CN1368654A - High-speed timely colour-separating switching module and its projection display - Google Patents
High-speed timely colour-separating switching module and its projection display Download PDFInfo
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- CN1368654A CN1368654A CN 01102444 CN01102444A CN1368654A CN 1368654 A CN1368654 A CN 1368654A CN 01102444 CN01102444 CN 01102444 CN 01102444 A CN01102444 A CN 01102444A CN 1368654 A CN1368654 A CN 1368654A
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Abstract
A projection display device includes an invented fast switching module for color separation in time sequence. The module is composed of a prism module, LCD faceplate and power supply. The prism module makes an incident beam divide into more than one beam in different wave area, and the beams go out from different prism in the prism module. The LCD faceplates of strong dielectricity make beam in different wave area reflect back to the prism module. Fast switcher of the power supply can turn on or off the LCD faceplate. Light beam of high color purity and high colour contrast in different wave areas can be output and fast switched by use of the invented module. Combining of the switching module and one piece of transmission or reflection type rapid response display unit as well as other reflector system consistute all color projection display system.
Description
The present invention relates to a kind of quick sequential color separation switching module and, refer to a kind of quick sequential color separation switching color separation module especially by its projection display equipment that constitutes, and the projection display equipment that includes quick sequential color separation switching color separation module.
The color of sequential is switched module generally can be divided into mechanical type and electronic type two big classes.The former makes the filter glass of all kinds that the incident white light switches through machinery successively and realizes that color switches.This device is except the shortcoming of mechanical motion, and system is all comparatively complicated usually, and its volume is also comparatively huge.The latter then is made up of to become with the light valve switch electronic circuit, and therefore, the purity of the answer speed of light valve, the transmittance of module, color and the contrast of light and shade just become the key of quality quality.
Existing electronic scanning light valve module as at United States Patent (USP) the 4th, 232, described in No. 948, switches polarization property with liquid crystal light valve, makes it to combine with the delayer of a multilayer tool birefringenct property to select the light wave colour gamut passed through.Its transmittance, switch speed and excitation are all undesirable.In addition,, in No. 378 United States Patent (USP)s, utilize dyestuff polarisation filter to engage the structure of quick liquid crystal light valve, still have the problem of transmittance and excitation deficiency the 5th, 347.
For this reason, delivered the Red Green Blue sequential switching module that switches the liquid crystal light valve be combined into of polarization with polarization retarder stacked structure and fast in the recent period with two-forty and saturated colourity, it is the 5th, 751, and the device that No. 380 patent disclosed has been developed to Product Marketing in generation.
As shown in Figure 1, it is the 4th, 232, No. 948 disclosed modules of United States Patent (USP).Wherein 10 and 20 be respectively the visible domain polaroid that vertical direction is placed; 1,2,3 light valve unit that are respectively red (R), green (G), blue (B), its respectively by strong dielectricity liquid crystal (FLC) panel 100,200,300 of a monolithic and preposition PRS11,13,15 and rearmounted PRS12,14,16 combine.Serial vein dashes 400 and is connected to FLC panel 100,200 and 300 for the moment, just can obtain the red, green, blue light beam of polarization successively.
As shown in Figure 2, be another correlation technique.Wherein, colour splitting prism 90-95 is mainly used to carry out actinic light, and other three FLC panels 70,72,74 are subjected to the control of time sequential pulse power supply 110, the red, green, blue color beam is switched penetrate successively.The switch speed of this module can reach 0.05msec.Because optical system interferes filter to be handled by dielectric material fully, the logical luminous energy of red, green, blue light beam is without any loss in principle, and answer speed is in full accord; Its possible shortcoming is on effective collection rate of the alignment difficulty of optical system and light beam.
When the common drawback of aforementioned two kinds of FLC panel modules is that light beam passes the FLC panel, be subjected to the restriction of contrast ratio, the problem that therefore needs at present to solve is exactly: under the situation that the FLC panel is replied fast, increase the contrast ratio of light valve module.
Fundamental purpose of the present invention is to provide a kind of quick sequential color separation to switch module and by its projection display equipment that constitutes, it can switch the signal that output has the different wave zones of high color purity and high colour contrast fast; The display element that module cooperates monolithic penetration or reflective rapid answer is switched in described color separation, with other as the tiny mirror system, constitute a full-color projection imaging system.
The objective of the invention is to realize by following technical solution:
Module is switched in a kind of quick sequential color separation, and it comprises:
More than one module, it connects one successively can make a wave zone parallel polarized light pass, and the optical filtering that other wave zone parallel polarized lights are reflected;
The polarisation spectroscope of this wave zone;
One liquid crystal panel because of extra electric field variation change folded light beam polarization;
One-off pattern group inferior module other, that can make the second selection wave zone running before another group is placed on, when changing the electric field of described each time module liquid crystal panel successively, it is successively with the parallel polarized light of different wave zones more than, penetrate with the light beam of vertical polarization successively in the direction vertical with its incident, when described incident beam is the vertical polarization light time, then it switches light beam successively and becomes the parallel polarization light beam.
Described liquid crystal panel is three strong dielectricity liquid crystal panels.
Described more than one different wave zones be the wave zone of Red Green Blue light.
Module is switched in a kind of quick sequential color separation, and it comprises:
One is used for light beam with incident is divided into the light beam of different wave zones more than and the prism module that penetrates from wherein different prisms;
Be used for the beam reflection of different wave zones more than is returned the strong dielectricity liquid crystal panel of prism module more than one, be separately positioned on the prism exit facet of light beam of different wave zones more than;
One is used for switching strong dielectricity liquid crystal panel fast opens or closes, and the power supply that the light beam of different wave zones more than is penetrated in the prism module in regular turn, and this power supply is connected respectively to more than one strong dielectricity liquid crystal panel.
Described prism module comprises six colour splitting prisms, and each prism is glued together or released state.
Described power supply is the continuous impulse power supply.
The number of above-mentioned strong dielectricity liquid crystal panel is three.
Above-mentioned different wave zone more than is the wave zone of Red Green Blue light.
Described colour splitting prism is made up by parallel-plate.
A kind of quick sequential color separation suitching type projection display equipment, it comprises:
One is divided into the light beam of different wave zones more than and the prism module that penetrates from different prisms wherein with incident beam;
Be used for the beam reflection of different wave zones more than is returned the strong dielectricity liquid crystal panel of prism module more than one, it is separately positioned on the prism exit facet of light beam of different wave zones more than;
One is used for switching strong dielectricity liquid crystal panel fast opens or closes, and the power supply that the light beam of different wave zones more than is penetrated in the prism module in regular turn, and it is connected respectively to several strong dielectricity liquid crystal panels;
One is used to throw the video picture module of the signal of video picture module, the light beam of different wave zones more than that it receives that above-mentioned quilt penetrates in regular turn.
Video picture module in this display device is the penetration liquid crystal light valve or the strong dielectricity liquid crystal panel of monolithic.
Video picture module in this display device is the reflection type liquid crystal panel or the strong dielectricity liquid crystal panel of monolithic.
Above-mentioned different wave zone more than is the wave zone of Red Green Blue light.
Prism module in this display device comprises six colour splitting prisms.
The number of the strong dielectricity liquid crystal panel in this display device is three.
Power supply in this display device is the continuous impulse power supply.
The present invention is owing to be the reflection configuration that utilizes panel in order to three FLC panels switching redness, green, blue light beam, and its contrast is much larger than using the penetration panel; Its texture ratio penetration panel is simple, and the performance of the dichronic mirror in its each prism is preferable, makes simple; Because when each FLC panel was closed, light beam can be penetrated back along former travel path of incident light, therefore must not use absorption plant.
The present invention is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the configuration diagram of the color separation module of prior art.
Fig. 2 is the configuration diagram of the color separation module of another prior art.
Fig. 3 is the configuration diagram of the color separation module of one embodiment of the invention.
Fig. 4 is one of spectrum character diagram of the color separation filter in each prism of kind mirror module of Fig. 3.
Fig. 5 be the color separation filter in each prism of kind mirror module of Fig. 3 spectrum character diagram two.
Fig. 6 be the color separation filter in each prism of kind mirror module of Fig. 3 spectrum character diagram three.
Fig. 7 be the color separation filter in each prism of kind mirror module of Fig. 3 spectrum character diagram four.
Fig. 8 be the color separation filter in each prism of kind mirror module of Fig. 3 spectrum character diagram five.
Fig. 9 be the color separation filter in each prism of kind mirror module of Fig. 3 spectrum character diagram six.
Figure 10 is the configuration diagram of the color separation module of another embodiment of the present invention.
Figure 11 is one of spectrum character diagram of the color separation filter in each prism of prism module of Figure 10.
Figure 12 be the color separation filter in each prism of prism module of Figure 10 spectrum character diagram two.
Figure 13 be the color separation filter in each prism of prism module of Figure 10 spectrum character diagram three.
Figure 14 be the color separation filter in each prism of prism module of Figure 10 spectrum character diagram four.
Figure 15 be the color separation filter in each prism of prism module of Figure 10 spectrum character diagram five.
Figure 16 be the color separation filter in each prism of prism module of Figure 10 spectrum character diagram six.
Figure 17 is the configuration diagram of a projection display equipment of color separation module formation of the present invention.
Figure 18 is the configuration diagram of another projection display equipment of color separation module formation of the present invention.
The CIE coordinate synoptic diagram of the excitation of redness, green and blue light beam that Figure 19 is obtained for color separation module of the present invention.
As shown in Figure 3, the present invention selects prism 120,122,124,126,128,130 to combine by six colors.Wherein, the spectrum of colour splitting prism 120 as shown in Figure 4; The spectrum of colour splitting prism 122 is as shown in Figure 5: the spectrum of colour splitting prism 124 as shown in Figure 6; The spectrum of colour splitting prism 126 as shown in Figure 7; The spectrum of colour splitting prism 128 as shown in Figure 8; The spectrum of color separation kind mirror 130 as shown in Figure 9.
When the incident white light of parallel polarization when the prism top is injected, the ruddiness Pr of parallel polarization passes prism 120 and 122 and inject FLC panel 140.When FLC panel 140 is opened) time, the ruddiness Pr (representing with solid line in the drawings) of parallel polarization is reflected and converts vertical polarization ruddiness Sr to, and is passed prism 126 and 130 by prism 124 reflections, and penetrates from the prism 130 of module lower left.When FLC panel 140 was closed, the polarization of parallel polarized light Pr (being represented by dotted lines in the drawings) did not change, and prism 122 and 120 are passed in reflection, and leave the prism module according to the path of Pr ' from former incident direction.
Be incident to green beam Pg in the parallel polarization white light of prism 120 and blue light beam Pb after reflection, directive prism 124.Wherein, green glow passes prism 126 after prism 124 reflections, be mapped on the FLC panel 150.When FLC panel 150 was opened, the green beam Pg (representing with solid line in the drawings) of parallel polarization converted the green beam Sg of vertical polarization to, penetrated through the bottom-right prism 130 of prism mould.When FLC panel 150 was closed, the green beam Pg (being represented by dotted lines in the drawings) of incident then kept its parallel polarization, and along Pg ' light path, passes prism 126, more successively by prism 124 and 120 reflections, and penetrated from incident light Ip direction from the prism module.
Blue light Pb in the incident white light by prism 124, passes prism 128 and directive FLC panel 160 again after prism 120 reflections.When FLC panel 160 was opened, the blue light Pb (representing with solid line in the drawings) of parallel polarization was reflected and converts the blue light Sb of vertical polarization to, again through prism 128 and 130 reflections, and penetrates from prism 130.When FLC panel 160 was closed, then blue light Pb (being represented by dotted lines in the drawings) kept original polarization, along Pb ' direction, through prism 128 and 124, again by prism 120 reflections, and penetrated along the direction of former incident light Ip.
By above optical path analysis as can be known, a fast-pulse voltage is connected on the FLC panel 140,150,160, just can be successively from the right-hand ejaculation redness of prism 130, green, blue vertical polarization light beam.
Figure 10 shows that an alternative embodiment of the invention, the structure of this color separation switching module and the embodiment of Fig. 3 are similar, but its incident beam is the white light Is of vertical polarization.Wherein, the spectrum of colour splitting prism 220 as shown in figure 11; The spectrum of colour splitting prism 222 as shown in figure 12; The spectrum of colour splitting prism 224 as shown in figure 13; The spectrum of colour splitting prism 226 as shown in figure 14; The spectrum of colour splitting prism 228 as shown in figure 15; The spectrum of colour splitting prism 230 as shown in figure 16.
As shown in figure 17, color separation of the present invention is switched module and can be combined with a penetration liquid crystal imaging module 170 and projection objective group 180, constitutes the full-color projection display equipment of a sequential; Or as shown in figure 18, combine with a reflection type liquid crystal imaging module 190 and projection objective 180, constitute the full-color projection display equipment of a sequential.
Utilize red, the green and blue light beam of full-color optical projection system of the present invention excitation the CIE coordinate as shown in figure 19.Wherein, be the colour gamut of prior art by the formed delta-shaped region of symbol [o], and the formed delta-shaped region of symbol [Δ] is the colour gamut that module is switched in color separation of the present invention.By finding out among the figure, utilize color separation module of the present invention can obtain preferable excitation.
Claims (16)
1, module is switched in a kind of quick sequential color separation, and it is characterized in that: it comprises:
More than one module, it connects one successively can make a wave zone parallel polarized light pass, and the optical filtering that other wave zone parallel polarized lights are reflected;
The polarisation spectroscope of this wave zone;
One liquid crystal panel because of extra electric field variation change folded light beam polarization;
One-off pattern group inferior module other, that can make the second selection wave zone running before another group is placed on, when changing the electric field of described each time module liquid crystal panel successively, it is successively with the parallel polarized light of different wave zones more than, penetrate with the light beam of vertical polarization successively in the direction vertical with its incident, when described incident beam is the vertical polarization light time, then it switches light beam successively and becomes the parallel polarization light beam.
2, module is switched in quick sequential color separation as claimed in claim 1, and it is characterized in that: described liquid crystal panel is three strong dielectricity liquid crystal panels.
3, module is switched in quick sequential color separation as claimed in claim 1, it is characterized in that: described more than one different wave zones be the wave zone of Red Green Blue light.
4, module is switched in a kind of quick sequential color separation, and it is characterized in that: it comprises:
One is used for light beam with incident is divided into the light beam of different wave zones more than and the prism module that penetrates from wherein different prisms;
Be used for the beam reflection of different wave zones more than is returned the strong dielectricity liquid crystal panel of prism module more than one, be separately positioned on the prism exit facet of light beam of different wave zones more than;
One is used for switching strong dielectricity liquid crystal panel fast opens or closes, and the power supply that the light beam of different wave zones more than is penetrated in the prism module in regular turn, and this power supply is connected respectively to more than one strong dielectricity liquid crystal panel.
5, module is switched in quick sequential color separation as claimed in claim 4, and it is characterized in that: described prism module comprises six colour splitting prisms, and each prism is gummed or separation.
6, module is switched in a kind of quick sequential color separation as claimed in claim 4, and it is characterized in that: described power supply is the continuous impulse power supply.
7, module is switched in quick sequential color separation as claimed in claim 4, and it is characterized in that: the number of described strong dielectricity liquid crystal panel is three.
8, module is switched in quick sequential color separation as claimed in claim 4, and it is characterized in that: described wave zone different more than is the wave zone of Red Green Blue light.
9, module is switched in quick sequential color separation as claimed in claim 5, it is characterized in that: described colour splitting prism is the parallel-plate combination.
10, a kind of quick sequential color separation suitching type projection display equipment, it is characterized in that: it comprises:
One is divided into the light beam of different wave zones more than and the prism module that penetrates from different prisms wherein with incident beam;
Be used for the beam reflection of different wave zones more than is returned the strong dielectricity liquid crystal panel of prism module more than one, it is separately positioned on the prism exit facet of light beam of different wave zones more than;
One is used for switching strong dielectricity liquid crystal panel fast opens or closes, and the power supply that the light beam of different wave zones more than is penetrated in the prism module in regular turn, and it is connected respectively to several strong dielectricity liquid crystal panels;
One is used to throw the video picture module of the signal of video picture module, the light beam of different wave zones more than that it receives that above-mentioned quilt penetrates in regular turn.
11, quick sequential color separation suitching type projection display equipment as claimed in claim 10 is characterized in that: penetration liquid crystal light valve that described video picture module is a monolithic or strong dielectricity liquid crystal panel.
12, quick sequential color separation suitching type projection display equipment as claimed in claim 10 is characterized in that: reflection type liquid crystal panel that described video picture module is a monolithic or strong dielectricity liquid crystal panel.
13, quick sequential color separation suitching type projection display equipment as claimed in claim 10, it is characterized in that: described wave zone different more than is the wave zone of Red Green Blue light.
14, quick sequential color separation suitching type projection display equipment as claimed in claim 10, it is characterized in that: described prism module comprises six colour splitting prisms.
15, quick sequential color separation suitching type projection display equipment as claimed in claim 10, it is characterized in that: the number of described strong dielectricity liquid crystal panel is three.
16, quick sequential color separation suitching type projection display equipment as claimed in claim 10, it is characterized in that: described power supply is the continuous impulse power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01102444 CN1368654A (en) | 2001-02-02 | 2001-02-02 | High-speed timely colour-separating switching module and its projection display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01102444 CN1368654A (en) | 2001-02-02 | 2001-02-02 | High-speed timely colour-separating switching module and its projection display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434972C (en) * | 2004-07-16 | 2008-11-19 | 台达电子工业股份有限公司 | Color splitting prism combination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434972C (en) * | 2004-07-16 | 2008-11-19 | 台达电子工业股份有限公司 | Color splitting prism combination |
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