TWI803882B - Illumination system - Google Patents
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- TWI803882B TWI803882B TW110120791A TW110120791A TWI803882B TW I803882 B TWI803882 B TW I803882B TW 110120791 A TW110120791 A TW 110120791A TW 110120791 A TW110120791 A TW 110120791A TW I803882 B TWI803882 B TW I803882B
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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
- G03B21/208—Homogenising, shaping of the illumination light
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- 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
- G02B27/108—Beam splitting or combining systems for sampling a portion of a beam or combining a small beam in a larger one, e.g. wherein the area ratio or power ratio of the divided beams significantly differs from unity, without spectral selectivity
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- 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
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Abstract
Description
本發明是有關於一種照明系統,且特別是有關於一種具有合光模組的照明系統。 The present invention relates to a lighting system, and in particular to a lighting system with a light-combining module.
近來以發光二極體(light-emitting diode,LED)和雷射二極體(laser diode)等固態光源為主的投影裝置漸漸在市場上占有一席之地。由於雷射二極體具有高於約20%的發光效率,為了突破發光二極體的光源限制,因此漸漸發展了以雷射二極體作為所需的純色光源的投影裝置。 Recently, projection devices based on solid-state light sources such as light-emitting diodes (light-emitting diodes, LEDs) and laser diodes (laser diodes) gradually occupy a place in the market. Since the laser diode has a luminous efficiency higher than about 20%, in order to break through the light source limitation of the light emitting diode, projection devices using the laser diode as the required pure color light source have been gradually developed.
然而,現有採用以雷射光源的投影裝置的光路架構下,需要設置不同的合光元件,但目前採用了多個雷射二極體來作為作為所需的純色光源的投影裝置會具有合光結構占用體積大以及成本較高的問題,而採用了單一的三原色雷射二極體來作為所需的純色光源的投影裝置,則會具有光學效率低落或色均勻度不良的問題。 However, under the light path structure of the existing projection device using laser light source, it is necessary to set different light-combining elements, but currently using multiple laser diodes as the required pure-color light source projection device will have The structure occupies a large volume and the cost is high, and a projection device that uses a single three-primary-color laser diode as the required pure-color light source will have the problem of low optical efficiency or poor color uniformity.
“先前技術”段落只是用來幫助了解本發明內容,因此在“先前技術”段落所揭露的內容可能包含一些沒有構成所屬技術領 域中具有通常知識者所知道的習知技術。在“先前技術”段落所揭露的內容,不代表該內容或者本發明一個或多個實施例所要解決的問題,在本發明申請前已被所屬技術領域中具有通常知識者所知曉或認知。 The "Prior Art" paragraph is only used to help understand the content of the present invention, so the content disclosed in the "Prior Art" paragraph may contain some Known technology in the field known to those with ordinary knowledge. The content disclosed in the "Prior Art" paragraph does not mean that the content or the problems to be solved by one or more embodiments of the present invention have been known or recognized by those with ordinary knowledge in the technical field before the application of the present invention.
本發明提供一種照明系統,具有良好的光學效率和色均勻度以及小體積的優點。 The invention provides an illumination system with the advantages of good optical efficiency and color uniformity and small volume.
本發明的其他目的和優點可以從本發明所揭露的技術特徵中得到進一步的了解。 Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.
為達上述之一或部份或全部目的或是其他目的,本發明的一實施例提出一種照明系統。照明系統包括一光源模組以及一合光模組。光源模組為單一的三原色雷射二極體,適於分別提供一第一色光束、一第二色光束以及一第三色光束。合光模組具有彼此平行的一第一光學面、一第二光學面以及一第三光學面,其中第一光學面位於第一色光束、第二色光束以及第三色光束的傳遞路徑上,第二光學面位於第二色光束以及第三色光束的傳遞路徑上,以及第三光學面位於第三色光束的傳遞路徑上。第一光學面面向光源模組並位於光源模組與第二光學面之間,且第二光學面位於第一光學面與第三光學面之間。 In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a lighting system. The lighting system includes a light source module and a light combining module. The light source module is a single laser diode of three primary colors, which is suitable for providing a first color light beam, a second color light beam and a third color light beam respectively. The light combination module has a first optical surface, a second optical surface and a third optical surface parallel to each other, wherein the first optical surface is located on the transmission path of the first color light beam, the second color light beam and the third color light beam , the second optical surface is located on the transmission path of the second color light beam and the third color light beam, and the third optical surface is located on the transmission path of the third color light beam. The first optical surface faces the light source module and is located between the light source module and the second optical surface, and the second optical surface is located between the first optical surface and the third optical surface.
在本發明的一實施例中,上述的合光模組包括一第一分色元件以及一第二分色元件。第一分色元件的彼此相對的兩表面 分別為第一光學面與第二光學面,且第一光學面朝向光源模組。第二分色元件的其中一表面為第三光學面。在本發明的一實施例中,上述的合光模組包括一第一分色元件、一第二分色元件以及一第三分色元件。第一分色元件位於第一色光束的傳遞路徑上,其中第一分色元件朝向光源模組的表面為第一光學面。第二分色元件位於第二色光束的傳遞路徑上,其中第二分色元件朝向第一分色元件的表面為第二光學面。第三分色元件位於第三色光束的傳遞路徑上,其中第三分色元件朝向第二分色元件的表面為第三光學面。在本發明的一實施例中,上述的第一色光束、第二色光束以及第三色光束經由第一光學面入射合光模組,第一色光束被第一光學面反射,且第二色光束穿透第一光學面後被第二光學面反射並再次穿透第一光學面,且第三色光束依序穿透第一光學面與第二光學面後,被第三光學面反射並再次依序穿透第二光學面與第一光學面,之後,第一色光束、第二色光束以及第三色光束合併成一照明光束。在本發明的一實施例中,上述的合光模組包括一第一鍍膜、一第二鍍膜以及一第三鍍膜。第一鍍膜位於第一光學面上,其中第一鍍膜適於反射第一色光束,並使第二色光束以及第三色光束穿透。第二鍍膜位於第二光學面上,其中第二鍍膜適於反射第二色光束,並使第三色光束穿透。第三鍍膜位於第三光學面上,其中第三鍍膜適於反射第三色光束。在本發明的一實施例中,上述的光源模組包括一第一光源、一第二光源以及一第三光源,第一光源適於提供第一色光束,第二光源適於提供第 二色光束,且第三光源適於提供第三色光束,且第一光源、第二光源以及第三光源為封裝在光源模組的雷射二極體元件。 In an embodiment of the present invention, the above-mentioned light combining module includes a first color separation element and a second color separation element. The opposite surfaces of the first dichroic element They are respectively the first optical surface and the second optical surface, and the first optical surface faces the light source module. One of the surfaces of the second dichroic element is the third optical surface. In an embodiment of the present invention, the above light combination module includes a first color separation element, a second color separation element and a third color separation element. The first dichroic element is located on the transmission path of the first color light beam, wherein the surface of the first dichroic element facing the light source module is the first optical surface. The second dichroic element is located on the transmission path of the second color light beam, wherein the surface of the second dichroic element facing the first dichroic element is the second optical surface. The third dichroic element is located on the transmission path of the third color light beam, wherein the surface of the third dichroic element facing the second dichroic element is a third optical surface. In an embodiment of the present invention, the above-mentioned first color light beam, second color light beam and third color light beam enter the light combination module through the first optical surface, the first color light beam is reflected by the first optical surface, and the second color light beam After passing through the first optical surface, the colored light beam is reflected by the second optical surface and passes through the first optical surface again, and the third colored light beam sequentially passes through the first optical surface and the second optical surface, and is reflected by the third optical surface And pass through the second optical surface and the first optical surface again in sequence, after that, the first color light beam, the second color light beam and the third color light beam merge into an illumination light beam. In an embodiment of the present invention, the above-mentioned light-combining module includes a first coating, a second coating and a third coating. The first coating is located on the first optical surface, wherein the first coating is suitable for reflecting the first color light beam and allowing the second color light beam and the third color light beam to pass through. The second coating is located on the second optical surface, wherein the second coating is suitable for reflecting the second color light beam and allowing the third color light beam to pass through. The third coating is located on the third optical surface, wherein the third coating is suitable for reflecting the third color light beam. In an embodiment of the present invention, the above-mentioned light source module includes a first light source, a second light source and a third light source, the first light source is suitable for providing the first color beam, and the second light source is suitable for providing the first color beam The two-color light beam, and the third light source is suitable for providing the third color light beam, and the first light source, the second light source and the third light source are laser diode elements packaged in the light source module.
為達上述之一或部份或全部目的或是其他目的,本發明的一實施例提出一種照明系統。照明系統包括一第一色雷射光源、一第二色雷射光源、一第三色雷射光源、一第一分色膜、一第二分色膜以及一第三分色膜。第一分色膜位於第一色雷射光源的第一光路下游。第二分色膜位於第二色雷射光源的第二光路下游。第三分色膜位於第三色雷射光源的第三光路下游。第一分色膜和第二分色膜和第三分色膜彼此平行,部分第一光路、部分第二光路和部分第三光路彼此平行,且第一分色膜設於第二分色膜和第一色雷射光源的光路之間。在本發明的一實施例中,上述的第一色雷射光源適於提供一第一色光束,第二色雷射光源適於提供一第二色光束,且第三色雷射光源適於提供一第三色光束,且第一色雷射光源、第二色雷射光源以及第三色雷射光源為封裝在一單一的三原色雷射二極體中的雷射二極體元件。 In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a lighting system. The lighting system includes a first color laser light source, a second color laser light source, a third color laser light source, a first color separation film, a second color separation film and a third color separation film. The first dichroic film is located downstream of the first optical path of the first color laser light source. The second dichroic film is located downstream of the second optical path of the second color laser light source. The third dichroic film is located downstream of the third optical path of the third color laser light source. The first dichroic film, the second dichroic film and the third dichroic film are parallel to each other, part of the first optical path, part of the second optical path and part of the third optical path are parallel to each other, and the first dichroic film is arranged on the second dichroic film and between the light path of the first color laser light source. In an embodiment of the present invention, the above-mentioned first color laser light source is suitable for providing a first color light beam, the second color laser light source is suitable for providing a second color light beam, and the third color laser light source is suitable for A third color light beam is provided, and the first color laser light source, the second color laser light source and the third color laser light source are laser diode elements packaged in a single three primary color laser diode.
為達上述之一或部份或全部目的或是其他目的,本發明的一實施例提出一種照明系統。照明系統包括一第一顏色準直光源、一第二顏色準直光源一第三顏色準直光源一第一分色膜一第二分色膜以及一反射膜。第一顏色準直光源提供一第一顏色光束。第二顏色準直光源提供一第二顏色光束。第三顏色準直光源提供一第三顏色光束。第一分色膜配置於第一顏色光束、第二顏色光束及第三顏色光束的傳遞路徑上。第二分色膜配置於第一顏 色光束及第二顏色光束的傳遞路徑上;反射膜配置於第一顏色光束的傳遞路徑上。第一顏色光束會依序穿透第一分色膜與第二分色膜,被反射膜反射,再依序穿透第二分色膜與第一分色膜,第二顏色光束會依序穿透第一分色膜、被第二分色膜反射及穿透第一分色膜,第三顏色光束會被第一分色膜反射,且第一分色膜和第二分色膜和反射膜彼此平行。 In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a lighting system. The lighting system includes a first color collimated light source, a second color collimated light source, a third color collimated light source, a first dichroic film, a second dichroic film and a reflective film. The first color collimated light source provides a first color light beam. The second color collimated light source provides a second color light beam. The third color collimated light source provides a third color light beam. The first dichroic film is arranged on the transmission path of the first color light beam, the second color light beam and the third color light beam. The second dichroic film is configured on the first color The transmission path of the colored light beam and the second color light beam; the reflective film is arranged on the transmission path of the first color light beam. The light beam of the first color will pass through the first dichroic film and the second dichroic film in sequence, be reflected by the reflective film, and then pass through the second dichroic film and the first dichroic film in sequence, and the light beam of the second color will be sequentially Penetrating through the first dichroic film, being reflected by the second dichroic film and penetrating the first dichroic film, the light beam of the third color will be reflected by the first dichroic film, and the first dichroic film and the second dichroic film and The reflective films are parallel to each other.
基於上述,本發明的實施例至少具有以下其中一個優點或功效。在本發明的實施例中,照明系統藉由合光模組的第一光學面、第二光學面以及一第三光學面的配置,即可達到合光的功能,而不需使用其他的合光結構,如此可簡化製作過程並降低製作成本,而有利於大量生產。並且,在本發明的實施例中,由於光源模組可為單一的三原色雷射二極體,合光模組的第一分色元件以及第二分色元件之間的間距可因而對應地縮減,因此可有利於縮減合光模組的體積,進而可有效縮小照明系統的體積。此外,在本發明的實施例中,照明系統可基於合光模組的各元件的折射率,來適當設計各光束與各光學面之間的間距,而使得第一色光束、第二色光束以及第三色光束可由合光模組的第一光學面的相同位置出光,進而可使合併而成的照明光束具有良好的光學效率和色均勻度。 Based on the above, the embodiments of the present invention have at least one of the following advantages or functions. In the embodiment of the present invention, the lighting system can achieve the function of combining light through the arrangement of the first optical surface, the second optical surface and a third optical surface of the light combining module without using other combining elements. The light structure can simplify the manufacturing process and reduce the manufacturing cost, and is beneficial to mass production. Moreover, in the embodiment of the present invention, since the light source module can be a single three-primary-color laser diode, the distance between the first dichroic element and the second dichroic element of the light-combining module can be correspondingly reduced , so it is beneficial to reduce the volume of the light-combining module, thereby effectively reducing the volume of the lighting system. In addition, in the embodiment of the present invention, the lighting system can properly design the distance between each light beam and each optical surface based on the refractive index of each component of the light combining module, so that the first color light beam, the second color light beam And the third color light beam can emit light from the same position of the first optical surface of the light combination module, so that the combined illumination light beam can have good optical efficiency and color uniformity.
為讓本發明的上述特徵和優點能更明顯易懂,下文特舉實施例,並配合所附圖式作詳細說明如下。 In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.
100、200:照明系統 100, 200: lighting system
110:光源模組 110:Light source module
111:第一光源 111: The first light source
112:第二光源 112: Second light source
113:第三光源 113: The third light source
120、220:合光模組 120, 220: combined light module
121:第一分色元件 121: The first color separation component
122:第二分色元件 122: Second color separation element
223:第三分色元件 223: The third color separation component
D1、D2:最小距離 D1, D2: minimum distance
F1:第一鍍膜 F1: first coating
F2:第二鍍膜 F2: Second coating
F3:第三鍍膜 F3: The third coating
L:照明光束 L: lighting beam
L1:第一色光束 L1: first color beam
L2:第二色光束 L2: Second color beam
L3:第三色光束 L3: Tertiary color beam
P1、P2:間距 P1, P2: Pitch
SS1:第一側表面 SS1: first side surface
SS2:第二側表面 SS2: Second side surface
S1:第一光學面 S1: the first optical surface
S2:第二光學面 S2: second optical surface
S3:第三光學面 S3: The third optical surface
W1、W2:寬度尺寸 W1, W2: Width size
圖1是本發明一實施例的一種照明系統的光學架構示意圖。 FIG. 1 is a schematic diagram of an optical architecture of an illumination system according to an embodiment of the present invention.
圖2是本發明一實施例的一種照明系統的光學架構示意圖。 Fig. 2 is a schematic diagram of an optical architecture of an illumination system according to an embodiment of the present invention.
有關本發明之前述及其他技術內容、特點與功效,在以下配合參考圖式之一較佳實施例的詳細說明中,將可清楚的呈現。以下實施例中所提到的方向用語,例如:上、下、左、右、前或後等,僅是參考附加圖式的方向。因此,使用的方向用語是用來說明並非用來限制本發明。 The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms used are for the purpose of illustration and not for the purpose of limiting the invention.
圖1是本發明一實施例的一種照明系統的光學架構示意圖。請參照圖1,在本實施例中,照明系統100包括一光源模組110以及一合光模組120,並適於應用至一投影裝置中。光源模組110適於分別提供一第一色光束L1、一第二色光束L2以及一第三色光束L3。具體而言,如圖1所示,在本實施例中,光源模組110包括一第一光源111、一第二光源112以及一第三光源113,第一光源111適於提供第一色光束L1,第二光源112適於提供第二色光束L2,且第三光源113適於提供第三色光束L3。舉例而言,在本實施例中,第一光源111可為藍光雷射二極體,且第一色光束L1為藍光雷射光束;第二光源112可為綠光雷射二極體,且第二色光束L2為綠光雷射光束;第三光源113可為紅光雷射二極體,
且第三色光束L3為紅光雷射光束。此外,在本實施例中,光源模組110可為一三原色雷射二極體,而第一光源111、第二光源112以及第三光源113為封裝在其中的雷射二極體元件,但本發明不以此為限。
FIG. 1 is a schematic diagram of an optical architecture of an illumination system according to an embodiment of the present invention. Please refer to FIG. 1 , in this embodiment, the
另一方面,如圖1所示,在本實施例中,合光模組120具有彼此平行的一第一光學面S1、一第二光學面S2以及一第三光學面S3。第一光學面S1面向光源模組110並位於光源模組110與第二光學面S2之間,且第二光學面S2位於第一光學面S1與第三光學面S3之間。
On the other hand, as shown in FIG. 1 , in this embodiment, the
具體而言,在本實施例中,合光模組120包括一第一分色元件121以及一第二分色元件122。第一分色元件121位於第一色光束L1、第二色光束L2以及第三色光束L3的傳遞路徑上,其中第一分色元件121的彼此相對的兩表面分別為第一光學面S1與第二光學面S2,且第一光學面S1朝向光源模組110。第二分色元件122位於第三色光束L3的傳遞路徑上,其中第二分色元件122朝向第一分色元件121的表面為第三光學面S3。
Specifically, in this embodiment, the
具體而言,在本實施例中,合光模組120的第一光學面S1、第二光學面S2以及第三光學面S3可分別鍍有不同的分色膜或反射膜,以對第一色光束L1、第二色光束L2以及第三色光束L3分別提供反射或穿透的作用。舉例而言,如圖1所示,在本實施例中,合光模組120包括一第一鍍膜F1、一第二鍍膜F2以及一第三鍍膜F3。如圖1所示,第一鍍膜F1位於第一光學面S1上,
且第一鍍膜F1可為藍光反射膜(DMB),可反射藍光,並使紅光與綠光穿透,而適於反射第一色光束L1,並使第二色光束L2以及第三色光束L3穿透。並且,如圖1所示,第二鍍膜F2位於第二光學面S2上,且第二鍍膜F2可為綠光反射膜(DMG),可反射綠光,並使紅光穿透,而適於反射第二色光束L2,並使第三色光束L3穿透。此外,如圖1所示,第三鍍膜F3位於第三光學面S3上,且第三鍍膜F3可為紅光反射膜(DMR)或一般的反射膜,而適於反射第三色光束L3。
Specifically, in this embodiment, the first optical surface S1, the second optical surface S2, and the third optical surface S3 of the
如此,如圖1所示,當第一色光束L1、第二色光束L2以及第三色光束L3經由第一光學面S1入射合光模組120時,第一色光束L1會被第一光學面S1反射。並且,第二色光束L2會穿透第一光學面S1後被第二光學面S2反射並再次穿透第一光學面S1。此外,第三色光束L3會依序穿透第一光學面S1與第二光學面S2後,被第三光學面S3反射並再次依序穿透第二光學面S2與第一光學面S1。之後,第一色光束L1、第二色光束L2以及第三色光束L3即可合併成一照明光束L。
In this way, as shown in FIG. 1 , when the first color light beam L1, the second color light beam L2 and the third color light beam L3 enter the
進一步而言,如圖1所示,由於第一色光束L1、第二色光束L2以及第三色光束L3入射合光模組120的第一光學面S1彼此平行,且合光模組120的第一光學面S1、第二光學面S2以及第三光學面S3也彼此平行,因此只要基於第一分色元件121與第二分色元件122的折射率,來適當設計第一色光束L1、第二色光束L2以及第三色光束L3之間的間距以及第一光學面S1、第二
光學面S2以及第三光學面S3之間的間距,第一色光束L1、第二色光束L2以及第三色光束L3即可由合光模組120的第一光學面S1的相同位置出光,進而可使合併而成的照明光束L具有良好的光學效率和色均勻度。
Further, as shown in FIG. 1 , since the first optical surface S1 of the first color light beam L1, the second color light beam L2 and the third color light beam L3 incident on the
也就是說,如圖1所示,第一色光束L1與第二色光束L2之間的間距P1、第二色光束L2與第三色光束L3之間的間距P2、第一光學面S1與第二光學面S2之間的間距的範圍(即圖1所示的第一分色元件121的寬度尺寸W1)以及第二光學面S2與第三光學面S3之間的間距的範圍(即圖1所示的第一分色元件121與第二分色元件122之間的最小距離D1)可依據第一分色元件121與第二分色元件122的折射率來進行計算與設計,而可使第一色光束L1、第二色光束L2以及第三色光束L3由合光模組120的第一光學面S1的相同位置出光,進而可使合併而成的照明光束L具有良好的光學效率和色均勻度。
That is to say, as shown in FIG. 1, the distance P1 between the first color light beam L1 and the second color light beam L2, the distance P2 between the second color light beam L2 and the third color light beam L3, the distance between the first optical surface S1 and the third color light beam L3 The range of the distance between the second optical surface S2 (that is, the width dimension W1 of the first
如此一來,照明系統100藉由合光模組120的第一光學面S1、第二光學面S2以及一第三光學面S3的配置,即可達到合光的功能,而不需使用其他的合光結構,如此可簡化製作過程並降低製作成本,而有利於大量生產。並且,由於光源模組110可為單一的三原色雷射二極體,合光模組120的第一分色元件121以及第二分色元件122之間的間距可因而對應地縮減,因此可有利於縮減合光模組120的體積,進而可有效縮小照明系統100的體積。
In this way, the
圖2是本發明一實施例的一種照明系統的光學架構示意圖。請參照圖2,圖2的照明系統200與圖1的照明系統100類似,而差異如下所述。具體而言,如圖2所示,在本實施例中,合光模組220還包括一第三分色元件223。並且,如圖2所示,在本實施例中,第一分色元件221位於第一色光束L1、第二色光束L2以及第三色光束L3的傳遞路徑上,其中第一分色元件221朝向光源模組110的表面為第一光學面S1。第二分色元件222位於第二色光束L2以及第三色光束L3的傳遞路徑上,其中第二分色元件222朝向第一分色元件221的表面為第二光學面S2。第三分色元件223位於第三色光束L3的傳遞路徑上,其中第三分色元件223朝向第二分色元件222的表面為第三光學面S3。
Fig. 2 is a schematic diagram of an optical architecture of an illumination system according to an embodiment of the present invention. Please refer to FIG. 2 , the
如此,如圖2所示,當第一色光束L1、第二色光束L2以及第三色光束L3經由第一分色元件221的第一光學面S1入射合光模組220時,第一色光束L1會被第一光學面S1反射。並且,第二色光束L2會穿透第一分色元件221的第一光學面S1後被第二分色元件222的第二光學面S2反射並再次穿透第一分色元件221的第一光學面S1。此外,第三色光束L3會依序穿透第一分色元件221的第一光學面S1與第二分色元件222的第二光學面S2後,被第三分色元件223的第三光學面S3反射並再次依序穿透第二分色元件222的第二光學面S2與第一分色元件221的第一光學面S1。之後,第一色光束L1、第二色光束L2以及第三色光束L3即可合併成照明光束L。
In this way, as shown in FIG. 2, when the first color light beam L1, the second color light beam L2, and the third color light beam L3 enter the
類似地,在本實施例中,照明系統200亦可基於第一分色元件221、第二分色元件222以及第三分色元件223的折射率,來適當設計第一色光束L1、第二色光束L2以及第三色光束L3之間的間距以及第一光學面S1、第二光學面S2以及第三光學面S3之間的間距,第一色光束L1、第二色光束L2以及第三色光束L3即可由合光模組220的第一光學面S1的相同位置出光,進而可使合併而成的照明光束L具有良好的光學效率和色均勻度。
Similarly, in this embodiment, the
進一步而言,如圖2所示,第一色光束L1與第二色光束L2之間的間距P1、第二色光束L2與第三色光束L3之間的間距P2、第一光學面S1與第二光學面S2之間的間距的範圍則會由第一分色元件221的寬度尺寸W1與第一分色元件221與第二分色元件222之間的最小距離D1所決定、第二光學面S2與第三光學面S3之間的間距的範圍則會由第二分色元件222的寬度尺寸W2與第二分色元件222與第三分色元件223之間的最小距離D2所決定,上述這些參數則可依據第一分色元件221、第二分色元件222以及第三分色元件223的折射率來進行計算與設計,而可使第一色光束L1、第二色光束L2以及第三色光束L3由合光模組120的第一光學面S1的相同位置出光,進而可使合併而成的照明光束L具有良好的光學效率和色均勻度。
Further, as shown in FIG. 2, the distance P1 between the first color light beam L1 and the second color light beam L2, the distance P2 between the second color light beam L2 and the third color light beam L3, the distance between the first optical surface S1 and the The range of the distance between the second optical surfaces S2 will be determined by the width dimension W1 of the first
如此一來,由於圖2的照明系統200與圖1的照明系統100具有相似的結構,而能藉由合光模組220彼此平行的第一光學面S1、第二光學面S2以及一第三光學面S3的配置來達到相同的
功能,因此的照明系統200能達到與前述的照明系統100類似的效果與優點,在此就不再贅述。
In this way, since the
綜上所述,本發明的實施例至少具有以下其中一個優點或功效。在本發明的實施例中,照明系統藉由合光模組的第一光學面、第二光學面以及一第三光學面的配置,即可達到合光的功能,而不需使用其他的合光結構,如此可簡化製作過程並降低製作成本,而有利於大量生產。並且,在本發明的實施例中,由於光源模組可為單一的三原色雷射二極體,合光模組的第一分色元件以及第二分色元件之間的間距可因而對應地縮減,因此可有利於縮減合光模組的體積,進而可有效縮小照明系統的體積。此外,在本發明的實施例中,照明系統可基於合光模組的各元件的折射率,來適當設計各光束與各光學面之間的間距,而使得第一色光束、第二色光束以及第三色光束可由合光模組的第一光學面的相同位置出光,進而可使合併而成的照明光束具有良好的光學效率和色均勻度。 In summary, the embodiments of the present invention have at least one of the following advantages or effects. In the embodiment of the present invention, the lighting system can achieve the function of combining light through the arrangement of the first optical surface, the second optical surface and a third optical surface of the light combining module without using other combining elements. The light structure can simplify the manufacturing process and reduce the manufacturing cost, and is beneficial to mass production. Moreover, in the embodiment of the present invention, since the light source module can be a single three-primary-color laser diode, the distance between the first dichroic element and the second dichroic element of the light-combining module can be correspondingly reduced , so it is beneficial to reduce the volume of the light-combining module, thereby effectively reducing the volume of the lighting system. In addition, in the embodiment of the present invention, the lighting system can properly design the distance between each light beam and each optical surface based on the refractive index of each component of the light combining module, so that the first color light beam, the second color light beam And the third color light beam can emit light from the same position of the first optical surface of the light combination module, so that the combined illumination light beam can have good optical efficiency and color uniformity.
惟以上所述者,僅為本發明之較佳實施例而已,當不能以此限定本發明實施之範圍,即大凡依本發明申請專利範圍及發明說明內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。另外本發明的任一實施例或申請專利範圍不須達成本發明所揭露之全部目的或優點或特點。此外,摘要部分和標題僅是用來輔助專利文件搜尋之用,並非用來限制本發明之權利範圍。此外,本說明書或申請專利範圍中提及的“第一”、“第二”等用 語僅用以命名元件(element)的名稱或區別不同實施例或範圍,而並非用來限制元件數量上的上限或下限。 But the above-mentioned ones are only preferred embodiments of the present invention, and the scope of implementation of the present invention cannot be limited with this, that is, all simple equivalent changes and modifications made according to the patent scope of the present invention and the contents of the description of the invention, All still belong to the scope covered by the patent of the present invention. In addition, any embodiment or scope of claims of the present invention does not need to achieve all the objectives or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist the search of patent documents, and are not used to limit the scope of rights of the present invention. In addition, "first" and "second" mentioned in this specification or the scope of the patent application are used The terms are only used to name elements or to distinguish different embodiments or ranges, and are not used to limit the upper limit or lower limit of the number of elements.
100:照明系統 100: Lighting system
110:光源模組 110:Light source module
111:第一光源 111: The first light source
112:第二光源 112: Second light source
113:第三光源 113: The third light source
120:合光模組 120: Combined light module
121:第一分色元件 121: The first color separation component
122:第二分色元件 122: Second color separation element
D1:最小距離 D1: minimum distance
F1:第一鍍膜 F1: first coating
F2:第二鍍膜 F2: Second coating
F3:第三鍍膜 F3: The third coating
L:照明光束 L: lighting beam
L1:第一色光束 L1: first color beam
L2:第二色光束 L2: Second color beam
L3:第三色光束 L3: Tertiary color beam
P1、P2:間距 P1, P2: Pitch
S1:第一光學面 S1: the first optical surface
S2:第二光學面 S2: second optical surface
S3:第三光學面 S3: The third optical surface
W1:寬度尺寸 W1: Width size
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CN102770794A (en) * | 2010-02-25 | 2012-11-07 | 康宁股份有限公司 | Illumination system for laser projection |
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