TWI698698B

TWI698698B - Illumination system

Info

Publication number: TWI698698B
Application number: TW108118673A
Authority: TW
Inventors: 林宏英
Original assignee: 台達電子工業股份有限公司
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-07-11
Also published as: TW202043902A

Abstract

An illumination system includes a light source, a reflecting member, a lens set, and a phosphor wheel. The light source is configured to emit a first light. The reflecting member is configured to reflect at least a portion of the first lights. The lens set causes the first light reflected by the filtering portion to converge. The phosphor wheel and the reflecting member are located on two opposite sides of the lens set respectively. The phosphor wheel has a first section to which the first light converges. The first section provides a second light which passes through the lens set to form a light passage region. The reflecting member is at least partially located within the light passage region.

Description

光源系統Light source system

本揭示係關於一種光源系統。This disclosure relates to a light source system.

投影機的光源系統配備有螢光輪以提供不同顏色的光。常見的螢光輪具有供雷射光源所發出的藍光通過的缺口，然而，此類螢光輪在製作上較為複雜，且螢光輪的前後兩側均需設置光學元件，使得螢光輪沒有足夠的空間可以有效地散熱。再者，光源系統還需額外配備多個光學元件來重新導引通過螢光輪的藍光，除了造成光源系統製造成本高且體積龐大外，經過上述多個光學元件的光損失亦使藍光亮度降低。The light source system of the projector is equipped with a fluorescent wheel to provide different colors of light. A common fluorescent wheel has a gap for the blue light emitted by the laser light source to pass through. However, this type of fluorescent wheel is more complicated to manufacture, and the front and rear sides of the fluorescent wheel need to be equipped with optical elements, so that the fluorescent wheel does not have enough space for it. Effectively dissipate heat. Furthermore, the light source system needs to be additionally equipped with multiple optical elements to redirect the blue light passing through the fluorescent wheel. In addition to the high manufacturing cost and bulkiness of the light source system, the light loss through the multiple optical elements also reduces the brightness of the blue light.

本揭示之一目的在於提出一種創新的光源系統，解決上述問題。One purpose of this disclosure is to propose an innovative light source system to solve the above-mentioned problems.

依據本揭示的一些實施方式，一種光源系統包含第一光源、反射元件、透鏡組以及螢光輪。第一光源配置以發射第一色光，反射元件配置以反射至少部分第一色光。透鏡組配置以匯聚反射自反射元件的第一色光。螢光輪與反射元件分別位於透鏡組的相反兩側。螢光輪具有第一區段，第一色光係匯聚於第一區段，並由第一區段提供第二色光。第二色光通過透鏡組而形成一光通道區域，反射元件至少部分位於光通道區域內。According to some embodiments of the present disclosure, a light source system includes a first light source, a reflective element, a lens group, and a fluorescent wheel. The first light source is configured to emit the first color light, and the reflective element is configured to reflect at least part of the first color light. The lens group is configured to converge and reflect the first color light from the reflective element. The fluorescent wheel and the reflective element are respectively located on opposite sides of the lens group. The fluorescent wheel has a first section, and the first color light is concentrated in the first section, and the second color light is provided by the first section. The second color light passes through the lens group to form a light channel area, and the reflective element is at least partially located in the light channel area.

於本揭示的一或多個實施方式中，第一區段為反射區段，且第一色光自反射區段反射而形成第二色光。In one or more embodiments of the present disclosure, the first section is a reflective section, and the first colored light is reflected from the reflective section to form the second colored light.

於本揭示的一或多個實施方式中，螢光輪還具有第二區段，第二區段配置以吸收第一色光，並發射波長不同於第一色光的第三色光。第三色光通過透鏡組後進入光通道區域。In one or more embodiments of the present disclosure, the fluorescent wheel further has a second section configured to absorb the first color light and emit a third color light having a wavelength different from the first color light. The third color light enters the light channel area after passing through the lens group.

於本揭示的一或多個實施方式中，第一色光以及第二色光為藍光，第二區段包含以下至少其一：紅色螢光物質、綠色螢光物質以及黃色螢光物質。In one or more embodiments of the present disclosure, the first color light and the second color light are blue light, and the second section includes at least one of the following: a red fluorescent substance, a green fluorescent substance, and a yellow fluorescent substance.

於本揭示的一或多個實施方式中，反射區段包含以下至少其一：白膠、摻有螢光粉的白膠、螢光粉層、介電鍍膜、金屬反射層以及光學反射貼片。In one or more embodiments of the present disclosure, the reflective section includes at least one of the following: white glue, white glue doped with phosphor, phosphor layer, dielectric plating film, metal reflective layer, and optical reflective patch .

於本揭示的一或多個實施方式中，螢光輪包含反射式基板，反射區段位於反射式基板上。In one or more embodiments of the present disclosure, the fluorescent wheel includes a reflective substrate, and the reflective section is located on the reflective substrate.

於本揭示的一或多個實施方式中，第一區段為波長轉換區段，波長轉換區段配置以吸收第一色光，並發射波長不同於該第一色光的第二色光。In one or more embodiments of the present disclosure, the first section is a wavelength conversion section, and the wavelength conversion section is configured to absorb the first color light and emit a second color light having a wavelength different from the first color light.

於本揭示的一或多個實施方式中，第一色光為紫外光，波長轉換區段包含以下至少其一：紅色螢光物質、綠色螢光物質、藍色螢光物質以及黃色螢光物質。In one or more embodiments of the present disclosure, the first color light is ultraviolet light, and the wavelength conversion section includes at least one of the following: red fluorescent substance, green fluorescent substance, blue fluorescent substance, and yellow fluorescent substance .

於本揭示的一或多個實施方式中，反射元件為反射鏡。In one or more embodiments of the present disclosure, the reflective element is a mirror.

於本揭示的一或多個實施方式中，反射元件為分光鏡，分光鏡具有濾光部，濾光部配置以至少部分反射第一色光，並供其他色光通過。In one or more embodiments of the present disclosure, the reflective element is a beam splitter, and the beam splitter has a filter part configured to at least partially reflect the first color light and allow other colors to pass through.

於本揭示的一或多個實施方式中，濾光部的面積小於光通道區域的截面積的70%。In one or more embodiments of the present disclosure, the area of the filter portion is less than 70% of the cross-sectional area of the light channel region.

於本揭示的一或多個實施方式中，第一區段為反射區段，且第一色光自反射區段反射而形成第二色光。第一色光包含第一偏振光，第二色光包含第一偏振光以及偏振方向垂直於第一偏振光的第二偏振光，濾光部配置以反射第一偏振光，並供第二偏振光通過。In one or more embodiments of the present disclosure, the first section is a reflective section, and the first colored light is reflected from the reflective section to form the second colored light. The first color light includes the first polarized light, the second color light includes the first polarized light and the second polarized light whose polarization direction is perpendicular to the first polarized light. The filter part is configured to reflect the first polarized light and provide the second polarized light. by.

於本揭示的一或多個實施方式中，光源系統進一步包含二向色元件以及第二光源。二向色元件與透鏡組分別位於反射元件的相反兩側，第二光源配置以發射第四色光，第四色光自二向色元件遠離反射元件的表面反射，並與第二色光朝同一方向前進。In one or more embodiments of the present disclosure, the light source system further includes a dichroic element and a second light source. The dichroic element and the lens group are located on opposite sides of the reflective element. The second light source is configured to emit the fourth color light. The fourth color light is reflected from the surface of the dichroic element away from the reflective element and travels in the same direction as the second color light. .

綜上所述，在本揭示的光源系統反射式的設計下，所有光路均位在螢光輪的受光側，故可省去螢光輪後側的導引光學元件，使得光源系統的體積、重量與成本得到大幅的縮減，並提供螢光輪足夠的空間進行散熱。In summary, under the reflective design of the light source system of the present disclosure, all light paths are located on the light-receiving side of the fluorescent wheel, so the guiding optical element on the rear side of the fluorescent wheel can be omitted, so that the volume, weight and The cost is greatly reduced, and enough space for the fluorescent wheel is provided for heat dissipation.

為使本揭示之敘述更加詳盡與完備，可參照所附之圖式及以下所述各種實施方式。圖式中之各元件未按比例繪製，且僅為說明本揭示而提供。以下描述許多實務上之細節，以提供對本揭示的全面理解，然而，相關領域具普通技術者應當理解可在沒有一或多個實務上之細節的情況下實施本揭示，因此，該些細節不應用以限定本揭示。In order to make the description of this disclosure more detailed and complete, reference may be made to the attached drawings and various embodiments described below. The elements in the drawings are not drawn to scale, and are provided only to illustrate the present disclosure. Many practical details are described below to provide a comprehensive understanding of this disclosure. However, those of ordinary skill in the relevant fields should understand that this disclosure can be implemented without one or more practical details. Therefore, these details are not Application to limit this disclosure.

請參照第1圖，其為繪示依據本揭示一實施方式之光源系統100的側視圖。舉例而言，光源系統100可應用於投影機(圖未示)，以為投影機提供照明。光源系統100包含第一光源110、反射元件120、第一透鏡組131、螢光輪140、第二透鏡組132、色輪150以及光導管160。第一光源110配置以發射第一色光，第一色光沿著第一光路徑L1 (僅示意地繪出最外側的路徑)前進。反射元件120位在第一光路徑L1上，並配置以至少部分反射第一色光，第一色光被反射元件120反射後沿著第一光路徑L1朝向第一透鏡組131前進。Please refer to FIG. 1, which is a side view of a light source system 100 according to an embodiment of the present disclosure. For example, the light source system 100 can be applied to a projector (not shown) to provide illumination for the projector. The light source system 100 includes a first light source 110, a reflective element 120, a first lens group 131, a fluorescent wheel 140, a second lens group 132, a color wheel 150 and a light pipe 160. The first light source 110 is configured to emit a first color light, and the first color light travels along a first light path L1 (only the outermost path is schematically drawn). The reflective element 120 is located on the first light path L1 and is configured to at least partially reflect the first color light. The first color light is reflected by the reflective element 120 and then travels toward the first lens group 131 along the first light path L1.

如第1圖所示，第一透鏡組131接收反射自反射元件120的第一色光，並將其匯聚於螢光輪140上。於一些實施方式中，第一透鏡組131為準直透鏡。螢光輪140位在第一透鏡組131遠離反射元件120的一側，換言之，螢光輪140與反射元件120係位於第一透鏡組131的相反兩側。螢光輪140具有第一區段143 (如第2圖所示，將於下文中詳細介紹)，其配置以提供第二色光，第二色光沿著第二光路徑L2 (僅示意地繪出最外側的路徑)前進。As shown in FIG. 1, the first lens group 131 receives the first color light reflected from the reflective element 120 and focuses it on the fluorescent wheel 140. In some embodiments, the first lens group 131 is a collimating lens. The fluorescent wheel 140 is located on the side of the first lens group 131 away from the reflective element 120. In other words, the fluorescent wheel 140 and the reflective element 120 are located on opposite sides of the first lens group 131. The fluorescent wheel 140 has a first section 143 (as shown in Figure 2, which will be described in detail below), which is configured to provide a second color light, and the second color light is along the second light path L2. The outer path) advance.

如第1圖所示，第二色光通過第一透鏡組131後形成平行光束，所述平行光束界定出一光通道區域999，反射元件120係至少部分位於光通道區域999內。第二透鏡組132、色輪150以及光導管160依序排列在反射元件120遠離第一透鏡組131的一側上。第二透鏡組132配置以接收通過光通道區域999的第二色光，並將其匯聚於色輪150，第二色光經色輪150純化後進入色輪150後方的光導管160以提供照明。於一些實施方式中，光通道區域999的截面積實質上等同於第一透鏡組131中距離螢光輪140最遠(且直徑最大)的透鏡之截面積。As shown in FIG. 1, the second color light passes through the first lens group 131 to form a parallel beam. The parallel beam defines a light channel area 999, and the reflective element 120 is at least partially located in the light channel area 999. The second lens group 132, the color wheel 150 and the light pipe 160 are sequentially arranged on the side of the reflecting element 120 away from the first lens group 131. The second lens group 132 is configured to receive the second color light passing through the light channel area 999 and converge it on the color wheel 150. The second color light is purified by the color wheel 150 and enters the light pipe 160 behind the color wheel 150 to provide illumination. In some embodiments, the cross-sectional area of the light channel region 999 is substantially equal to the cross-sectional area of the lens in the first lens group 131 that is farthest from the fluorescent wheel 140 (and has the largest diameter).

本揭示之光源系統100是採用反射式的設計，使得第一色光行進的第一光路徑L1或是第二色光所行進的第二光路徑L2均位在螢光輪140的受光側(亦即，螢光輪140面向第一透鏡組131的一側)，故在螢光輪140後方不需要設置光學元件來導引第一色光，如此一來，螢光輪140有足夠的空間可以散熱。於一些實施方式中，光源系統100進一步包含散熱器101，其設置於螢光輪140遠離第一透鏡組131的一側。舉例而言，散熱器101可包含沿軸向排列的複數個散熱鰭片，其接觸螢光輪140，並藉由其較大的表面積來協助螢光輪140散熱。The light source system 100 of the present disclosure adopts a reflective design, so that the first light path L1 traveled by the first color light or the second light path L2 traveled by the second color light are both located on the light receiving side of the fluorescent wheel 140 (ie , The fluorescent wheel 140 faces the side of the first lens group 131), so there is no need to provide optical elements behind the fluorescent wheel 140 to guide the first color light. In this way, the fluorescent wheel 140 has enough space for heat dissipation. In some embodiments, the light source system 100 further includes a heat sink 101 disposed on the side of the fluorescent wheel 140 away from the first lens group 131. For example, the heat sink 101 may include a plurality of heat dissipation fins arranged along the axial direction, which contact the fluorescent wheel 140 and assist the fluorescent wheel 140 to dissipate heat due to its large surface area.

請參照第2圖，其為繪示第1圖所示之螢光輪140的俯視圖。於一些實施方式中，第一光源110為藍光雷射，故第一色光為藍光。螢光輪140為一採用反射式基板149 (請見第1圖)的螢光輪，螢光輪140的第一區段143為反射區段，其沿著螢光輪140的外緣設置，並且位於反射式基板149上。當第一色光匯聚於第一區段143上時會在第一區段143進行反射，換言之，第一色光自第一區段143反射而形成第二色光，故第二色光亦為藍光。Please refer to FIG. 2, which is a top view of the fluorescent wheel 140 shown in FIG. 1. In some embodiments, the first light source 110 is a blue laser, so the first color light is blue. The fluorescent wheel 140 is a fluorescent wheel using a reflective substrate 149 (see Figure 1). The first section 143 of the fluorescent wheel 140 is a reflective section, which is arranged along the outer edge of the fluorescent wheel 140 and is located in the reflective type. On the substrate 149. When the first color light is converged on the first section 143, it will be reflected in the first section 143. In other words, the first color light is reflected from the first section 143 to form the second color light, so the second color light is also blue light .

於一些實施方式中，第一色光照射在螢光輪140的第一區段143上時發生漫反射，故出射的第二色光所展開的角度大於入射的第一色光所展開的角度。於一些實施方式中，第一區段143包含白膠(主要為包含二氧化鈦之光反射性材料)、摻有螢光粉的白膠、螢光粉層，或是佈有光反射性質之材料，例如介電鍍膜、金屬反射層或是光學反射貼片等。In some embodiments, when the first color light is irradiated on the first section 143 of the fluorescent wheel 140, diffuse reflection occurs, so the angle of the outgoing second color light is greater than the angle of the incident first color light. In some embodiments, the first section 143 includes white glue (mainly a light reflective material containing titanium dioxide), white glue doped with phosphor, a phosphor layer, or a material with light reflective properties. For example, dielectric plating film, metal reflective layer or optical reflective patch.

為了使投影機能顯示不同的色彩，光源系統100還需要提供藍光外的其他色光。如第2圖所示，於一些實施方式中，螢光輪140還具有第二區段144，第二區段144同樣沿著螢光輪140的外緣設置。螢光輪140繞其轉軸145旋轉，故通過第一透鏡組131的第一色光輪流照射在第一區段143與第二區段144上。第二區段144為波長轉換區段，其配置以提供第三色光，具體而言，當第一色光匯聚於第二區段144上時，第二區段144吸收部分第一色光，並朝向第一透鏡組131發射波長大於第一色光的第三色光。第三色光沿著第二光路徑L2朝向第一透鏡組131前進，並在通過第一透鏡組131後進入光通道區域999。In order to enable the projector to display different colors, the light source system 100 also needs to provide colors other than blue light. As shown in FIG. 2, in some embodiments, the fluorescent wheel 140 further has a second section 144, and the second section 144 is also arranged along the outer edge of the fluorescent wheel 140. The fluorescent wheel 140 rotates around its rotating shaft 145, so the first color light passing through the first lens group 131 irradiates the first section 143 and the second section 144 in turn. The second section 144 is a wavelength conversion section configured to provide the third color light. Specifically, when the first color light is concentrated on the second section 144, the second section 144 absorbs part of the first color light, The third color light having a wavelength greater than the first color light is emitted toward the first lens group 131. The third color light travels toward the first lens group 131 along the second light path L2 and enters the light channel area 999 after passing through the first lens group 131.

於本實施方式中，第二區段144包含黃色螢光物質M1，其吸收部分第一色光並發出黃光(即第三色光)。一般而言，相較於綠光與紅光(或其疊加而成的黃光)，投影機所需的照明對於藍光的需求較低，因此，於一些實施方式中，第一區段143所涵蓋的區域面積小於第二區段144所涵蓋的區域面積。In this embodiment, the second segment 144 includes a yellow fluorescent material M1, which absorbs part of the first color light and emits yellow light (ie, the third color light). Generally speaking, compared to green light and red light (or yellow light formed by superimposing them), the illumination required by the projector has lower demand for blue light. Therefore, in some embodiments, the first section 143 The area of the covered area is smaller than the area of the area covered by the second section 144.

請參照第3圖，其為繪示依據本揭示另一實施方式之螢光輪240的俯視圖。本實施方式之螢光輪240可用以替代光源系統100的螢光輪140。螢光輪240與第2圖所示之實施方式的差異處在於螢光輪240的第二區段244具有第一子區段241以及第二子區段242。第一子區段241包含綠色螢光物質M2，當第一色光匯聚於第一子區段241上時，第一子區段241吸收部分第一色光並發出綠光。第二子區段242包含紅色螢光物質M3，當第一色光匯聚於第二子區段242上時，第二子區段242吸收部分第一色光並發出紅光。於一些實施方式中，第一子區段241所涵蓋的區域面積與第二子區段242所涵蓋的區域面積均大於第一區段143所涵蓋的區域面積。Please refer to FIG. 3, which is a top view of a fluorescent wheel 240 according to another embodiment of the present disclosure. The fluorescent wheel 240 of this embodiment can be used to replace the fluorescent wheel 140 of the light source system 100. The difference between the fluorescent wheel 240 and the embodiment shown in FIG. 2 is that the second section 244 of the fluorescent wheel 240 has a first subsection 241 and a second subsection 242. The first sub-section 241 includes a green fluorescent material M2. When the first color light is concentrated on the first sub-section 241, the first sub-section 241 absorbs part of the first color light and emits green light. The second sub-section 242 includes a red fluorescent material M3. When the first color light is concentrated on the second sub-section 242, the second sub-section 242 absorbs part of the first color light and emits red light. In some embodiments, the area covered by the first sub-section 241 and the area covered by the second sub-section 242 are both larger than the area covered by the first section 143.

請回頭參照第1圖。由於反射元件120部分位於光通道區域999內，取決於反射元件120的光學特性，部分第二色光及/或第三色光會被反射元件120反射而損失。於一些實施方式中，反射元件120為分光鏡，分光鏡具有濾光部121，其配置以反射至少部分第一色光(即藍光)，並供其他色光通過。因此，進入光通道區域999的第二色光(同為藍光)有一部分會被濾光部121反射而損失，其餘部分則由濾光部121周圍通過並前進至第二透鏡組132。第三色光(黃光，或紅光與綠光)對於濾光部121具有高穿透率，故絕大部分的第三色光通過反射元件120並前進至第二透鏡組132。於一些實施方式中，濾光部121的面積A1小於光通道區域999的截面積A2的70%，較佳地是小於光通道區域999的截面積A2的50%。Please refer back to Figure 1. Since the reflective element 120 is partially located in the light channel area 999, depending on the optical characteristics of the reflective element 120, part of the second color light and/or the third color light will be reflected by the reflective element 120 and lost. In some embodiments, the reflective element 120 is a beam splitter, and the beam splitter has a filter part 121 configured to reflect at least part of the first color light (ie, blue light) and allow other colors to pass through. Therefore, part of the second color light (the same blue light) entering the light channel area 999 will be reflected by the filter part 121 and lost, and the remaining part will pass around the filter part 121 and proceed to the second lens group 132. The third color light (yellow light, or red light and green light) has a high transmittance to the filter portion 121, so most of the third color light passes through the reflective element 120 and proceeds to the second lens group 132. In some embodiments, the area A1 of the filter part 121 is less than 70% of the cross-sectional area A2 of the light channel region 999, preferably less than 50% of the cross-sectional area A2 of the light channel region 999.

就第一色光而言，儘管在本揭示的光源系統100中有少部分被濾光部121所反射而損失，但相較於現有的光源系統則省去了位在螢光輪後側用以導引第一色光的額外光學元件，代表第一色光因為穿透螢光輪並經過多個光學元件的光損失也得以解決，故本揭示的光源系統100所提供的第一色光亮度足以匹配現有的光源系統相，還能大幅縮減光源系統的體積、重量與成本。As far as the first color light is concerned, although a small part of the light source system 100 of the present disclosure is reflected and lost by the filter part 121, compared with the existing light source system, it eliminates the need to be located behind the fluorescent wheel. The additional optical element that guides the first color light means that the light loss of the first color light passing through the fluorescent wheel and passing through multiple optical elements is also solved. Therefore, the light source system 100 of the present disclosure provides sufficient brightness of the first color light. Matching the existing light source system phase can also greatly reduce the volume, weight and cost of the light source system.

於一些實施方式中，第一色光於濾光部121的入射角大於45度。在上述入射角下，濾光部121的穿透率對波長曲線會因為光不同的偏振態而出現明顯區隔，可利用此特性來允許特定偏振態的藍光通過濾光部121，以減少藍光的損失。In some embodiments, the incident angle of the first color light on the filter portion 121 is greater than 45 degrees. At the above incident angle, the transmittance vs. wavelength curve of the filter portion 121 will be significantly separated due to the different polarization states of the light. This feature can be used to allow blue light with a specific polarization state to pass through the filter portion 121 to reduce blue light. Loss.

於一些實施方式中，發射自第一光源110的第一色光包含具有第一偏振方向的第一偏振光，換言之，第一光源110所提供的第一色光為偏振光。舉例而言，第一偏振光可為S偏振態藍光。第一偏振光經過螢光輪140的第一區段143反射後轉變為非偏振光，故第一區段143所提供的第二色光包含偏振方向互相垂直的第一偏振光以及第二偏振光。舉例而言，第二偏振光為P偏振態藍光。濾光部121配置以反射第一偏振光，並供第二偏振光通過，藉此進一步降低藍光的損失。In some embodiments, the first color light emitted from the first light source 110 includes the first polarized light having the first polarization direction. In other words, the first color light provided by the first light source 110 is polarized light. For example, the first polarized light may be S-polarized blue light. The first polarized light is reflected by the first section 143 of the fluorescent wheel 140 and then converted into unpolarized light. Therefore, the second color light provided by the first section 143 includes the first polarized light and the second polarized light whose polarization directions are perpendicular to each other. For example, the second polarized light is P-polarized blue light. The filter part 121 is configured to reflect the first polarized light and pass the second polarized light, thereby further reducing the loss of blue light.

請參照第4圖。第4圖為繪示第1圖所示之光源系統100的反射元件120的前視圖，其中見於第1圖的反射元件120的邊緣在第4圖的視角下為反射元件120的右側邊緣。第4圖所示之反射元件120為分光鏡之實施態樣，除了前文中介紹的濾光部121外，反射元件120還具有透光部122，其設置於濾光部121的至少一側。透光部122之設置係因為反射元件120需要有能被夾持固定的部分，為了避免阻擋螢光輪140所提供的第二色光以及第三色光，透光部122配置以供所有色光通過。於一些實施方式中，透光部122鄰近第一透鏡組131的表面上具有抗反射鍍膜123，以減少第二色光與第三色光的反射損失。Please refer to Figure 4. Fig. 4 is a front view of the reflective element 120 of the light source system 100 shown in Fig. 1, wherein the edge of the reflective element 120 seen in Fig. 1 is the right edge of the reflective element 120 in the viewing angle of Fig. 4. The reflective element 120 shown in FIG. 4 is an implementation of the spectroscope. In addition to the filter part 121 described above, the reflective element 120 also has a light transmitting part 122 which is disposed on at least one side of the filter part 121. The transparent portion 122 is arranged because the reflective element 120 needs to be clamped and fixed. In order to avoid blocking the second color light and the third color light provided by the fluorescent wheel 140, the transparent portion 122 is configured to allow all colors to pass. In some embodiments, the light-transmitting portion 122 has an anti-reflection coating 123 on the surface adjacent to the first lens group 131 to reduce the reflection loss of the second color light and the third color light.

在其他的實施態樣中，反射元件120也可以是反射鏡，其配置以反射所有色光。於此等實施態樣中，反射元件120同樣可以將第一色光導引至螢光輪140，此外，儘管部分朝向反射元件120前進的第二色光與第三色光會被反射而損失，但反射元件120僅部分遮擋到光通道區域999的截面，故其餘部分的第二色光與第三色光可由反射元件120周圍通過並前進至第二透鏡組132，如此同樣能達到本發明之功效。In other embodiments, the reflective element 120 may also be a mirror, which is configured to reflect all colored lights. In these embodiments, the reflective element 120 can also guide the first color light to the fluorescent wheel 140. In addition, although part of the second color light and the third color light that travel toward the reflective element 120 will be reflected and lost, the reflection The element 120 is only partially shielded to the cross section of the light channel area 999, so the remaining part of the second color light and the third color light can pass around the reflective element 120 and proceed to the second lens group 132, which can also achieve the effect of the present invention.

請回頭參照第1圖。於一些實施方式中，光源系統100進一步包含匯聚透鏡170、反射鏡180以及勻光元件190。匯聚透鏡170位於反射鏡180與第一光源110之間。匯聚透鏡170將發射自第一光源110的第一色光匯聚於反射鏡180上，勻光元件190位在第一色光所行進的第一光路徑L1上，並配置以接收經反射鏡180反射後的第一色光，第一色光在通過勻光元件190後均勻地照射在反射元件120上。於一些實施方式中，勻光元件190為擴散片(diffuser)。Please refer back to Figure 1. In some embodiments, the light source system 100 further includes a converging lens 170, a reflecting mirror 180, and a homogenizing element 190. The converging lens 170 is located between the reflecting mirror 180 and the first light source 110. The condensing lens 170 condenses the first color light emitted from the first light source 110 on the reflector 180. The homogenizing element 190 is located on the first light path L1 where the first color light travels, and is configured to receive the first light After the reflected first color light, the first color light passes through the light homogenizing element 190 and irradiates the reflective element 120 uniformly. In some embodiments, the light homogenizing element 190 is a diffuser.

於另一些實施方式中，第一光源110為紫外光雷射，故發射自第一光源110的第一色光為紫外光。於此等實施方式中，螢光輪140的第一區段143為波長轉換區段，其包含以下至少其一：紅色螢光物質、綠色螢光物質、藍色螢光物質以及黃色螢光物質。換言之，螢光輪140所包含的螢光物質會吸收紫外光而發射出紅光、綠光、藍光、黃光中至少其一。In other embodiments, the first light source 110 is an ultraviolet laser, so the first color light emitted from the first light source 110 is ultraviolet light. In these embodiments, the first section 143 of the fluorescent wheel 140 is a wavelength conversion section, which includes at least one of the following: a red fluorescent substance, a green fluorescent substance, a blue fluorescent substance, and a yellow fluorescent substance. In other words, the fluorescent substance contained in the fluorescent wheel 140 absorbs ultraviolet light and emits at least one of red light, green light, blue light, and yellow light.

另外，第二透鏡組132不限於第1圖所示的單透鏡配置，所屬技術領域中具有通常知識者得視實務上的需求來選擇適當的透鏡數目及其光學特性，以將通過光通道區域999的第二色光與第三色光匯聚於色輪150。同樣地，第一透鏡組131不限於第1圖所示的雙透鏡配置。In addition, the second lens group 132 is not limited to the single-lens configuration shown in Figure 1. Those skilled in the art have to choose the appropriate number of lenses and their optical characteristics according to practical requirements, so as to pass the light channel area. The second color light and the third color light of 999 converge on the color wheel 150. Likewise, the first lens group 131 is not limited to the two-lens configuration shown in FIG. 1.

請參照第5圖，其為繪示依據本揭示另一實施方式之光源系統500的側視圖。本實施方式與第1圖所示之光源系統100的一差異處，在於光源系統500進一步包含第二光源502、第三透鏡組503以及二向色元件504。二向色元件504與第一透鏡組131分別位於反射元件120的相反兩側，第二光源502面向二向色元件504遠離反射元件120的表面，第三透鏡組503位於二向色元件504的所述表面與第二光源502之間。Please refer to FIG. 5, which is a side view of a light source system 500 according to another embodiment of the present disclosure. The difference between this embodiment and the light source system 100 shown in FIG. 1 is that the light source system 500 further includes a second light source 502, a third lens group 503, and a dichroic element 504. The dichroic element 504 and the first lens group 131 are respectively located on opposite sides of the reflective element 120, the second light source 502 faces the dichroic element 504 away from the surface of the reflective element 120, and the third lens group 503 is located on the surface of the dichroic element 504 Between the surface and the second light source 502.

第二光源502係作為補充光源，其配置以發射第四色光，第四色光沿著第三光路徑L3朝向第三透鏡組503前進，並在通過第三透鏡組503後發散形成平行光束並前進至二向色元件504。第四色光自二向色元件504遠離反射元件120的表面反射後與第二色光朝同一方向前進，並通過第二透鏡組132而匯聚於色輪150。設置有第二光源502時，螢光輪540未必要提供所有三原色(紅綠藍)的色光。The second light source 502 is used as a supplementary light source and is configured to emit the fourth color light. The fourth color light travels along the third light path L3 toward the third lens group 503, and after passing through the third lens group 503, it diverges to form a parallel light beam and travels forward. To the dichroic element 504. The fourth color light is reflected from the surface of the dichroic element 504 away from the reflective element 120 and then travels in the same direction as the second color light, and is collected on the color wheel 150 through the second lens group 132. When the second light source 502 is provided, the fluorescent wheel 540 does not necessarily provide color lights of all three primary colors (red, green and blue).

於一些實施方式中，第二光源502為藍光雷射，二向色元件504配置以反射藍光並供其他色光通過。於此等實施方式中，光源系統500搭配第6圖所示之螢光輪540，以至少提供紅光、綠光或其組合。如第6圖所示，螢光輪540的第一區段543為波長轉換區段，其包含黃色螢光物質M1，第一光源110可為紫外光雷射，第一區段543的黃色螢光物質M1吸收部分紫外光並發射黃光。取而代之地，第一區段543亦可具有兩子區段，其各包含紅色螢光物質與綠色螢光物質，以分別提供紅光與綠光。In some embodiments, the second light source 502 is a blue laser, and the dichroic element 504 is configured to reflect blue light and allow light of other colors to pass. In these embodiments, the light source system 500 is matched with the fluorescent wheel 540 shown in FIG. 6 to provide at least red light, green light or a combination thereof. As shown in FIG. 6, the first section 543 of the fluorescent wheel 540 is a wavelength conversion section, which contains a yellow fluorescent material M1, the first light source 110 may be an ultraviolet laser, and the first section 543 contains yellow fluorescent light. The substance M1 absorbs part of the ultraviolet light and emits yellow light. Alternatively, the first section 543 may also have two sub-sections, each of which includes a red fluorescent substance and a green fluorescent substance to provide red light and green light respectively.

於前段所述之實施方式中，反射元件120可為反射鏡，其配置以反射發射至第一光源110的紫外光以及發射自螢光輪540的黃光(或綠光與紅光)。反射元件120可為二向色元件，其配置以反射發射至第一光源110的紫外光，並供其他色光通過。In the embodiment described in the preceding paragraph, the reflecting element 120 may be a reflecting mirror configured to reflect the ultraviolet light emitted to the first light source 110 and the yellow light (or green light and red light) emitted from the fluorescent wheel 540. The reflective element 120 may be a dichroic element configured to reflect the ultraviolet light emitted to the first light source 110 and allow other colored lights to pass through.

於另一些實施方式中，為了增加光源系統500提供的紅光亮度，第二光源502為紅光雷射，二向色元件504配置以反射紅光並供其他色光通過。於此等實施方式中，光源系統500改搭配第7圖所示之螢光輪540，以至少提供綠光、藍光或其組合。如第7圖所示，螢光輪540的第一區段543為波長轉換區段，其包含第一子區段541以及第二子區段542，第一子區段541以及第二子區段542分別包含綠色螢光物質M2與藍色螢光物質M4，第一光源110可為紫外光雷射，第一子區段541的綠色螢光物質M2吸收部分紫外光並發射綠光，第二子區段542的藍色螢光物質M4吸收部分紫外光並發射藍光。取而代之地，第一光源110亦可為藍光雷射，螢光輪540可包含反射區段以及綠色波長轉換區段，以分別提供藍光與綠光。In other embodiments, in order to increase the brightness of red light provided by the light source system 500, the second light source 502 is a red laser, and the dichroic element 504 is configured to reflect red light and allow other colors to pass through. In these embodiments, the light source system 500 is equipped with the fluorescent wheel 540 shown in FIG. 7 to provide at least green light, blue light or a combination thereof. As shown in Figure 7, the first section 543 of the fluorescent wheel 540 is a wavelength conversion section, which includes a first subsection 541 and a second subsection 542, a first subsection 541 and a second subsection 542 contains a green fluorescent material M2 and a blue fluorescent material M4 respectively. The first light source 110 can be an ultraviolet laser. The green fluorescent material M2 of the first sub-section 541 absorbs part of the ultraviolet light and emits green light. The blue phosphor M4 of the sub-section 542 absorbs part of the ultraviolet light and emits blue light. Alternatively, the first light source 110 may also be a blue laser, and the fluorescent wheel 540 may include a reflection section and a green wavelength conversion section to provide blue and green light respectively.

於前段所述之實施方式中，螢光輪540可進一步提供紅光，舉例而言，螢光輪540可進一步包含紅色波長轉換區段，其配置以發射第一紅光，第二光源502配置以發射波長不同於第一紅光的第二紅光。舉例而言，第一紅光與第二紅光的波長分別落在第一波長範圍與第二波長範圍內，較佳地第一波長範圍與第二波長範圍皆包含於紅光波長範圍內但彼此不重疊，然而大部分情況係使犧牲少許的第一波長部分範圍的光線而得以補充較多的第二波長範圍的光線，因此二向色元件504配置以反射波長落在第二波長範圍內的色光並供其他色光通過。然而，色光的補充亦不限於紅色，其但看系統之需求而定。In the embodiment described in the preceding paragraph, the fluorescent wheel 540 may further provide red light. For example, the fluorescent wheel 540 may further include a red wavelength conversion section configured to emit the first red light, and the second light source 502 is configured to emit A second red light having a wavelength different from the first red light. For example, the wavelengths of the first red light and the second red light fall within the first wavelength range and the second wavelength range, respectively. Preferably, the first wavelength range and the second wavelength range are both included in the red wavelength range but They do not overlap each other. However, in most cases, a small amount of light in the first wavelength range is sacrificed to supplement more light in the second wavelength range. Therefore, the dichroic element 504 is configured to reflect wavelengths within the second wavelength range. The colored light and other colored lights can pass through. However, the supplement of color light is not limited to red, but it depends on the needs of the system.

儘管本揭示已以實施方式揭露如上，然其並非用以限定本揭示，任何熟習此技藝者，於不脫離本揭示之精神及範圍內，當可作各種之更動與潤飾，因此本揭示之保護範圍當視後附之申請專利範圍所界定者為準。Although this disclosure has been disclosed in the above manner, it is not intended to limit the disclosure. Anyone who is familiar with this technique can make various changes and modifications without departing from the spirit and scope of the disclosure. Therefore, the protection of this disclosure The scope shall be subject to the definition of the attached patent scope.

100、500:光源系統 101:散熱器 110:光源 120:反射元件 121:濾光部 122:透光部 123:抗反射鍍膜 131:第一透鏡組 132:第二透鏡組 140、240、540:螢光輪 241、541:第一子區段 242、542:第二子區段 143、543:第一區段 144、244:第二區段 145:轉軸 149:反射式基板 150:色輪 160:光導管 170:匯聚透鏡 180:反射鏡 190:勻光元件 502:第二光源 503:第三透鏡組 504:二向色元件 999:光通道區域 A1、A2:面積 L1:第一光路徑 L2:第二光路徑 L3:第三光路徑 M1:黃色螢光物質 M2:綠色螢光物質 M3:紅色螢光物質 M4:藍色螢光物質 100, 500: light source system 101: radiator 110: light source 120: reflective element 121: Filter 122: Translucent part 123: Anti-reflective coating 131: The first lens group 132: Second lens group 140, 240, 540: Fluorescent wheel 241, 541: the first subsection 242, 542: second subsection 143, 543: First section 144, 244: Second section 145: shaft 149: reflective substrate 150: color wheel 160: light pipe 170: Convergent lens 180: mirror 190: homogenizing element 502: second light source 503: Third lens group 504: dichroic element 999: Optical channel area A1, A2: area L1: first light path L2: second light path L3: third light path M1: yellow fluorescent substance M2: Green fluorescent substance M3: Red fluorescent substance M4: blue fluorescent substance

為使本揭示之上述及其他目的、特徵、優點與實施方式能更明顯易懂，所附圖式之說明如下：第1圖為繪示依據本揭示一實施方式之光源系統的側視圖。第2圖為繪示第1圖所示之螢光輪的俯視圖。第3圖為繪示依據本揭示另一實施方式之螢光輪的俯視圖。第4圖為繪示第1圖所示之光源系統的反射元件的前視圖。第5圖為繪示依據本揭示另一實施方式之光源系統的側視圖。第6圖為繪示依據本揭示另一實施方式之螢光輪的俯視圖。第7圖為繪示依據本揭示另一實施方式之螢光輪的俯視圖。 In order to make the above and other objectives, features, advantages and implementations of the present disclosure more obvious and understandable, the description of the accompanying drawings is as follows: Figure 1 is a side view of a light source system according to an embodiment of the present disclosure. Figure 2 is a top view of the fluorescent wheel shown in Figure 1. FIG. 3 is a top view of a fluorescent wheel according to another embodiment of the present disclosure. Figure 4 is a front view of the reflective element of the light source system shown in Figure 1. Fig. 5 is a side view of a light source system according to another embodiment of the present disclosure. FIG. 6 is a top view of a fluorescent wheel according to another embodiment of the present disclosure. FIG. 7 is a top view of a fluorescent wheel according to another embodiment of the present disclosure.

100:光源系統 100: Light source system

101:散熱器 101: radiator

110:第一光源 110: First light source

120:反射元件 120: reflective element

131:第一透鏡組 131: The first lens group

132:第二透鏡組 132: Second lens group

140:螢光輪 140: Fluorescent Wheel

149:反射式基板 149: reflective substrate

150:色輪 150: color wheel

160:光導管 160: light pipe

170:匯聚透鏡 170: Convergent lens

180:反射鏡 180: mirror

190:勻光元件 190: homogenizing element

999:光通道區域 999: Optical channel area

A1、A2:面積 A1, A2: area

L1:第一光路徑 L1: first light path

L2:第二光路徑 L2: second light path

Claims

一種光源系統，包含：一第一光源，配置以發射一第一色光；一反射元件，配置以反射至少部分該第一色光；一透鏡組，配置以匯聚反射自該反射元件的該第一色光；以及一螢光輪，與該反射元件分別位於該透鏡組的相反兩側，並且具有一第一區段，該第一色光匯聚於該第一區段，並由該第一區段提供一第二色光，其中該第二色光通過該透鏡組而形成一光通道區域，該反射元件至少部分位於該光通道區域內，並遮擋到該光通道區域的部分截面。 A light source system, comprising: a first light source configured to emit a first color light; a reflective element configured to reflect at least part of the first color light; a lens group configured to converge and reflect the second color light from the reflective element A colored light; and a fluorescent wheel, and the reflective element are respectively located on opposite sides of the lens group, and have a first section, the first colored light is concentrated in the first section, and the first section The segment provides a second color light, wherein the second color light passes through the lens group to form a light channel area, and the reflective element is at least partially located in the light channel area and shields a partial cross section of the light channel area.

如請求項1所述之光源系統，其中該第一區段為一反射區段，且該第一色光自該反射區段反射而形成該第二色光。 The light source system according to claim 1, wherein the first section is a reflection section, and the first color light is reflected from the reflection section to form the second color light.

如請求項2所述之光源系統，其中該螢光輪還具有一第二區段，該第二區段配置以吸收該第一色光，並發射波長不同於該第一色光的該第三色光，該第三色光通過該透鏡組後進入該光通道區域。 The light source system according to claim 2, wherein the fluorescent wheel further has a second section configured to absorb the first color light and emit the third light having a wavelength different from the first color light Color light, the third color light enters the light channel area after passing through the lens group.

如請求項3所述之光源系統，其中該第一色光以及該第二色光為藍光，該第二區段包含以下至少其一：紅色螢光物質、綠色螢光物質以及黃色螢光物質。 The light source system according to claim 3, wherein the first color light and the second color light are blue light, and the second section includes at least one of the following: a red fluorescent substance, a green fluorescent substance, and a yellow fluorescent substance.

如請求項2所述之光源系統，其中該反射區段包含以下至少其一：白膠、摻有螢光粉的白膠、螢光粉層、介電鍍膜、金屬反射層以及光學反射貼片。 The light source system according to claim 2, wherein the reflective section includes at least one of the following: white glue, white glue doped with phosphor, phosphor layer, dielectric plating film, metal reflective layer, and optical reflective patch .

如請求項2所述之光源系統，其中該螢光輪包含一反射式基板，該反射區段位於該反射式基板上。 The light source system according to claim 2, wherein the fluorescent wheel includes a reflective substrate, and the reflective section is located on the reflective substrate.

如請求項1所述之光源系統，其中該第一區段為一波長轉換區段，該波長轉換區段配置以吸收該第一色光，並發射波長不同於該第一色光的該第二色光。 The light source system according to claim 1, wherein the first section is a wavelength conversion section, and the wavelength conversion section is configured to absorb the first color light and emit the first color light having a wavelength different from the first color light Two-color light.

如請求項7所述之光源系統，其中該第一色光為一紫外光，該波長轉換區段包含以下至少其一：紅色螢光物質、綠色螢光物質、藍色螢光物質以及黃色螢光物質。 The light source system according to claim 7, wherein the first color light is an ultraviolet light, and the wavelength conversion section includes at least one of the following: a red fluorescent substance, a green fluorescent substance, a blue fluorescent substance, and a yellow fluorescent substance Light matter.

如請求項1所述之光源系統，其中該反射元件為一反射鏡。 The light source system according to claim 1, wherein the reflecting element is a reflecting mirror.

如請求項1所述之光源系統，其中該反射元件為一分光鏡，該分光鏡具有一濾光部，該濾光部配置以至少部分反射該第一色光，並供其他色光通過。 The light source system according to claim 1, wherein the reflective element is a beam splitter, and the beam splitter has a filter part configured to at least partially reflect the first color light and allow other color lights to pass through.

如請求項10所述之光源系統，其中該濾光部的一面積小於該光通道區域的一截面積的70%。 The light source system according to claim 10, wherein an area of the filter part is less than 70% of a cross-sectional area of the light channel area.

如請求項10所述之光源系統，其中該第一區段為一反射區段，且該第一色光自該反射區段反射而形成該第二色光，該第一色光包含一第一偏振光，該第二色光包含該第一偏振光以及一第二偏振光，該第二偏振光的一偏振方向垂直於該第一偏振光的一偏振方向，該濾光部配置以反射該第一偏振光，並供該第二偏振光通過。 The light source system according to claim 10, wherein the first section is a reflection section, and the first color light is reflected from the reflection section to form the second color light, and the first color light includes a first Polarized light, the second color light includes the first polarized light and a second polarized light, a polarization direction of the second polarized light is perpendicular to a polarization direction of the first polarized light, and the filter portion is configured to reflect the first polarized light One polarized light, and the second polarized light passes through.

如請求項1所述之光源系統，進一步包含：一二向色元件，與該透鏡組分別位於該反射元件的相反兩側；以及一第二光源，配置以發射一第四色光，該第四色光自該二向色元件遠離該反射元件的一表面反射，並與該第二色光朝同一方向前進。 The light source system according to claim 1, further comprising: a dichroic element and the lens group are respectively located on opposite sides of the reflective element; and a second light source configured to emit a fourth color light, the fourth The colored light is reflected from a surface of the dichroic element away from the reflective element and travels in the same direction as the second colored light.