TW201831978A - Laser light source for projector and laser projection device - Google Patents

Laser light source for projector and laser projection device Download PDF

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Publication number
TW201831978A
TW201831978A TW106126325A TW106126325A TW201831978A TW 201831978 A TW201831978 A TW 201831978A TW 106126325 A TW106126325 A TW 106126325A TW 106126325 A TW106126325 A TW 106126325A TW 201831978 A TW201831978 A TW 201831978A
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Taiwan
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light
fluorescent
laser
module
color
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TW106126325A
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Chinese (zh)
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TWI689774B (en
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張克蘇
呂俊賢
周彥伊
陳琪
郭柏村
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台達電子工業股份有限公司
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Priority to JP2017200640A priority Critical patent/JP6554750B2/en
Priority to US15/854,726 priority patent/US10288992B2/en
Priority to EP18153934.7A priority patent/EP3364246B1/en
Publication of TW201831978A publication Critical patent/TW201831978A/en
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Publication of TWI689774B publication Critical patent/TWI689774B/en

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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2033—LED or laser light sources
    • G03B21/204—LED or laser light sources using secondary light emission, e.g. luminescence or fluorescence
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Projection Apparatus (AREA)

Abstract

A laser light source for projector includes a laser light source module, first and second light receiving modules, a phosphor wheel, and a light combining module. The laser light source module emits a laser. The phosphor wheel has a first side and a second side. The phosphor wheel receives the laser and transforms the laser into first and second fluorescent light. The first side receives the laser and emits the first fluorescent light. The second side emits the second fluorescent light. After the first fluorescent light passes the first light receiving module and the second fluorescent light passes the second light receiving module, at least one of the directions of the optical axis of the first and second fluorescent light is changed. The sum of the changing of the direction of the optical axis of the first and second fluorescent light is at least twice. The light combining module receives the first and second fluorescent light and emits a combined light.

Description

雷射投影光源與雷射投影裝置Laser projection light source and laser projection device

本發明是有關於一種雷射投影光源與一種雷射投影裝置。The invention relates to a laser projection light source and a laser projection device.

隨著雷射光源開發的進步，雷射光源的尺寸越做越小，功率與亮度越來越佳，因此以雷射作為光源的投影機也就越來越普遍。With the development of laser light sources, the size of laser light sources is getting smaller and smaller, and the power and brightness are getting better and better, so projectors using lasers as light sources are becoming more and more common.

為了進一步改善雷射投影光源的各項特性，相關領域莫不費盡心思開發。如何能提供一種具有較佳特性的雷射投影光源，實屬當前重要研發課題之一，亦成爲當前相關領域亟需改進的目標。In order to further improve various characteristics of the laser projection light source, the related fields have been painstakingly developed. How to provide a laser projection light source with better characteristics is really one of the important R & D topics at present, and it has also become an urgent need for improvement in related fields.

本發明之一技術態樣是在提供一種雷射投影光源，以提升其所發射的合光的亮度。One aspect of the present invention is to provide a laser projection light source to increase the brightness of the combined light emitted by the laser projection light source.

根據本發明一實施方式，一種雷射投影光源包含至少一第一雷射光源模組、第一收光模組、螢光輪、第二收光模組以及合光模組。第一雷射光源模組發射第一雷射光。第一雷射光通過第一收光模組。螢光輪具有第一側與第二側。螢光輪接收第一雷射光，且轉換第一雷射光為第一螢光與第二螢光。第一側接收通過第一收光模組的第一雷射光且發射第一螢光。第二側發射第二螢光。第一螢光通過第一收光模組與第二螢光通過第二收光模組後，第一螢光與第二螢光中的至少一個的光軸會被轉折，而第一螢光與第二螢光的光軸的轉折次數和為至少兩次。合光模組接收通過第一收光模組的第一螢光與通過第二收光模組的第二螢光且進行合光而形成合光。於本發明之一或多個實施方式中，第一雷射光為藍光。According to an embodiment of the present invention, a laser projection light source includes at least a first laser light source module, a first light receiving module, a fluorescent wheel, a second light receiving module, and a light combining module. The first laser light source module emits a first laser light. The first laser light passes through the first light receiving module. The fluorescent wheel has a first side and a second side. The fluorescent wheel receives the first laser light, and converts the first laser light into a first fluorescent light and a second fluorescent light. The first side receives the first laser light passing through the first light receiving module and emits the first fluorescent light. The second side emits a second fluorescent light. After the first fluorescent light passes the first light receiving module and the second fluorescent light passes the second light receiving module, the optical axis of at least one of the first fluorescent light and the second fluorescent light is turned, and the first fluorescent light The sum of the number of turns with the optical axis of the second fluorescent light is at least twice. The light combining module receives the first fluorescent light passing through the first light receiving module and the second fluorescent light passing through the second light receiving module and combines light to form a combined light. In one or more embodiments of the present invention, the first laser light is blue light.

於本發明之一或多個實施方式中，第一螢光與第二螢光具有相同頻譜。In one or more embodiments of the present invention, the first fluorescent light and the second fluorescent light have the same frequency spectrum.

於本發明之一或多個實施方式中，第一螢光與第二螢光的亮度差異小於5%。In one or more embodiments of the present invention, the difference in brightness between the first fluorescent light and the second fluorescent light is less than 5%.

於本發明之一或多個實施方式中，第一螢光與第二螢光為紅光、綠光、黃光或其組合。In one or more embodiments of the present invention, the first fluorescent light and the second fluorescent light are red light, green light, yellow light, or a combination thereof.

於本發明之一或多個實施方式中，第一收光模組包含至少一分色鏡。分色鏡使雷射光通過分色鏡與反射第一螢光。In one or more embodiments of the present invention, the first light receiving module includes at least one dichroic mirror. The dichroic mirror passes the laser light through the dichroic mirror and reflects the first fluorescent light.

於本發明之一或多個實施方式中，第一收光模組包含至少一會聚模組。會聚模組會聚第一螢光。In one or more embodiments of the present invention, the first light receiving module includes at least one convergence module. The convergence module condenses the first fluorescent light.

於本發明之一或多個實施方式中，第二收光模組包含至少一反射鏡。反射鏡反射第二螢光。In one or more embodiments of the present invention, the second light receiving module includes at least one reflector. The mirror reflects the second fluorescent light.

於本發明之一或多個實施方式中，第二收光模組包含至少一會聚模組。會聚模組會聚第二螢光。In one or more embodiments of the present invention, the second light receiving module includes at least one convergence module. The convergence module condenses the second fluorescent light.

於本發明之一或多個實施方式中，合光模組包含積分柱(Integration Rod)與光路整理模組。積分柱具有開口且發射合光。光路整理模組使第一螢光與第二螢光在通過光路整理模組後，第一螢光的光軸與第二螢光的光軸的方向相同，且使第一螢光與第二螢光進入開口。In one or more embodiments of the present invention, the light combining module includes an integration rod and a light path finishing module. The integrating column has an opening and emits light. The light path finishing module enables the first fluorescent light and the second fluorescent light to pass through the light path finishing module, and the optical axis of the first fluorescent light and the second fluorescent light are in the same direction, and the first fluorescent light and the second fluorescent light are aligned. Fluorescence enters the opening.

於本發明之一或多個實施方式中，雷射投影光源更包含第二雷射光源模組。第二雷射光源模組發射第二雷射光，其中第二雷射光進入合光模組。In one or more embodiments of the present invention, the laser projection light source further includes a second laser light source module. The second laser light source module emits second laser light, wherein the second laser light enters the light combining module.

於本發明之一或多個實施方式中，第一雷射光通過螢光輪，使第一雷射光自第二側離開並進入第二收光模組，第二收光模組改變第一雷射光的光軸的方向，且使第一雷射光在離開第二收光模組後進入合光模組。In one or more embodiments of the present invention, the first laser light passes through the fluorescent wheel, so that the first laser light leaves the second side and enters the second light receiving module, and the second light receiving module changes the first laser light And the first laser light enters the light combining module after leaving the second light receiving module.

於本發明之一或多個實施方式中，螢光輪包含至少一第一螢光層，第一螢光層轉換第一雷射光為第一螢光與第二螢光。In one or more embodiments of the present invention, the fluorescent wheel includes at least a first fluorescent layer, and the first fluorescent layer converts the first laser light into the first fluorescent light and the second fluorescent light.

於本發明之一或多個實施方式中，螢光輪更包含至少一透明基板。第一螢光層設置於透明基板上。In one or more embodiments of the present invention, the fluorescent wheel further includes at least one transparent substrate. The first fluorescent layer is disposed on the transparent substrate.

於本發明之一或多個實施方式中，螢光輪更具有至少一第一部分，第一螢光層設置於第一部分。In one or more embodiments of the present invention, the fluorescent wheel further includes at least a first portion, and the first fluorescent layer is disposed on the first portion.

於本發明之一或多個實施方式中，螢光輪更具有至少一第二部分，其中第二部分為透明，且第一部分與第二部分依不同時序接收第一雷射光。In one or more embodiments of the present invention, the fluorescent wheel further includes at least a second portion, wherein the second portion is transparent, and the first portion and the second portion receive the first laser light at different timings.

於本發明之一或多個實施方式中，螢光輪更具有第三部分，螢光輪更包含至少一第二螢光層，第二螢光層設置於第三部分，其中第一部分與第三部分依不同時序接收第一雷射光，第一螢光層與第二螢光層依不同時序轉換第一雷射光，使第一螢光層與第二螢光層所發射的光線合光成為第一螢光與第二螢光。In one or more embodiments of the present invention, the fluorescent wheel further includes a third portion. The fluorescent wheel further includes at least a second fluorescent layer. The second fluorescent layer is disposed on the third portion, wherein the first portion and the third portion The first laser light is received at different timings, and the first fluorescent layer and the second fluorescent layer convert the first laser light at different timings, so that the light emitted by the first fluorescent layer and the second fluorescent layer becomes the first Fluorescent and second fluorescent.

根據本發明另一實施方式，一種雷射投影裝置包含前述之雷射投影光源、波長選擇器、至少一影像模組以及投影模組。波長選擇器接收合光，並發射第一色光、第二色光以及第三色光。影像模組接收第一色光、第二色光以及第三色光，並產生至少一影像光。投影模組接收影像光，並產生至少一投影光。According to another embodiment of the present invention, a laser projection device includes the aforementioned laser projection light source, a wavelength selector, at least one image module, and a projection module. The wavelength selector receives the combined light and emits the first color light, the second color light, and the third color light. The image module receives the first color light, the second color light, and the third color light, and generates at least one image light. The projection module receives image light and generates at least one projection light.

於本發明之一或多個實施方式中，影像模組的數量為三個，影像模組分別接收第一色光、第二色光以及第三色光且分別產生第一色影像光、第二色影像光以及第三色影像光，第一色影像光、第二色影像光以及第三色影像光合光後成為影像光。In one or more embodiments of the present invention, the number of image modules is three, and the image modules receive the first color light, the second color light, and the third color light and generate the first color image light and the second color, respectively. The image light and the third color image light, the first color image light, the second color image light, and the third color image light are combined to become image light.

於本發明之一或多個實施方式中，影像模組的數量為一個，波長選擇器依不同時序發射第一色光、第二色光以及第三色光，影像模組依不同時序接收第一色光、第二色光以及第三色光，並依不同時序產生影像光，投影模組依不同時序接收影像光，並依不同時序產生投影光。In one or more embodiments of the present invention, the number of image modules is one, the wavelength selector emits the first color light, the second color light, and the third color light at different timings, and the image module receives the first color at different timings. The light, the second color light, and the third color light generate image light at different timings. The projection module receives image light at different timings and generates projection light at different timings.

本發明上述實施方式藉由雷射投影光源的螢光輪省略反射層的設計，因而使一部分的螢光自螢光輪的第一側射出，另一部分的螢光自螢光輪的第二側射出，即螢光可由螢光輪的雙面出光。於是，因為沒有設置反射層，反射層吸收部份螢光的情況將不會發生，合光模組所接收的螢光可隨之增加，因而可以大幅提升雷射投影光源所發射的合光的亮度。In the foregoing embodiment of the present invention, the design of the reflective layer is omitted by the fluorescent wheel of the laser projection light source, so that part of the fluorescent light is emitted from the first side of the fluorescent wheel, and the other part of the fluorescent light is emitted from the second side of the fluorescent wheel, that is, Fluorescent light can be emitted from both sides of the fluorescent wheel. Therefore, because there is no reflection layer, the situation where the reflection layer absorbs part of the fluorescent light will not occur, and the fluorescence light received by the light combining module can be increased accordingly. Therefore, the combined light emitted by the laser projection light source can be greatly improved. brightness.

進一步來說，在螢光粉以自身為起點向四周發射螢光後，螢光可能會被其他的螢光粉吸收，而發生螢光自吸收發光的情況，因而使螢光輪的出光率下降。因為雷射投影光源的螢光輪省略反射層的設計，因此螢光到達螢光輪的第一側或第二側後，螢光將會直接離開螢光層。於是，螢光在螢光層中的平均路徑長度將會較短，螢光層較不易發生螢光自吸收發光，因此將能有效提升螢光層的發光效率。Further, after the fluorescent powder emits fluorescent light from its own starting point to the surroundings, the fluorescent light may be absorbed by other fluorescent powders, and the self-absorption of fluorescent light may occur, thereby reducing the luminous efficiency of the fluorescent wheel. Because the fluorescent wheel of the laser projection light source omits the design of the reflective layer, after the fluorescent light reaches the first side or the second side of the fluorescent wheel, the fluorescent light will leave the fluorescent layer directly. Therefore, the average path length of the fluorescent light in the fluorescent layer will be shorter, and the fluorescent layer is less prone to self-absorption and emission of the fluorescent light, so the luminous efficiency of the fluorescent layer can be effectively improved.

藉由前述兩種機制，雷射投影光源所發射的合光的亮度將能大幅提升。在一些實施方式中，相較於傳統雷射投影光源，雷射投影光源所發射的合光的亮度將能提升約20%至30%。By the aforementioned two mechanisms, the brightness of the combined light emitted by the laser projection light source can be greatly improved. In some embodiments, compared to a conventional laser projection light source, the brightness of the combined light emitted by the laser projection light source can be increased by about 20% to 30%.

以下將以圖式揭露本發明之複數個實施方式，為明確說明起見，許多實務上的細節將在以下敘述中一併說明。然而，應瞭解到，這些實務上的細節不應用以限制本發明。也就是說，在本發明部分實施方式中，這些實務上的細節是非必要的。此外，為簡化圖式起見，一些習知慣用的結構與元件在圖式中將以簡單示意的方式繪示之。In the following, a plurality of embodiments of the present invention will be disclosed graphically. For the sake of clarity, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner.

第1圖繪示依照本發明一實施方式之雷射投影光源100與其光路的示意圖。本發明不同實施方式提供一種雷射投影光源100。如第1圖所繪示，雷射投影光源100包含雷射光源模組111、收光模組120、螢光輪130、收光模組140以及合光模組150。FIG. 1 is a schematic diagram illustrating a laser projection light source 100 and an optical path thereof according to an embodiment of the present invention. Different embodiments of the present invention provide a laser projection light source 100. As shown in FIG. 1, the laser projection light source 100 includes a laser light source module 111, a light receiving module 120, a fluorescent wheel 130, a light receiving module 140 and a light combining module 150.

雷射光源模組111發射雷射光901。雷射光901通過收光模組120。螢光輪130具有第一側130a與第二側130b。螢光輪130接收雷射光901，且轉換部分的雷射光901為螢光903與螢光904。第一側130a接收通過收光模組120的雷射光901且發射螢光903。第二側130b發射螢光904以及穿透螢光輪130之雷射光901。螢光903具有第一光軸，螢光903可在收光模組120中被轉折，如轉折一次，使螢光903在通過收光模組120後，收光模組120改變第一光軸的方向。收光模組140接收螢光904，其中螢光904具有第二光軸，螢光904可在收光模組140中被轉折，如兩次，使螢光904在通過收光模組140後，收光模組140改變第二光軸的方向。合光模組150接收通過收光模組120的螢光903與通過收光模組140的螢光904且進行合光而形成合光905，其中螢光903、904在進入合光模組150時，第一光軸與第二光軸的角度差大於30度。在本實施方式中，第一光軸與第二光軸的角度差為約90度。The laser light source module 111 emits laser light 901. The laser light 901 passes through the light receiving module 120. The fluorescent wheel 130 has a first side 130a and a second side 130b. The fluorescent wheel 130 receives the laser light 901, and the converted laser light 901 is fluorescent light 903 and fluorescent light 904. The first side 130a receives the laser light 901 passing through the light receiving module 120 and emits fluorescent light 903. The second side 130b emits fluorescent light 904 and laser light 901 that penetrates the fluorescent wheel 130. The fluorescent light 903 has a first optical axis, and the fluorescent light 903 can be turned in the light receiving module 120. For example, once, the fluorescent light 903 passes the light receiving module 120, and the light receiving module 120 changes the first optical axis. Direction. The light receiving module 140 receives the fluorescent light 904, and the fluorescent light 904 has a second optical axis. The fluorescent light 904 can be turned in the light receiving module 140, for example, twice, so that the fluorescent light 904 passes through the light receiving module 140. The light receiving module 140 changes the direction of the second optical axis. The light combining module 150 receives the fluorescent light 903 passing through the light receiving module 120 and the fluorescent light 904 passing through the light receiving module 140 and combines them to form a combined light 905. The fluorescent lights 903 and 904 enter the light combining module 150. , The angle difference between the first optical axis and the second optical axis is greater than 30 degrees. In this embodiment, the angle difference between the first optical axis and the second optical axis is about 90 degrees.

進一步來說，雷射光901通過螢光輪130，使雷射光901自螢光輪130的第二側130b離開而進入收光模組140，雷射光901具有第三光軸，雷射光901可在收光模組140中被轉折，如轉折兩次，而在收光模組140改變第三光軸的方向，且使雷射光901在離開收光模組140後進入合光模組150。Further, the laser light 901 passes through the fluorescent wheel 130, so that the laser light 901 leaves the second side 130b of the fluorescent wheel 130 and enters the light receiving module 140. The laser light 901 has a third optical axis, and the laser light 901 can be received at The module 140 is turned, for example, twice, and the light receiving module 140 changes the direction of the third optical axis, and the laser light 901 enters the light combining module 150 after leaving the light receiving module 140.

第2圖繪示依照本發明一實施方式之螢光輪130的部分側視示意圖。如第2圖所繪示，螢光輪130包含螢光層131，螢光層131轉換雷射光901為螢光903與螢光904。FIG. 2 is a schematic side view of a part of the fluorescent wheel 130 according to an embodiment of the present invention. As shown in FIG. 2, the fluorescent wheel 130 includes a fluorescent layer 131, and the fluorescent layer 131 converts the laser light 901 into fluorescent light 903 and fluorescent light 904.

第3圖繪示依照傳統雷射投影光源的螢光輪810的部分側視示意圖。如第1圖、第2圖以及第3圖所繪示，在傳統的雷射投影光源中，螢光輪可能為穿透式螢光輪或反射式螢光輪，舉例來說，螢光輪810為反射式螢光輪。螢光輪810藉由其中的反射層812蒐集螢光層811所射出的螢光，因而使螢光992自螢光輪810的其中一側射出。由於雷射光射入螢光層811且激發螢光層811中的螢光粉811a後，螢光粉811a會以自身為起點向四周發射螢光992，因此螢光992會以不同角度入射反射層812。在螢光992入射反射層812的入射角角度大於一定角度的時候(舉例來說，60度)，反射層812的反射率將會有一定程度地下降。換句話說，反射層812將會吸收部份的螢光992。為了避免類似的情況發生，雷射投影光源100的螢光輪130省略反射層的設計，因而使螢光903自螢光輪130的第一側130a射出，螢光904自螢光輪130的第二側130b射出。於是，因為沒有設置反射層，反射層吸收部份螢光903、904的情況將不會發生，合光模組150將能接收更多的螢光903、904，因而可以大幅提升雷射投影光源100所發射的合光905的亮度。FIG. 3 is a schematic partial side view of a fluorescent wheel 810 according to a conventional laser projection light source. As shown in Figures 1, 2, and 3, in conventional laser projection light sources, the fluorescent wheel may be a transmissive fluorescent wheel or a reflective fluorescent wheel. For example, the fluorescent wheel 810 is a reflective type. Fluorescent wheel. The fluorescent wheel 810 collects the fluorescent light emitted from the fluorescent layer 811 through the reflective layer 812 therein, so that the fluorescent light 992 is emitted from one side of the fluorescent wheel 810. Since the laser light enters the fluorescent layer 811 and excites the fluorescent powder 811a in the fluorescent layer 811, the fluorescent powder 811a emits fluorescent light 992 around from its own starting point, so the fluorescent light 992 enters the reflective layer at different angles. 812. When the angle of incidence of the fluorescent light 992 incident on the reflective layer 812 is greater than a certain angle (for example, 60 degrees), the reflectance of the reflective layer 812 will decrease to a certain extent. In other words, the reflective layer 812 will absorb part of the fluorescent light 992. In order to avoid similar situations, the fluorescent wheel 130 of the laser projection light source 100 omits the design of the reflective layer, so that the fluorescent light 903 is emitted from the first side 130a of the fluorescent wheel 130, and the fluorescent light 904 is emitted from the second side 130b of the fluorescent wheel 130 Shoot out. Therefore, because no reflective layer is provided, the situation where the reflective layer absorbs part of the fluorescent light 903, 904 will not occur, and the light combining module 150 will be able to receive more fluorescent light 903, 904, which can greatly improve the laser projection light source. 100 The brightness of the combined light 905 emitted.

進一步來說，如第2圖與第3圖所繪示，在螢光粉131a、811a以自身為起點向四周發射螢光991、992後，螢光991、992可能會被其他的螢光粉吸收，而發生螢光自吸收發光的情況，此部分是為能量的損失，因而使螢光輪130、810的出光率下降。在傳統的雷射投影光源中，螢光992有可能會通過部分螢光層811，然後被反射層812反射，之後再折回螢光層811。對比之下，因為雷射投影光源100的螢光輪130省略反射層的設計，因此螢光991到達第一側130a或第二側130b後，螢光將會直接離開螢光層131。於是，假設在相同厚度的螢光層之下，相較於螢光992在螢光層811中的平均路徑長度，螢光991在螢光層131中的平均路徑長度將會相對較短，因此相較於傳統雷射投影光源，螢光層131較不易發生螢光自吸收發光，因此將能有效控制螢光層131的發光效率。Further, as shown in FIG. 2 and FIG. 3, after the phosphors 131a and 811a emit fluorescent light 991 and 992 around from their own starting point, the fluorescent light 991 and 992 may be replaced by other phosphors. Absorption, and the occurrence of self-absorption of fluorescent light, this part is the loss of energy, so that the luminous efficiency of the fluorescent wheels 130, 810 decreased. In a conventional laser projection light source, the fluorescent light 992 may pass through a portion of the fluorescent layer 811, and then be reflected by the reflective layer 812, and then be folded back into the fluorescent layer 811. In contrast, because the fluorescent wheel 130 of the laser projection light source 100 omits the design of the reflective layer, after the fluorescent light 991 reaches the first side 130a or the second side 130b, the fluorescent light will leave the fluorescent layer 131 directly. Therefore, assuming that under the same thickness of the fluorescent layer, compared with the average path length of the fluorescent layer 992 in the fluorescent layer 811, the average path length of the fluorescent layer 991 in the fluorescent layer 131 will be relatively short, so Compared with the conventional laser projection light source, the fluorescent layer 131 is less prone to self-absorption of fluorescent light, so it can effectively control the luminous efficiency of the fluorescent layer 131.

藉由前述機制，雷射投影光源100所發射的合光905的亮度將能大幅提升。在一些實施方式中，相較於傳統雷射投影光源，雷射投影光源100所發射的合光905的亮度將能提升約20%至30%。然而，就整體雷射投影光源100而言，其螢光903、904經收光模組120、140後未必需要經由合光模組150合光，其當然也可以分開為兩個光路徑而為後端所對應的波長選擇器210及影像模組220進行處理，其同樣能達到本發明之功效。By the aforementioned mechanism, the brightness of the combined light 905 emitted by the laser projection light source 100 can be greatly improved. In some embodiments, compared to the conventional laser projection light source, the brightness of the combined light 905 emitted by the laser projection light source 100 can be increased by about 20% to 30%. However, as far as the overall laser projection light source 100 is concerned, the fluorescent lights 903 and 904 after receiving the light receiving modules 120 and 140 do not necessarily need to be combined by the light combining module 150. Of course, they can also be divided into two light paths. The wavelength selector 210 and the image module 220 corresponding to the back end are processed, which can also achieve the effect of the present invention.

雷射光901是為用以激發螢光層131之激發光，較佳地應是由較短波長的雷射光被螢光粉131a轉化為具有較長波長之受激光。具體而言，雷射光901為藍光或紫外光，而螢光903、904即為所述受激光。應了解到，以上所舉之雷射光901的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇雷射光901的具體實施方式。The laser light 901 is used to excite the excitation light of the fluorescent layer 131. Preferably, the laser light with a shorter wavelength is converted by the phosphor 131a into a laser beam with a longer wavelength. Specifically, the laser light 901 is blue light or ultraviolet light, and the fluorescent lights 903 and 904 are the received laser light. It should be understood that the above-mentioned specific implementations of the laser light 901 are merely examples and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains should flexibly select the specific implementation of the laser light 901 according to actual needs the way.

具體而言，螢光903與螢光904具有相同頻譜，且螢光903與螢光904的亮度差異小於5%。螢光903與螢光904為紅光、綠光、黃光或其組合。應了解到，以上所舉之螢光903與螢光904的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇螢光903與螢光904的具體實施方式。Specifically, the fluorescent light 903 and the fluorescent light 904 have the same frequency spectrum, and the brightness difference between the fluorescent light 903 and the fluorescent light 904 is less than 5%. The fluorescent light 903 and the fluorescent light 904 are red light, green light, yellow light, or a combination thereof. It should be understood that the specific implementations of the fluorescent light 903 and fluorescent light 904 mentioned above are merely examples and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains should flexibly select fluorescent light according to actual needs. Specific implementations of 903 and fluorescent 904.

如第2圖所繪示，螢光層131為將螢光粉131a燒結於其中的玻璃塊材，但不限於此。在其他實施方式中，螢光層131可為其他透光材質。As shown in FIG. 2, the fluorescent layer 131 is a glass block material in which the fluorescent powder 131 a is sintered, but is not limited thereto. In other embodiments, the fluorescent layer 131 may be other light-transmitting materials.

第4圖至第9圖繪示依照本發明不同實施方式之螢光輪130的部分側視示意圖。如第4圖所繪示，本實施方式的螢光輪130大致與第2圖的螢光輪130相同，以下主要將描述差異處。4 to 9 are schematic partial side views of the fluorescent wheel 130 according to different embodiments of the present invention. As shown in FIG. 4, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 2. Differences will be mainly described below.

螢光輪130更包含透明基板132。螢光層131設置於透明基板132上。具體而言，透明基板132位於第一側130a，且螢光層131位於第二側130b。進一步來說，螢光輪130更包含抗反射膜133。抗反射膜133設置於透明基板132相對於螢光層131的一側，也就是雷射光901進入螢光輪130的入光側，以提升透明基板132的透光能力。The fluorescent wheel 130 further includes a transparent substrate 132. The fluorescent layer 131 is disposed on the transparent substrate 132. Specifically, the transparent substrate 132 is located on the first side 130a, and the fluorescent layer 131 is located on the second side 130b. Further, the fluorescent wheel 130 further includes an anti-reflection film 133. The anti-reflection film 133 is disposed on a side of the transparent substrate 132 opposite to the fluorescent layer 131, that is, the light incident side of the laser light 901 entering the fluorescent wheel 130, so as to improve the light transmitting ability of the transparent substrate 132.

具體而言，螢光層131為混雜螢光粉131a於其中的透明膠體，但不限於此。在其他實施方式中，螢光層131可為其他透光材質。Specifically, the fluorescent layer 131 is a transparent colloid in which the fluorescent powder 131a is mixed, but it is not limited thereto. In other embodiments, the fluorescent layer 131 may be other light-transmitting materials.

具體而言，透明基板132之材質可為玻璃，但不限於此。在其他實施方式中，透明基板132可為其他透明材質。Specifically, the material of the transparent substrate 132 may be glass, but is not limited thereto. In other embodiments, the transparent substrate 132 may be other transparent materials.

如第5圖所繪示，本實施方式的螢光輪130大致與第4圖的螢光輪130相同，主要差異在於，螢光層131位於第一側130a，且透明基板132位於第二側130b。另外，抗反射膜133設置於透明基板132相對於螢光層131的一側，也就是螢光904的出光側，以提升螢光輪130的出光效率。As shown in FIG. 5, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 4. The main difference is that the fluorescent layer 131 is located on the first side 130 a and the transparent substrate 132 is located on the second side 130 b. In addition, the anti-reflection film 133 is disposed on a side of the transparent substrate 132 opposite to the fluorescent layer 131, that is, a light emitting side of the fluorescent light 904, so as to improve the light emitting efficiency of the fluorescent wheel 130.

如第6圖所繪示，本實施方式的螢光輪130大致與第2圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 6, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 2. The differences will be mainly described below.

螢光輪130更包含二透明基板132a、132b。螢光層131夾設於透明基板132a與透明基板132b之間。具體而言，透明基板132a位於第一側130a，且透明基板132b位於第二側130b。進一步來說，螢光輪130更包含抗反射膜133a、133b。抗反射膜133a設置於透明基板132a相對於螢光層131的一側，抗反射膜133b設置於透明基板132b相對於螢光層131的一側。The fluorescent wheel 130 further includes two transparent substrates 132a and 132b. The fluorescent layer 131 is interposed between the transparent substrate 132a and the transparent substrate 132b. Specifically, the transparent substrate 132a is located on the first side 130a, and the transparent substrate 132b is located on the second side 130b. Furthermore, the fluorescent wheel 130 further includes anti-reflection films 133a and 133b. The anti-reflection film 133a is provided on the side of the transparent substrate 132a opposite to the fluorescent layer 131, and the anti-reflection film 133b is provided on the side of the transparent substrate 132b opposite to the fluorescent layer 131.

如第7圖所繪示，本實施方式的螢光輪130大致與第5圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 7, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 5. Differences will be mainly described below.

螢光輪130更包含螢光層131b。螢光層131與螢光層131b分別設置於透明基板132的兩側。具體而言，螢光層131位於第一側130a，且螢光層131b位於第二側130b。另外，螢光輪130沒有包含抗反射膜133。在其他的應用上，螢光層131與螢光層131b可以是相同或不同的螢光材料，使螢光903與螢光904的頻譜範圍相同或具有差異，使在後端合光905將可以被調整成具有所想要的波長範圍或強度等光學性質。The fluorescent wheel 130 further includes a fluorescent layer 131b. The fluorescent layer 131 and the fluorescent layer 131b are disposed on both sides of the transparent substrate 132, respectively. Specifically, the fluorescent layer 131 is located on the first side 130a, and the fluorescent layer 131b is located on the second side 130b. In addition, the fluorescent wheel 130 does not include the anti-reflection film 133. In other applications, the fluorescent layer 131 and the fluorescent layer 131b may be the same or different fluorescent materials, so that the spectral ranges of the fluorescent 903 and the fluorescent 904 are the same or different, so that the combined light 905 at the back end will be able to It is adjusted to have optical properties such as a desired wavelength range or intensity.

如第8圖所繪示，本實施方式的螢光輪130大致與第4圖的螢光輪130相同，主要差異在於，抗反射膜133c可以藉由鍍膜或其他可能的形成方式設置於螢光層131與透明基板132之間，其中抗反射膜133c的光學特性與螢光層131和透明基板132匹配，因而得以處理螢光層131和透明基板132間的抗反射需求。As shown in FIG. 8, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 4. The main difference is that the anti-reflection film 133 c can be provided on the fluorescent layer 131 by plating or other possible formation methods. With the transparent substrate 132, the optical characteristics of the anti-reflection film 133c are matched with the fluorescent layer 131 and the transparent substrate 132, so that the anti-reflection requirements between the fluorescent layer 131 and the transparent substrate 132 can be processed.

如第9圖所繪示，本實施方式的螢光層131大致與第2圖的螢光層131相同，主要差異在於，抗反射膜133d可以藉由鍍膜或其他可能的形成方式設置於螢光層131的兩側，抗反射膜133d的光學特性與螢光層131和空氣匹配，因而得以提升螢光層131的出光能力。As shown in FIG. 9, the fluorescent layer 131 in this embodiment is substantially the same as the fluorescent layer 131 in FIG. 2. The main difference is that the anti-reflection film 133 d can be provided on the fluorescent film by plating or other possible formation methods. On both sides of the layer 131, the optical characteristics of the anti-reflection film 133d are matched with the fluorescent layer 131 and the air, so that the light-emitting ability of the fluorescent layer 131 can be improved.

類似第8圖與第9圖，第5圖至第7圖的螢光輪130亦額外設置抗反射膜133c或抗反射膜133d於螢光層的兩側或者螢光層與透明基板之間。Similar to FIGS. 8 and 9, the fluorescent wheel 130 in FIGS. 5 to 7 is additionally provided with an anti-reflection film 133 c or an anti-reflection film 133 d on both sides of the fluorescent layer or between the fluorescent layer and the transparent substrate.

第10圖至第15圖繪示依照本發明不同實施方式之螢光輪130的前視示意圖。如第10圖所繪示，螢光層131佈滿整個螢光輪130。另外，雷射光901(參照第1圖)入射螢光輪130的位置為點138a，而虛線部分則為當螢光輪130旋轉時雷射光901照射於螢光輪130之軌跡。在其他變化的態樣上，螢光層131並不一定是需要佈滿整個螢光輪130，其也可以是為分布於所述軌跡上的環型分佈方式，同樣可以達成本發明之目的。10 to 15 are schematic front views of the fluorescent wheel 130 according to different embodiments of the present invention. As shown in FIG. 10, the fluorescent layer 131 covers the entire fluorescent wheel 130. In addition, the position where the laser light 901 (see FIG. 1) enters the fluorescent wheel 130 is the point 138a, and the dotted line is the trajectory of the laser light 901 shining on the fluorescent wheel 130 when the fluorescent wheel 130 rotates. In other changed aspects, the fluorescent layer 131 does not necessarily need to cover the entire fluorescent wheel 130, and it may also be a ring-shaped distribution method distributed on the trajectory, which can also achieve the purpose of the present invention.

如第11圖所繪示，本實施方式的螢光輪130大致與第10圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 11, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 10. Differences will be mainly described below.

雷射光源模組111(參照第1圖)的數量為複數個，因此雷射光901(參照第1圖)的數量亦為複數個。其中一個雷射光901入射螢光輪130的位置為點138a，另一個雷射光901入射螢光輪130的位置為點138b。點138a與螢光輪130之中心的距離和點138b與螢光輪130之中心的距離相同。需要注意的是，在其他實施方式中，二雷射光901入射螢光輪130的能量或頻譜可以不同，或依時序發射光線，此外雷射光901入射螢光輪130的位置可以不只點138a、138b，且雷射光901入射螢光輪130的不同位置與螢光輪130之中心的距離可能相同或不同。Since the number of the laser light source modules 111 (refer to FIG. 1) is plural, the number of the laser light 901 (refer to FIG. 1) is also plural. A position where one laser light 901 enters the fluorescent wheel 130 is point 138a, and a position where the other laser light 901 enters the fluorescent wheel 130 is point 138b. The distance between the point 138a and the center of the fluorescent wheel 130 and the distance between the point 138b and the center of the fluorescent wheel 130 are the same. It should be noted that, in other embodiments, the energy or frequency spectrum of the two laser lights 901 incident on the fluorescent wheel 130 may be different, or light may be emitted in a time sequence. In addition, the positions of the laser light 901 incident on the fluorescent wheel 130 may not only be points 138a, 138b, and The distance between different positions of the laser light 901 incident on the fluorescent wheel 130 and the center of the fluorescent wheel 130 may be the same or different.

進一步來說，點138a、138b分別設置於螢光輪130的左右兩側。於是，在雷射投影光源100運作且螢光輪130在轉動的時候，剛通過點138a、138b的螢光層131的部分會在螢光輪130轉半圈之後才會再通過點138a、138b，因而使螢光層131的各部分通過點138a、138b的時間間隔可以延長，進而避免螢光層131的各部分被雷射光901燒壞，在類似的應用上，投至點138a、138b上的雷射光源模組111更可以按時序發光。應了解到，以上所舉之點138a、138b的位置僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇點138a、138b的位置。Further, the points 138 a and 138 b are respectively disposed on the left and right sides of the fluorescent wheel 130. Therefore, when the laser projection light source 100 is operating and the fluorescent wheel 130 is rotating, the portion of the fluorescent layer 131 that has just passed the points 138a and 138b will not pass through the points 138a and 138b after the fluorescent wheel 130 has made half a revolution. The time interval between passing each part of the fluorescent layer 131 through the points 138a and 138b can be extended, so as to prevent each part of the fluorescent layer 131 from being burned by the laser light 901. The light source module 111 can emit light according to timing. It should be understood that the positions of the points 138a and 138b mentioned above are only examples and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs should flexibly select the positions of the points 138a and 138b according to actual needs.

如第12圖所繪示，本實施方式的螢光輪130大致與第11圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 12, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 11, and the differences will be mainly described below.

點138a與螢光輪130之中心的距離大於點138b與螢光輪130之中心的距離。因為點138a與螢光輪130之中心的距離和點138b與螢光輪130之中心的距離不同，所以通過點138a的螢光層131的部分不會通過點138b，通過點138b的螢光層131的部分不會通過點138a。於是，螢光層131的各部分通過點138a、138b的時間間隔可以進一步延長，進而避免螢光層131的各部分被雷射光901燒壞。The distance between the point 138a and the center of the fluorescent wheel 130 is greater than the distance between the point 138b and the center of the fluorescent wheel 130. Because the distance between the point 138a and the center of the fluorescent wheel 130 and the distance between the point 138b and the center of the fluorescent wheel 130 are different, the portion of the fluorescent layer 131 passing through the point 138a does not pass through the point 138b and the fluorescent layer 131 passing through the point 138b. Portions will not pass through point 138a. Therefore, the time interval of passing the points 138a, 138b of each part of the fluorescent layer 131 can be further extended, thereby preventing each part of the fluorescent layer 131 from being burned by the laser light 901.

第13圖至第15圖的螢光輪130大致與第10圖至第12圖的螢光輪130相同，其主要差異在於，螢光輪130具有不同部分，不同部分可能設置不同螢光層或沒有設置螢光層。The fluorescent wheel 130 in FIGS. 13 to 15 is approximately the same as the fluorescent wheel 130 in FIGS. 10 to 12. The main difference is that the fluorescent wheel 130 has different parts, and different parts may have different fluorescent layers or no fluorescent layer. Light layer.

如第13圖所繪示，本實施方式的螢光輪130大致與第10圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 13, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 10, and the differences will be mainly described below.

以螢光輪130的中心為基準，將螢光輪130切分為其形狀為扇形的部分139a、139b、139c、139d。螢光層131設置於部分139a。螢光輪130更包含螢光層131b、131c。螢光層131b設置於部分139b，螢光層131c設置於部分139c。部分139d為透明。當雷射光源模組111 持續發出雷射光901(參照第1圖)且螢光輪130在轉動的時候，部分139a、139b、139c、139d依不同時序接收雷射光901。於是，螢光層131、131b、131c依不同時序轉換雷射光901，且螢光層131、131b、131c會分別發射不同或相同的螢光，這些螢光將會合光而成為螢光903與螢光904。在部分139d接收雷射光901的時候，雷射光901將會穿透螢光輪130的部分139d。With the center of the fluorescent wheel 130 as a reference, the fluorescent wheel 130 is cut into sections 139a, 139b, 139c, and 139d having a fan shape. The fluorescent layer 131 is disposed on the portion 139a. The fluorescent wheel 130 further includes fluorescent layers 131b and 131c. A fluorescent layer 131b is provided on the portion 139b, and a fluorescent layer 131c is provided on the portion 139c. Portion 139d is transparent. When the laser light source module 111 continues to emit laser light 901 (refer to FIG. 1) and the fluorescent wheel 130 is rotating, the parts 139a, 139b, 139c, and 139d receive the laser light 901 at different timings. Therefore, the fluorescent layers 131, 131b, and 131c convert the laser light 901 at different timings, and the fluorescent layers 131, 131b, and 131c respectively emit different or the same fluorescent light, and these fluorescent lights will be combined into fluorescent light 903 and fluorescent light. Light 904. When the part 139d receives the laser light 901, the laser light 901 will penetrate the part 139d of the fluorescent wheel 130.

具體而言，螢光層131、131b、131c所發射的螢光可為紅光、綠光、黃光或其組合。更進一步來說，螢光層131、131b、131c所發射的螢光的其中兩個或三個可為兩種或三種具有不同頻譜的紅光、兩種或三種具有不同頻譜的綠光或者兩種或三種具有不同頻譜的黃光。於是，螢光903與螢光904在後端合光後將可以被調整成具有所想要的頻譜。Specifically, the fluorescent light emitted by the fluorescent layers 131, 131b, and 131c may be red, green, yellow, or a combination thereof. Furthermore, two or three of the fluorescent lights emitted by the fluorescent layers 131, 131b, and 131c may be two or three kinds of red light having different spectrums, two or three kinds of green light having different spectrums, or two One or three yellow lights with different spectrums. Therefore, after the fluorescent light 903 and the fluorescent light 904 are combined at the back end, they can be adjusted to have a desired spectrum.

如第14圖所繪示，本實施方式的螢光輪130大致與第11圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 14, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 11, and the differences will be mainly described below.

以螢光輪130的中心為基準，將螢光輪130切分為其形狀為扇形的兩個部分139a、兩個部分139b、兩個部分139c與兩個部分139d。螢光層131設置於部分139a。螢光層131b設置於部分139b，螢光層131c設置於部分139c。部分139d為透明。部分139a、139b、139c、139d依不同時序接收雷射光901(參照第1圖)。於是，螢光層131、131b、131c依不同時序轉換雷射光901，且螢光層131、131b、131c會分別發射不同或相同的螢光，這些螢光將會合光而成為螢光903與螢光904。在部分139d接收雷射光901的時候，雷射光901將會穿透螢光輪130的部分139d。Based on the center of the fluorescent wheel 130, the fluorescent wheel 130 is cut into two parts 139a, two parts 139b, two parts 139c, and two parts 139d having a fan shape. The fluorescent layer 131 is disposed on the portion 139a. A fluorescent layer 131b is provided on the portion 139b, and a fluorescent layer 131c is provided on the portion 139c. Portion 139d is transparent. The sections 139a, 139b, 139c, and 139d receive the laser light 901 at different timings (see FIG. 1). Therefore, the fluorescent layers 131, 131b, and 131c convert the laser light 901 at different timings, and the fluorescent layers 131, 131b, and 131c respectively emit different or the same fluorescent light, and these fluorescent lights will be combined into fluorescent light 903 and fluorescent light. Light 904. When the part 139d receives the laser light 901, the laser light 901 will penetrate the part 139d of the fluorescent wheel 130.

具體而言，螢光層131、131b、131c所發射的螢光可為紅光、綠光、黃光或其組合。更進一步來說，螢光層131、131b、131c所發射的螢光的其中兩個或三個可為兩種或三種具有不同頻譜的紅光、兩種或三種具有不同頻譜的綠光或者兩種或三種具有不同頻譜的黃光。Specifically, the fluorescent light emitted by the fluorescent layers 131, 131b, and 131c may be red, green, yellow, or a combination thereof. Furthermore, two or three of the fluorescent lights emitted by the fluorescent layers 131, 131b, and 131c may be two or three kinds of red light having different spectrums, two or three kinds of green light having different spectrums, or two One or three yellow lights with different spectrums.

如第15圖所繪示，本實施方式的螢光輪130大致與第14圖的螢光輪130相同，以下主要將描述差異處。As shown in FIG. 15, the fluorescent wheel 130 in this embodiment is substantially the same as the fluorescent wheel 130 in FIG. 14. Differences will be mainly described below.

點138a與螢光輪130之中心的距離大於點138b與螢光輪130之中心的距離。因為點138a與螢光輪130之中心的距離和點138b與螢光輪130之中心的距離不同，所以通過點138a的螢光層131的部分不會通過點138b，通過點138b的螢光層131的部分不會通過點138a。The distance between the point 138a and the center of the fluorescent wheel 130 is greater than the distance between the point 138b and the center of the fluorescent wheel 130. Because the distance between the point 138a and the center of the fluorescent wheel 130 and the distance between the point 138b and the center of the fluorescent wheel 130 are different, the portion of the fluorescent layer 131 passing through the point 138a does not pass through the point 138b and the fluorescent layer 131 passing through the point 138b. Portions will not pass through point 138a.

需要注意的是，螢光輪130中不同部分的位置配置未必需要依照前述實施方式。舉例來說，在一些實施方式中，部分139a中較靠近螢光輪130之中心的部分與較遠離螢光輪130之中心的部分可以再切分為兩個部分，於是部分139a中較靠近螢光輪130之中心的部分可以通過點138b但是沒辦法通過點138a，部分139a中較遠離螢光輪130之中心的部分可以通過點138a但是沒辦法通過點138b。部分139a亦可以與螢光輪130之中心的距離為基準而切分為三個以上的部分。部分139b、139c、139d亦可切分為多個部分。It should be noted that the position configuration of different parts in the fluorescent wheel 130 does not necessarily need to be in accordance with the foregoing embodiment. For example, in some embodiments, the part of part 139a closer to the center of the fluorescent wheel 130 and the part farther from the center of the fluorescent wheel 130 may be further divided into two parts, so the part 139a is closer to the fluorescent wheel 130 The center part can pass through the point 138b but cannot pass through the point 138a. The part of the part 139a farther from the center of the fluorescent wheel 130 can pass through the point 138a but cannot pass through the point 138b. The portion 139a may be divided into three or more portions based on the distance from the center of the fluorescent wheel 130. Parts 139b, 139c, and 139d can also be divided into multiple parts.

第16圖與第17圖繪示依照本發明不同實施方式之螢光輪130的前視示意圖。如第16圖所繪示，螢光輪130更包含馬達134與上套環135。馬達134設置於螢光輪130的中心。螢光層131環繞馬達134。上套環135設置於馬達134與螢光層131之間，因而使馬達134固定於螢光層131。可以添加材料到上套環135上或移除上套環135上的部分材料，因而調整螢光輪130的轉動平衡。16 and 17 are schematic front views of a fluorescent wheel 130 according to different embodiments of the present invention. As shown in FIG. 16, the fluorescent wheel 130 further includes a motor 134 and an upper collar 135. The motor 134 is disposed at the center of the fluorescent wheel 130. The fluorescent layer 131 surrounds the motor 134. The upper collar 135 is disposed between the motor 134 and the fluorescent layer 131, so that the motor 134 is fixed to the fluorescent layer 131. Material can be added to or removed from the upper collar 135, and the rotation balance of the fluorescent wheel 130 can be adjusted.

如第17圖所繪示，螢光輪130更包含馬達134、上套環135以及剛性板材136。馬達134固定於剛性板材136，螢光層131環繞剛性板材136。上套環135設置於剛性板材136與螢光層131之間，因而使剛性板材136固定於螢光層131。As shown in FIG. 17, the fluorescent wheel 130 further includes a motor 134, an upper collar 135, and a rigid plate 136. The motor 134 is fixed to the rigid plate 136, and the fluorescent layer 131 surrounds the rigid plate 136. The upper collar 135 is disposed between the rigid plate 136 and the fluorescent layer 131, so that the rigid plate 136 is fixed to the fluorescent layer 131.

需要注意的是，在一些實施方式中，螢光層131亦可以被切分為不同部分，不同部分可以設置有不同螢光層，同時一些部分可為透明。It should be noted that, in some embodiments, the fluorescent layer 131 may also be divided into different parts, different parts may be provided with different fluorescent layers, and some parts may be transparent.

再回到第1圖，如第1圖所繪示，收光模組120包含分色鏡121與會聚模組122。在雷射光源模組111發射雷射光901後，雷射光901將會通過分色鏡121與會聚模組122而入射螢光輪130。在螢光輪130的第一側130a發射螢光903後，會聚模組122會聚螢光903。然後，分色鏡121反射螢光903，讓螢光903在分色鏡121處轉折，以改變螢光903的第一光軸的方向。具體而言，螢光903入射分色鏡121的角度小於約60度(在本實施方式中，螢光903入射分色鏡121的角度為約45度)，以避免分色鏡121吸收螢光903的情況發生。Returning to FIG. 1 again, as shown in FIG. 1, the light receiving module 120 includes a dichroic mirror 121 and a convergence module 122. After the laser light source module 111 emits the laser light 901, the laser light 901 will enter the fluorescent wheel 130 through the dichroic mirror 121 and the convergence module 122. After the fluorescent light 903 is emitted from the first side 130a of the fluorescent wheel 130, the convergence module 122 condenses the fluorescent light 903. Then, the dichroic mirror 121 reflects the fluorescent light 903, and the fluorescent light 903 is turned at the dichroic mirror 121 to change the direction of the first optical axis of the fluorescent light 903. Specifically, the angle at which the fluorescent light 903 enters the dichroic mirror 121 is less than about 60 degrees (in this embodiment, the angle at which the fluorescent 903 enters the dichroic mirror 121 is about 45 degrees) to prevent the dichroic mirror 121 from absorbing fluorescent light. Case 903 happened.

具體而言，會聚模組122包含至少一會聚透鏡。需要注意的是，因為螢光粉會以自身為起點向四周發散螢光903，所以會聚模組122與螢光輪130之間的光路的長度宜視發散情況而調整，以使會聚模組122可以有效會聚螢光903。Specifically, the convergence module 122 includes at least one convergence lens. It should be noted that, since the fluorescent powder will emit fluorescent light 903 from its own starting point, the length of the optical path between the convergence module 122 and the fluorescent wheel 130 should be adjusted according to the divergence, so that the convergence module 122 can Effectively condenses fluorescent light 903.

另外，收光模組120的內部光路配置並不限於前述。舉例來說，在一些實施方式中，在螢光輪130的第一側130a發射螢光903後，先由分色鏡121反射螢光903。然後，會聚模組122會聚螢光903後送往合光模組150。另外，在一些實施例中，雷射光901僅會通過分色鏡121而不會通過會聚模組122。In addition, the internal optical path configuration of the light receiving module 120 is not limited to the foregoing. For example, in some embodiments, after the fluorescent light 903 is emitted from the first side 130a of the fluorescent wheel 130, the dichroic mirror 121 first reflects the fluorescent light 903. Then, the convergence module 122 converges the fluorescent light 903 and sends it to the light combining module 150. In addition, in some embodiments, the laser light 901 only passes through the dichroic mirror 121 and does not pass through the convergence module 122.

收光模組140包含反射鏡141、142與會聚模組143。在螢光輪130的第二側130b發射螢光904後，反射鏡141、142依序反射雷射光901與螢光904，且反射鏡141、142改變螢光904的第一光軸的方向與雷射光901的第三光軸的方向，即螢光904與雷射光901過兩次轉折後進入會聚模組143。然後，會聚模組143會聚螢光904，雷射光901通過會聚模組143。具體而言，螢光904入射反射鏡141、142的角度小於約60度(在本實施方式中，螢光904入射反射鏡141、142的角度為約45度)，以避免反射鏡141、142吸收螢光904的情況發生。在其他變化的態樣上，所述反射鏡141、142也可以視實際需求選用針對雷射光901及螢光904之特定波長範圍對應穿透或反射之分色鏡，以調整後端合光905的光學性質。The light collection module 140 includes reflectors 141 and 142 and a convergence module 143. After the fluorescent light 904 is emitted from the second side 130b of the fluorescent wheel 130, the reflecting mirrors 141 and 142 sequentially reflect the laser light 901 and the fluorescent light 904, and the reflecting mirrors 141 and 142 change the direction of the first optical axis and the lightning of the fluorescent light 904. The direction of the third optical axis of the emitted light 901, that is, the fluorescent light 904 and the laser light 901 make two turns and enter the convergence module 143. Then, the convergence module 143 condenses the fluorescent light 904 and the laser light 901 passes through the convergence module 143. Specifically, the angle at which the fluorescent light 904 enters the mirrors 141 and 142 is less than about 60 degrees (in this embodiment, the angle at which the fluorescent 904 enters the mirrors 141 and 142 is about 45 degrees) to avoid the reflection mirrors 141 and 142. A situation in which the fluorescent light 904 is absorbed occurs. In other changes, the reflecting mirrors 141 and 142 can also be selected according to the actual needs of the specific wavelength range of laser 901 and fluorescent 904 dichroic mirror corresponding to transmission or reflection, to adjust the rear-end light 905 Optical properties.

具體而言，會聚模組143包含至少一會聚透鏡。需要注意的是，因為螢光粉會以自身為起點向四周發散螢光903，所以會聚模組143與螢光輪130之間的光路的長度宜視發散情況而調整，以使會聚模組143可以有效會聚螢光904。Specifically, the convergence module 143 includes at least one convergence lens. It should be noted that, since the phosphor will emit fluorescent light 903 from its own starting point, the length of the optical path between the convergence module 143 and the fluorescent wheel 130 should be adjusted according to the divergence condition, so that the convergence module 143 can Effectively converges the fluorescent light 904.

另外，收光模組140的內部光路配置並不限於前述。舉例來說，在一些實施方式中，在螢光輪130的第二側130b發射螢光904後，會聚模組143會聚螢光904，且雷射光901通過會聚模組143。然後，反射鏡141、142依序反射雷射光901與螢光904。In addition, the internal optical path configuration of the light receiving module 140 is not limited to the foregoing. For example, in some embodiments, after the fluorescent light 904 is emitted from the second side 130b of the fluorescent wheel 130, the condensing module 143 condenses the fluorescent 904, and the laser light 901 passes through the condensing module 143. Then, the reflecting mirrors 141 and 142 sequentially reflect the laser light 901 and the fluorescent light 904.

第18圖與第19圖繪示依照本發明不同實施方式之合光模組150的側視示意圖。如第18圖所繪示，合光模組150包含光路整理模組151與積分柱(Integration Rod)152。積分柱152具有開口152o且於出口處發射合光905。光路整理模組151使雷射光901與螢光903、904在通過光路整理模組151後，螢光903的第一光軸、螢光904的第二光軸以及雷射光901的第三光軸的方向相同，且使雷射光901與螢光903、904進入開口152o。然後，在積分柱152均勻混合進入開口152o的雷射光901與螢光903、904後，積分柱152發射合光905。18 and 19 are schematic side views of a light combining module 150 according to different embodiments of the present invention. As shown in FIG. 18, the light combining module 150 includes a light path finishing module 151 and an integration rod 152. The integrating column 152 has an opening 152o and emits a combined light 905 at the exit. The light path finishing module 151 passes the laser light 901 and the fluorescent lights 903 and 904 through the light path finishing module 151, and the first optical axis of the fluorescent light 903, the second optical axis of the fluorescent light 904, and the third optical axis of the laser light 901 The directions are the same, and the laser light 901 and the fluorescent lights 903 and 904 enter the opening 152o. Then, after the integrating column 152 uniformly mixes the laser light 901 and the fluorescent lights 903 and 904 entering the opening 152o, the integrating column 152 emits a combined light 905.

具體而言，光路整理模組151具有反射面151r。反射面151r反射雷射光901與螢光904。雷射光901與螢光904入射反射面151r的角度為約45度。Specifically, the light path arrangement module 151 has a reflecting surface 151r. The reflecting surface 151r reflects laser light 901 and fluorescent light 904. The angle at which the laser light 901 and the fluorescent light 904 enter the reflecting surface 151r is about 45 degrees.

在其他實施方式中，光路整理模組151可以有其他的態樣。舉例來說，第19圖繪示光路整理模組151的另一種態樣。又例如，光路整理模組151與積分柱152可以為一體，主要是先使入光面進行各路光線方向上的整合，使整合為與第三光軸的方向相同，而後再讓各路光線均勻混合。再例如，在其他可能實施的態樣上，光路整理模組151亦可以為光纖模組。In other embodiments, the light path arrangement module 151 may have other aspects. For example, FIG. 19 illustrates another aspect of the light path finishing module 151. For another example, the light path finishing module 151 and the integrating column 152 may be integrated. The light incident surface is first integrated in the direction of each light path, so that the integration is the same as the direction of the third optical axis, and then the light in each path is integrated. Mix well. For another example, in other possible implementation modes, the optical path finishing module 151 may also be an optical fiber module.

在一些實施方式中，可以使用會聚透鏡取代積分柱152。另外，合光模組150可以為光纖模組。In some embodiments, a converging lens may be used instead of the integrating column 152. In addition, the light combining module 150 may be an optical fiber module.

第20圖至第23圖分別繪示依照本發明不同實施方式之雷射投影光源100與其光路的示意圖，雷射投影光源100中的元件細節如前所述，在此不再贅述。如第20圖所繪示，雷射投影光源100更包含另一雷射光源模組112。雷射光源模組112發射藍色雷射光902，其中雷射光902進入合光模組150。另外，雷射光901通過螢光輪130時被螢光輪130的螢光層吸收，因此雷射光901沒有通過收光模組140，且雷射光901沒有進入合光模組150，但並不限於此。在其他實施方式中，雷射光901可以通過螢光輪130，於是雷射光901自第二側130b離開並進入收光模組140，收光模組140改變雷射光901的第三光軸的方向，且使雷射光901在離開收光模組140後進入合光模組150。20 to 23 respectively illustrate schematic diagrams of the laser projection light source 100 and its optical path according to different embodiments of the present invention. The details of the components in the laser projection light source 100 are as described above, and are not repeated here. As shown in FIG. 20, the laser projection light source 100 further includes another laser light source module 112. The laser light source module 112 emits blue laser light 902, and the laser light 902 enters the light combining module 150. In addition, the laser light 901 is absorbed by the fluorescent layer of the fluorescent wheel 130 when passing through the fluorescent wheel 130. Therefore, the laser light 901 does not pass through the light receiving module 140 and the laser light 901 does not enter the light combining module 150, but it is not limited thereto. In other embodiments, the laser light 901 can pass through the fluorescent wheel 130, so the laser light 901 leaves from the second side 130b and enters the light receiving module 140. The light receiving module 140 changes the direction of the third optical axis of the laser light 901. The laser light 901 enters the light combining module 150 after leaving the light receiving module 140.

原則上，雷射光源模組112之雷射光902是作為補充特定波長範圍之光線使用，目的是使雷射投影光源100具有更完整的色彩表現。舉例而言，當雷射光901及螢光903、904中缺乏藍光元素時，則雷射光902為藍光，若缺乏紅光元素時，則雷射光902為紅光。在作為補光目的上以補藍光為例，雷射光902也可以由收光模組120進入補光，例如由分色鏡121進入補光。應了解到，以上所舉之雷射光902的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇雷射光902的具體實施方式。In principle, the laser light 902 of the laser light source module 112 is used as a light supplementing a specific wavelength range, so that the laser projection light source 100 has a more complete color performance. For example, when the blue light element is absent from the laser light 901 and the fluorescent lights 903 and 904, the laser light 902 is blue light, and when the red light element is lacking, the laser light 902 is red light. For the purpose of supplementary light, the supplementary blue light is taken as an example. The laser light 902 can also enter the supplementary light through the light receiving module 120, for example, the dichroic mirror 121 can enter the supplementary light. It should be understood that the specific implementations of the laser light 902 mentioned above are merely examples and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs should flexibly select the specific implementation of the laser light 902 according to actual needs. the way.

又或者，如第21圖所繪示，雷射光源模組111發射雷射光901。雷射光901通過收光模組120。螢光輪130具有第一側130a與第二側130b。螢光輪130接收雷射光901，且轉換雷射光901為螢光903與螢光904並分別從第一側130a與第二側130b發射。螢光903具有第一光軸，螢光903可在收光模組120中被會聚模組122會聚，以及被轉折，如被分色鏡121、反射鏡124、126轉折三次，使螢光903在通過收光模組120後，收光模組120改變第一光軸的方向。收光模組140具有會聚模組143以接收並會聚螢光904。合光模組150接收通過收光模組120的螢光903與通過收光模組140的螢光904且進行合光而形成合光905，其中螢光903、904在進入合光模組150時，第一光軸與第二光軸的角度差約90度。Alternatively, as shown in FIG. 21, the laser light source module 111 emits laser light 901. The laser light 901 passes through the light receiving module 120. The fluorescent wheel 130 has a first side 130a and a second side 130b. The fluorescent wheel 130 receives the laser light 901, and converts the laser light 901 into fluorescent light 903 and fluorescent light 904 and emits them from the first side 130a and the second side 130b, respectively. The fluorescent light 903 has a first optical axis. The fluorescent light 903 can be converged by the convergence module 122 in the light-receiving module 120 and turned. After passing through the light receiving module 120, the light receiving module 120 changes the direction of the first optical axis. The light receiving module 140 has a convergence module 143 to receive and condense the fluorescent light 904. The light combining module 150 receives the fluorescent light 903 passing through the light receiving module 120 and the fluorescent light 904 passing through the light receiving module 140 and combines them to form a combined light 905. The fluorescent lights 903 and 904 enter the light combining module 150. At this time, the angle between the first optical axis and the second optical axis is about 90 degrees.

在其他實施例中，如第22圖所繪示，雷射光源模組111發射雷射光901。雷射光901通過收光模組120。螢光輪130具有第一側130a與第二側130b。螢光輪130接收雷射光901，且轉換雷射光901為螢光903與螢光904並分別從第一側130a與第二側130b發射。螢光903具有第一光軸，螢光903可在收光模組120中被會聚模組122會聚，以及被轉折，如被分色鏡121、反射鏡124轉折兩次，使螢光903在通過收光模組120後，收光模組120改變第一光軸的方向。收光模組140具有會聚模組143以接收並會聚螢光904。合光模組150接收通過收光模組120的螢光903與通過收光模組140的螢光904且進行合光而形成合光905，其中螢光903、904在進入合光模組150時，第一光軸與第二光軸大致上平行。In other embodiments, as shown in FIG. 22, the laser light source module 111 emits laser light 901. The laser light 901 passes through the light receiving module 120. The fluorescent wheel 130 has a first side 130a and a second side 130b. The fluorescent wheel 130 receives the laser light 901, and converts the laser light 901 into fluorescent light 903 and fluorescent light 904 and emits them from the first side 130a and the second side 130b, respectively. Fluorescent light 903 has a first optical axis. Fluorescent light 903 can be converged and turned by convergence module 122 in light receiving module 120. For example, it is turned twice by dichroic mirror 121 and reflecting mirror 124, so that After passing through the light receiving module 120, the light receiving module 120 changes the direction of the first optical axis. The light receiving module 140 has a convergence module 143 to receive and condense the fluorescent light 904. The light combining module 150 receives the fluorescent light 903 passing through the light receiving module 120 and the fluorescent light 904 passing through the light receiving module 140 and combines them to form a combined light 905. The fluorescent lights 903 and 904 enter the light combining module 150. At this time, the first optical axis is substantially parallel to the second optical axis.

在其他的實施例中，如第23圖所繪示，雷射光源模組111發射雷射光901。雷射光901通過收光模組120。螢光輪130具有第一側130a與第二側130b。螢光輪130接收雷射光901，且轉換雷射光901為螢光903與螢光904並分別從第一側130a與第二側130b發射。螢光903具有第一光軸，螢光903可在收光模組120中被會聚模組122會聚，以及被轉折，如被分色鏡121與反射鏡124轉折兩次，使螢光903在通過收光模組120後，收光模組120改變第一光軸的方向。螢光904具有第二光軸，螢光904可在收光模組140中被會聚模組143會聚，以及被轉折，如被反射鏡142、144轉折兩次，使螢光904在通過收光模組140後，收光模組140改變第二光軸的方向。合光模組150接收通過收光模組120的螢光903與通過收光模組140的螢光904且進行合光而形成合光905，其中螢光903、904在進入合光模組150時，第一光軸與第二光軸的角度差約180度。In other embodiments, as shown in FIG. 23, the laser light source module 111 emits laser light 901. The laser light 901 passes through the light receiving module 120. The fluorescent wheel 130 has a first side 130a and a second side 130b. The fluorescent wheel 130 receives the laser light 901, and converts the laser light 901 into fluorescent light 903 and fluorescent light 904 and emits them from the first side 130a and the second side 130b, respectively. The fluorescent light 903 has a first optical axis. The fluorescent light 903 can be converged by the convergence module 122 in the light-receiving module 120 and turned. After passing through the light receiving module 120, the light receiving module 120 changes the direction of the first optical axis. The fluorescent light 904 has a second optical axis. The fluorescent light 904 can be converged and turned by the convergence module 143 in the light receiving module 140. For example, the fluorescent light 904 is turned twice by the reflecting mirrors 142 and 144, so that the fluorescent light 904 passes through and receives light After the module 140, the light receiving module 140 changes the direction of the second optical axis. The light combining module 150 receives the fluorescent light 903 passing through the light receiving module 120 and the fluorescent light 904 passing through the light receiving module 140 and combines them to form a combined light 905. The fluorescent lights 903 and 904 enter the light combining module 150. At this time, the angle difference between the first optical axis and the second optical axis is about 180 degrees.

第24圖與第25圖繪示依照本發明不同實施方式之雷射投影裝置200與其光路的示意圖。如第24圖與第25圖所繪示，雷射投影裝置200包含雷射投影光源100、波長選擇器210、至少一影像模組以及投影模組230。波長選擇器210接收合光905，並發射第一色光911、第二色光912以及第三色光913。影像模組接收第一色光911、第二色光912以及第三色光913，並產生至少一影像光。投影模組230接收影像光，並產生至少一投影光。24 and 25 are schematic diagrams of a laser projection apparatus 200 and an optical path thereof according to different embodiments of the present invention. As shown in FIGS. 24 and 25, the laser projection device 200 includes a laser projection light source 100, a wavelength selector 210, at least one image module, and a projection module 230. The wavelength selector 210 receives the combined light 905 and emits a first color light 911, a second color light 912, and a third color light 913. The image module receives the first color light 911, the second color light 912, and the third color light 913, and generates at least one image light. The projection module 230 receives image light and generates at least one projection light.

如第1圖與第24圖所繪示，第24圖中的雷射投影光源100可以為前述的任何一個雷射投影光源100。雷射投影裝置200包含影像模組220，且影像模組220的數量為一個，波長選擇器210依不同時序發射第一色光911、第二色光912以及第三色光913，影像模組220依不同時序接收第一色光911、第二色光912以及第三色光913。在影像模組220接收第一色光911後，影像模組220產生影像光921。在影像模組220接收第二色光912後，影像模組220產生影像光922。在影像模組220接收第三色光913後，影像模組220產生影像光923。換句話說，影像模組220依不同時序產生影像光921、922、923。投影模組230依不同時序接收影像光921、922、923。在投影模組230接收影像光921後，投影模組230產生投影光931。在投影模組230接收影像光922後，投影模組230產生投影光932。在投影模組230接收影像光923後，投影模組230產生投影光933。換句話說，投影模組230依不同時序產生投影光931、932、933。As shown in FIG. 1 and FIG. 24, the laser projection light source 100 in FIG. 24 may be any one of the foregoing laser projection light sources 100. The laser projection device 200 includes an image module 220, and the number of the image modules 220 is one. The wavelength selector 210 emits the first color light 911, the second color light 912, and the third color light 913 at different timings. The image module 220 depends on The first color light 911, the second color light 912, and the third color light 913 are received at different timings. After the image module 220 receives the first color light 911, the image module 220 generates image light 921. After the image module 220 receives the second color light 912, the image module 220 generates image light 922. After the image module 220 receives the third color light 913, the image module 220 generates image light 923. In other words, the image module 220 generates image light 921, 922, 923 at different timings. The projection module 230 receives image light 921, 922, 923 at different timings. After the projection module 230 receives the image light 921, the projection module 230 generates the projection light 931. After the projection module 230 receives the image light 922, the projection module 230 generates the projection light 932. After the projection module 230 receives the image light 923, the projection module 230 generates the projection light 933. In other words, the projection module 230 generates projection light 931, 932, 933 at different timings.

具體而言，波長選擇器210可為具有濾光片的色輪。色輪的旋轉方式將會對應於螢光輪130的旋轉方式。舉例來說，在一些實施方式中，當螢光輪130進行旋轉而使螢光輪130發射螢光903、904，且假設雷射光901會被螢光輪130的螢光層完全轉化，色輪將旋轉至所對應的濾光片而使其選擇並過濾出螢光903、904的頻譜中所具有的特定頻譜範圍(例如紅光或綠光)。當螢光輪130進行旋轉而使雷射光901通過螢光輪130的時候(此時螢光輪130沒有發射螢光904)，色輪將會旋轉至所對應的濾光片或擴散片而使其選擇並發射雷射光901的頻譜中所具有的特定頻譜範圍(例如藍光)。Specifically, the wavelength selector 210 may be a color wheel having a filter. The rotation of the color wheel will correspond to the rotation of the fluorescent wheel 130. For example, in some embodiments, when the fluorescent wheel 130 is rotated to cause the fluorescent wheel 130 to emit fluorescent light 903, 904, and assuming that the laser light 901 is completely converted by the fluorescent layer of the fluorescent wheel 130, the color wheel will rotate to The corresponding filter causes it to select and filter out a specific spectral range (for example, red light or green light) in the spectrum of the fluorescent light 903, 904. When the fluorescent wheel 130 rotates and the laser light 901 passes through the fluorescent wheel 130 (at this time, the fluorescent wheel 130 does not emit fluorescent light 904), the color wheel will rotate to the corresponding filter or diffuser to make it select and A specific spectral range (for example, blue light) included in the frequency spectrum of the emitted laser light 901 is emitted.

具體而言，影像模組220可為液晶面板或數位微反射晶片(Digital Micro-mirror Device，DMD)。應了解到，以上所舉之影像模組220的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇影像模組220的具體實施方式。Specifically, the image module 220 may be a liquid crystal panel or a digital micro-mirror device (DMD). It should be understood that the specific implementations of the image module 220 mentioned above are merely examples and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains should flexibly select the image module 220 according to actual needs. detailed description.

具體而言，投影模組230可包含複數個透鏡，舉例來說，會聚透鏡或發散透鏡。應了解到，以上所舉之投影模組230的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇投影模組230的具體實施方式。Specifically, the projection module 230 may include a plurality of lenses, for example, a condensing lens or a diverging lens. It should be understood that the specific implementations of the projection module 230 mentioned above are merely examples and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains should flexibly select the projection module 230 according to actual needs. detailed description.

具體而言，因應色輪旋轉而產生的第一色光911、第二色光912以及第三色光913可以分別為紅光、綠光或藍光，各色光依時序以分時的方式經由影像模組220而形成影像光921、922、923則分別為紅色影像光、綠色影像光或藍色影像光。投影光931、932、933可以分別為紅色投影光、綠色投影光或藍色投影光。應了解到，以上所舉之第一色光911、第二色光912與第三色光913、影像光921、922、923以及投影光931、932、933的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇第一色光911、第二色光912與第三色光913、影像光921、922、923以及投影光931、932、933的具體實施方式。Specifically, the first color light 911, the second color light 912, and the third color light 913 generated according to the rotation of the color wheel may be red light, green light, or blue light, respectively, and each color light passes through the image module in a time-sharing manner according to a time sequence. 220 to form image light 921, 922, and 923 are red image light, green image light, or blue image light, respectively. The projection lights 931, 932, and 933 may be red projection light, green projection light, or blue projection light, respectively. It should be understood that the above specific implementations of the first color light 911, the second color light 912 and the third color light 913, the image light 921, 922, 923, and the projection light 931, 932, 933 are merely examples, and are not intended to Limiting the present invention, those with ordinary knowledge in the technical field to which the present invention belongs should flexibly select the first color light 911, the second color light 912 and the third color light 913, the image light 921, 922, 923, and the projection light 931, Specific implementations of 932 and 933.

如第20圖與第25圖所繪示，第25圖的雷射投影裝置200大致與第24圖的雷射投影裝置200相同，以下主要將介紹其相異處。As shown in FIG. 20 and FIG. 25, the laser projection apparatus 200 of FIG. 25 is substantially the same as the laser projection apparatus 200 of FIG. 24, and the differences are mainly introduced below.

第25圖中的雷射投影光源100可以為前述的任何一個雷射投影光源100。雷射投影裝置200包含影像模組221、222、223。影像模組221接收第一色光911且產生影像光921。影像模組222接收第二色光912且產生影像光922。影像模組223接收第三色光913且產生影像光923。影像光921、922、923合光後成為影像光924。投影模組230接收影像光924，並產生投影光934。The laser projection light source 100 in FIG. 25 may be any one of the foregoing laser projection light sources 100. The laser projection apparatus 200 includes image modules 221, 222, and 223. The image module 221 receives the first color light 911 and generates an image light 921. The image module 222 receives the second color light 912 and generates an image light 922. The image module 223 receives the third color light 913 and generates an image light 923. The image lights 921, 922, and 923 are combined into image light 924. The projection module 230 receives image light 924 and generates projection light 934.

具體而言，波長選擇器210可包含複數個分色鏡或者包含複數個稜鏡。更具體地說，合光905的頻譜實質上為白光，包含第一色光911的頻譜、第二色光912的頻譜與第三色光913的頻譜，且波長選擇器210在接收合光905後，同時分離出第一色光911、第二色光912以及第三色光913。Specifically, the wavelength selector 210 may include a plurality of dichroic mirrors or a plurality of chirps. More specifically, the spectrum of the combined light 905 is substantially white light, including the spectrum of the first color light 911, the spectrum of the second color light 912, and the spectrum of the third color light 913. After the wavelength selector 210 receives the combined light 905, At the same time, the first color light 911, the second color light 912, and the third color light 913 are separated.

具體而言，影像模組221、222、223可為液晶面板或數位微反射晶片(Digital Micro-mirror Device，DMD)。應了解到，以上所舉之影像模組221、222、223的具體實施方式僅為例示，並非用以限制本發明，本發明所屬技術領域中具有通常知識者，應視實際需要，彈性選擇影像模組221、222、223的具體實施方式。Specifically, the image modules 221, 222, and 223 may be a liquid crystal panel or a digital micro-mirror device (DMD). It should be understood that the specific implementations of the image modules 221, 222, and 223 mentioned above are merely examples, and are not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention belongs should flexibly select images according to actual needs. Specific embodiments of the modules 221, 222, and 223.

具體而言，雷射投影光源100可以藉由複數個反射鏡調整影像光921、922、923的光軸的方向，因而使影像光921、922、923合光後成為影像光924。Specifically, the laser projection light source 100 can adjust the directions of the optical axes of the image lights 921, 922, and 923 through a plurality of reflectors, and thus the image lights 921, 922, and 923 are combined to become the image light 924.

本發明上述實施方式藉由雷射投影光源的螢光輪省略反射層的設計，因而使螢光自螢光輪的兩相對側射出。於是，因為沒有設置反射層，反射層吸收部份螢光的情況將不會發生，合光模組將能接收更多的螢光，因而可以大幅提升雷射投影光源所發射的合光的亮度。In the foregoing embodiment of the present invention, the design of the reflective layer is omitted by the fluorescent wheel of the laser projection light source, so that the fluorescent light is emitted from two opposite sides of the fluorescent wheel. Therefore, because there is no reflective layer, the situation where the reflective layer absorbs some fluorescent light will not occur, and the light combining module will be able to receive more fluorescent light, so the brightness of the combined light emitted by the laser projection light source can be greatly improved. .

進一步來說，在螢光粉以自身為起點向四周發射螢光後，螢光可能會被其他的螢光粉吸收，而發生螢光自吸收發光的情況，因而使螢光輪的出光率下降。因為雷射投影光源的螢光輪省略反射層的設計，因此螢光到達螢光輪的第一側或第二側後，螢光將會直接離開螢光層。於是，螢光在螢光層中的平均路徑長度將會較短，螢光層較不易發生螢光自吸收發光，因此將能有效提升螢光層的發光效率。Further, after the fluorescent powder emits fluorescent light from its own starting point to the surroundings, the fluorescent light may be absorbed by other fluorescent powders, and the self-absorption of fluorescent light may occur, thereby reducing the luminous efficiency of the fluorescent wheel. Because the fluorescent wheel of the laser projection light source omits the design of the reflective layer, after the fluorescent light reaches the first side or the second side of the fluorescent wheel, the fluorescent light will leave the fluorescent layer directly. Therefore, the average path length of the fluorescent light in the fluorescent layer will be shorter, and the fluorescent layer is less prone to self-absorption and emission of the fluorescent light, so the luminous efficiency of the fluorescent layer can be effectively improved.

藉由前述兩種機制，雷射投影光源所發射的合光的亮度將能大幅提升。在一些實施方式中，相較於傳統雷射投影光源，雷射投影光源所發射的合光的亮度將能提升約20%至30%。By the aforementioned two mechanisms, the brightness of the combined light emitted by the laser projection light source can be greatly improved. In some embodiments, compared to a conventional laser projection light source, the brightness of the combined light emitted by the laser projection light source can be increased by about 20% to 30%.

雖然本發明已以實施方式揭露如上，然其並非用以限定本發明，任何熟習此技藝者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. Therefore, the protection of the present invention The scope shall be determined by the scope of the attached patent application.

100‧‧‧雷射投影光源100‧‧‧laser projection light source

111、112‧‧‧雷射光源模組111, 112‧‧‧laser light source module

120、140‧‧‧收光模組120, 140‧‧‧ light receiving module

121‧‧‧分色鏡121‧‧‧dichroic mirror

122、143‧‧‧會聚模組122, 143‧‧‧ Convergence Module

124、126‧‧‧反射鏡124, 126‧‧‧ mirror

130、810‧‧‧螢光輪130, 810‧‧‧Fluorescent Wheel

130a‧‧‧第一側130a‧‧‧first side

130b‧‧‧第二側130b‧‧‧Second side

131、131b、131c‧‧‧螢光層131, 131b, 131c‧‧‧Fluorescent layer

131a‧‧‧螢光粉131a‧‧‧ fluorescent powder

132、132a、132b‧‧‧透明基板132, 132a, 132b ‧‧‧ transparent substrate

133、133a、133b、133c、133d‧‧‧抗反射膜133, 133a, 133b, 133c, 133d

134‧‧‧馬達134‧‧‧Motor

135‧‧‧上套環135‧‧‧up ring

136‧‧‧剛性板材136‧‧‧rigid sheet

138a、138b‧‧‧點138a, 138b ‧‧‧ points

139a、139b、139c、139d‧‧‧部分139a, 139b, 139c, 139d

141、142、144‧‧‧反射鏡141, 142, 144‧‧‧ mirror

150‧‧‧合光模組150‧‧‧combination module

151‧‧‧光路整理模組151‧‧‧Light path finishing module

151r‧‧‧反射面151r‧‧‧Reflective surface

152‧‧‧積分柱152‧‧‧Integral Column

152o‧‧‧開口152o‧‧‧open

200‧‧‧雷射投影裝置200‧‧‧laser projection device

210‧‧‧波長選擇器210‧‧‧wavelength selector

220、221、222、223‧‧‧影像模組220, 221, 222, 223‧‧‧Image Module

230‧‧‧投影模組230‧‧‧ projection module

810‧‧‧螢光輪810‧‧‧Fluorescent Wheel

811‧‧‧螢光層811‧‧‧Fluorescent layer

811a‧‧‧螢光粉811a‧‧‧Fluorescent powder

812‧‧‧反射層812‧‧‧Reflective layer

901、902‧‧‧雷射光901, 902‧‧‧ laser light

903、904、991、992‧‧‧螢光903, 904, 991, 992‧‧‧ fluorescent

905‧‧‧合光905‧‧‧Heguang

911‧‧‧第一色光911‧‧‧first light

912‧‧‧第二色光912‧‧‧Second Color Light

913‧‧‧第三色光913‧‧‧Third Color Light

921、922、923、924‧‧‧影像光921, 922, 923, 924‧‧‧‧light

931、932、933、934‧‧‧投影光931, 932, 933, 934‧‧‧ projected light

第1圖繪示依照本發明一實施方式之雷射投影光源與其光路的示意圖。 第2圖繪示依照本發明一實施方式之螢光輪的部分側視示意圖。 第3圖繪示依照傳統雷射投影光源的螢光輪的部分側視示意圖。 第4圖至第9圖繪示依照本發明不同實施方式之螢光輪的部分側視示意圖。 第10圖至第15圖繪示依照本發明不同實施方式之螢光輪的前視示意圖。 第16圖與第17圖繪示依照本發明不同實施方式之螢光輪的前視示意圖。 第18圖與第19圖繪示依照本發明不同實施方式之合光模組的示意圖。 第20圖至第23圖分別繪示依照本發明不同實施方式之雷射投影光源與其光路的示意圖。 第24圖與第25圖繪示依照本發明不同實施方式之雷射投影裝置與其光路的示意圖。FIG. 1 is a schematic diagram of a laser projection light source and its optical path according to an embodiment of the present invention. FIG. 2 is a schematic partial side view of a fluorescent wheel according to an embodiment of the present invention. FIG. 3 is a schematic side view of a part of a fluorescent wheel according to a conventional laser projection light source. FIG. 4 to FIG. 9 are partial schematic side views of a fluorescent wheel according to different embodiments of the present invention. 10 to 15 are schematic front views of fluorescent wheels according to different embodiments of the present invention. 16 and 17 show schematic front views of fluorescent wheels according to different embodiments of the present invention. 18 and 19 are schematic diagrams of a light combining module according to different embodiments of the present invention. 20 to 23 are schematic diagrams of a laser projection light source and an optical path thereof according to different embodiments of the present invention, respectively. 24 and 25 are schematic diagrams of a laser projection device and an optical path thereof according to different embodiments of the present invention.

Claims (20)

一種雷射投影光源，包含： 至少一第一雷射光源模組，用以發射一第一雷射光； 一第一收光模組，其中該第一雷射光通過該第一收光模組； 一螢光輪，具有一第一側與一第二側，用以接收該第一雷射光，且轉換該第一雷射光為該第一螢光與該第二螢光，其中該第一側接收通過該第一收光模組的該第一雷射光且發射該第一螢光，該第二側發射該第二螢光； 一第二收光模組，用以接收該第二螢光，其中該第一螢光通過該第一收光模組與該第二螢光通過該第二收光模組後，該第一螢光與該第二螢光中的至少一個的光軸會被轉折，而該第一螢光與該第二螢光的光軸的轉折次數和為至少兩次；以及 一合光模組，用以接收通過該第一收光模組的該第一螢光與通過該第二收光模組的該第二螢光且進行合光而形成一合光。A laser projection light source includes: at least one first laser light source module for emitting a first laser light; a first light receiving module, wherein the first laser light passes through the first light receiving module; A fluorescent wheel having a first side and a second side for receiving the first laser light, and converting the first laser light into the first fluorescent light and the second fluorescent light, wherein the first side receives Passing the first laser light of the first light receiving module and emitting the first fluorescent light, and the second side emitting the second fluorescent light; a second light receiving module for receiving the second fluorescent light, After the first fluorescent light passes through the first light receiving module and the second fluorescent light passes through the second light receiving module, the optical axis of at least one of the first fluorescent light and the second fluorescent light is changed. A turn, and the sum of the number of turns of the optical axis of the first fluorescent light and the second fluorescent light is at least twice; and a light combining module for receiving the first fluorescent light passing through the first light receiving module Combine light with the second fluorescent light passing through the second light receiving module to form a combined light. 如請求項1所述之雷射投影光源，其中該第一雷射光為藍光。The laser projection light source according to claim 1, wherein the first laser light is blue light. 如請求項1所述之雷射投影光源，其中該第一螢光與該第二螢光具有相同頻譜。The laser projection light source according to claim 1, wherein the first fluorescent light and the second fluorescent light have the same frequency spectrum. 如請求項1所述之雷射投影光源，其中該第一螢光與該第二螢光的亮度差異小於5%。The laser projection light source according to claim 1, wherein a brightness difference between the first fluorescent light and the second fluorescent light is less than 5%. 如請求項1所述之雷射投影光源，其中該第一螢光與該第二螢光為紅光、綠光、黃光或其組合。The laser projection light source according to claim 1, wherein the first fluorescent light and the second fluorescent light are red light, green light, yellow light, or a combination thereof. 如請求項1所述之雷射投影光源，其中該第一收光模組包含： 至少一分色鏡，用以使該雷射光通過該分色鏡與反射該第一螢光。The laser projection light source according to claim 1, wherein the first light receiving module includes: at least one dichroic mirror for passing the laser light through the dichroic mirror and reflecting the first fluorescent light. 如請求項1所述之雷射投影光源，其中該第一收光模組包含： 一會聚模組，用以會聚該第一螢光。The laser projection light source according to claim 1, wherein the first light receiving module includes: a convergence module for converging the first fluorescent light. 如請求項1所述之雷射投影光源，其中該第二收光模組包含： 至少一反射鏡，用以反射該第二螢光。The laser projection light source according to claim 1, wherein the second light receiving module includes: at least one reflector for reflecting the second fluorescent light. 如請求項1所述之雷射投影光源，其中該第二收光模組包含： 一會聚模組，用以會聚該第二螢光。The laser projection light source according to claim 1, wherein the second light receiving module includes: a convergence module for converging the second fluorescent light. 如請求項1所述之雷射投影光源，其中該合光模組包含： 一積分柱(Integration Rod)，具有一開口，用以發射該合光；以及 一光路整理模組；用以使該第一螢光與該第二螢光在通過該光路整理模組後，該第一螢光的光軸與該第二螢光的光軸的方向相同，且使該第一螢光與該第二螢光進入該開口。The laser projection light source according to claim 1, wherein the light combining module includes: an integration rod having an opening for emitting the light; and a light path sorting module; After the first fluorescent light and the second fluorescent light pass through the light path arrangement module, the optical axis of the first fluorescent light and the optical axis of the second fluorescent light are in the same direction, and the first fluorescent light and the first fluorescent light are aligned. Two fluorescent lights enter the opening. 如請求項1所述之雷射投影光源，更包含： 一第二雷射光源模組，用以發射一第二雷射光，其中該第二雷射光進入該合光模組。The laser projection light source according to claim 1, further comprising: a second laser light source module for emitting a second laser light, wherein the second laser light enters the light combining module. 如請求項1所述之雷射投影光源，其中第一雷射光通過該螢光輪，使該第一雷射光自該第二側離開並進入該第二收光模組，該第二收光模組用以改變該第一雷射光的光軸的方向，且使該第一雷射光在離開該第二收光模組後進入該合光模組。The laser projection light source according to claim 1, wherein the first laser light passes through the fluorescent wheel, so that the first laser light leaves from the second side and enters the second light receiving module, and the second light receiving mode The group is used to change the direction of the optical axis of the first laser light, and make the first laser light enter the light combining module after leaving the second light receiving module. 如請求項1所述之雷射投影光源，其中該螢光輪包含至少一第一螢光層，該第一螢光層用以轉換該第一雷射光為該第一螢光與該第二螢光。The laser projection light source according to claim 1, wherein the fluorescent wheel includes at least a first fluorescent layer, and the first fluorescent layer is used to convert the first laser light into the first fluorescent light and the second fluorescent light. Light. 如請求項13所述之雷射投影光源，其中該螢光輪更包含至少一透明基板，該第一螢光層設置於該透明基板上。The laser projection light source according to claim 13, wherein the fluorescent wheel further includes at least one transparent substrate, and the first fluorescent layer is disposed on the transparent substrate. 如請求項13所述之雷射投影光源，其中該螢光輪更具有至少一第一部分，該第一螢光層設置於該第一部分。The laser projection light source according to claim 13, wherein the fluorescent wheel further includes at least a first portion, and the first fluorescent layer is disposed on the first portion. 如請求項15所述之雷射投影光源，其中該螢光輪更具有至少一第二部分，其中該第二部分為透明，且該第一部分與該第二部分用以依不同時序接收該第一雷射光。The laser projection light source according to claim 15, wherein the fluorescent wheel further has at least a second part, wherein the second part is transparent, and the first part and the second part are used to receive the first at different timings. laser. 如請求項15所述之雷射投影光源，其中該螢光輪更具有一第三部分，該螢光輪更包含至少一第二螢光層，該第二螢光層設置於該第三部分，其中該第一部分與該第三部分用以依不同時序接收該第一雷射光，該第一螢光層與該第二螢光層用以依不同時序轉換該第一雷射光，使該第一螢光層與該第二螢光層所發射的光線合光成為該第一螢光與該第二螢光。The laser projection light source according to claim 15, wherein the fluorescent wheel further includes a third portion, and the fluorescent wheel further includes at least a second fluorescent layer, and the second fluorescent layer is disposed in the third portion, wherein The first part and the third part are used to receive the first laser light at different timings, and the first fluorescent layer and the second fluorescent layer are used to convert the first laser light at different timings to make the first fluorescent light The combined light emitted from the light layer and the second fluorescent layer becomes the first fluorescent light and the second fluorescent light. 一種雷射投影裝置，包含： 請求項1所述之雷射投影光源； 一波長選擇器，用以接收該合光，並發射一第一色光、一第二色光以及一第三色光； 至少一影像模組，用以接收該第一色光、該第二色光以及該第三色光，並產生至少一影像光；以及 一投影模組，用以接收該影像光，並產生至少一投影光。A laser projection device, comprising: the laser projection light source according to claim 1; a wavelength selector for receiving the combined light and emitting a first color light, a second color light, and a third color light; at least An image module for receiving the first color light, the second color light and the third color light and generating at least one image light; and a projection module for receiving the image light and generating at least one projection light . 如請求項18所述之雷射投影裝置，其中該些影像模組的數量為三個，該些影像模組分別接收該第一色光、該第二色光以及該第三色光且分別產生一第一色影像光、一第二色影像光以及一第三色影像光，該第一色影像光、該第二色影像光以及該第三色影像光合光後成為該影像光。The laser projection device according to claim 18, wherein the number of the image modules is three, and the image modules respectively receive the first color light, the second color light, and the third color light and generate one The first color image light, a second color image light, and a third color image light. The first color image light, the second color image light, and the third color image light are combined to become the image light. 如請求項18所述之雷射投影裝置，其中該影像模組的數量為一個，該波長選擇器依不同時序發射該第一色光、該第二色光以及該第三色光，該影像模組依不同時序接收該第一色光、該第二色光以及該第三色光，並依不同時序產生該些影像光，該投影模組依不同時序接收該些影像光，並依不同時序產生該些投影光。The laser projection device according to claim 18, wherein the number of the image modules is one, the wavelength selector emits the first color light, the second color light, and the third color light at different timings, and the image module The first color light, the second color light, and the third color light are received at different timings, and the image lights are generated at different timings. The projection module receives the image lights at different timings, and generates the images at different timings. Projection light.
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