CN100412612C - Double-lamp frame for L-shape optical machine - Google Patents
Double-lamp frame for L-shape optical machine Download PDFInfo
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- CN100412612C CN100412612C CNB2005100818656A CN200510081865A CN100412612C CN 100412612 C CN100412612 C CN 100412612C CN B2005100818656 A CNB2005100818656 A CN B2005100818656A CN 200510081865 A CN200510081865 A CN 200510081865A CN 100412612 C CN100412612 C CN 100412612C
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Abstract
The present invention provides a projection system light source module. Said light source module contains first and second light source for generating first and second light; first and second reflection mirror respectively located said first and second light path for controlling said first and said second light transferring direction; one light accumulation device having first prism column, second prism column and one light accumulation column, configured rear said first and second reflection mirror; wherein when said first and second light incoming said light accumulation device through primary reflection, each light respectively received by said first and prism of prism column, and through total reflection to collect to said light accumulation column for making homogenization.
Description
Technical field
The present invention is relevant with the light source module of an optical projection system, and is particularly relevant with the light source module that is used for L type ray machine optical projection system.
Background technology
In recent years, projection display system has been widely used in the every field, for example throws before image projection system in common projection bulletin and multimedia show system, the cinema and the family expenses formula more and more popularized in the conference hall or back projection type televisor etc.In simple terms, common optical projection system mainly can be divided into light source module, branch/close main members such as light optical element, light valve module and lens combination, and wherein, the light source module is to influence optical projection system brightness and the topmost member of color uniformity coefficient.The employed light source module of optical projection system mainly is made up of a light source and a plurality of optical frames group at present.These optical frames groups are except in order to the direction of transfer of adjusting light, and also are used for equalizing light rays that this light source is launched.
In general, the optical-mechanical system of optical projection system can be distinguished into S type ray machine and L type ray machine (shown in Fig. 1 (A) and Fig. 1 (B)) according to the direction of transfer of light; Wherein therefore L type ray machine is applied even more extensively on many optical projection systems owing to simple in structure.But, no matter be L type ray machine or S type ray machine, in the design of light source module, usually all the direction of illumination of bulb can be designed to vertically with the projecting direction of optical projection system, can under the angle that tilts, project uniform light to allow optical projection system; And for the light source module that uses single bulb, no matter be that L type ray machine or S type ray machine can easily follow this principle to design.Yet, because it is more and more higher on the market for the requirement of brightness that shows product and color uniformity coefficient, the design of light source module is also more and more exquisite, thereby in order effectively to promote the brightness of optical projection system, increasing optical projection system begins to adopt the illumination framework in many lamps source that light source is provided.But when using the illumination framework in many lamps source, the light source module just can begin to meet with new problem in design.At first, the light source module of many lamps source lighting framework must solve the light that how to allow from different lamps source and be coupled well, with lifting light source service efficiency, and avoids the mutual interference of light phase, problems such as aberration generation.Secondly, in the optical projection system of using L type ray machine, how making the direction of illumination of bulb be designed to keep vertically with the projecting direction of optical projection system, also is the challenge that urgent need overcomes.
In order to address these problems, this case applicant once proposed " light illumination framework and light accumulation device more than the optical projection system " TaiWan, China patented claim (No. 92128258 application case) on October 13rd, 92, it utilizes a novel light accumulation device, receive light effectively, again the light that received is exported after whole and the homogenizing with giving converging subsequently from the multiple light source illumination framework.See also shown in Fig. 1 (A), it represents a light source module of this patent application case.This light source module 10 mainly comprises the first lamp source group 11, the second lamp source group 12 and a light accumulation device 13; Wherein respectively comprise a bulb 111,121 and a reflection lampshade 112,122 respectively in this lamp source group 11,12, respectively the light a, the b that are launched of this bulb 111,121 is through respectively promptly projecting on this light accumulation device 13 after these reflection lampshade 112,122 reflections.The accompanying drawing that the detailed construction of this light accumulation device 13 can further be consulted Fig. 2 (B) illustrates.This light accumulation device 13 comprises first and second prism columns 131,132 and a light accumulation column 133; Wherein, use so that the direction transmission of past this light accumulation column 133 of the direction of transfer of this incident ray a, b respectively also comprising a reflecting surface 1312,1322 of spending respectively on this prism columns with an incidence surface 1311,1321 folders 45.
The light source module that even now has double-lamp frame can effectively solve the not good problem of light source service efficiency, yet, when it is applied to the optical projection system of L type ray machine, because the direction of illumination in two lamp sources and the projecting direction of optical projection system are parallel to each other, thereby also limit the allowed angle of inclination of optical projection system.Moreover on the bulb life of considering the light source module and heat dissipation design, the angle of common two bulbs all can design as far as possible under the situation less than 20 degree; Therefore, aforesaid light source module is necessary further to improve, to meet these special design requirements.
Comprehensive the above, the invention motivation of this case promptly produces therefrom.Although previous " the multiple light source illumination framework and the light accumulation device of optical projection system " that proposes of applicant overcome the not good problem of light source service efficiency, so for the optical projection system of using L type ray machine, applied light source module is its light source irradiation direction of improvement further, and the beginning can allow optical projection system to be applicable to range of application widely.Therefore, the present invention is the innovative techniques that further develops based on case " light illumination framework and light accumulation device more than the optical projection system " before previous proposed relevant of applicant, and consider the demand of bulb life and heat management in the light source module simultaneously, but with the range of application of this light source module of further lifting.
Summary of the invention
First conception of the present invention is to provide a kind of light source module of optical projection system, and this light source module comprises first and second light source, in order to produce first and second light; First and second catoptron lays respectively on the light path (light path) of this first and second light, with control this first with the direction of transfer of this second light; And a light accumulation device, having first prism columns, second prism columns and a light accumulation column, this light accumulation device is configured on light path after this first and second catoptron.
According to above-mentioned conception, wherein this first and second light receives via this first and second prism columns prism respectively, and sees through total reflection and be pooled to this light accumulation column to carry out homogenizing.
According to above-mentioned conception, wherein an incidence surface of this light accumulation column with engage with the exiting surface of this first and second prism columns respectively, to compile and this first and second light of homogenizing.
According to above-mentioned conception, wherein this light accumulation device also comprises a metal bracket, to fix this first prism columns, this second prism columns and this light accumulation column.
According to above-mentioned conception, a plurality of grooves of this metal bracket tool wherein are so that this first prism columns, this second prism columns and this light accumulation column contact with this metal bracket support level on an xsect.
According to above-mentioned conception, wherein this metal bracket also comprises a pedestal, first bogie side frame, second bogie side frame, a gland and a baffle plate.
According to above-mentioned conception, wherein at least one long side surface of this first and second prism columns is fixed between this pedestal and this first bogie side frame.
According to above-mentioned conception, wherein at least one long side surface of this light accumulation column is fixed between this pedestal and this second bogie side frame.
According to above-mentioned conception, wherein the front/rear end of this first and second prism columns and this light accumulation column is fixed by this gland and this baffle plate respectively.
According to above-mentioned conception, wherein this light source module also comprises two ultraviolet light filters (UV-filter), is separately positioned between this first and second light source and this first and second catoptron.
According to above-mentioned conception, wherein this first and second prism columns tool one incidence surface and reflecting surface respectively, and this incidence surface and this reflecting surface form an angle theta.
According to above-mentioned conception, wherein this angle theta satisfies following formula: θ=1/2[90 °+sin
-1(sin (A)/n)], wherein A is the incident angle of this incidence surface of incident of light, n is the refractive index of prism columns.
Second conception of the present invention is to provide a kind of long-pending optical mode group of optical projection system, and this long-pending optical mode group comprises first prism columns, and it has first incidence surface, first exiting surface and first reflecting surface; Second prism columns, it has second incidence surface, second exiting surface and second reflecting surface, and wherein this second prism columns is arranged in parallel along the long axis direction of this first prism columns; One light accumulation column, it has the 3rd incidence surface and the 3rd exiting surface, and wherein this first and second exiting surface engages with the 3rd incidence surface respectively; And a metal bracket, in order to carrying and calibrate this first prism columns, the second prism group and this light accumulation column.
According to above-mentioned conception, wherein this metal bracket also comprises a pedestal, first bogie side frame, second bogie side frame, a gland and a baffle plate.
According to above-mentioned conception, wherein at least one long side surface of this first and second prism columns is fixed between this pedestal and this first bogie side frame.
According to above-mentioned conception, wherein at least one long side surface of this light accumulation column is fixed between this pedestal and this second bogie side frame.
According to above-mentioned conception, wherein rear end face is fixed by this gland and this baffle plate respectively before this first and second prism columns and this light accumulation column.
According to above-mentioned conception, a plurality of grooves of this metal bracket tool wherein are so that this first prism columns, this second prism columns and this light accumulation column contact with this metal bracket support level respectively on an xsect.
The 3rd conception of the present invention is to provide the light source module of an optical projection system, and this light source module comprises a lamp box, and it has at least one pair of lamp source and at least one pair of catoptron, in order to launch first and second light; One light accumulation device, it comprises an a pair of prism columns and a light accumulation column, in order to transmission and this first and second light of homogenizing, and a metal bracket, in order to carry and to calibrate this, to reduce the loss of this first and second light transmission and homogenization process to prism columns and this light accumulation column.
According to above-mentioned conception, wherein this a pair of exiting surface to prism columns is an incidence surface that is engaged in this light accumulation column fully, so that this first and second light is delivered to this light accumulation column via total reflection, and accumulates homogenizing light source output.
According to above-mentioned conception, wherein this first and second light respectively after primary event incident this to prism columns.
According to above-mentioned conception, wherein this to catoptron respectively in order to adjust this this position of first and second light incident to prism columns.
According to above-mentioned conception, wherein this is to light source and this is to also comprising a pair of ultraviolet light filter between the catoptron.
According to above-mentioned conception, a plurality of grooves of this metal bracket tool wherein are so that this contacts with this metal bracket support level respectively on an xsect prism columns and this light accumulation column.
According to above-mentioned conception, wherein this metal bracket also comprises a pedestal, first bogie side frame, second bogie side frame, a gland and a baffle plate.
According to above-mentioned conception, wherein this at least one long side surface to prism columns is fixed between this pedestal and this first bogie side frame.
According to above-mentioned conception, wherein at least one long side surface of this light accumulation column is fixed between this pedestal and this second bogie side frame.
According to above-mentioned conception, wherein this front/rear end to prism columns and this light accumulation column is fixed by this gland and this baffle plate respectively.
Comprehensive the above, light source module provided by the present invention not only can promote the utilization rate of light source, also can make the direction of illumination of bulb, with the projecting direction of optical projection system keep vertical, with the usable range of increase optical projection system.In addition, light accumulation device provided by the present invention not only can cooperate light source position to change and designs, and more can be under the situation that does not increase other complicated elements, the fixing and location of finishing this light accumulation device simply.
This case will get a more deep understanding by following accompanying drawing and detailed description:
Description of drawings
Fig. 1 (A) and Fig. 1 (B) represent S type ray machine and the L type ray machine optical projection system that the direction of transfer according to light defines respectively;
Fig. 2 (A) expression is according to the light source module of an optical projection system of prior art;
The constitutional diagram of the light accumulation device among Fig. 2 (B) presentation graphs 2 (A);
Fig. 3 represents the structural representation of a light source module of a preferred embodiment of the present invention;
The structural drawing of first prism columns among this Fig. 3 of expression shown in Figure 4;
Fig. 5 (A) and Fig. 5 (B) then represent according to two kinds of light accumulation device of the present invention possible arrangement modes;
Fig. 6 (A) expression is according to the upright graph of a relation of the group of long-pending optical mode group of the present invention;
The structure of the long-pending optical mode group among Fig. 6 (B) presentation graphs 6 (A) is formed;
The sectional view of the long-pending optical mode group of Fig. 6 (C) presentation graphs 6 (A).
Embodiment
See also Fig. 3, its expression is according to the synoptic diagram of a light source module of a preferred embodiment of the present invention.This light source module 300 comprises first and second light source 31,32, first and second catoptron 33,34 and a light accumulation device 35.As shown in FIG., above-mentioned every member is individually fixed in the lamp box structure 30; Wherein, this first and second catoptron 33,34 is arranged in the opposite face of these first and second light source 31,32 openings respectively with an angle of inclination, so that first and second light a, b that this first and second light source 31,32 is produced are directly incident on this light accumulation device 35 through after these first and second catoptron 33,34 primary events.In addition, in these first and second light source 31,32 outlet outsides, a ultraviolet light filter 36,37 also can be set, respectively so that this first and second light a, b inject before this first and second catoptron 33,34 ultraviolet light that first filtering is possible.
As shown in FIG., above-mentioned first and second catoptron 33,34 sees through a plurality of screws 38 and is fixed on this lamp box 30.These a plurality of screws 38 are except in order to fix this first and second catoptron 33,34, this first and second light a, b also can be used to adjust the angle of inclination of this first and second catoptron 33,34, so that can project on this light accumulation device 35 with angle accurately.
On the other hand, with known art, this light accumulation device 35 has first and second prism columns 351,352 and a light accumulation column 353 equally, however this first and second prism columns 351,352 structurally need cooperate this first and second light source 31,32 arrangement angle and with give variation.See also shown in Figure 4ly, it represents the synoptic diagram of the detailed structure of this first prism columns 351.This first prism columns 351 has an incidence surface 3511 and a reflecting surface 3512 for this first light a of incident, and this incidence surface 3511 and 3512 formation of this reflecting surface, one angle theta.In the present embodiment, because therefore this first light a this incidence surface 3511 of direct projection no longer, can produce deviation because of refraction effect after this first prism columns 351 of this first light a incident.Therefore, if will keep the light source utilization rate of the first light a in this first prism columns 351 of incident, this angle theta must be made correction along with the angle of deviation.As shown in FIG., in the present embodiment, when this 31,32 of first and second light source has an angle A, see through the adjustment of this first catoptron 33, can make this first light a with this first prism columns 351 of same angle A incident, just can calculate the refraction angle B of this first light a by the refractive index n value of this first prism columns 351 this moment, and draw after this refraction angle B just the angle that can correspondence obtain the required adjustment of this angle theta.Comprehensive the above because this angle theta be the function of this refraction angle B, this refraction angle B then be the function of this angle A and this refractive index n, thus this angle theta be direct be that this angle A and this refractive index n are relevant.In more detail, this angle theta can be defined by following equation after calculating through geometric relationship:
θ＝(90+sin
-1((sinA)/n))/2(1)
In like manner as can be known, same formula also can be used for defining the angle design on this second prism columns 352.
Please continue to consult Fig. 5 (A) with shown in Fig. 5 (B), it further specifies two kinds of possible arrangement modes of this light accumulation device 35.As previously mentioned, in previous embodiment of the present invention, this first and second light source 31,32 is arranged side by side with an included angle A, thereby first and second prism columns 351,352 that is cooperated is also for being arranged side by side (shown in Fig. 5 (A)).Yet, in some optical projection system (some DLP ray machine framework for example, incident light enters the situation of panel from 45 degree directions of panel, and the light of light accumulation column outgoing is gone through twice 45 degree reflections, is imaged onto panel so the light of this exiting surface revolves to turn 90 degrees.) major axis (as the PQ line segment among the figure) of light accumulation column exiting surface, not in the horizontal direction, and in vertical direction, and make described first and second prism columns 351,352 also can be designed to stacked framework (shown in Fig. 5 (B)) mutually.But, in this embodiment, other optical elements that cooperated only need corresponding change configuration to get final product, and need not have any new element to add.On the other hand, no matter be as Fig. 5 (A) be arranged side by side framework or as the stacked framework of Fig. 5 (B), this light accumulation device 35 is in order to prevent light loss and reduce light utilization in transmittance process, the exiting surface of this first and second prism columns 351,352 must closely engage with the incidence surface of this light accumulation column 353, therefore, the area of these light accumulation column 353 incidence surfaces can meet the area sum total of this first and second prism columns exiting surface fully.
See also shown in Fig. 6 (A)-(C), its explanation is the upright relation of group of a long-pending optical mode group according to another embodiment of the present invention.At first, Fig. 6 (A) represents that this constitutes the structural relation figure that one of this long-pending optical mode group 60 is amassed a light microscopic group 610 and a metal bracket 620.As we know from the figure, this long-pending light microscopic group 610 is mainly carried with fixing by a plurality of member 621-625 of this metal bracket 620; Wherein the structure of this long-pending light microscopic group 610 can further be consulted the graphic of Fig. 6 (B) and be described in detail.As shown in FIG., in the present embodiment, this long-pending light microscopic group 610 comprises first prism columns 611, second prism columns 612 and a light accumulation column 613, and wherein this first prism columns 611 has first incidence surface 6111 and first reflecting surface 6112 and first exiting surface 6113; These rib two prism columns 612 also have corresponding second incidence surface 6121 and second reflecting surface 6122 and first exiting surface 6123; This light accumulation column 613 then has the 3rd incidence surface 6131 and the 3rd exiting surface 6132.From Fig. 6 (B) as can be seen, this first and second prism columns 611 is parallel side by side along long axis direction (as the direction of ST line segment among the figure) each other with 612, and this light accumulation column 613 then is next to after this first and second prism columns 611,612.In order to prevent that light from producing loss in these long-pending light microscopic group 610 transmittance processs, this first and second exiting surface 6113,6123 directly engages with the 3rd incidence surface 6131.And a plurality of member 621-625 of aforementioned this metal bracket 620 promptly design each the lens 611-613 that calibrates in this long-pending light microscopic group 610.
From Fig. 6 (A) as can be known, this metal bracket 620 comprises a pedestal 621, first bogie side frame 622, second bogie side frame 623, a gland 624 and a baffle plate 625, wherein the long side surface of this first and second prism columns 611,612 (side shown in the figure bend) is fixed with this first bogie side frame 622 by this pedestal 621, the long side surface of this light accumulation column 613 then fix by this pedestal 621 and this second bogie side frame 623, wherein in this first and second bogie side frame system through a fixed screw 628 (shown in Fig. 6 (C)) and fix with this pedestal 621.And for this first and second exiting surface 6113,6123 is closely engaged with the 3rd incidence surface 6131, front/rear end that should long-pending light microscopic group 610 (end face that contacts with this plate washer 625 with this gland 624 respectively) withstands by this gland 624 and this baffle plate 625, gets loose with the composition surface that prevents this long-pending light microscopic group 610.On the other hand, owing to should long-pending light microscopic group 610 making the light transmission by total reflection, thereby in order to keep the reflectivity on these long-pending light microscopic group 610 surfaces, this pedestal 621 and this first and second bogie side frame 622,623 see through groove structure 626 with this long-pending light microscopic group 610 and contact with this long-pending light microscopic group 610.Therefore, from the sectional view of Fig. 6 (C), can know and find out that this long-pending light microscopic group 610 only can contact with these metal bracket 620 support levels on the cross section, therefore, the reflectivity of this long-pending light microscopic group 610 can be because of contacting with this carriage 620 and changing.
Therefore, the light accumulation device that is provided in the foregoing description is provided, not only should long-pending light microscopic assembly close lamp source arrangement position and design, and more can be under the situation that does not increase other complicated elements, easy and promptly finish the fixing and location of light accumulation device in the light source module.
The above, only in order to preferred embodiment of the present invention to be described, yet scope of the present invention ought not be subject to this above-mentioned every embodiment; And the present invention must appoint and executes that the craftsman thinks and be to modify as all by being familiar with present technique field person, does not so take off as protection domain that attached application range is desired.
Claims (9)
1. the light source module of an optical projection system comprises:
First and second light source is in order to produce first and second light;
First and second catoptron lays respectively on the light path of this first and second light, with control this first with the direction of transfer of this second light; And
One light accumulation device has first prism columns, second prism columns and a light accumulation column, and this light accumulation device is configured on light path after this first and second catoptron,
Wherein, this first and second light receives via this first and second prism columns prism respectively, and be pooled to this light accumulation column to carry out homogenizing by total reflection, this first and second prism columns is tool one incidence surface and a reflecting surface respectively, and this incidence surface and this reflecting surface form an angle theta, and this angle theta satisfies following formula: θ=1/2[90 °+sin
-1(sin (A)/n)], wherein A is the incident angle of this incidence surface of incident of light, n is the refractive index of prism columns.
2. light source module as claimed in claim 1 is characterized in that, an incidence surface of this light accumulation column engages with the exiting surface of this first and second prism columns respectively, to compile and this first and second light of homogenizing.
3. light source module as claimed in claim 1 is characterized in that this light accumulation device also comprises a metal bracket, to fix this first prism columns, this second prism columns and this light accumulation column, wherein:
The a plurality of grooves of this metal bracket tool are so that this first prism columns, this second prism columns and this light accumulation column contact with this metal bracket support level on an xsect;
This metal bracket also comprises a pedestal, first bogie side frame, second bogie side frame, a gland and a baffle plate;
At least one long side surface of this first and second prism columns is fixed between this pedestal and this first bogie side frame;
At least one long side surface of this light accumulation column is fixed between this pedestal and this second bogie side frame; And/or
Rear end face is fixed via this gland and this baffle plate respectively before this first and second prism columns and this light accumulation column.
4. light source module as claimed in claim 1 is characterized in that, also comprises two ultraviolet light filters, is separately positioned between this first and second light source and this first and second catoptron.
5. the long-pending optical mode group of an optical projection system, it comprises:
First prism columns, it has first incidence surface, first exiting surface and first reflecting surface;
Second prism columns, it has second incidence surface, second exiting surface and second reflecting surface, and wherein, this second prism columns is arranged in parallel along the long axis direction of this first prism columns;
One light accumulation column, it has the 3rd incidence surface and the 3rd exiting surface, and wherein this first and second exiting surface engages with the 3rd incidence surface respectively; And
One metal bracket, in order to carrying and calibrate this first prism columns, second prism columns and this light accumulation column, and this metal bracket has a plurality of grooves, so that this contacts with this metal bracket support level respectively on an xsect prism columns and this light accumulation column;
Wherein, form an angle theta respectively between this first incidence surface and this first reflecting surface and between this second incidence surface and this second reflecting surface, and this angle theta satisfies following formula: θ=1/2[90 °+sin
-1(sin (A)/n)], wherein A is the incident angle that light is incident to this first or second incidence surface, n is the refractive index of prism columns.
6. the light source module of an optical projection system, it comprises:
One lamp box, it has at least one pair of lamp source and at least one pair of catoptron, in order to launch first and second light;
One light accumulation device, it comprises an a pair of prism columns and a light accumulation column, in order to transmission and this first and second light of homogenizing, and
One metal bracket is in order to carry and to calibrate this to prism columns and this light accumulation column, to reduce the loss of this first and second light transmission and homogenization process;
Wherein this a pair of exiting surface to prism columns is engaged in an incidence surface of this light accumulation column fully, so that this first and second light is delivered to this light accumulation column via total reflection, and accumulate homogenizing light source output, and this lays respectively on the light path of this first and second light to catoptron, with control this first with the direction of transfer of this second light and adjust this first with this this position of second light incident to prism columns, this is to prism columns difference tool one incidence surface and a reflecting surface, and this incidence surface and this reflecting surface form an angle theta, and this angle theta satisfies following formula: θ=1/2[90 °+sin
-1(sin (A)/n)], wherein A is the incident angle that light is incident to this incidence surface, n is to be the refractive index of prism columns.
7. light source module as claimed in claim 6 is characterized in that,
This first and second light respectively after primary event incident this to prism columns.
8. light source module as claimed in claim 6 is characterized in that,
This is to light source and this is to also comprising a pair of ultraviolet light filter between the catoptron; And/or
The a plurality of grooves of this metal bracket tool are so that this contacts with this metal bracket support level respectively on an xsect prism columns and this light accumulation column.
9. light source module as claimed in claim 6 is characterized in that, this metal bracket also comprises a pedestal, first bogie side frame, second bogie side frame, a gland and a baffle plate, wherein:
This at least one long side surface to prism columns is fixed between this pedestal and this first bogie side frame;
At least one long side surface of this light accumulation column is fixed between this pedestal and this second bogie side frame; And/or
This front/rear end to prism columns and this light accumulation column is fixed via this gland and this baffle plate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100818656A CN100412612C (en) | 2005-07-01 | 2005-07-01 | Double-lamp frame for L-shape optical machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100818656A CN100412612C (en) | 2005-07-01 | 2005-07-01 | Double-lamp frame for L-shape optical machine |
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| Publication Number | Publication Date |
|---|---|
| CN1892286A CN1892286A (en) | 2007-01-10 |
| CN100412612C true CN100412612C (en) | 2008-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100818656A Expired - Fee Related CN100412612C (en) | 2005-07-01 | 2005-07-01 | Double-lamp frame for L-shape optical machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021670C (en) * | 1988-05-26 | 1993-07-21 | 菲利浦光灯制造公司 | Illumination system |
| CN1398361A (en) * | 2000-10-06 | 2003-02-19 | 松下电器产业株式会社 | Illumination optical unit and proejction display comprising it |
| CN1530684A (en) * | 2003-01-07 | 2004-09-22 | ��ʿд������ʽ���� | Retainer of bar integrator and projective image displaying device |
| JP2005062483A (en) * | 2003-08-12 | 2005-03-10 | Nec Viewtechnology Ltd | Rod integrator holding mechanism and projection display device |
| US20050083685A1 (en) * | 2003-10-13 | 2005-04-21 | Hsin-Tsung Yeh | Illumination structure with multiple light sources and light integration device in a projection system |
| CN1627123A (en) * | 2003-12-12 | 2005-06-15 | 台达电子工业股份有限公司 | High efficiency dual bulbs illumination system |
-
2005
- 2005-07-01 CN CNB2005100818656A patent/CN100412612C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1021670C (en) * | 1988-05-26 | 1993-07-21 | 菲利浦光灯制造公司 | Illumination system |
| CN1398361A (en) * | 2000-10-06 | 2003-02-19 | 松下电器产业株式会社 | Illumination optical unit and proejction display comprising it |
| CN1530684A (en) * | 2003-01-07 | 2004-09-22 | ��ʿд������ʽ���� | Retainer of bar integrator and projective image displaying device |
| JP2005062483A (en) * | 2003-08-12 | 2005-03-10 | Nec Viewtechnology Ltd | Rod integrator holding mechanism and projection display device |
| US20050083685A1 (en) * | 2003-10-13 | 2005-04-21 | Hsin-Tsung Yeh | Illumination structure with multiple light sources and light integration device in a projection system |
| CN1627123A (en) * | 2003-12-12 | 2005-06-15 | 台达电子工业股份有限公司 | High efficiency dual bulbs illumination system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1892286A (en) | 2007-01-10 |
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