CN1774596A

CN1774596A - A light pipe based projection engine

Info

Publication number: CN1774596A
Application number: CNA2004800097586A
Authority: CN
Inventors: K·K·李
Original assignee: Wavien Inc
Current assignee: Wavien Inc
Priority date: 2003-06-09
Filing date: 2004-06-09
Publication date: 2006-05-17

Abstract

A light pipe based projection engine includes a X-prism (190, 192, 690, 692) transmitting substantially light of a useful polarization in an output direction (112) and reflecting substantially light of a non-useful polarization in a first orthogonal direction substantially orthogonal to the output direction (112), an initial reflector (114, 128) may reflect the non-said low, said medium, and said high bands of wavelengths (106, 108, 110) in a second orthogonal direction substantially orthogonal to the output direction (112) and the first orthogonal direction, and a final reflector (118, 132) may reflect the non-said low, said medium, and said high bands of wavelengths in the output direction (112), the non-said low, said medium, and said high bands of wavelengths may be rotated substantially to light of the useful polarization by the initial (114, 128) and final reflectors (118, 132).

Description

Projection arrangement based on photoconductive tube

The cross reference of related application:

The application requires the priority of following provisional application series, Nos.60/476,612, the applying date is on June 9th, 2003,60/479,730, the applying date is on June 20th, 2003,60/485,736, the applying date is on July 10th, 2003,60/489,104, the applying date is on July 23rd, 2003, and 60/527,006, the applying date is on December 5th, 2003, and more than application is added in incorporated by reference here.

Technical field

In a plurality of embodiment, the present invention relates to color-separated and guidance system based on photoconductive tube, the input light of broader frequency spectrum is separated into its composition color therein, and is directed to each image device (imager) by a series of photoconductive tubes, optical splitter and prism.

Background technology

The projection display carries out work by light is projected on the screen.Light is arranged to the pattern of color, or bright and dark pattern, or the pattern that possesses of both.By the observer described pattern is observed, by the image that may be familiar with pattern and they, for example feature or outward appearance are carried out association, and the observer thoroughly understands described pattern.Described pattern can form with several different methods.A kind of method that forms pattern is by using representational information flow signal that a branch of light is modulated.

Polarised light can be modulated by using polarizing filter that light is filtered.Usually, if the polarization of optical filter and polarization of incident light are complementary, polarizing filter allows light to pass through, if the polarization of optical filter and polarization of incident light do not match, polarizing filter does not allow light to pass through.LCD (LCD) image device is the example of polarizing filter, can be used in by this way on the projection display of LCD type.The LCD image device can comprise pixel, and it is complementary with polarization of incident light or different and modulated by its polarization is changed over.The light that is input to the LCD image device is being polarized also, make when the polarization of selected pixel and polarization of incident light not simultaneously, selected pixel will be dark.When light occurred or disappear, unconverted pattern and dark pixel can be projected on the screen.If pixel is subjected to the modulation of information in the pattern that the observer is familiar with, when pattern was projected on the screen, the observer may identify this pattern.

Broader frequency spectrum that light emitted from projection display equipment goes out or white light are by a series of optical modules, and for example speculum, optical filter and lens are directed to the LCD image device, as shown in Figure 1.These optical modules are separated into each three primary colors to the white light from light source, normally red (R), green (G), blue (B).These assemblies may be quite expensive.Used by commercialization though have the optical projection system of LCD image device, the cost of assembly is very high, and the accurate aligning of assembly is very crucial to their work.

As shown in Figure 1, white light 12 scioptics of launching from light source 10 14,16 and 18 collimate, and then by each

filter

20 and 22 reflections, and are directed to LCD panel 30,32 and 34.As can be seen from Figure 1, light source 10 certain distances can be left in

LCD panel

30,32 and 34 position, and the result may need extra lens 24,26 and 28, so that light beam is collimated once more.The aligning of the assembly that these are relative to each other must be very accurate, thereby from light source 10 light is coupled to

LCD panel

30,32 and 34 effectively, and loss is minimized.

In addition, assembly is fixed to keep quite costliness of its aligning.If optical projection system can use still less or not too expensive assembly make up, this is desirable.If it is not too responsive that optical projection system can be built into the misalignment of each assembly, this also is desirable.As a result, need a kind of system with efficient, simple in structure and low-cost enforcement polarization conversion.Therefore, need a kind of projection arrangement structure, make light can use comparatively simple system to handle, and reduce cost.

Summary of the invention

Main syllabus of the present invention be by providing a kind of projection arrangement to overcome the shortcoming of above-mentioned correlation technique based on photoconductive tube.Especially, in a first aspect of the present invention, the light that is included on the low inceptive direction the low band of wavelength based on the projection arrangement of photoconductive tube roughly reflects, and the low distribution speculum that on outbound course, the light of the medium wave band of wavelength and high band is roughly transmitted, being arranged to can be to hanging down the low initial reflection mirror that inceptive direction reflects, low initial reflection mirror is upwards reflecting the light of the low band of wavelength with the low third side of outbound course almost parallel, be arranged in the low initial light conduit between low distribution speculum and the low initial reflection mirror, being arranged to can be to low third side to the low final speculum that reflects, with the roughly diametical low final direction of low inceptive direction on low final speculum that the light of the low band of wavelength is reflected, be arranged to low modulation device that the light of the low band of wavelength is roughly modulated, be arranged in the low final photoconductive tube between low initial reflection mirror and the low final speculum, light to the high band of wavelength on high inceptive direction roughly reflects, and the height distribution speculum that on outbound course roughly, the light of the low band of wavelength and medium wave band is roughly transmitted, be arranged to the high initial reflection mirror that can reflect high inceptive direction, and the senior middle school of outbound course almost parallel between the high initial reflection mirror that the light of the high band of wavelength reflected on the direction, be arranged in the high initial light conduit between high distribution speculum and the high initial reflection mirror, being arranged to can be to the final speculum of the height that direction between senior middle school reflects, with the final direction of the roughly diametical height of high inceptive direction on high final speculum that the light of the high band of wavelength is reflected, be arranged in the high final photoconductive tube between high initial reflection mirror and the high final speculum, be arranged to high modulation device that the light of the high band of wavelength is roughly modulated, and be arranged on the outbound course so that the middle modulator that the light of the medium wave band of wavelength is roughly modulated.

In a second aspect of the present invention, the light that is included on the low direction the low band of wavelength based on the projection arrangement of photoconductive tube roughly reflects, and the low speculum that on outbound course, the light of the medium wave band of wavelength and high band is roughly transmitted, the medium wave band of wavelength and the light of high band are received, and upwards the light of the medium wave band of wavelength is roughly reflected the third side, and the intermediate reflectors of on outbound course, the light of the high band of wavelength roughly being transmitted, be arranged in the initial light conduit between low reflector and the intermediate reflectors, light to the high band of wavelength receives, and the high reflection mirror that on high direction, the light of the high band of wavelength is roughly reflected, and be arranged in final photoconductive tube between intermediate mirrors and the high reflection mirror.

In a third aspect of the present invention, the light that is included on the low direction the low band of wavelength based on the projection arrangement of photoconductive tube roughly transmits, and the low speculum that on first peripheral direction, the light of the medium wave band of wavelength and high band is roughly reflected, be arranged on the low direction so that the low modulation device that the light of the low band of wavelength is roughly modulated, be arranged to the first peripheral speculum that can reflect first peripheral direction, the first peripheral speculum that on second peripheral direction, the light of the medium wave band of wavelength and high band is roughly reflected, be arranged in the low photoconductive tube between the low speculum and the first peripheral speculum, be arranged to the intermediate mirrors that can reflect first peripheral direction, the medium wave band of wavelength and the light of high band are received, and the light of the medium wave band of wavelength roughly reflects on outbound course, and the intermediate mirrors of on the 3rd peripheral direction, the light of the high band of wavelength roughly being transmitted, be arranged in the middle initial light conduit between the first peripheral speculum and the intermediate mirrors, be arranged on the outbound course so that the middle modulator that the light of the medium wave band of wavelength is roughly modulated, be arranged to the second peripheral speculum that can reflect the 3rd peripheral direction, the second peripheral speculum roughly reflects at light that encloses all round on the direction the high band of wavelength, be arranged in the final photoconductive tube in centre between the intermediate mirrors and the second peripheral speculum, be arranged to and enclose the high reflection mirror that direction reflects all round to, high reflection mirror high band light to wavelength on high direction receives, and the light of the high band of wavelength roughly reflected, be arranged on the high direction so that the high modulation device that the light of the high band of wavelength is roughly modulated, be arranged in the high photoconductive tube between the second peripheral speculum and the high reflection mirror, light to the low band of wavelength on outbound course roughly reflects, and the low facetted mirrors that the light of the medium wave band of wavelength and high band is roughly transmitted, and the light to the high band of wavelength roughly reflects on outbound course, and the high facetted mirrors that the light of the low band of wavelength and medium wave band is roughly transmitted.

In a fourth aspect of the present invention, the light that is included on first peripheral direction the low band of wavelength based on the projection arrangement of photoconductive tube roughly transmits, and the low speculum that on second peripheral direction, the light of the medium wave band of wavelength and high band is roughly reflected, be arranged to the first peripheral speculum that can reflect first peripheral direction, first peripheral speculum light to the low band of wavelength on low direction roughly reflects, be arranged on the low direction so that the low modulation device that the light of the low band of wavelength is roughly modulated, be arranged in the low photoconductive tube between the low speculum and the first peripheral speculum, be arranged to the intermediate mirrors that can reflect second peripheral direction, the medium wave band of wavelength and the light of high band are being received, and the light to the medium wave band of wavelength roughly reflects on the outbound course, and the intermediate mirrors of on second peripheral direction, the light of the high band of wavelength roughly being transmitted, be arranged on the outbound course so that the middle modulator that the light of the medium wave band of wavelength is roughly modulated, initial light conduit in the middle of being arranged between the first peripheral speculum and the intermediate mirrors, be arranged to the second peripheral speculum that can reflect second peripheral direction, the second peripheral speculum that on the 3rd peripheral direction, the light of the high band of wavelength is roughly reflected, be arranged in the final photoconductive tube in centre between the intermediate mirrors and the second peripheral speculum, be arranged to the high reflection mirror that can reflect the 3rd peripheral direction, the high reflection mirror that receives and on high direction, the light of the high band of wavelength is roughly reflected at light to the high band of wavelength, be arranged on the high direction so that the high modulation device that the light of the high band of wavelength is roughly modulated, be arranged in the high photoconductive tube between the second peripheral speculum and the high reflection mirror, light to the low band of wavelength on outbound course roughly reflects, and the low facetted mirrors that the light of the medium wave band of wavelength and high band is roughly transmitted, and the light to the high band of wavelength roughly reflects on outbound course, and the high facetted mirrors that the light of the low band of wavelength and medium wave band is roughly transmitted.

The present invention reaches these purposes and other purposes by a kind of projection arrangement based on photoconductive tube is provided.Above-mentioned feature of the present invention, other feature and advantage, and the structure of a plurality of embodiment of the present invention is described in detail with reference to the accompanying drawings with work.

Description of drawings

The accompanying drawing that is added in here and forms the part of specification shows a plurality of embodiment of the present invention, and in conjunction with describing, is further used for principle of the present invention is made an explanation, thereby makes those skilled in the art can make and use the present invention.In the accompanying drawings, identical Reference numeral is represented identical or intimate element.By the reference following detailed, and and accompanying drawing get in touch, will the advantage that bring the present invention and it be more readily understood, wherein:

Fig. 1 shows the projection arrangement based on photoconductive tube according to correlation technique;

Fig. 2 A-2D shows the schematic diagram based on the projection arrangement of photoconductive tube of first embodiment according to the invention;

Fig. 3 shows the coupling unit that embodiments of the invention use;

Fig. 4 shows the projection arrangement based on photoconductive tube according to a second embodiment of the present invention;

Fig. 5 shows further developing of projection arrangement based on photoconductive tube shown in Figure 4;

Fig. 6 shows four looks or the multicolored X type prism that embodiments of the invention use;

Fig. 7 shows prism and the glass blocks that embodiments of the invention use;

Fig. 8 shows the arrangement of the projecting lens of embodiments of the invention use;

Fig. 9 shows the projecting lens that embodiments of the invention use;

Figure 10 shows the right-angle prism that embodiments of the invention use;

Figure 11 A and B show acute angle and the obtuse angle prism that embodiments of the invention use;

Figure 12 shows according to an embodiment of the invention the schematic diagram based on the projection arrangement of photoconductive tube;

Figure 13 A shows the schematic diagram based on the projection arrangement of photoconductive tube of a third embodiment in accordance with the invention;

Figure 13 B shows the schematic diagram based on the projection arrangement of photoconductive tube of a fourth embodiment in accordance with the invention;

Figure 14 shows according to an embodiment of the invention the transparent schematic diagram based on the projection arrangement of photoconductive tube;

Figure 15 shows according to an embodiment of the invention the transparent schematic diagram based on the projection arrangement of photoconductive tube;

Figure 16 shows according to an embodiment of the invention the transparent schematic diagram based on the projection arrangement of photoconductive tube;

Figure 17 shows according to an embodiment of the invention the transparent schematic diagram based on the projection arrangement of photoconductive tube; And

Figure 18 shows according to an embodiment of the invention the transparent schematic diagram based on the projection arrangement of photoconductive tube

Figure 19 shows the lens combination that embodiments of the invention use;

Figure 20 A-20C shows the photoconductive tube that embodiments of the invention use;

Figure 21 shows the polarization reduction apparatus that embodiments of the invention use;

Figure 22 A-22B shows the polarization reduction apparatus that embodiments of the invention use;

Figure 23 A-23B shows the polarization reduction apparatus that embodiments of the invention use; And

Figure 24 A-24C shows the schematic diagram based on the projection arrangement of photoconductive tube according to a fifth embodiment of the invention.

The specific embodiment

People wish that optical projection system can be made relatively simply and assemble.People wish that optical projection system can be to the misalignment relative insensitivity of each assembly.People wish that optical projection system is made of relative not expensive assembly.People wish optical projection system compactness, sturdy and durable and portable relatively.People wish that optical projection system relies on light pipe to transmit light between each assembly, and do not wish accurately to aim between assembly.

Though following description comprises LCD (LCD) panel, same scheme also can be applied to other image panel technology, for example, and digital micro-mirror lens device (DMD), polytype transmission LCD, and silicon wafer display element (LCOS) panel.

Be used in the following Example though have the trichromatic system of three image device panels, similar scheme can also be applied in the system that has single sided board or two panels.Similar scheme can also be applied in continuous color or the color rolling system, and is applied in color circulation or the polarization reduction or the circulatory system.

Shown in Fig. 2 A, broader frequency spectrum, for example white input light 101 can be directed to low distribution speculum 102 and high distribution speculum 124 by optional input photoconductive tube.This optional photoconductive tube is evenly distributed light intensity.Low distribution speculum 102 and high distribution speculum 124 are separated into light low, and for example red (R), the centre, for example green (G), and high, for example blue (B) composition, and they are distributed on three different directions, as shown in the figure.In this embodiment, red light is reflected to low initial reflection mirror 114, then by low initial reflection mirror 114 reflections, then through glass blocks, and, pass through low modulation device 122 then by low final speculum 118 reflections, be imported at last in low facetted mirrors 140 and the high facetted mirrors 142.Then, have low modulation device 122 spatial information through the red light of ovennodulation by low facetted

mirrors

140 and 142 reflections of high facetted mirrors to projecting lens.Subsequently, image is projected on the screen.

Blue light is reflected in a similar fashion to high initial reflection mirror 128 and high final speculum 132 and glass blocks, pass through high modulation device 136 then, and the final sum red light is projected on the screen together.Green light is not changed direction through low distribution speculum 102 and high distribution speculum 124, then through the middle modulator 138 towards low facetted mirrors 140 and high facetted mirrors 142.Finally be directed to projecting lens and project on the screen through the green light of ovennodulation.Final result be three kinds of colors be separated, modulated and be synthesized, thereby form single color image on the screen.

The light that is sent by light source can be directed to image device by a series of photoconductive tubes and prism.Because these photoconductive tubes and prism can be assembled together accurately, and not needing too many fixing, will be very competitive so finally be used for the cost of projection arrangement.Though for illumination purposes, can see that light is separated by the space,, just can arrange the modulator order if modulator can distinguish the input light wavelength.In this case, low distribution speculum 102 and high distribution speculum 124 and low facetted mirrors 140 and high facetted mirrors 142 can be omitted, same omissible intermediate prism and intermediate mirrors in addition.

Especially, in first embodiment shown in Fig. 2 A, projection arrangement 100 based on photoconductive tube can comprise low distribution speculum 102, its light 104 to the low band of wavelength on low inceptive direction 106 roughly reflects, and on outbound course 112 light 108 of the medium wave band of wavelength and the light 110 of high band is roughly transmitted.Low initial reflection mirror 114 can be arranged to and can reflect low inceptive direction 106, so as the light 104 of the low band of wavelength to be imported and the low third side of outbound course 112 almost parallels to 116.In a plurality of embodiment, low initial reflection mirror 114 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance (mismatchedimpedance), or speculum.

In one embodiment, can comprise low initial light conduit 260, so that the light from the low band of the wavelength of low distribution speculum 102 is received, and the low band of wavelength wide caused to be transferred to hang down initial reflection mirror 114 based on the projection arrangement 100 of photoconductive tube.In a plurality of embodiment, low initial light conduit can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, low initial light conduit 260 can be straight photoconductive tube (SLP) or tapered light pipe (TLP), shown in Figure 20 A-20C.

Low initial reflection mirror 118 can be arranged to and can reflect to 116 low third side, so that the light 104 of the low band of wavelength is imported and the roughly diametical low inceptive directions 120 of low inceptive direction 106.In a plurality of embodiment, low initial reflection mirror 118 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.Low modulation device 122 can be arranged to the light 104 of the low band of wavelength is roughly modulated.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise low final photoconductive tube 262, so that the light from the low band of the wavelength of low initial reflection mirror 114 is received, and the light 104 of the low band of wavelength roughly is transferred to hangs down final speculum 118.In a plurality of embodiment, low final photoconductive tube 262 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, low final photoconductive tube 262 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

In one embodiment, projection arrangement 100 based on photoconductive tube can also comprise high distribution speculum 124, its light 110 to the high band of wavelength on high inceptive direction 126 roughly reflects, and on outbound course 112 roughly the light 106 of the low band of wavelength and the light 108 of medium wave band is roughly transmitted.In one embodiment, low distribution speculum 102 and high distribution speculum 124 are made of distribution X type prism 190.High initial reflection mirror 128 can be arranged to and can reflect high inceptive direction 126, so as and the senior middle school of outbound course 112 almost parallels between on the direction light 110 to the high band of wavelength reflect.In a plurality of embodiment, high initial reflection mirror 128 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise high initial light conduit 264, so that the light 110 from the high band of the wavelength of height distribution speculum 124 is received, and the light 110 of the high band of wavelength roughly is transferred to high initial reflection mirror 128.In a plurality of embodiment, high initial light conduit 264 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, high initial light conduit 264 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

High final speculum 132 can be arranged to and can reflect direction between senior middle school 130, so that the light 110 of the high band of wavelength is imported and the final direction 134 of the roughly diametical height of high inceptive direction 126.In a plurality of embodiment, high final speculum 132 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.High modulation device 136 can be arranged to the light 110 of the high band of wavelength is roughly modulated.Middle modulator 138 can be disposed on the outbound course 112, so that the light 108 of the medium wave band of wavelength is roughly modulated.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise high final photoconductive tube 266, so that the light 110 from the high band of the wavelength of high initial reflection mirror 128 is received, and the light 110 of the high band of wavelength roughly is transferred to high final speculum 132.In a plurality of embodiment, high final photoconductive tube 266 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, high final photoconductive tube 266 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise the low facetted mirrors 140 that is arranged on the low final direction 120, so that the light 104 of the low band of wavelength is roughly imported outbound course 112, and the light 108 of the medium wave band of wavelength and the light 110 of high band roughly transmitted.In this embodiment, projection arrangement 100 based on photoconductive tube can also comprise the high facetted mirrors 142 that is arranged on the high final direction 134, so that the light 110 of the high band of wavelength is roughly imported outbound course 112, and the light 106 of the low band of wavelength and the light 108 of medium wave band roughly transmitted.In one embodiment, low facetted mirrors 140 and high facetted mirrors 142 are made of combination X type prism 192.

In one embodiment, can also comprise based on the projection arrangement 100 of photoconductive tube being arranged on the outbound course 112 so that the projection lens system 984 that the light 110 of the light 108 of the light 106 of the low band of wavelength, medium wave band and high band is collected and focused on that example is as shown in Figure 8 by two lens 986 and 988 projection lens systems that constitute 994.

In one embodiment, the projection arrangement 100 based on photoconductive tube can comprise the input photoconductive tube 178 with input surface 180 and output surface 182.Output surface 182 can be arranged to roughly be close to low distribution speculum 102 and high distribution speculum 124.Input photoconductive tube 178 can receive light at surperficial 180 places of input, and at output surface 182 places wide causing is transferred to low distribution speculum 102 and high distribution speculum 124.

In a plurality of embodiment, the shape on input surface 180 can be flat, protruding, recessed, annular with sphere.In a plurality of embodiment, the shape of output surface 182 can be flat, protruding, recessed, the annular with sphere.In a plurality of embodiment, input photoconductive tube 178 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, input photoconductive tube 178 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

Image from each device of three image devices can synthesize by combination X type prism, makes single color image be projected on the screen by projecting lens, shown in Fig. 2 A.Combination X type prism should be enough big, so that the whole light from image device are roughly transmitted, thereby these light is collected by projecting lens.Especially, combination X type prism 192 should be enough big, with the numerical aperture (NA) of adaptating lighting system, or adapts to the numerical aperture that the next-door neighbour makes up the assembly of X type prism 192 upstreams at least, and X type prism 192 receives light from this assembly.If combination X type prism 192 is enough big, thereby can not adapt with the numerical aperture from the assembly of its reception light, light may be got on the side wall that makes up X type prism 192, and is lost or be reflected to output, becomes undesirable ghost image.As a result, numerical aperture is big more, and combination X type prism 192 is just big more, and projecting lens will be farther from image device chip (chip).Because the aligning of projecting lens and image device chip does not more allow angular displacement, so the increase from the image device chip to distance the projecting lens also may significantly increase the cost of projecting lens.

In a plurality of embodiment, slit 105 can be inserted between each assembly of projection arrangement, makes the transmission of light more effective.Especially, slit 105 can be inserted between each photoconductive tube, prism or the optical splitter.In a plurality of embodiment, these slits 105 can be filled by air, and perhaps, slit 105 can use the material with low-refraction to fill, for example clean or transparent relatively epoxy resin.Especially, each slit 105 can be the surface of two optical modules may being made by optical glass separately, thereby add the third refractive index and the refractive index of optical module surface is separated from each other by between.

When not having slit 105 between the optical module, light may be along roughly the same path through two optical modules that face mutually.If the path through two optical modules is an angle, this angle will make light through the sidewall of optical module and be lost in the free space, be the not too hope of people institute like this.On the other hand, if slit 105 is inserted between two optical modules, for example, slit uses all low material of refractive index of each optical module of refractive index ratio to fill separately, some light that originally overflow from optical module can be reflected at slit 105, and are retained in the optical module.

If the light that may overflow when slit 105 does not exist is transmitted with an angle, this angle makes it leave projection arrangement fully, and this may be desirable.Therefore, slit 105 can be retained in light in the projection arrangement by complete internal reflection (TIR).When light when another optical module is propagated, slit 105 can make light with its different angle in the path of the optical module of process reflect.

Under the situation of the image device chip of the reflection of for example LCOS or digital light projection device (DLP), to the needs of reflection and the needs that the light from three image device chips is synthesized, usually need polarizing beam splitter (PBS) and combination X type prism 192, as a result, the image device chip will be " two prism " of the output surface of the combination X type that leaves prism 192 as shown in Figure 8.The distance that increases between image device chip and combination X type prism 192 may cause the expensive of projecting lens in LCOS or the DLP system.The misalignment of angle all may significantly reduce the efficient of this projection arrangement between any two continuous assemblies.The cost that increases may be by between image device chip and the combination X type prism 192 and the accurate aligning between the intermediate module and producing.In one embodiment, the section of polarizing beam splitter and X type prism can be roughly the same with the zone of action of imaging panel.In this embodiment, the light of wide-angle can be reflected by complete internal reflection by the sidewall of polarizing beam splitter and X type prism.

In one embodiment, as shown in Figure 9, the problems referred to above are roughly eliminated.The image of image device chip is illustrated with target (object) in the drawings, represents with arrow.Distribution prism 190 that the front was described and combination X type prism 192 are expressed by the aspect ratio of single input photoconductive tube 978 with 2: 1 in this perspective view.Other sizes of photoconductive tube can depend on the size of imaging panel.In Fig. 9, when in input photoconductive tube 978, seeing,, use OR1 owing to repeatedly reflection from sidewall, OR2 ... wait the pattern matrix that marks to occur.The one dimension pattern matrix is illustrated in Fig. 9, will be two-dimensional array for rectangular light pipes.The number of image will depend on the numerical aperture (NA) of system.

If projecting lens 994 is positioned in the exit of input photoconductive tube 978, pattern matrix will be projected on the screen.This may be undesirable.In order to overcome this problem, the output photoconductive tube 984 that has a same dimension with input photoconductive tube 978 can be positioned in the output of optical projection system.

Lens or lens combination 994 are positioned between the photoconductive tube, the pattern matrix that makes target at the output plane unit of the sentencing magnifying power of output photoconductive tube 984 by imaging, as shown in the figure.Then, a plurality of image I R1, IR2... etc. will be synthesized by output photoconductive tube 984, and form single output image.In this way, whole light of launching from target will not be collected at image with roughly losing, generate single image.Then, as shown in Figure 8, projecting lens 194 is used to this image projection to screen.In this embodiment, will be at the image of the output of photoconductive tube 984 very near projecting lens, the result, the cost of projecting lens can be lowered.

In another embodiment, as shown in Figure 9, number is that the lens of F can be manufactured into big lens, thereby reduces the cost of lens, and reduces distortion by the length that increases input photoconductive tube and output photoconductive tube.As shown in Figure 8, owing to input photoconductive tube 978 is used for being illustrated in polarizing beam splitter and the combination X type prism 192 that projection arrangement uses, so the increase of length can achieve the goal by increase prism or photoconductive tube between combination X type prism 192 and lens.There is a kind of exchange between the reduction of the extra prism that increases or the increase of photoconductive tube cost and lens cost and the picture quality of improvement.

In another embodiment, output photoconductive tube 984 can be of different sizes, make employed lens can be based on the size of output photoconductive tube 984, according to desirable image is amplified or amplifies.

In another embodiment, input photoconductive tube 978 shown in Fig. 9 and output photoconductive tube 984 can have curved surface respect to one another, rather than flat surface.In this embodiment, curved surface substitutes lens 994, perhaps also has curved surface except lens 994, and the image at LCOS chip place is mapped on the output surface of output photoconductive tube 984.

Fig. 8 shows an embodiment of LCOS optical projection system.Can be polarization or unpolarized white input light 101 be imported in the distribution X type prism 190 by optional input photoconductive tube 178.Distribution X type prism 190 can be the Amici prism of 2 looks, 3 looks, 4 looks, 5 looks or more colors.What illustrate for simplicity, is 2 look Amici prisms.As shown in the figure, these 2 kinds of colors are directed to opposite direction earlier, utilize

prism

808 and 804 to change over forward direction then.After light was reflected from prism 808, light was reflected by polarizing beam splitter 812 and enters LCOS814.

Image information at the LCOS814 place is modulated light, and image is reflexed to combination X type prism 192, and finally changes over the direction to lens 816, as shown in the figure.When the LCOS of different colours chip is modulated, the light beam of other colors will propagate into lens 816 in a similar fashion.192 pairs of whole these images of combination X type prism synthesize, and form single color output image.Lens 816 are by combination X type prism 192 and each polarizing beam splitter, the LCOS image imaging on the output surface of output photoconductive tube 184.Then, the composograph at the output surface place is projected on the screen by projecting lens.Output lens is still near the image at output photoconductive tube 184 places, thereby reduced the cost of lens 816.

Lens 994 shown in lens 816 shown in Fig. 8 and Fig. 9 can be the lens combinations 900 that comprises a plurality of parts.In one embodiment, lens combination 900 comprises first imaging len 902 and second imaging len 904, and is arranged in the object lens 906 between them, as shown in figure 19.First imaging len 902 focuses on the image of input photoconductive tube 908 on the object lens 906.Object lens 906 change direction of light, and then, image is focused on the output of output photoconductive tube 910 once more by second imaging len 904.The almost whole light that enter input photoconductive tube 908 will be focused in the output photoconductive tube 910, because the symmetry of this system is not lost in theory.

In one embodiment, can comprise the projecting lens 194 that is arranged to be close to outbound course 112, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength are roughly collected and focused on based on the projection arrangement 100 of photoconductive tube.Output photoconductive tube 184 can have input surface 186 and the output surface 188 that is arranged to be close to outbound course 112.Output photoconductive tube 184 can receive light at surperficial 186 places of input, and at output surface 188 places light is roughly transmitted.

In a plurality of embodiment, the shape on input surface 186 can be flat, protruding, recessed, annular with sphere.In a plurality of embodiment, the shape of output surface 188 can be flat, protruding, recessed, the annular with sphere.In a plurality of embodiment, output photoconductive tube 184 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, output photoconductive tube 184 can be SLP or TLP.

Though described said system is the rgb color system, other have the color system above three primary colours, and for example 4 looks or 5 colour systems system also can be implemented.The expansion of 4 looks as shown in Figure 4 or the optical projection system of 5 looks can by prism, light pipe, LCD and projecting lens are expanded to the 4th and/or the 5th kind of color achieve the goal, increase and second and the third extra assembly that is similar in color.

As shown in Figure 6, the trichromatic system shown in Fig. 2 A can utilize 5-look X type prism 690 to expand to 4 looks or 5 looks.5-look X type prism 690 can also be by removing a kind of 4 colour systems system that is used as in five kinds of colors.5-look X type prism 690 has the reflecting surface at four diagonal angles, and each reflecting surface is to the light c of 5 kinds of colors ₁, c ₂, c ₃, c ₄And c ₅In a kind of the reflection.In a plurality of embodiment, coloured light c ₁, c ₂, c ₃, c ₄And c ₅Can be three primary colours.A kind of in five kinds of colors will be by any reflection in four reflecting surfaces, but will be transmitted through.Then, each in four color beam that are reflected all is directed to 5-look X type prism 690 by a series of right-angle prisms and glass blocks, as shown in Figure 7.The color synthetic prisms can have the reflecting surface with X type prism 690 similar diagonal angles.In one embodiment, but the 5-colour cell is closed the reflecting surface at diagonal angle of X type prism 692 and the reflecting surface complementation (complimentary) of 5-look X type prism 690.Then, He Cheng output will be projected on the screen by projecting lens.

Fig. 2 B shows can be added in the light path shown in Fig. 2 A two kinds other light paths.For the purpose that shows, the assembly shown in Fig. 2 B be from the visual angle of Fig. 2 A, from about outbound course 112 roughly the angle of half-twist be shown.Especially, shown in Fig. 2 B, projection arrangement 100 based on photoconductive tube can also comprise low-middle distribution speculum 144, its light 146 to the low-medium wave band of wavelength on low-middle inceptive direction 148 roughly reflects, and light 106, the light 108 of medium wave band and the light 110 of high band to the low band of the light 150 of the height-medium wave band of wavelength and wavelength roughly transmits on outbound course 112.Low-middle initial reflection mirror 152 can be arranged to and can reflect low-middle inceptive direction 148, so as with outbound course 112 almost parallels low-in third side's light 146 to the low-medium wave band of wavelength on 154 reflect.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise low-middle initial light conduit 268, so that the light 146 from the low-medium wave band of the wavelength of low-middle distribution speculum 144 is received, and the light 146 of the low-middle wave band of wavelength roughly is transferred to low-middle initial reflection mirror 152.In a plurality of embodiment, low-middle initial light conduit 268 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, low-middle initial light conduit 268 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

Low-in final speculum 156 can be arranged to can to low-in the third side reflect to 154 so that with low-middle inceptive direction 148 roughly diametical low-on the final direction 158 light 146 to the low-medium wave band of wavelength reflect.Low-middle modulator 160 can be arranged to the light 146 of the low-medium wave band of wavelength is roughly modulated.

In one embodiment, can comprise based on the projection arrangement 100 of photoconductive tube low-in final photoconductive tube 272, so that the light from the low-medium wave band of the wavelength of low-middle initial reflection mirror 152 is received, and the light 146 of the low-medium wave band of wavelength roughly is transferred to low-in final speculum 156.In a plurality of embodiment, low-in final photoconductive tube 272 can make by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, low-in final photoconductive tube 272 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

In this embodiment, height-middle distribution speculum 162 can be on height-middle inceptive direction 164 roughly reflects the light 150 of the height-medium wave band of wavelength, and light 106, the light 108 of medium wave band and the light 110 of high band to the low band of the light 146 of the low-medium wave band of wavelength and wavelength roughly transmits on outbound course 112 roughly.Height-middle initial reflection mirror 166 can be arranged to and can reflect height-middle inceptive direction 164, so as with the height of outbound course 112 almost parallels-in third side's light 150 to the height-medium wave band of wavelength on 168 reflect.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise height-middle initial light conduit 274, so that the light 150 from the height-medium wave band of the wavelength of height-middle distribution speculum 162 is received, and the light 150 of the height-medium wave band of wavelength roughly is transferred to height-middle initial reflection mirror 166.In a plurality of embodiment, height-middle initial light conduit 274 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, height-middle initial light conduit 274 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

High-in final speculum 170 can be arranged to can to high-in the third side reflect to 168 so that with the roughly diametical height of height-middle inceptive direction 164-in finally on the direction 172 light 150 to the height-medium wave band of wavelength reflect.Height-middle modulator 163 can be arranged to the light 150 of the height-medium wave band of wavelength is roughly modulated.

In one embodiment, based on the projection arrangement 100 of photoconductive tube can comprise height-in final photoconductive tube 276, so that the light 150 from the height-medium wave band of the wavelength of height-middle initial reflection mirror 166 is received, and the light 150 of the height-medium wave band of wavelength roughly be transferred to height-in final speculum 170.In a plurality of embodiment, high-in final photoconductive tube 276 can make by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, high-in final photoconductive tube 276 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise low-middle facetted mirrors 174, its light 146 to the low-medium wave band of wavelength on outbound course 112 roughly reflects, and light 106, the light 108 of medium wave band, the light 110 of high band and the light 150 of height-medium wave band to the low band of wavelength roughly transmits on outbound course.Projection arrangement 100 based on photoconductive tube can also comprise height-middle facetted mirrors 176, its light 150 to the height-medium wave band of wavelength on outbound course 112 roughly reflects, and light 106, the light 108 of medium wave band, the light 110 of high band and the light 146 of low-medium wave band to the low band of wavelength roughly transmits on outbound course 112.

In one embodiment, shown in Fig. 2 C, can also comprise polarization reduction apparatus 200 based on the projection arrangement 100 of photoconductive tube.Polarization reduction apparatus 200 can be arranged to roughly be close to low distribution speculum 102 and high distribution speculum 124, so that surperficial 202 places roughly receive non-polarized light in input, and useful polarised light 206 roughly is transferred to low distribution speculum 102 and high distribution speculum 124 at output surface 204 places.

In one embodiment, as shown in figure 21, polarization reduction apparatus 200 can comprise polarizing beam splitter 208.Polarizing beam splitter 208 can transmit useful polarised light 206 on outbound course 112, and with first orthogonal direction 212 of outbound course 112 approximate vertical on otiose polarised light 210 is reflected.In a plurality of embodiment, polarizing beam splitter 208 can be for example to have the polarizing coating of Bragg grating or the prism or the speculum of pattern of polarization on one surface.

In one embodiment, for example the wave plate 248 of half-wave plate can be disposed on first orthogonal direction 212, so that otiose polarised light 210 is postponed or rotates, becomes useful polarised light 206 up to it.In another embodiment, between polarizing beam splitter 208 and wave plate 248, slit 250 can be arranged.In this embodiment, light can be maintained in the prism that comprises polarizing beam splitter 208 by complete internal reflection (TIR).In a plurality of embodiment, slit 250 can use air or fill as the compound of feature with low-refraction.

In another embodiment, as Figure 22-shown in Figure 24, hypercube (supercube) the polarization reduction apparatus that does not have half-wave plate is used.A plurality of embodiment of the polarization reduction apparatus 700 of hypercube type are illustrated in Figure 22 and Figure 23.Polarizing beam splitter 702 can be separated into the non-polarized light from input photoconductive tube 178 the useful polarised light 704 with polarization 770 shown in Figure 22 A and Figure 24 A, and the otiose polarised light 708 with polarization 772 shown in Figure 22 B and Figure 24 B.Polarizing beam splitter 702 can transmit useful polarised light 704 on outbound course 706, and with first orthogonal direction 710 of outbound course 706 approximate vertical on otiose polarised light is reflected.In one embodiment, when polarization 772 is light time of roughly S type polarization or vertical polarization, polarization 770 can be the light of P type polarization or horizontal polarization roughly.In an optional embodiment, the plane of polarization can be inverted.

Useful polarised light 704 can be propagated by polarizing beam splitter 702, and is changed direction by first output reflector 720 and second output reflector 722, has unaltered polarization 770 and leaves second output reflector 722, shown in Figure 22 A and 24A.On the other hand, otiose polarised light 708 can be by 714 reflections of initial reflection mirror, shown in Figure 22 B and 24B after leaving polarizing beam splitter 702.Initial reflection mirror 714 can reflect otiose polarised light 708 about the axle with plane of polarization 772 approximate vertical of otiose polarised light 708, and in this case, this plane of polarization is S type or vertical plane.Then, final speculum 718 can reflect otiose polarised light 708 on the direction parallel with outbound course 706.Therefore, the inclined surface of initial reflection mirror 714 can be rotated 90 ° with respect to final speculum 718.Though otiose polarised light 708 still is listed in the otiose polarised light that is used to follow the tracks of purpose, but because the plane of polarization of otiose polarised light 708 is level at present, or P type polarization, so that with the plane of polarization approximate match of useful polarised light 704, so it has become useful polarised light.In one embodiment, useful polarised light 704 and otiose polarised light 708 can be coupled to output photoconductive tube 732, and evenly distribute.

In one embodiment, first output reflector 720 can be arranged to and can reflect outbound course 706.First output reflector 720 can reflect useful polarised light 704 on second orthogonal direction 716.In a plurality of embodiment, first output reflector 720 can be the mismatch impedance of for example prism, right-angle prism or speculum.In one embodiment, first output reflector 720 can have the coating that the predetermined portions to Spectrum of Electromagnetic Radiation transmits.This removes them before can being used in black light is coupled into projection arrangement 100.In a plurality of embodiment, the predetermined portions of Spectrum of Electromagnetic Radiation can be the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their combination.In an optional embodiment, coating can be to the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their some combination is reflected.

In one embodiment, shown in Figure 22 A, second output reflector 722 can be arranged to and can reflect second orthogonal direction 716.Second output reflector 722 can reflect useful polarised light 704 on outbound course 706.In another embodiment, shown in Figure 24 B, second output reflector 722 can be arranged to and can reflect outbound course 706.Second output reflector 722 can reflect otiose polarised light 708 on second orthogonal direction 716.In a plurality of embodiment, second output reflector 722 can be the mismatch impedance of for example prism, right-angle prism or speculum.In one embodiment, second output reflector 722 can have the coating that the predetermined portions to Spectrum of Electromagnetic Radiation transmits.This removes them before can being used in black light is coupled into projection arrangement 100.In a plurality of embodiment, the predetermined portions of Spectrum of Electromagnetic Radiation can be that infrared light, visible light, wavelength are the light of bandwidth, special coloured light, or their combination.In an optional embodiment, coating can be to the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their some combination is reflected.

In one embodiment, initial reflection mirror 714 can be arranged to and can reflect first orthogonal direction 710.Initial reflection mirror 714 can with second orthogonal direction 716 of outbound course 706 and first orthogonal direction, 710 approximate vertical on otiose polarised light 708 is reflected.In a plurality of embodiment, initial reflection mirror 714 can be the mismatch impedance of for example prism, right-angle prism or speculum.The mismatch impedance can be reflected for example electromagnetic ripple with the mode of echo.For example, when the mismatch impedance make the part of ripple or certain wave-length coverage by the time, it can reflect another part of ripple or other scopes of wavelength.

In one embodiment, initial reflection mirror 714 can have the coating that the predetermined portions to Spectrum of Electromagnetic Radiation transmits.This removes them before can being used in black light is coupled into projection arrangement 100.In a plurality of embodiment, the predetermined portions of Spectrum of Electromagnetic Radiation can be the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their combination.In an optional embodiment, coating can be to the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their some combination is reflected.

In one embodiment, initial reflection mirror 718 can be arranged to and can reflect second orthogonal direction 716.Final speculum 718 can reflect otiose polarised light 708 on outbound course 706.In a plurality of embodiment, final speculum 718 can be the mismatch impedance of for example prism, right-angle prism or speculum.In one embodiment, final speculum 718 can have the coating that the predetermined portions to Spectrum of Electromagnetic Radiation transmits.This removes them before can being used in black light is coupled into projection arrangement 100.In a plurality of embodiment, the predetermined portions of Spectrum of Electromagnetic Radiation can be the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their combination.In an optional embodiment, coating can be to the light of the wavelength of infrared light, visible light, bandwidth, special coloured light, or their some combination is reflected.

In one embodiment, the polarization 772 of otiose polarised light 708 can roughly be rotated, so that be complementary by initial reflection mirror 714 and final speculum 718 polarization 770 with useful polarised light 704.In this embodiment, first orthogonal direction 706 and second orthogonal direction 716 can roughly be positioned at the plane of polarization 772 of otiose polarised light 708.This basic block can be used to the otiose polarised light 708 from polarizing beam splitter 702 is reflected, and change its direction, as mentioned above, make the polarization 772 of otiose polarised light 708 be converted into the polarization 770 of useful polarised light 704, and direction is changed over outbound course 706.

In one embodiment, useful polarised light 704 can be after it changes over outbound course 706 to direction by final speculum 718, leaves polarizing beam splitter with the direction different with otiose polarised light 708.In one embodiment, shown in Figure 22 A, first output reflector 720 and second output reflector 722 can be used to useful polarised light 704 changed over otiose polarised light 708 has identical direction.In optional embodiment, when second output reflector 722 shown in Figure 24 B changes over the direction of otiose polarised light 708 when having identical direction with useful polarised light, the direction of the 720 pairs of useful polarised lights 704 of first output reflector shown in Figure 24 A changes.Partition apparatus 746 can be used in and make useful polarised light 704 from leaving with the identical surface that otiose polarised light 708 leaves under any situation.For useful polarised light 704 and otiose polarised light 708 are coupled into output photoconductive tube 732, this may be useful.

Fig. 3 shows the work of photoconductive tube or glass blocks and right-angle prism.When light 1 in photoconductive tube and right-angle prism during intracardiac propagation, it will be propagated and can not get on the sidewall.On the other hand, light 2 and light 3 can be got on the sidewall.Optionally air slots provides internal reflection completely, makes light after being reflected by right-angle prism, propagates with identical angle, as shown in the figure.Do not have air slots, these light may be lost to the outside of photoconductive tube, and cause undesirable loss.

In one embodiment, has the input surface 202 that the input photoconductive tube 178 of importing surface 180 and output surface 182 can be arranged to be close to polarization reduction apparatus 200.Input photoconductive tube 178 can roughly receive non-polarized light at surperficial 180 places of input, and at output surface 182 places non-polarized light is transferred to polarizing beam splitter 208.

Fig. 4 shows another embodiment based on the optical projection system of photoconductive tube, and wherein, projection arrangement can be used to use with dual paraboloid speculum (DPR) system and polarization reduction apparatus.The light of being exported by the light source of for example arc lamp is roughly focused on by the input of dual paraboloid mirror system in for example tapered light pipe.Then, the output of tapered light pipe is coupled in the projection arrangement based on photoconductive tube.Defective polarised light can be converted into suitable polarization, and utilizes the synthesizer photoconductive tube and the primary light of correct polarization to synthesize, and makes that output is to have the polarised light that same intensity distributes.Then, this output can be coupled in the projection arrangement, shown in Fig. 2 A.

In another embodiment, as Fig. 2 and shown in Figure 4, the input of optical projection system can also be from the output of parabolic mirror together with fly lens, polarizing beam splitter array and condenser lens.Be directed to the input of optical projection system from a plurality of images of each fly lens.

Especially, in one embodiment, shown in Fig. 2 D, can comprise shell speculum 230 with first focus 232 and second focus 234 based on the projection arrangement 100 of photoconductive tube.In a plurality of embodiment, shell speculum 230 can be for example to be rotated into roughly oval surface, to be rotated into roughly spherical surface, or is rotated at least a portion of the shape on general toroidal surface.In a plurality of embodiment, shell speculum 230 has can be to the light of for example wavelength of infrared light, visible light, bandwidth, special coloured light, or the coating transmitted of the predetermined portions of the Spectrum of Electromagnetic Radiation of their combination.

In one embodiment, shell speculum 230 can comprise the first order speculum 236 with primary optic axis 238, and first focus 232 may be the focus of first order speculum 236.Shell speculum 230 can also comprise having second optical axis 242, be positioned in and first order speculum 236 second level speculum 240 of symmetric position roughly, thereby makes primary optic axis 238 and second optical axis 242 roughly coaxial.In one embodiment, second focus 234 is focuses of second level speculum 240.In one embodiment, light reflects to second level speculum 240 from first order speculum 236, and roughly assembles at second focus, 234 places.In a plurality of embodiment, first order speculum 234 and second level speculum 240 each freedom for example are rotated into oval surface roughly or are rotated into roughly that at least a portion of the shape of parabolic surface constitutes.

In one embodiment, first order speculum 236 can be to be rotated into roughly at least a portion of oval surface, and second level speculum 240 can be to be rotated into roughly at least a portion of hyperbolic surface.In one embodiment, first order speculum 236 can be to be rotated into roughly at least a portion of hyperbolic surface, and second level speculum 240 can be to be rotated into roughly at least a portion of oval surface.

Electromagnetic radiation source 237 can be arranged to be close to first focus 232 of shell reflector 230, so that emission light, light reflects from shell reflector 230, and roughly assembles at second focus, 234 places.In one embodiment, electromagnetic radiation source 237 can be an arc lamp.In a plurality of embodiment, arc lamp can be the lamp of xenon lamp, metal halid lamp, ultrahigh pressure mercury lamp, high-intensity gas discharge lamp or mercury lamp for example.In a plurality of embodiment, electromagnetic radiation source 237 can be Halogen lamp LED and incandescent lamp.In one embodiment, low distribution speculum 102 and high distribution speculum 124 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.In optional embodiment, the input surface 180 of input photoconductive tube 178 or the input surface 202 of polarization reduction apparatus 200 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.

In one embodiment, can also comprise the retro-reflection mirror 244 that can be arranged in source 237 sides relative based on the projection arrangement 100 of photoconductive tube with shell speculum 230.In one embodiment, retro-reflection mirror 244 can be spherical retro-reflection mirror 244.In a plurality of embodiment, retro-reflection mirror 244 has the coating that the predetermined portions to the Spectrum of Electromagnetic Radiation of the light of for example wavelength of infrared light, visible light, bandwidth, special coloured light and their combination transmits.

In one embodiment, can comprise the image projection device 246 that is arranged to be close to outbound course 112, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength are roughly collected based on the projection arrangement 100 of photoconductive tube.In a plurality of embodiment, image projection device 246 can be LCOS image device, dmd chip, or the LCD panel of transmission.

Fig. 4 and Fig. 5 show an alternative embodiment of the invention, and wherein, three LCD panels form image three-colo(u)r.Image three-colo(u)r is projected on the screen respectively by the projecting lens of three separation.The white light of input enters low speculum 348, and in low speculum 348, first kind of color is reflected to LCD3, and image is projected on the screen by low projecting lens 378.The second kind of light with the third color that is not reflected through low speculum 348 will continue the channeling conduct by LG2, reflected by intermediate mirrors 352 then, in intermediate mirrors 352, second kind of color LCD2 that will be reflected and lead, and be projected on the screen by middle projecting lens 380.The third remaining color continues to be reflected by high reflection mirror 356 then by the LG1 channeling conduct, then through LCD1, and finally is projected on the screen by high projecting lens 382.Lens and LCD panel are arranged like this,, make whole three images approximate match on screen that is, thereby form color image.

Especially, in a second embodiment, as shown in Figure 4 and Figure 5, the low speculum 348 that can be included on the low direction 350 based on the projection arrangement 300 of photoconductive tube that light 104 to the low band of wavelength roughly reflects and on outbound course 312, the light 108 of the light 106 of the medium wave band of wavelength and high band roughly be transmitted.In a plurality of embodiment, low speculum 348 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance or speculum.In one embodiment, can comprise based on the projection arrangement 300 of photoconductive tube and being arranged on the low direction 350 so that the low projecting lens 378 that the light 104 of the low band of wavelength is collected and focused on.

Intermediate mirrors 352 can receive the light 108 of the medium wave band of wavelength and the light 110 of high band, and roughly reflect at third side's light 108 to the medium wave band of wavelength on 354, and the light 110 to the high band of wavelength roughly transmits on outbound course 312.In a plurality of embodiment, intermediate mirrors 352 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance or speculum.Middle projecting lens 380 can be disposed in the third side on 354, so that the light 108 of the medium wave band of wavelength is collected and focused on.

In one embodiment, projection arrangement 100 based on photoconductive tube can comprise initial light conduit 384, so that to receiving, and the light 110 of the light 108 of the medium wave band of wavelength and high band roughly is transferred to intermediate mirrors 352 from the light 108 of the medium wave band of the wavelength of low speculum 348 and the light 110 of high band.In a plurality of embodiment, initial light conduit 384 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, initial light conduit 384 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

High reflection mirror 356 can receive the light 110 of the high band of wavelength, and the light 110 to the high band of wavelength roughly reflects on high direction 358.In a plurality of embodiment, high reflection mirror 356 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.High projecting lens 382 can be disposed on the high direction 358, so that the light 110 of the high band of wavelength is collected and focused on.

In one embodiment, can comprise final photoconductive tube 386,, and the light 110 of the high band of wavelength roughly is transferred to high reflection mirror 356 so that the light 110 from the high band of the wavelength of intermediate mirrors 352 is received based on the projection arrangement 100 of photoconductive tube.In a plurality of embodiment, final photoconductive tube 386 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, final photoconductive tube 386 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

In one embodiment, as shown in Figure 5, can comprise input photoconductive tube 178 with input surface 180 and output surface 182 based on the projection arrangement 100 of photoconductive tube.Output surface 182 can be arranged to roughly be close to low speculum 348.Input photoconductive tube 178 can receive light at surperficial 180 places of input, and at output surface 182 places wide causing is transferred to low speculum 348.

In another embodiment, the projection arrangement 300 based on photoconductive tube can also comprise polarization reduction apparatus 200.Polarization reduction apparatus 200 can be arranged to roughly be close to low speculum 348.Polarization reduction apparatus 200 can roughly receive non-polarized light at surperficial 202 places of input, and at output surface 204 places useful polarised light 206 roughly is transferred to low speculum 348.

In this embodiment, the output surface 204 of polarization reduction apparatus 200 can be arranged to roughly be close to input photoconductive tube 178, input photoconductive tube 170 roughly receives polarised light at surperficial 180 places of input, and at output surface 182 places polarised light is transferred to low speculum 348.

In one embodiment, the projection arrangement 300 based on photoconductive tube can comprise the shell speculum 230 with first focus 232 and second focus 234.Electromagnetic radiation source 237 can be arranged to be close to first focus 232 of shell speculum 230, so that emission light, this light reflects from shell speculum 230, and roughly assembles at second focus, 234 places.In a plurality of embodiment, the input surface 180 of the input of polarization reduction apparatus 200 surface 202 or input photoconductive tube 178 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.In one embodiment, can also comprise the retro-reflection mirror 244 that can be arranged in source 237 sides relative based on the projection arrangement 300 of photoconductive tube with shell speculum 230.

Figure 13 shows other embodiment, and wherein, photoconductive tube, prism and optical splitter are used to form the color system of projection arrangement.In Figure 13 A, the white light of input incides optical splitter, and here, red light is transferred to the R-image device.Green light and blue light are reflected, and transmission is through photoconductive tube and be rotated 90 °.Green light and blue light are continued separately in second optical splitter, thereby make green light use the path of separating with blue light.Green light is reflected to the G-image device.Blue light continues to propagate into the B-image device through remaining photoconductive tube and prism.

Especially, in the 3rd embodiment, as shown in FIG. 13A, the low speculum 448 that can be included on the low direction 450 based on the projection arrangement 400 of photoconductive tube that light 104 to the low band of wavelength roughly transmits and on first peripheral direction 460, the light 110 of the light 108 of the medium wave band of wavelength and high band roughly be reflected.In a plurality of embodiment, low speculum 448 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.Low modulation device 422 can be disposed on the low direction 450, so that the light 104 of the low band of wavelength is roughly modulated.

The first peripheral speculum 462 can be arranged to and can reflect first peripheral direction 460, so that on second peripheral direction 464 light 108 of the medium wave band of wavelength and the light 110 of high band are roughly reflected.In a plurality of embodiment, the first peripheral speculum 462 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.

In one embodiment, projection arrangement 400 based on photoconductive tube can comprise low photoconductive tube 282, so that to receiving, and the light 110 of the light 108 of the medium wave band of wavelength and high band roughly is transferred to the first peripheral speculum 462 from the light 108 of the medium wave band of the wavelength of low speculum 448 and the light 110 of high band.In a plurality of embodiment, low photoconductive tube 282 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, low photoconductive tube 282 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

Intermediate mirrors 452 can be arranged to and can reflect second peripheral direction 464, the light 108 of the medium wave band of 452 pairs of wavelength of intermediate mirrors and the light 110 of high band receive, and the light 108 to the medium wave band of wavelength roughly reflects on outbound course 412, and the light 110 to the high band of wavelength roughly transmits on second peripheral direction 464.In a plurality of embodiment, intermediate mirrors 452 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.Middle modulator 438 can be disposed on the outbound course 412, so that the light 108 of the medium wave band of wavelength is roughly modulated.

In one embodiment, projection arrangement 400 based on photoconductive tube can comprise middle initial light conduit 284, so that to receiving, and the light 110 of the light 108 of the medium wave band of wavelength and high band roughly is transferred to intermediate mirrors 452 from the light 108 of the medium wave band of the wavelength of the first peripheral speculum 462 and the light 110 of high band.In a plurality of embodiment, middle initial light conduit 284 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, middle initial light conduit 284 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

The second peripheral speculum 468 can be arranged to and can reflect second peripheral direction 464, so that the light 110 to the high band of wavelength roughly reflects on the 3rd peripheral direction 466.In a plurality of embodiment, the second peripheral speculum 468 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.

In one embodiment, projection arrangement 400 based on photoconductive tube can comprise middle final photoconductive tube 286, so that the light 110 from the high band of the wavelength of intermediate mirrors 452 is received, and the light 110 of the high band of wavelength roughly is transferred to the second peripheral speculum 468.In a plurality of embodiment, middle final photoconductive tube 286 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, middle final photoconductive tube 286 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

High reflection mirror 456 can be arranged to and can reflect the 3rd peripheral direction 466, and the light 110 of the high band of 456 pairs of wavelength of high reflection mirror receives, and the light 110 to the high band of wavelength roughly reflects on high direction 458.In a plurality of embodiment, high reflection mirror 456 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.High modulation device 436 can be disposed on the high direction 458, so that the light 110 of the high band of wavelength is roughly modulated.

In one embodiment, projection arrangement 400 based on photoconductive tube can comprise high photoconductive tube 288, so that the light 110 from the high band of the wavelength of the second peripheral speculum 468 is received, and the light 110 of the high band of wavelength roughly is transferred to high reflection mirror 456.In a plurality of embodiment, high photoconductive tube 288 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, high photoconductive tube 288 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

Low facetted mirrors 440 can be on outbound course 412 roughly reflects the light 104 of the low band of wavelength, and the light 108 of the medium wave band of wavelength and the light 110 of high band are roughly transmitted.High facetted mirrors 442 can be on outbound course 412 roughly reflects the light of the high band of wavelength, and the light 106 of the low band of wavelength and the light 108 of medium wave band are roughly transmitted.

In a plurality of embodiment, low facetted mirrors 440 and high facetted mirrors 442 are formed combination X type prism 492.In one embodiment, can also comprise the projecting lens 478 that is arranged on the outbound course 412, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength are collected and focused on based on the projection arrangement 400 of photoconductive tube.

In one embodiment, projection arrangement 400 based on photoconductive tube can also comprise polarization reduction apparatus 200, polarization reduction apparatus 200 can be arranged to roughly be close to low speculum 448, polarization reduction apparatus 200 roughly receives non-polarized light at surperficial 202 places of input, and at output surface 204 places useful polarization 206 is transferred to low speculum 448.

In one embodiment, projection arrangement 400 based on photoconductive tube can comprise the input photoconductive tube 178 with input surface 180 and output surface 182, output surface 182 can be arranged to roughly be close to low speculum 448, input photoconductive tube 178 receives light at surperficial 180 places of input, and at output surface 182 places wide causing is transferred to low speculum 448.In another embodiment, input photoconductive tube 178 can be arranged to be close to the input surface 202 of polarization reduction apparatus 200, input photoconductive tube 178 roughly receives non-polarized light at surperficial 180 places of input, and at output surface 182 places non-polarized light is transferred to polarizing beam splitter 208.

In one embodiment, projection arrangement 400 based on photoconductive tube can comprise the shell speculum 230 with first focus 232 and second focus 234, electromagnetic radiation source 237 can be arranged to be close to first focus 232 of shell speculum 230, so that emission light, light reflects from shell speculum 230, and roughly assembles at second focus, 234 places.In one embodiment, can also comprise the retro-reflection mirror 244 that can be arranged in source 237 sides relative based on the projection arrangement 400 of photoconductive tube with shell speculum 230.In one embodiment, low speculum 448 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.In optional embodiment, the input surface 180 of input photoconductive tube 178 or the input surface 202 of polarization reduction apparatus 200 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.

In one embodiment, can comprise the image projection device 446 that is arranged to be close to outbound course 412, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength are roughly collected based on the projection arrangement 400 of photoconductive tube.In a plurality of embodiment, image projection device 446 can be LCOS image device, dmd chip, or the LCD panel of transmission.

In the above-described embodiments, utilize photoconductive tube and right-angle prism, the direction that light is propagated can half-twist, as shown in figure 10.The reflecting surface that is in the right-angle prism hypotenuse can not have coating.If reflecting surface does not have coating, reflection of light can be finished by complete internal reflection.In optional embodiment, the reflecting surface that is in the right-angle prism hypotenuse can use metal or insulator coating to cover.Air slots between input photoconductive tube 178, prism and the output photoconductive tube can also provide complete internal reflection for the light that is reflected.In order to reduce loss, the surface of each air slots both sides uses antireflective coating to cover usually.

Usually, the direction of propagation can also be changed and become to be different from other angles of 90 °.Figure 11 A shows an embodiment, and wherein, the angle between the assembly is the obtuse angle, that is, and and direction is changed greater than 90 °.Figure 11 B illustrates another embodiment, and wherein, the angle between the assembly is an acute angle, that is, and and direction is changed less than 90 °.In both cases, the size of prism is by carrying out crossover, and a Dove prism that obtains is divided into two obtains to input waveguide and output waveguide, as shown in two kinds of situations.To reflecting surface cover or do not cover depend on two between the photoconductive tube angle and waveguide in the numerical aperture of light.Similarly, the air slots between photoconductive tube and the prism can also be used to provide complete internal reflection.

According to the angle between input photoconductive tube and the output photoconductive tube, the numerical aperture of the light in each assembly will suffer restraints owing to the complete internal reflection of air slots circumferential surface.

The divergence that has for light is that (the airborne angle of divergence is 12 ° to F/2.4, the angle of divergence in the glass light conduit is 8 °) and the coefficient that has of photoconductive tube and prism be the system of 1.5 (critical angle is 41.8 °), output photoconductive tube 184 can be 33.8 ° from 90 ° of maximum angles that depart from out, and it is different from the critical angle and the angle of divergence.

Figure 12 shows another embodiment of projection arrangement, and wherein, distribution X type prism 190 is substituted by optical splitter and two prisms.The advantage of this system is that does not roughly interrupt in the path of the blue light between image device and projecting lens.What bring is to have increased more assembly.In this case, red light and the illumination of green light image device are with identical in the past.The light path that is used for blue light is changed.Because the plane of B-image device does not parallel with prism with other photoconductive tubes or is vertical, thus angled photoconductive tube and prism be used, as shown in the figure.In this case, photoconductive tube and the corresponding prism that tilts with an angle is used together.This angle also will be selected in the aforesaid working range.Compare with the primal system that has speculum and optical filter, also little to the requirement in space.

In another embodiment, do not illustrate in the drawings, photoconductive tube is until the numerical aperture of the light in the image device chip can be inequality with the acceptance angle of image device chip.Tapered light pipe can be placed in each image device chip place, thereby size and acceptance angle that the numerical aperture of aperture size and input light is converted to the image device chip are complementary.The assembly of these increases can bring flexibility for system designs.

In a preferred embodiment, light source is to be placed in the arc lamp that has tapered light pipe in the dual paraboloid mirror system, at output.The output of photoconductive tube and the input of this light conduit lighting system all are being complementary aspect size and the numerical aperture two.Polarizer can be added in the position of image device, is used for spatial modulation.

In another embodiment, the output of tapered light pipe can be directed to based on photoconductive tube, be used for otiose optical rotation is changed into useful polarization reduction apparatus.Then, the output of polarization reduction apparatus is imported in the light conduit lighting system.

In another embodiment, the elliptical reflecting mirror system is used, and the light of focusing here is imported in the input of light conduit lighting system.In another embodiment, the light of focusing is imported in the input based on the polarization reduction apparatus of photoconductive tube, as mentioned above, makes the polarised light of output be imported in the light conduit lighting system.

In another embodiment, the parabolic reflector mirror system is used with fly lens and polarizing beam splitter array, makes the luminous point that focus on, polarization of the process with suitable size and numerical aperture be directed to the input of light conduit lighting system.

In another embodiment, shown in Figure 13 B, incident light enters from the direction with the direction approximate vertical shown in Figure 13 A.Especially, in the 4th embodiment, shown in Figure 13 B, the low speculum 548 that can be included on first peripheral direction 560 that light 104 to the low band of wavelength roughly transmits and on second peripheral direction 564, the light 110 of the light 108 of the medium wave band of wavelength and high band roughly be reflected based on the projection arrangement 500 of photoconductive tube.In a plurality of embodiment, low speculum 548 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.

The first peripheral speculum 562 can be arranged to and can reflect second peripheral direction 564, so that on the 3rd peripheral direction 550 light 108 of the medium wave band of wavelength and the light 110 of high band are roughly reflected.In a plurality of embodiment, the first peripheral speculum 562 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.Low modulation device 522 can be disposed on the low direction 560, so that the light 104 of the low band of wavelength is roughly modulated.

In one embodiment, projection arrangement 500 based on photoconductive tube can comprise low photoconductive tube 290, so that to receiving, and the light 110 of the light 108 of the medium wave band of wavelength and high band roughly is transferred to the first peripheral speculum 562 from the light 108 of the medium wave band of the wavelength of low speculum 548 and the light 110 of high band.In a plurality of embodiment, low photoconductive tube 290 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, low photoconductive tube 290 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

Intermediate mirrors 553 can be arranged to and can reflect the 3rd peripheral direction 550, the light 108 of the medium wave band of 553 pairs of wavelength of intermediate mirrors and the light 110 of high band receive, and the light 108 to medium wave band roughly reflects on outbound course 512, and the light 110 to the high band of wavelength roughly transmits on the 3rd peripheral direction 550.In a plurality of embodiment, intermediate mirrors 552 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.Middle modulator 538 can be disposed on the outbound course 512, so that the light 108 of the medium wave band of wavelength is roughly modulated.

In one embodiment, projection arrangement 500 based on photoconductive tube can comprise middle initial light conduit 292, so that to receiving, and the light 110 of the light 108 of the medium wave band of wavelength and high band roughly is transferred to intermediate mirrors 552 from the light 108 of the medium wave band of the wavelength of the first peripheral speculum 562 and the light 110 of high band.In a plurality of embodiment, middle initial light conduit 292 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, middle initial light conduit 292 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

The second peripheral speculum 568 can be arranged to and can reflect the 3rd peripheral direction 550, so that roughly reflect at light 110 that encloses all round on the direction 566 high band of wavelength.In a plurality of embodiment, the second peripheral speculum 568 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.

In one embodiment, projection arrangement 500 based on photoconductive tube can comprise middle final photoconductive tube 294, so that the light 110 from the high band of the wavelength of intermediate mirrors 552 is received, and the light 110 of the high band of wavelength roughly is transferred to the second peripheral speculum 568.In a plurality of embodiment, middle final photoconductive tube 294 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, middle final photoconductive tube 294 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

High reflection mirror 556 can be arranged to and can reflect the 3rd peripheral direction 566, and the light 110 of the high band of 566 pairs of wavelength of high reflection mirror receives, and the light 110 to the high band of wavelength roughly reflects on high direction 558.In a plurality of embodiment, high reflection mirror 556 can be a prism, acute angle, right angle or obtuse angle prism, mismatch impedance, or speculum.High modulation device 536 can be disposed on the high direction 558, so that the light 110 of the high band of wavelength is roughly modulated.

In one embodiment, projection arrangement 500 based on photoconductive tube can comprise high photoconductive tube 296, so that the light 110 from the high band of the wavelength of the second peripheral speculum 568 is received, and the light 110 of the high band of wavelength roughly is transferred to high reflection mirror 556.In a plurality of embodiment, high photoconductive tube 296 can be made by for example material of quartz, glass, plastics or acrylic resin.In a plurality of embodiment, high photoconductive tube 296 can be straight photoconductive tube or tapered light pipe, shown in Figure 20 A-20C.

Low facetted mirrors 540 can be on outbound course 512 roughly reflects the light 104 of the low band of wavelength, and the light 108 of the medium wave band of wavelength and the light 110 of high band are roughly transmitted.High facetted mirrors 542 can be on outbound course 512 roughly reflects the light 110 of the high band of wavelength, and the light 106 of the low band of wavelength and the light 108 of medium wave band are roughly transmitted.In one embodiment, low facetted mirrors 540 and high facetted mirrors 542 are formed combination X type prism 592.In one embodiment, can also comprise the projecting lens 578 that is arranged on the outbound course 512, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength are collected and focused on based on the projection arrangement 500 of photoconductive tube.

In one embodiment, the projection arrangement 500 based on photoconductive tube can also comprise polarization reduction apparatus 200.Polarization reduction apparatus 200 can be arranged to roughly be close to low speculum 548, and polarization reduction apparatus 200 roughly receives non-polarized light at surperficial 202 places of input, and at output surface 204 places useful polarised light 206 roughly is transferred to low speculum 548.

Especially, in one embodiment, can comprise input photoconductive tube 178 with input surface 180 and output surface 182 based on the projection arrangement 500 of photoconductive tube.Output surface 182 can be arranged to roughly be close to low speculum 548.Input photoconductive tube 178 can receive light at surperficial 180 places of input, and at output surface 182 places wide causing is transferred to low speculum 548.In another embodiment, input photoconductive tube 178 can be arranged to be close to the input surface 202 of polarization reduction apparatus, input photoconductive tube 178 roughly receives non-polarized light at surperficial 180 places of input, and at output surface 182 places non-polarized light is transferred to polarizing beam splitter 208.

In one embodiment, can comprise for example lens 584 of projecting lens, be arranged to be close to outbound course 512, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength is roughly focused on based on the projection arrangement 500 of photoconductive tube.In a plurality of embodiment, the shape of lens 584 can be flat, protruding, recessed, the annular with sphere.In a plurality of embodiment, lens 584 can be made by for example material of quartz, glass, plastics or acrylic resin.

In another embodiment, have the output photoconductive tube 184 of importing surface 186 and output surface 188 and can be arranged to be close to outbound course 512.In this embodiment, output photoconductive tube 184 receives light at surperficial 186 places of input, and at output surface 188 places light is roughly transmitted.

In one embodiment, the projection arrangement 500 based on photoconductive tube can comprise the shell speculum 230 with first focus 232 and second focus 234.Electromagnetic radiation source 237 can be arranged to be close to first focus 232 of shell speculum, so that emission light, light reflects from shell speculum 230, and roughly assembles at second focus, 234 places.In one embodiment, can also comprise the retro-reflection mirror 244 that can be arranged in source 237 sides relative based on the projection arrangement 500 of photoconductive tube with shell speculum 230.In one embodiment, low speculum 548 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.In optional embodiment, the input surface 180 of input photoconductive tube 178 or the input surface 202 of polarization reduction apparatus 200 can be arranged to be close to second focus 234, so that whole light are roughly collected and transmitted.

In one embodiment, can comprise the image projection device 246 that can be arranged to be close to outbound course 512, so that light 106, the light 108 of medium wave band and the light 110 of high band of the low band of wavelength are roughly collected based on the projection arrangement 500 of photoconductive tube.In a plurality of embodiment, image projection device 246 can be LCOS image device, dmd chip, or the LCD panel of transmission.

Figure 14 shows a transparent schematic diagram, here is used to conventional projecting apparatus is thrown light on based on the illumination of photoconductive tube.Lamp is positioned in and has in the dual paraboloid mirror system of exporting photoconductive tube.Then, output light is imported in the polarization reduction pcs system, and light is being polarized here.Then, output is directed to the color-separated system, and image device is roughly thrown light on.Figure 15-Figure 18 shows multiple structure, can set wherein illuminator and photoconductive tube.

Usually, except utilizing the dual paraboloid mirror system, comprise that the other system that has or do not have the elliptical reflector of exporting photoconductive tube, has condenser lens and have or do not have a parabolic mirror of exporting photoconductive tube also can be used.In addition, the unshowned illuminator that has the parabolic reflector that contains fly lens and polarizing beam splitter array also can be used.The output of whole system is focused the input based on the color-separated system of photoconductive tube.

In the 5th embodiment, shown in Figure 24 A, can be included in the polarizing beam splitter 722 that surperficial 724 places of input roughly receive non-polarized light based on the projection arrangement 720 of photoconductive tube.Polarizing beam splitter 722 first luminous energy 726 to useful polarization on outbound course 728 transmits, and second luminous energy 730 to otiose polarization reflects on reduction direction 732.Wave plate 734 can be disposed on the reduction direction 732, so that second luminous energy 730 is received, and the major part of its polarization changed becomes useful polarization.Reduction speculum 736 can be arranged to and can reflect reduction direction 732, so that on outbound course 728 second luminous energy 730 is reflected.Modulator 738 can be disposed on the outbound course 728, so that first luminous energy 726 and second luminous energy 730 are roughly modulated.Initial light conduit 740 can be disposed on the outbound course 728, so that to from first luminous energy 726 of polarizing beam splitter with come second luminous energy 730 of autoreduction speculum 736 to receive, and first luminous energy and second luminous energy is transferred to modulator 738.

In one embodiment, can comprise the lens 742 that are arranged to be close to outbound course 728 based on the projection arrangement 720 of photoconductive tube, so that first luminous energy 726 and second luminous energy 730 are roughly focused on.Output photoconductive tube 744 with input surface 746 and output surface 748 can be arranged to be close to outbound course 728.Output photoconductive tube 744 can receive first luminous energy 726 and second luminous energy 730 at surperficial 746 places of input, and at output surface 748 places first luminous energy 726 and second luminous energy 730 is roughly transmitted.Projecting lens 768 can be disposed on the outbound course 728, so that first luminous energy 726 and second luminous energy 730 are collected and focused on.In one embodiment, projection arrangement 720 based on photoconductive tube can comprise the input photoconductive tube 750 with input surface 752 and output surface 754, output surface 754 is arranged to be close to the input surface 756 of polarizing beam splitter 722, input photoconductive tube 750 roughly receives non-polarized light at surperficial 752 places of input, and at output surface 754 places non-polarized light is transferred to polarizing beam splitter 722.In one embodiment, shown in Figure 24 B, can comprise the colour wheel 758 that is arranged to be close to outbound course 728, so that roughly provide continuous color for first luminous energy 726 and second luminous energy 730 based on the projection arrangement 720 of photoconductive tube.In one embodiment, shown in Figure 24 C, can comprise the rolling color portion 760 that is arranged to be close to outbound course 728, so that roughly provide color to show for first luminous energy 726 and second luminous energy 730 based on the projection arrangement 720 of photoconductive tube.

The front is described principle of the present invention, embodiment and mode of operation.But, can not think that the present invention is restricted to specific embodiments described above, exemplary because they should be considered to, rather than restrictive.Under the prerequisite that does not deviate from spirit of the present invention, those skilled in the art can fully recognize these embodiment are changed.

Though the preferred embodiments of the present invention are illustrated, should be understood that it just is suggested in the mode of example, not restriction in the above.Therefore, scope and spirit of the present invention should not be subjected to the restriction of above-mentioned exemplary embodiment.

Though the present invention is introduced in the above in detail,, the present invention does not wish to be restricted to described specific embodiments.Obviously, under the prerequisite that does not deviate from spirit of the present invention, those skilled in the art can carry out multiple application, modifications and changes to the specific embodiments that is described here.

Obviously, under the guidance of above-mentioned technology, numerous modifications and variations of the present invention are possible.Therefore can understand like this, that is, the present invention can be put into practice, rather than is only here clearly described.

Claims

1. projection arrangement based on photoconductive tube comprises:

The low distribution speculum that on low inceptive direction, the light of the low band of wavelength is roughly reflected and on outbound course, the light of the medium wave band of wavelength and high band is roughly transmitted;

Be arranged to the low initial reflection mirror that can reflect described low inceptive direction, described low initial reflection mirror is upwards reflecting the described light of the described low band of wavelength with the low third side of described outbound course almost parallel;

Be arranged in the low initial light conduit between described low distribution speculum and the described low initial reflection mirror;

Being arranged to can be to described low third side to the low final speculum that reflects, described low final speculum with the roughly diametical low final direction of described low inceptive direction on the described light of the described low band of wavelength is reflected;

Be arranged in the low final photoconductive tube between described low initial reflection mirror and the described low final speculum;

Be arranged to low modulation device that the described light of the described low band of wavelength is roughly modulated;

At the height distribution speculum that on the high inceptive direction the described light of the described high band of wavelength is roughly reflected and on described outbound course roughly, the described light of the described low band of wavelength and described medium wave band is roughly transmitted;

Be arranged to the high initial reflection mirror that can reflect described high inceptive direction, described high initial reflection mirror and the senior middle school of described outbound course almost parallel between on the direction the described light to the described high band of wavelength reflect;

Be arranged in the high initial light conduit between described high distribution speculum and the described high initial reflection mirror;

Be arranged to the high final speculum that can reflect direction between described senior middle school, the final speculum of described height with the final direction of the roughly diametical height of described high inceptive direction on the described light of the described high band of wavelength is reflected;

Be arranged in the high final photoconductive tube between described high initial reflection mirror and the final speculum of described height;

Be arranged to high modulation device that the described light of the described high band of wavelength is roughly modulated; And

Be arranged on the described outbound course so that the middle modulator that the described light of the described medium wave band of wavelength is roughly modulated.

2. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

The low facetted mirrors that on described outbound course, the described light of the described low band of wavelength is roughly reflected and the described light of the described medium wave band of wavelength and described high band is roughly transmitted; And

The high facetted mirrors that on described outbound course, the light of the described high band of wavelength is roughly reflected and the light of the described low band of wavelength and described medium wave band is roughly transmitted.

3. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

Low-middle distribution the speculum that on low-middle inceptive direction, the light of the low-medium wave band of wavelength is roughly reflected and on outbound course, the described light of the light of the height-medium wave band of wavelength and the described low band of wavelength, described medium wave band and described high band is roughly transmitted;

Be arranged to can to described low-low-middle initial reflection mirror that middle inceptive direction reflects, described low-middle initial reflection mirror upwards reflecting the described light of the described low-medium wave band of wavelength with the low-middle third side of described outbound course almost parallel;

Be arranged in described low-middle distribution speculum and described low-low-middle initial light conduit between the middle initial reflection mirror;

Be arranged to can to described low-middle third side to reflect low-in final speculum, described low-in final speculum with described low-middle inceptive direction roughly diametical low-on the final direction the described light to the described low-medium wave band of wavelength reflect;

Be arranged in described low-middle initial reflection mirror and described low-between the final speculum low-in final photoconductive tube;

Be arranged to low-middle modulator that the described light of the described low-medium wave band of wavelength is roughly modulated;

At the height-middle distribution speculum that on the height-middle inceptive direction the described light of the described height-medium wave band of wavelength is roughly reflected and on described outbound course roughly, the described light of the described light of the described low-medium wave band of wavelength and the described low band of wavelength, described medium wave band and described high band is roughly transmitted;

Being arranged to can be to height-middle initial reflection mirror that described height-middle inceptive direction reflects, and described height-middle initial reflection mirror is upwards reflecting the described light of the described height-medium wave band of wavelength with the height-middle third side of described outbound course almost parallel;

Be arranged in the height-middle initial light conduit between described height-middle distribution speculum and described height-middle initial reflection mirror;

Be arranged to can to described height-middle third side to the height that reflects-in final speculum, described height-in final speculum with the roughly diametical height of described height-middle inceptive direction-on the final direction the described light to the described height-medium wave band of wavelength reflect; And

Be arranged in described height-middle initial reflection mirror and described height-between the final speculum height-in final photoconductive tube;

Be arranged to height-middle modulator that the described light of the described height-medium wave band of wavelength is roughly modulated.

4. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

At the low-middle facetted mirrors that on the described outbound course the described light of the described low-medium wave band of wavelength is roughly reflected and on described outbound course, the described light of the described low band of wavelength, described medium wave band, described high band and described height-medium wave band is roughly transmitted; And

On the described outbound course light of the described height-medium wave band of wavelength roughly reflected and on described outbound course to the described low band of wavelength, described medium wave band, described high band and described low-height-middle facetted mirrors that the described light of medium wave band roughly transmits.

5. the projection arrangement based on photoconductive tube according to claim 1 also comprises being arranged on the described outbound course so that the projecting lens that the described light of the described low band of wavelength, described medium wave band and described high band is collected and focused on.

6. the projection arrangement based on photoconductive tube according to claim 1, wherein, described low distribution speculum and described high distribution speculum are formed X type prism.

7. the projection arrangement based on photoconductive tube according to claim 2, wherein, described low facetted mirrors and described high facetted mirrors are formed X type prism.

8. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

Input photoconductive tube with input surface and output surface, described output surface is arranged to roughly be close to described low distribution speculum and described high distribution speculum, described input photoconductive tube receives light in described input surface, and at described output surface place described wide causing is transferred to described low distribution speculum and described high distribution speculum.

9. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

Be arranged to be close to described outbound course so that the lens that the described light of the described low band of wavelength, described medium wave band and described high band is roughly focused on;

Have and be arranged to be close to the input surface of described outbound course and the output photoconductive tube of output surface, described output photoconductive tube receives described light in described input surface, and at described output surface place described light is roughly transmitted; And

Be arranged on the described outbound course so that the projecting lens that the described light of the described low band of wavelength, described medium wave band and described high band is collected and focused on.

10. the projection arrangement based on photoconductive tube according to claim 1, also comprise the polarization reduction apparatus, described polarization reduction apparatus is arranged to roughly be close to described low distribution speculum and described high distribution speculum, described polarization reduction apparatus roughly receives non-polarized light in the input surface, and at the output surface place useful polarised light roughly is transferred to described low distribution speculum and described high distribution speculum.

11. the projection arrangement based on photoconductive tube according to claim 10, wherein, described polarization reduction apparatus comprises:

On the described outbound course useful polarised light transmitted and with first orthogonal direction of described output approximate vertical on polarizing beam splitter that otiose polarised light is reflected;

Be arranged to the initial reflection mirror that can reflect described first orthogonal direction, described initial reflection mirror with second orthogonal direction of described outbound course and the described first orthogonal direction approximate vertical on described otiose polarised light is reflected; And

Be arranged to the final speculum that can reflect described second orthogonal direction, described final speculum reflects described otiose polarised light in described output;

Wherein, described otiose polarised light is roughly rotated by described initial reflection mirror and described final speculum becomes described useful polarised light.

12. the projection arrangement based on photoconductive tube according to claim 10 also comprises:

Be arranged to first output reflector that can reflect described output, described first output reflector reflects described useful polarised light on described second orthogonal direction; And

Be arranged to second output reflector that can reflect described second orthogonal direction, described second output reflector reflects described useful polarised light in described output.

13. the projection arrangement based on photoconductive tube according to claim 10 also comprises:

Input photoconductive tube with input surface and output surface, described output surface is arranged to be close to the described input surface of described polarization reduction apparatus, described input photoconductive tube roughly receives non-polarized light in described input surface, and at described output surface place described non-polarized light is transferred to described polarizing beam splitter.

14. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

Shell speculum with first focus and second focus;

Described first focus that is arranged to be close to described shell speculum is so that the electromagnetic radiation source of emission light, and the light of being launched is from described shell mirror reflects, and roughly assembles at the described second focus place;

Wherein, described low distribution speculum and described high distribution speculum are arranged to be close to described second focus, so that whole described light is roughly collected and transmitted.

15. the projection arrangement based on photoconductive tube according to claim 14, wherein, described shell speculum comprises the first order speculum with primary optic axis, and described first focus is the focus of described first order speculum, and described shell speculum also comprises:

Second level speculum with second optical axis, it roughly is positioned to and described first order speculum symmetry, thereby makes described primary optic axis roughly coaxial with described second optical axis, and wherein, described second focus is the focus of described second level speculum; And

Wherein, described light, and is roughly assembled at the described second focus place to described second level speculum from described first order mirror reflects.

16. the projection arrangement based on photoconductive tube according to claim 14 also comprises the retro-reflection mirror that is arranged in the described source face relative with described shell speculum.

17. the projection arrangement based on photoconductive tube according to claim 1 also comprises:

Be arranged to be close to described outbound course so that the image projection device that the described light of the described low band of wavelength, described medium wave band and described high band is roughly collected.

18. the projection arrangement based on photoconductive tube comprises:

The low speculum that on low direction, the light of the low band of wavelength is roughly reflected and on outbound course, the light of the medium wave band of wavelength and high band is roughly transmitted;

The intermediate mirrors that the described light of the described medium wave band of wavelength and described high band is received and upwards the described light of the described medium wave band of wavelength roughly reflected and on described outbound course the described light of the described high band of wavelength is roughly transmitted the third side;

Be arranged in the initial light conduit between described low speculum and the described intermediate mirrors;

The high reflection mirror that the described light of the described high band of wavelength is received and on high direction the described light of the described high band of wavelength roughly reflected; And

Be arranged in the final photoconductive tube between described intermediate mirrors and the described high reflection mirror.

19. the projection arrangement based on photoconductive tube according to claim 18 also comprises:

Be arranged on the described low direction so that the low projecting lens that the described light of the described low band of wavelength is collected and focused on;

Be arranged in described third side upwards so that the middle projecting lens that the described light of the described medium wave band of wavelength is collected and focused on; And

Be arranged on the described high direction so that the high projecting lens that the described light of the described high band of wavelength is collected and focused on.

20. the projection arrangement based on photoconductive tube according to claim 18 also comprises:

Input photoconductive tube with input surface and output surface, described output surface is arranged to be close to the input surface of described low speculum, described input photoconductive tube roughly receives light in described input surface, and at described output surface place described wide causing is transferred to described low speculum.

21. the projection arrangement based on photoconductive tube according to claim 18, also comprise the polarization reduction apparatus, described polarization reduction apparatus is arranged to roughly be close to described low speculum, described polarization reduction apparatus roughly receives non-polarized light in the input surface, and at the output surface place useful polarised light roughly is transferred to described low speculum.

22. the projection arrangement based on photoconductive tube according to claim 21, wherein, described polarization reduction apparatus comprises:

On the described outbound course useful polarised light transmitted and with first orthogonal direction of described outbound course approximate vertical on polarizing beam splitter that otiose polarised light is reflected;

Be arranged to the initial reflection mirror that can reflect described first orthogonal direction, described initial reflection mirror with second orthogonal direction of described outbound course and the described first orthogonal direction approximate vertical on otiose polarised light is reflected; And

Be arranged to the final speculum that can reflect described second orthogonal direction, described final speculum reflects described otiose polarised light on described outbound course;

23. the projection arrangement based on photoconductive tube according to claim 21 also comprises:

Be arranged to first output reflector that can reflect described outbound course, described first output reflector reflects described useful polarised light on described second orthogonal direction; And

Be arranged to second output reflector that can reflect described second orthogonal direction, described second output reflector reflects described useful polarised light on described outbound course.

24. the projection arrangement based on photoconductive tube according to claim 21 also comprises:

25. the projection arrangement based on photoconductive tube according to claim 18 also comprises:

Shell speculum with first focus and second focus;

Wherein, described input surface is arranged to be close to described second focus, so that whole described light is roughly collected and transmitted.

26. the projection arrangement based on photoconductive tube according to claim 25, wherein, described shell speculum comprises the first order speculum with primary optic axis, and described first focus is the focus of described first order speculum, and described shell speculum also comprises:

27. the projection arrangement based on photoconductive tube according to claim 25 also comprises the retro-reflection mirror that is arranged in the described source face relative with described shell speculum.

28. the projection arrangement based on photoconductive tube comprises:

The low speculum that on low direction, the light of the low band of wavelength is roughly transmitted and on first peripheral direction, the light of the medium wave band of wavelength and high band is roughly reflected;

Be arranged on the described low direction so that the low modulation device that the described light of the described low band of wavelength is roughly modulated;

Be arranged to the first peripheral speculum that can reflect described first peripheral direction, the described first peripheral speculum roughly reflects the described medium wave band of wavelength and the described light of described high band on second peripheral direction;

Be arranged in the low photoconductive tube between the described low speculum and the described first peripheral speculum;

Be arranged to the intermediate mirrors that can reflect described first peripheral direction, described intermediate mirrors receives the described medium wave band of wavelength and the described light of described high band, and the described light to the described medium wave band of wavelength roughly reflects on outbound course, and the described light to the described high band of wavelength roughly transmits on the 3rd peripheral direction;

Be arranged in the middle initial light conduit between the described first peripheral speculum and the described intermediate mirrors;

Be arranged on the described outbound course so that the middle modulator that the described light of the described medium wave band of wavelength is roughly modulated;

Be arranged to the second peripheral speculum that can reflect described the 3rd peripheral direction, the described second peripheral speculum roughly reflects at the described light that encloses all round on the direction the described high band of wavelength;

Be arranged in the final photoconductive tube in centre between the described intermediate mirrors and the described second peripheral speculum;

Be arranged to and can enclose the high reflection mirror that direction reflects all round to described, described high reflection mirror receives the described light of the described high band of wavelength, and the described light to the described high band of wavelength roughly reflects on high direction;

Be arranged in the high photoconductive tube between the described second peripheral speculum and the described high reflection mirror;

Be arranged on the described high direction so that the high modulation device that the described light of the described high band of wavelength is roughly modulated;

29. the projection arrangement based on photoconductive tube according to claim 28 also comprises being arranged on the described outbound course so that the projecting lens that the described light of the described low band of wavelength, described medium wave band and described high band is collected and focused on.

30. the projection arrangement based on photoconductive tube according to claim 28, wherein, described low facetted mirrors and described high facetted mirrors are formed X type prism.

31. the projection arrangement based on photoconductive tube according to claim 28, also comprise the polarization reduction apparatus, described polarization reduction apparatus is arranged to roughly be close to described low speculum, described polarization reduction apparatus roughly receives non-polarized light in the input surface, and at the output surface place useful polarised light roughly is transferred to described low speculum.

32. the projection arrangement based on photoconductive tube according to claim 31, wherein, described polarization reduction apparatus comprises:

On described first peripheral direction useful polarised light transmitted and with first orthogonal direction of the described first peripheral direction approximate vertical on polarizing beam splitter that otiose polarised light is reflected;

Be arranged to the initial reflection mirror that can reflect described first orthogonal direction, described initial reflection mirror with second orthogonal direction of described first peripheral direction and the described first orthogonal direction approximate vertical on described otiose polarised light is reflected; And

Be arranged to the final speculum that can reflect described second orthogonal direction, described final speculum reflects described otiose polarised light on described first peripheral direction;

Wherein, described otiose polarised light is roughly rotated by described initial reflection mirror and described final speculum becomes useful polarised light.

33. the projection arrangement based on photoconductive tube according to claim 31, also comprise: be arranged to first output reflector that can reflect described first peripheral direction, described first output reflector reflects described useful polarised light on described second orthogonal direction; And

Be arranged to second output reflector that can reflect described second orthogonal direction, described second output reflector reflects described useful polarised light on described first peripheral direction.

34. the projection arrangement based on photoconductive tube according to claim 31 also comprises:

35. the projection arrangement based on photoconductive tube according to claim 28 also comprises:

Shell speculum with first focus and second focus;

Wherein, described low speculum is arranged to be close to described second focus, so that whole described light is roughly collected and transmitted.

36. the projection arrangement based on photoconductive tube according to claim 35 also comprises the retro-reflection mirror that is arranged in the described source face relative with described shell speculum.

37. the projection arrangement based on photoconductive tube according to claim 28 also comprises:

Be arranged to be close to the image projection device of described outbound course, so that the described light of the described low band of wavelength, described medium wave band and described high band is roughly collected.

38. according to the described projection arrangement based on photoconductive tube of claim 37, wherein, described image projection device is selected from following group, comprising:

The LCOS image device,

Dmd chip, and

The LCD panel of transmission.

39. the projection arrangement based on photoconductive tube comprises:

At the low speculum that on first peripheral direction light of the low band of wavelength is roughly transmitted and on second peripheral direction, the light of the medium wave band of wavelength and high band is roughly reflected;

Be arranged to the first peripheral speculum that can reflect described first peripheral direction, the described first peripheral speculum described light to the described low band of wavelength on low direction roughly reflects;

Be arranged to the intermediate mirrors that can reflect described second peripheral direction, described intermediate mirrors receives the described medium wave band of wavelength and the described light of described high band, and the described light to the described medium wave band of wavelength roughly reflects on outbound course, and the described light to the described high band of wavelength roughly transmits on described second peripheral direction;

Be arranged to the second peripheral speculum that can reflect described second peripheral direction, the described second peripheral speculum described light to the described high band of wavelength on the 3rd peripheral direction roughly reflects;

Be arranged to the high reflection mirror that can reflect described the 3rd peripheral direction, described high reflection mirror receives the described light of the described high band of wavelength, and the described light to the described high band of wavelength roughly reflects on high direction;

The high facetted mirrors that on described outbound course, the light of the described high band of wavelength is roughly reflected and the light of the described low band of wavelength and described high band is roughly transmitted.

40., also comprise being arranged on the described outbound course so that the projecting lens that the described light of the described low band of wavelength, described medium wave band and described high band is collected and focused on according to the described projection arrangement of claim 39 based on photoconductive tube.

41. according to the described projection arrangement based on photoconductive tube of claim 39, wherein, described low facetted mirrors and described high facetted mirrors are formed X type prism.

42. according to the described projection arrangement of claim 39 based on photoconductive tube, also comprise the polarization reduction apparatus, described polarization reduction apparatus is arranged to roughly be close to described low speculum, described polarization reduction apparatus roughly receives non-polarized light in the input surface, and at the output surface place useful polarised light roughly is transferred to described low speculum.

43. according to the described projection arrangement based on photoconductive tube of claim 42, wherein, described polarization reduction apparatus comprises:

44. according to the described projection arrangement of claim 42 based on photoconductive tube, also comprise: be arranged to first output reflector that can reflect described first peripheral direction, described first output reflector reflects described useful polarised light on described second orthogonal direction; And

45., also comprise according to the described projection arrangement of claim 42 based on photoconductive tube:

46., also comprise according to the described projection arrangement of claim 39 based on photoconductive tube:

Input photoconductive tube with input surface and output surface, described output surface is arranged to be close to described low speculum, described input photoconductive tube receives light in described input surface, and at described output surface place described wide causing is transferred to described low speculum.

47., also comprise according to the described projection arrangement of claim 39 based on photoconductive tube:

Be arranged to be close to outbound course so that the lens that the described light of the described low band of wavelength, described medium wave band and described high band is roughly focused on;

Have the input surface of the described outbound course of next-door neighbour and the output photoconductive tube of output surface, described output photoconductive tube receives described light in described input surface, and at described output surface place described light is roughly transmitted; And

Be arranged on the outbound course so that the projecting lens that the described light of the described low band of wavelength, described medium wave band and described high band is collected and focused on.

48., also comprise according to the described projection arrangement of claim 39 based on photoconductive tube:

Shell speculum with first focus and second focus;

49., also comprise the retro-reflection mirror that is arranged in the described source face relative with described shell speculum according to the described projection arrangement of claim 48 based on photoconductive tube.

50., also comprise according to the described projection arrangement of claim 39 based on photoconductive tube:

51. the projection arrangement based on photoconductive tube comprises:

At the polarizing beam splitter that the input surface roughly receives non-polarized light, described polarizing beam splitter first luminous energy to useful polarization on outbound course transmits, and reflects at second luminous energy of reduction direction to otiose polarization;

Be arranged on the described reduction direction so that the major part of second luminous energy of polarization is received and its change is become the wave plate of described useful polarization;

Be arranged to the reduction speculum that can reflect described reduction direction, described reduction speculum reflects described second luminous energy on described outbound course;

Be arranged on the described outbound course so that the modulator that described first luminous energy and described second luminous energy are roughly modulated; And

Be arranged on the described outbound course so that to receiving, and described first luminous energy and described second luminous energy are transferred to the initial light conduit of described modulator from described first luminous energy of described polarizing beam splitter with from described second luminous energy of described reduction speculum.

52., also comprise according to the described projection arrangement of claim 51 based on photoconductive tube:

Be arranged to be close to described outbound course so that the lens that described first luminous energy and described second luminous energy are roughly focused on;

Have and be arranged to be close to the input surface of described outbound course and the output photoconductive tube of output surface, described output photoconductive tube receives described first luminous energy and described second luminous energy in described input surface, and at described output surface place described first luminous energy and described second luminous energy is roughly transmitted; And

Be arranged on the described outbound course so that the projecting lens that described first luminous energy and described second luminous energy are collected and focused on.

53., also comprise according to the described projection arrangement of claim 51 based on photoconductive tube:

Input photoconductive tube with input surface and output surface, described output surface is arranged to be close to the described input surface of described polarizing beam splitter, described input photoconductive tube roughly receives non-polarized light in described input surface, and at described output surface place described non-polarized light is transferred to described polarizing beam splitter.

54., also comprise according to the described projection arrangement of claim 51 based on photoconductive tube:

Be arranged to be close to described outbound course so that the colour wheel of continuous color roughly is provided for described first luminous energy and described second luminous energy.

55., also comprise according to the described projection arrangement of claim 51 based on photoconductive tube:

Be arranged to be close to described outbound course so that the rolling color portion that roughly provides color to show for described first luminous energy and described second luminous energy.