CN100485454C - Liquid crystal projecting system - Google Patents
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- CN100485454C CN100485454C CNB2006101110199A CN200610111019A CN100485454C CN 100485454 C CN100485454 C CN 100485454C CN B2006101110199 A CNB2006101110199 A CN B2006101110199A CN 200610111019 A CN200610111019 A CN 200610111019A CN 100485454 C CN100485454 C CN 100485454C
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Abstract
An LCD projector system includes a light source, a polarization component, a dichroic mirror, a first and a second reflecting mirror, a first and a second polarization light component, a half wave plate, a dichroic component, an image regulating module and a projection lens. The dichroic mirror separates the polarized light source through the polarization component into a single primary color light and a double primary color light which are respectively output to the first and second reflecting mirrors. The single primary color light changes the polarization direction through the first reflecting mirror and then the half wave plate and is output to the first polarization component. The double primary color light is reflected through the second reflecting mirror and then output to the second polarization component. The double primary color light after polarization is sent to the dichroic component, so as to be separated. The image regulating module is arranged on one side of the first polarization component and the dichroic component for polar regulation of the primary light. The projection lens is arranged on one side of the second polarization component.
Description
Technical field
The present invention relates to a kind of LCD projecting system, particularly about a kind of LCD projecting system of utilizing three reflection liquid crystals to do image projecting output.
Background technology
Traditional CRT monitor is subject to the restriction of volume size and cost consideration, difficult to accomplish large-sized display effect, and it is compact to utilize the crystal projection technology that the outward appearance volume is realized, and the Projection Display effect is at all no less than traditional CRT monitor.
The liquid crystal projector inside structure can be divided into two kinds of one chip and three-chip types according to the liquid crystal board of inside.Projector's resolution of one chip is low, and brightness is also low, but price is more cheap, and the projector of three-chip type then has the advantage of high resolving power, high brightness, but price is more expensive.The principle of work of three-chip type projector is: will be decomposed into red (R), green (G), blue (B) three primary colors from the white light of light source, make this primaries enter redness, green and blue LCD panel respectively, will reconfigure and project on the screen from this primaries of each LCD panel reflection then via a projecting lens.
Fig. 1 is a United States Patent (USP) the 6th, 454, the configuration diagram of a kind of existing three-chip type LCD projecting system of No. 416 announcements.This LCD projecting system comprises the first primitive color light B of reflection from light source 10
SAnd transmission second and primaries R
S, G
SDichronic mirror 11; Transmission is from the second primitive color light R of dichronic mirror 11
SAnd its polar biased direction half-twist become R
PLight, and direct transmission primaries G
SSelect colour cast tabula rasa 12; The second primitive color light R of free colour cast tabula rasa 12 in the future
PWith primaries G
STransmission is sent to first LCD panel 13 and the first polar biased light colour splitting prism 15 (PBS, Polarization Beam Splitter) that reflexes to second LCD panel 14 respectively; Will be from the first primitive color light B of dichronic mirror 11
SReflex to the second polar biased light colour splitting prism 17 of the 3rd LCD panel 16; And combination is by the dichroic prism 18 of the primaries of LCD panel 13,14,16 reflections.Between a PBS 15 and dichroic prism 18, be provided with one and select colour cast tabula rasa 19, and be provided with a wave plate or glass sheet 20 between the 2nd PBS 17 and the dichroic prism 18.This selects colour cast tabula rasa 19 and wave plate or glass sheet 20 to be used for polar biased direction half-twist with the corresponding primitive color light of incident, and therefore, the polarity of the primaries of last incident dichroic prism 18 is respectively G
P, R
P, B
SSelect colour cast tabula rasa 12, a PBS 15, select colour cast tabula rasa 19, dichroic prism 18, wave plate or glass sheet 20 and the 2nd PBS 17 to be bonded together, to reduce the reflection in the light path.
Yet said system needs the extra optical module that increases between two polar biased light colour splitting prism PBS 15,17 and a dichroic prism 18, promptly selects colour cast tabula rasa 19 and wave plate/glass sheet 20, to reach the effect of polarisation and beam split.Can reduce each prism 15,17,18 fiduciary level when bonding like this, yield reduces and the production cost raising thereby cause producing.As everyone knows, in LCD projecting system, each prism must have suitable fiduciary level that each is overlapped exactly at the formed image of LCD panel, and the adhering technique of prism is a part the most difficult on making, therefore, no matter any error in the prism assembling is from the assembling mode or the fiduciary level of indivedual prisms, all will make and finally influence image quality by total system generation flaw.
In addition, increasing also of this system's adhesive interface can cause decrease of contrast, finally influences image quality.This is because in working order, prism can cause temperature rise to the absorption of light, thereby produces stress near adhesive interface, and causes decrease of contrast.
Fig. 2 is a United States Patent (USP) the 7th, 002, the configuration diagram of the another kind of existing three-chip type LCD projecting system of No. 752 announcements.This LCD projecting system comprises three PBS 21,22,23.Be provided with between each PBS and select colour cast tabula rasa or wave plate 24,25, therefore also can reduce each PBS 21,22,23 fiduciary level when bonding, and reduce the contrast of projection image in order to change the polarity of incident primitive color light.In addition, each is provided with a plurality of Polarizers 26,27 in addition PBS 21 and 23 1 sides, and the number of system component is increased, and also makes the assembling of system complicated, and cost is increased.
Fig. 3 is a United States Patent (USP) the 6th, 819, the configuration diagram of another existing three-chip type LCD projecting system of No. 497 announcements.This LCD projecting system has comprised 4 PBS 31,32,33,34 altogether, will increase the number of system component like this, and makes the volume of total system framework become big and the cost increase.Therefore PBS 32,33,34 is bonded into one mutually, wherein, is provided with a glass sheet 35 between the PBS 32 and 34, also is provided with one between the PBS 33 and 34 and selects colour cast tabula rasa 38, also can reduce PBS 32,33,34 fiduciary level when bonding.
In addition, in this system, from the primaries R of light source 36 ejaculations
S, G
S, B
SAfter selecting colour cast tabula rasa 37, be converted to R
S, G
P, B
SIncident the one PBS 31.This primaries R
S, G
P, B
SIn two primitive color light R
SAnd B
SBecome R through a PBS 31 reflections and after selecting 30 conversions of colour cast tabula rasa
PAnd B
SIncident the 3rd PBS 33, and single original colored light G
PPenetrate a PBS 31 and be incident to the 2nd PBS 32.R
PLight penetrates the 3rd PBS 33 and is incident to reflection liquid crystal 39R, becomes R behind modulation
SLight returns the 3rd PBS 33, reflexes to through the 3rd PBS 33 and selects colour cast tabula rasa 38 to convert R to
PLight incident the 4th PBS 34; B
SLight reflexes to reflection liquid crystal 39B through the 3rd PBS 33, becomes B behind modulation
PLight returns and penetrates the 3rd PBS 33 and incident the 4th PBS 34; And G
PLight incident and penetrate the 2nd PBS32 after incidence reflection formula liquid crystal board 39G, behind modulation, become G
SLight is incident to the 4th PBS 34 after reflecting by the 2nd PBS 32.Therefore, the primitive color light of second, third and the 4th PBS 32,33,34 of incident is respectively G
PR
P, B
SAnd R
P, B
P, G
SAnd the effective rate of utilization of known S polar biased light in PBS is 99%, but P polar biased light then has only 90% utilization factor, all the other 10% have interference and produce the form and aspect off-set phenomenon, therefore this system is many enters second, third and the 4th PBS 32,33,34 can reduce the service efficiency of primitive color lights with P polar biased light, and causes the generation of photochromic skew problem.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, fundamental purpose of the present invention is to provide a kind of LCD projecting system, and its assembly, especially its beam split combined optical module have the deploying mode of innovation, to solve the problem that prior art exists.
Another purpose of the present invention is to provide a kind of production facility, easy, the lower-cost LCD projecting system of assembling.
For achieving the above object, LCD projecting system of the present invention comprises that one penetrates the light source of white light, this white light source of polarization is arranged on half-wave plate, a color separation assembly, an image modulation module and the projection output beam of the first polar biased optical assembly input side with polarization assembly, a dichronic mirror, first and second catoptrons, the first and second polar biased optical assemblies, that produce a polarization light source a projection lens.This polarization light source is separated into a single original colored light with this dichronic mirror and a pair of primitive color light exports this first and second catoptron respectively to.This single original colored light is through first mirror reflects and export this first polar biased optical assembly to carry out the polar biased beam split after this half-wave plate changes polarised direction.This pair primitive color light exports this second polar biased optical assembly to and carries out the polar biased beam split after second mirror reflects.Two primitive color lights after the polar biased beam split are sent to the color separation assembly, to separate this pair primitive color light.This image modulation module is arranged on a side of this first polar biased optical assembly and this color separation assembly, is used for receiving respectively this pair primitive color light and this single original colored light, respectively this pair primitive color light is become the coloured light reflection output of another polarity again with this single original colored light modulation.One projection lens is arranged on a side of this first polar biased optical assembly, and in order to receiving two primitive color lights and the single original colored light behind this modulation, and projecting beam is to screen display.
Wherein, this first, second polar biased optical assembly and this color separation assembly are bonded into one " L " shape prism module, and other optical module is not set therebetween.Isolated pair of primitive color light of this dichronic mirror is all with S polar biased light form incident second polar biased optical assembly and color separation assembly.
Therefore, compare with prior art, LCD projecting system provided by the invention has the assembly deploying mode of innovation, only needs two polar biased optical assemblies and a color separation assembly, just can realize the effect of direct polarisation and beam split, be bonded in therebetween and need not additionally increase optical module.Like this, can improve the mutual fiduciary level when bonding of polar biased optical assembly and color separation assembly, and improve the contrast of projection image.In addition, in the present invention, ruddiness R and blue light B all enter the second polar biased optical assembly and color separation assembly in S polar biased light mode, therefore can improve the primitive color light service efficiency, effectively reduce the photochromic problem that departs from mutually.In addition, one " L " shape prism module that the present invention utilizes two polar biased optical assemblies and a color separation assembly to form, just can realize the effect of direct polarisation and beam split, other optical module is therebetween not bonding between the prism, and be somebody's turn to do " L " shape prism module except that forming by 6 traditional isosceles right-angle prisms, also can form, so LCD projecting system of the present invention also has and produces convenient, easy, the lower-cost advantage of assembling by 5 even 4 isosceles right-angle prisms.
The present invention is further illustrated below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the configuration diagram of an existing LCD projecting system.
Fig. 2 is the configuration diagram of existing another LCD projecting system.
Fig. 3 is the configuration diagram of existing another LCD projecting system.
Fig. 4 is the configuration diagram of LCD projecting system of the present invention.
Fig. 5 is the configuration diagram of LCD projecting system first embodiment of the present invention.
Fig. 6 is the configuration diagram of LCD projecting system second embodiment of the present invention.
Fig. 7 is the configuration diagram of LCD projecting system the 3rd embodiment of the present invention.
Embodiment
About detailed description of the present invention and technology contents, existing as follows with regard to accompanying drawings:
Please refer to Fig. 4, be the configuration diagram of LCD projecting system 70 of the present invention, this framework is made up of a light source module, a beam split combined optical module, an image modulation module and a projection lens.This light source module comprises that one penetrates the light source 50 of white light and white light is made the polarization assembly 51 that polarization is handled; First, second catoptron 53,54 that this beam split combined optical module comprises dichronic mirror 52 that separating light beam is provided, provide beam reflection (in other embodiments, these catoptrons can be with other reflection subassembly, for example prism replaces), change the half-wave plate 55 (λ/2 wave plates of incident light polar biased direction, λ=632.8nm), provide the first polar biased optical assembly 56 and the second polar biased optical assembly 57 of polar biased beam split and the color separation assembly 58 that color separation processing is provided; This image modulation module is used for the polar biased light modulation of input is become to contain another polarity polar biased light of image signal and reflects output, comprises reflection liquid crystal 60G, 60B, 60R; These projection lens 59 projecting beams to screen (not shown) in order to display image.Wherein, the polarization assembly 51 of light source module is located on the output light path path of light source 50, is used for non-polarization light source with white and converts the have three primary colors one polar biased light source W of (R, G, B) to
S(S is vertical polar biased light).This polarization assembly 51 and this light source 50 common formation one polarization light sources.In addition, the beam split combined optical module of LCD projecting system 70 of the present invention further comprises first and second collector lenses 61,62, with so that light path is kept convergence state, allows the parallel transmission of luminous energy.
In the above-mentioned explanation, the dichronic mirror 52 of beam split combined optical module and second catoptron 54 are located on the outbound course of polarization assembly 51, wherein this dichronic mirror 52 three primary colors polar biased light W that assembly 51 is exported that will polarize
SIsolate the twice light beam, the single primary colors polar biased light G of one for exporting by first catoptron, 53 reflections of being located at dichronic mirror 52 tops
S, another two primary colors polar biased light R for exporting by second catoptron, 54 reflections of being located at dichronic mirror 52 left sides
S, B
S
This first polar biased optical assembly 56, the second polar biased optical assembly 57 and color separation assembly 58 are bonded into one and L-shaped framework.This first polar biased optical assembly 56 is made the polar biased beam split that penetrates or reflect at the polar biased state (the P utmost point or the S utmost point) of single primary colors polar biased light.This second polar biased optical assembly 57 is located at the first polar biased optical assembly, 56 belows and contiguous projection lens 59, and the polar biased state (the P utmost point or the S utmost point) that is used at two primary colors polar biased light is made the polar biased beam split that penetrates or reflect.This color separation assembly 58 is located at a side of the second polar biased optical assembly 57, is used for the one primary colors polar biased light reflection with two primary colors polar biased light, and another primary colors polar biased light then penetrates.The polar biased light Amici prism PBS that this first polar biased optical assembly 56 is bonded for traditional base by two isosceles right-angle prisms 561,562, the polar biased light Amici prism PBS that this second polar biased optical assembly 57 also is bonded for traditional base by two isosceles right-angle prisms 571,572.This color separation assembly 58 is dichroic prism (Dichroic Prism) that a traditional base by two isosceles right-angle prisms 581,582 is bonded.
Image modulation module comprises the first reflection liquid crystal 60G, the second reflection liquid crystal 60B and three-mirror reflective liquid crystal board 60R, wherein the first reflection liquid crystal 60G is located at the first polar biased optical assembly, 56 1 sides, and the second reflection liquid crystal 60B and three-mirror reflective liquid crystal board 60R are located at the both sides of color separation assembly 58 respectively.The projection lens 59 of imaging modules is located at the second polar biased optical assembly, 57 1 sides, in order to being projected to screen display through the polar biased light that image modulation module modulation is crossed.
In addition, this half-wave plate 55 is located at a side of the first polar biased optical assembly 56, is used for changing the polarity (the P utmost point or the S utmost point) of incident beam.This first collector lens 61 is located between first catoptron 53 and the half-wave plate 55, and second collector lens 62 is located between second catoptron 54 and the second polar biased optical assembly 57, with so that incident beam is kept convergence state, improves light utilization efficiency.
Fig. 5～7 are the specific embodiment of LCD projecting system of the present invention.
Fig. 5 is the configuration diagram of LCD projecting system first embodiment 71 of the present invention.In the present embodiment, the polar biased light of polarization assembly 51 outputs is W
SVia dichronic mirror 52 with W
SGreen glow G in the three primary colors polar biased light
SReflection exports first catoptron 53, red blue light R to
S, B
SThen penetrate and export second catoptron 54 to.Green glow G
SExport first collector lens 61 to through 53 reflections of first catoptron, changing polarity by half-wave plate 55 after converging is green glow G
P, inject the first polar biased optical assembly 56.This first polar biased optical assembly 56 is PBS, penetrates at the P light in the polar biased light, and the reflection of S light, so green glow G
PCan penetrate via this first polar biased optical assembly 56 and export the first reflection liquid crystal 60G to.Green glow G
PConvert another polarity to and have the green glow G of image signal by the first reflection liquid crystal 60G modulation
S, turning back exports the first polar biased optical assembly 56 to, and reflection enters the second polar biased optical assembly 57 again.In addition, the red blue light R of dichronic mirror 52 outputs
S, B
SThe input second polar biased optical assembly 57 after the converging of the reflection of second catoptron 54 and second collector lens 62.This second polar biased optical assembly 57 also is a PBS, penetrates at the P light in the polar biased light, and the reflection of S light, therefore red blue light R
S, B
SBe reflected and export color separation assembly 58 to.Color separation assembly 58 is dichroic prism, is primarily aimed at blu-ray reflection, and ruddiness penetrates, therefore red blue light R
S, B
SIn blue light B
SCan reflex to the second reflection liquid crystal 60B, and ruddiness R
SThen penetrate into three-mirror reflective liquid crystal board 60R, thereby make blue light B
SConvert another polarity to and have the blue light B of image signal by the second reflection liquid crystal 60B modulation
PReflection exports color separation assembly 58 to, and ruddiness R
SConvert another polarity to and have the ruddiness R of image signal by three-mirror reflective liquid crystal board 60R modulation
PReflection exports color separation assembly 58 to.Again by color separation assembly 58 with red blue light B
P, R
PReflect respectively, penetrate and export the second polar biased optical assembly 57 to, so that the second polar biased optical assembly 57 is with the red blue light B of color separation assembly 58 outputs
P, R
PPenetrate and export projection lens 59 to, and with the green glow G of the first polar biased optical assembly 56 output
SReflection exports projection lens 59 in the lump.At last, projection lens 59 outputs comprise the three primary colors light beam of image signal, are projected to screen with the show image picture.
The difference of the foregoing description and Fig. 4 basic framework is, " L " shape prism group among Fig. 4 is bonded by 6 measure-alike isosceles right-angle prisms altogether, " L " shape prism group in the present embodiment then is bonded by 5 isosceles right-angle prisms, wherein 2 isosceles right-angle prisms 562,572 among Fig. 4 are substituted by the suitable big isosceles right-angle prism 567 of a size in the present embodiment, can save the cost of prism processing and assembling like this.
Cooperate Fig. 5, please refer to Fig. 6, Fig. 6 is the configuration diagram of LCD projecting system second embodiment 72 of the present invention.The difference of this embodiment and first embodiment shown in Figure 5 is that its " L " shape prism group is further reduced to by 4 isosceles right-angle prisms by 5 isosceles right-angle prisms shown in Figure 5 and is bonded, thereby has further reduced the cost of prism processing and assembling.Wherein, 2 isosceles right-angle prisms 571,581 among Fig. 5 are substituted by the suitable big isosceles right-angle prism 578 of a size in the present embodiment.
Cooperate Fig. 5, please refer to Fig. 7, Fig. 7 is the configuration diagram of LCD projecting system the 3rd embodiment 73 of the present invention.The difference of this embodiment and first embodiment shown in Figure 5 is that its color separation assembly is the less dichroic prism 58 ' of a size, can make the framework of LCD projecting system of this embodiment more compact like this.
In sum, LCD projecting system of the present invention only needs two PBS 56,57 and a dichroic prism 58,58 ', just can realize the effect of direct polarisation and beam split, and need not additionally increase optical module between each prism, thereby can improve the mutual fiduciary level when bonding of each prism, and improve the contrast of projection image.In addition, in the present invention, ruddiness R and blue light B all enter PBS 57 and dichroic prism 58,58 ' in S polar biased light mode, because of S polar biased light can effectively utilize 99% at PBS, but P polar biased light then has only 90% utilization factor, all the other 10% have interference and produce the form and aspect off-set phenomenon, and therefore entering PBS with Rs and Bs polar biased mode can improve the primitive color light service efficiency, effectively reduces the photochromic problem that departs from mutually.In addition, one " L " shape prism module of the present invention by forming by two PBS 56,57 and a dichroic prism 58,58 ', just can realize the effect of direct polarisation and beam split, other optical module is therebetween not bonding between the prism, and be somebody's turn to do " L " shape prism module except that forming by traditional 6 measure-alike isosceles right-angle prisms, also can form, so LCD projecting system of the present invention also has and produces convenient, easy, the lower-cost advantage of assembling by 5 even 4 isosceles right-angle prisms.
Above introduce, it only is preferred embodiment of the present invention, can not limit scope of the invention process with this, promptly the variation of the equalization done according to the present invention of the those skilled in the art in the present technique field is for example made up each device among the above embodiment.Improvement to know with those skilled in that art all should still belong to the scope that patent of the present invention contains.
Claims (15)
1, a kind of LCD projecting system comprises a light source module, a beam split combined optical module, an image modulation module and a projection lens, and this light source module provides white first a polarization light beam to this beam split combined optical module; This beam split combined optical module should carry out exporting image modulation module to after the light-splitting processing by white polarization light beam; This image modulation module exports the beam split combined optical module to after the polar biased light modulation of input being become to contain another polar biased light of image signal again; This beam split combined optical module will contain another polar biased light combination of image signal after by this projection lens output; It is characterized in that:
This beam split combined optical module comprises a dichronic mirror, one first reflecting surface, one second reflecting surface, half of wave plate, one first polar biased optical assembly, one second polar biased optical assembly and a color separation assembly; This dichronic mirror will become a multiband first polar biased light and one first wave band, the first polar biased light from the white first polarization beam separation of light source module; This first reflecting surface is arranged on an outgoing side of this dichronic mirror, and this first wave band, first polar biased photoconduction is caused this half-wave plate; After this half-wave plate converted this first wave band, first polar biased light to the first wave band second polar biased light, this first wave band, second polar biased light was by the first polar biased optical assembly; This second reflecting surface is arranged on another outgoing side of this dichronic mirror, this multiband first polar biased photoconduction is caused this second polar biased optical assembly, this multiband first polar biased light is via this this color separation assembly of second polar biased optical assembly reflection back incident, and this color separation assembly is separated into one second wave band, first polar biased light and a triband first polar biased light with this multiband first polar biased light; Wherein the isolated multiband first polar biased light of this dichronic mirror is all with the form incident second polar biased optical assembly and the color separation assembly of S polar biased light, and this first reflecting surface and this second reflecting surface are made of first catoptron and second catoptron respectively;
This image modulation module is separately positioned on the sidepiece of this first polar biased optical assembly and this color separation assembly, to export first wave band, first polar biased light to the first polar biased optical assembly behind this first wave band, second polar biased light modulation, will export second wave band, second polar biased light to the second polar biased optical assembly behind this second wave band, first polar biased light modulation and will export triband second polar biased light to the second polar biased optical assembly behind this triband first polar biased light modulation respectively, this first wave band, first polar biased light be via this first polar biased optical assembly reflection back incident, second polar biased optical assembly;
This projection lens is arranged on a side of this second polar biased optical assembly, will be projected to screen in order to show image from first wave band, the first polar biased light, second wave band, the second polar biased light and the triband second polarized light bundle of the second polar biased optical assembly.
2, LCD projecting system as claimed in claim 1 is characterized in that this first, second polar biased optical element and this recombination dichroic elements mutually combine to be integral, and other optical element is not set therebetween.
3, LCD projecting system as claimed in claim 1, it is characterized in that this beam split combined optical module further comprises one first collector lens and one second collector lens, this first collector lens is located between first catoptron and the first polar biased optical assembly, and this second collector lens is located between second catoptron and the second polar biased optical assembly.
4, LCD projecting system as claimed in claim 1 is characterized in that this half-wave plate is arranged between this first polar biased optical assembly and this first catoptron.
5, LCD projecting system as claimed in claim 1 is characterized in that this first, second polar biased optical assembly and this color separation assembly are combined into one " L " shape framework.
6, LCD projecting system as claimed in claim 1 is characterized in that this first polar biased optical assembly is a polar biased light colour splitting prism.
7, LCD projecting system as claimed in claim 6 is characterized in that this second polar biased optical assembly is a polar biased light colour splitting prism.
8, LCD projecting system as claimed in claim 7 is characterized in that this color separation assembly is a dichroic prism.
9, LCD projecting system as claimed in claim 8 is characterized in that the size of the size of this color separation assembly less than this first and second polar biased optical assembly.
10, LCD projecting system as claimed in claim 8 is characterized in that this first, second polar biased optical assembly and this color separation assembly are combined into one " L " shape framework, and this framework is bonded by 6 isosceles right-angle prisms.
11, LCD projecting system as claimed in claim 8 is characterized in that this first, second polar biased optical assembly and this color separation assembly are combined into one " L " shape framework, and this framework is bonded by 5 isosceles right-angle prisms.
12, LCD projecting system as claimed in claim 8 is characterized in that this first, second polar biased optical assembly and this color separation assembly are combined into one " L " shape framework, and this framework is bonded by 4 isosceles right-angle prisms.
13, LCD projecting system as claimed in claim 1, it is characterized in that this image modulation module comprises one first reflection liquid crystal, one second reflection liquid crystal and a three-mirror reflective liquid crystal board, this first reflection liquid crystal is arranged on this first polar biased optical assembly, one side, and this second reflection liquid crystal and this three-mirror reflective liquid crystal board then are separately positioned on the both sides of this color separation assembly.
14, LCD projecting system as claimed in claim 1 is characterized in that this light source module comprises a white light source and a polarization assembly.
15, LCD projecting system as claimed in claim 1 is characterized in that this light source module provides single S aurora source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101110199A CN100485454C (en) | 2006-08-09 | 2006-08-09 | Liquid crystal projecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101110199A CN100485454C (en) | 2006-08-09 | 2006-08-09 | Liquid crystal projecting system |
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| CN101122686A CN101122686A (en) | 2008-02-13 |
| CN100485454C true CN100485454C (en) | 2009-05-06 |
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|---|---|---|---|
| CNB2006101110199A Expired - Fee Related CN100485454C (en) | 2006-08-09 | 2006-08-09 | Liquid crystal projecting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI448731B (en) * | 2012-05-10 | 2014-08-11 | Delta Electronics Inc | Projection apparatus for providing multiple viewing angle images |
| TWI554078B (en) * | 2015-08-25 | 2016-10-11 | 佳世達科技股份有限公司 | Scanning device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6454416B2 (en) * | 2000-05-11 | 2002-09-24 | Hitachi, Ltd. | Color liquid crystal projector having an improved optical system |
| US6819497B2 (en) * | 2002-07-05 | 2004-11-16 | Victor Company Of Japan, Limited | Color separation and color synthesis optical system and reflection type projection display apparatus |
| US7002752B2 (en) * | 2001-11-30 | 2006-02-21 | Colorlink, Inc. | Three-panel color management systems and methods |
| CN1797064A (en) * | 2004-12-24 | 2006-07-05 | 示创科技股份有限公司 | Liquid crystal projection system |
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2006
- 2006-08-09 CN CNB2006101110199A patent/CN100485454C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6454416B2 (en) * | 2000-05-11 | 2002-09-24 | Hitachi, Ltd. | Color liquid crystal projector having an improved optical system |
| US7002752B2 (en) * | 2001-11-30 | 2006-02-21 | Colorlink, Inc. | Three-panel color management systems and methods |
| US6819497B2 (en) * | 2002-07-05 | 2004-11-16 | Victor Company Of Japan, Limited | Color separation and color synthesis optical system and reflection type projection display apparatus |
| CN1797064A (en) * | 2004-12-24 | 2006-07-05 | 示创科技股份有限公司 | Liquid crystal projection system |
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