (zh) * 2004-11-18 2006-05-31 普立尔科技股份有限公司 色轮及其组装方法
CN2791698Y (zh) * 2005-04-15 2006-06-28 普立尔科技股份有限公司 具有动平衡鸠尾槽的色轮
CN201087850Y (zh) * 2007-09-21 2008-07-16 扬明光学股份有限公司 色轮

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Publication number Priority date Publication date Assignee Title
US6618214B2 (en) * 2001-07-13 2003-09-09 Coretronic Corporation Color wheel having adhesive-escape-prevention means
CN1779550A (zh) * 2004-11-18 2006-05-31 普立尔科技股份有限公司 色轮及其组装方法
CN2791698Y (zh) * 2005-04-15 2006-06-28 普立尔科技股份有限公司 具有动平衡鸠尾槽的色轮
CN201087850Y (zh) * 2007-09-21 2008-07-16 扬明光学股份有限公司 色轮

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