CN209149051U - Composite phase conversion element and projection arrangement - Google Patents

Abstract

A kind of composite phase conversion element and projection arrangement, the composite phase conversion element are configured on the transmission path of at least one light beam.Composite phase conversion element includes at least one polarization element, the polarization element includes multiple polarisation areas in the same plane, wherein at least the two in the multiple polarisation area has different polarization directions, at least one light beam penetrates at least the two in the polarisation area of at least one polarization element simultaneously and is respectively formed at least two beamlets, and the polarization state of at least two beamlets corresponds to the polarization direction of at least the two in its polarisation area penetrated.Therefore, using the projection arrangement of above-mentioned composite phase transition components in polarized stereoscopic mode, the quality for showing picture or bright dark uniform can be made, user is allowed to observe the preferable stereoscopic display picture of the uniformity.

Description

Composite phase conversion element and projection arrangement

Technical field

The utility model relates to a kind of optical element and Optical devices, and turns in particular to a kind of composite phase Change element and projection arrangement.

Background technique

Projection arrangement is a kind of display device to generate large scale picture, with the evolution and innovation of science and technology, Always constantly in progress.The image-forming principle of projection arrangement is to be converted into illuminating bundle caused by lighting system by light valve Image strip, then by image strip by projection lens projects to projection object (such as: on screen or metope), to form throwing Shadow picture.

In addition, lighting system is also with market to projection arrangement brightness, color saturation, service life, asepsis environment-protecting etc. Deng requirement, all the way from ultra high performance light bulb (Ultra-high-performance lamp, UHP lamp), light emitting diode (Light-emitting diode, LED) evolves to always current state-of-the-art laser diode (laser diode, LD) light Source.But in the illumination system, generating red-green glow at present is to be issued and excited using blue light laser diode compared with the way for meeting cost Light beam generates green-yellow light to fluorescence colour wheel, and using the fluorescent powder of excitation beam excitation fluorescence colour wheel.Then, then via optical filtering Element filters out required feux rouges or green light to use.

However, in known illumination system structure, the polarization polarity that excitation beam enters after projection arrangement can be projected Optical element inside device destroys so that the polarization direction of the light beam projected from projection arrangement and intensity become it is at random not One, in turn result in the problem of the brightness unevenness of display picture.Therefore, if projection arrangement is in polarized stereoscopic mode, (camera lens is additional Polarizing film) generate stereopsis display picture when, the image frame being projected out from camera lens and polarizing film will be made picture face occur The phenomenon that color is uneven or brightness unevenness is even.

" background technique " paragraph is used only to help to understand the content of the present invention, therefore is taken off in " background technique " paragraph The content of dew may include some known technologies without constituting road known to those skilled in the art.In " background technique " paragraph institute The content of exposure does not represent the content or the utility model one or more embodiment problem to be solved, practical at this It has been readily known to those persons skilled in the art or has recognized before novel application.

Utility model content

The utility model provides a kind of composite phase conversion element and projection arrangement, and projection arrangement is in polarized stereoscopic mode When, the quality for showing picture or bright dark uniform can be made, user is allowed to observe the preferable stereoscopic display picture of the uniformity.

The other objects and advantages of the utility model can be obtained from the technical characteristic disclosed by the utility model into one The understanding of step.

It is to propose one kind up to one of above-mentioned or part or all of purpose or other purposes, an embodiment of the utility model Composite phase conversion element, is configured on the transmission path of at least one light beam.Composite phase conversion element includes at least one Polarization element, including multiple polarisation areas in the same plane, wherein at least the two in polarisation area has different polarization directions, At least one light beam penetrates at least the two in the polarisation area of at least one polarization element simultaneously and is respectively formed at least two sub-lights Beam, and the polarization state of at least two beamlets corresponds to the polarization direction of at least the two in its polarisation area penetrated.

It is to propose one kind up to one of above-mentioned or part or all of purpose or other purposes, an embodiment of the utility model Projection arrangement, including lighting system, at least one light valve and camera lens.Lighting system is for providing illuminating bundle.Lighting system At least one is adapted to provide for including at least one excitation light source and composite phase conversion element and at least one excitation light source Excitation beam.Composite phase conversion element is configured on the transmission path of at least one excitation beam.Composite phase conversion element Including at least one polarization element, at least one polarization element includes multiple polarisation areas in the same plane, wherein polarisation area Both at least there is different polarization directions, at least one light beam penetrates the polarisation area of at least one polarization element extremely simultaneously Lack the two and be respectively formed at least two beamlets, and the polarization state of at least two beamlets corresponds to its polarisation penetrated The polarization direction of at least the two in area.Illuminating bundle includes at least two beamlets.At least one light valve is set to illuminating bundle Transmission path on, suitable for illuminating bundle is converted to image strip.Camera lens is set on the transmission path of image strip, is suitable for Image strip is converted into projected light beam.

Based on above-mentioned, the embodiments of the present invention at least have effects that following one of advantage or.It is practical new at this In the composite phase conversion element of type or the projection arrangement configured with composite phase conversion element, polarization element is included in same flat Multiple polarisation areas on face, and at least the two in these polarisation areas has different polarization directions.Therefore light beam can be made to penetrate partially Optical element, and the light beam for penetrating polarization element has different polarization states in different location.In this way, which projection arrangement is inclined Shake three-dimensional pattern (i.e. the additional polarizing film of projection lens) when, may make display picture quality or it is bright it is dark uniformly, and then allow use Person observes the preferable stereoscopic display picture of the uniformity through polarization-type three-dimensional glasses.

In order to make the above-mentioned features and advantages of the utility model more obvious and understandable, special embodiment below, and cooperate attached drawing It is described in detail below.

Detailed description of the invention

Fig. 1 is the projection arrangement schematic diagram of an embodiment of the present invention.

Fig. 2 is the composite phase conversion element schematic diagram of Fig. 1.

Fig. 3 is the composite phase conversion element schematic diagram of another embodiment of the utility model.

Fig. 4 is the composite phase conversion element schematic diagram of another embodiment of the utility model.

Fig. 5 is the projection arrangement schematic diagram of another embodiment of the utility model.

Fig. 6 is the composite phase conversion element schematic diagram of Fig. 5.

Fig. 7 is the projection arrangement schematic diagram of another embodiment of the utility model.

Description of symbols

10,10A, 10B: projection arrangement

50: light valve

60: projection lens

100,100A, 100B: lighting system

105: light source

110: excitation light source

120: secondary light source

130,130A, 130B, 130C, 130D: composite phase conversion element

132: polarization element

132_1: the first polarization element

132_2: the second polarization element

134: shaft

136: driving element

138: reflecting element

140: even optical element

150: Wavelength changing element

160: beam splitter

170: reflecting element

180: filtering apparatus

A1, A2, B1, B2: polarisation area

C, D, E: position

L: light beam

L1: excitation beam

L2: auxiliary beam

L3: be stimulated light beam

LB: illuminating bundle

LI: image strip

LP: projected light beam.

Specific embodiment

Aforementioned and other technology contents, feature and effect in relation to the utility model refer to the one of attached drawing in following cooperation In the detailed description of preferred embodiment, can clearly it present.The direction term being previously mentioned in following embodiment, such as: upper, Under, it is left and right, front or rear etc., be only the direction with reference to attached drawing.Therefore, the direction term used is for illustrating not to be used to limit The utility model processed.

Fig. 1 is the projection arrangement schematic diagram of an embodiment of the present invention.Please refer to Fig. 1.In the present embodiment, projection dress 10 are set for providing projected light beam LP.Specifically, projection arrangement 10 include lighting system 100, at least one light valve 50 and Projection lens 60, and lighting system 100 is for providing illuminating bundle LB.Light valve 50 is configured at the transmission path of illuminating bundle LB On, for illuminating bundle LB to be converted at least one image strip LI.So-called illuminating bundle LB refers to that lighting system 100 exists Any time is provided to the light beam of light valve 50.Projection lens 60 is configured on the transmission path of image strip LI, is used for image Light beam LI is converted into projected light beam LP, and projected light beam LP is projected to projection target (not being painted) from projection arrangement 10, such as Screen or metope.

In the technology for being applied to stereoscopic display, the projection arrangement 10 of the present embodiment can be using as polarization-type three-dimensional image Projector.Specifically, two projection arrangements 10 are in polarized stereoscopic mode (outside the projection lens 60 i.e. in two projection arrangements 10 Configure the polarizing film in different polarization direction or the polarizing film in two built-in different polarization directions of projection arrangement 10) when, it can be used Two provided projected light beam LP of projection arrangement 10 pass through polarizing film to generate the image frame of different polarization state, in turn respectively User is allowed to observe three-dimensional display picture, such as the anaglyph spectacles difference that user is worn through polarization-type three-dimensional glasses Two polarizers of left eyeglass lens and right eye eyeglass are configured to, and two polarizers correspond to the two of two projection arrangements The image frame of polarization state caused by a polarizing film and allow the right and left eyes of user to receive corresponding projector respectively and projected Image frame out, and then achieve the effect that stereoscopic display.

Specifically, in the present embodiment, light valve 50 is, for example, that liquid crystal covers silicon plate (Liquid Crystal On Silicon panel, LCoS panel), digital micro mirror device (Digital Micro-mirror Device, DMD) etc. it is anti- Penetrate formula light modulator.In some embodiments, light valve 50 is also possible to light transmitting liquid crystal panel (Transparent Liquid Crystal Panel), electro-optic modulators (Electro-Optical Modulator), maganeto-optic modulators (Maganeto- Optic modulator), the penetration light modulator such as acousto-optic light modulation (Acousto-Optic Modulator, AOM).This Utility model is to the kenel and its type of light valve 50 and without restriction.Illuminating bundle LB is converted to image strip by light valve 50 The method of LI, detailed step and embodiment can be obtained enough teachings by general knowledge known in this field, suggest and implement to say It is bright, therefore repeat no more.In the present embodiment, the quantity of light valve 50 is one, e.g. uses single digital micro mirror device (1- DMD projection arrangement 10), but then can be in other embodiments multiple, the utility model is not limited to this.

Combination of the projection lens 60 for example including one or more optical mirror slips with diopter, it is saturating for example including concave-concave The various combinations of the non-planar eyeglass such as mirror, biconvex lens, concave-convex lens, meniscus, plano-convex lens and plano-concave lens.Yu Yi In embodiment, projection lens 60 also may include planar wave eyeglass, by the image from light valve 50 in a manner of reflecting or penetrate Light beam LI is projected to projection target.The utility model is to the kenel and its type of projection lens 60 and without restriction.

In addition, in some embodiments, projection arrangement 10 also optionally includes the light of optically focused, refraction or reflection function Element is learned, the illuminating bundle LB to issue lighting system 100 is guided to light valve 50, and, to what light valve 50 was issued Image strip LI is guided to projection lens 60, and then generates projected light beam LP, but the utility model is without being limited thereto.

Lighting system 100 includes at least one light source 105, composite phase conversion element 130 and even optical element 140.Tool For body, lighting system 100 further includes Wavelength changing element 150, at least one beam splitter 160, at least one reflecting element 170 and filtering apparatus 180.

Light source 105 is for providing at least one light beam L.Specifically, light source 105 includes excitation light source 110 and auxiliary Light source 120, wherein excitation light source 110 provides excitation beam L1, and secondary light source 120 provides auxiliary beam L2.In the present embodiment In, excitation light source 110 is the laser diode (Laser Diode, LD) of capable of emitting blue excitation light beam and can be two pole of laser Pipe array, secondary light source 120 are the capable of emitting red laser diode of excitation beam or the light-emitting diodes of capable of emitting red beam It manages (LED).In other words, in the present embodiment, light source 105 is all laser light emitting device.

Wavelength changing element 150 is configured on the transmission path of excitation beam L1, and is located at excitation light source 110 and even light Between element 140.Wavelength changing element 150 has at least one wavelength conversion material to convert excitation beam L1 as stimulated luminescence Beam L3.In the present embodiment, blue excitation light beam is e.g. converted into green beam or yellow light beam or yellow green light beam.? In different embodiments, the configuration of the wavelength conversion material of Wavelength changing element 150 can change according to different types of lighting system 100 Become, the utility model is to the configuration kenel and its type of Wavelength changing element 150 and without restriction.

At least one beam splitter 160 is configured on the transmission path of excitation beam L1 and/or auxiliary beam L2, and at least One reflecting element 170 is to reflect or guide above-mentioned light beam.For example, in the present embodiment, at least one beam splitter 160 include reflection blue light spectroscope (Dichroic Mirror with Blue reflect, DMB) and the green tangerine light point of reflection Light microscopic (Dichroic Mirror with Green and Orange reflect, DMGO), wherein reflection blue light spectroscope (beam splitter 160) is first to be reflected through wavelength convert between secondary light source 120 and composite phase conversion element 130 The excitation beam L1 of part 150 and the auxiliary beam L2 from secondary light source 120 is allowed to penetrate.Reflect (the light splitting of green tangerine light spectroscope Element 160) between filtering apparatus 180 and composite phase conversion element 130, to reflect stimulated luminescence L3 and allow to excite Light beam L1, auxiliary beam L2 are penetrated, and then are allowed all required light beams to collect and be transferred to filtering apparatus 180.In different embodiments, The configuration of beam splitter 160 and reflecting element 170 and type can change according to different types of lighting system 100, this is practical Novel configuration kenel and its type to beam splitter 160 and reflecting element 170 is simultaneously without restriction.

Filtering apparatus 180 is configured between excitation light source 110 and even optical element 140, that is, is located at and is reflected green tangerine light spectroscope Between (beam splitter 160) and even optical element 140, filtering apparatus 180 have not homochromy optical filter by auxiliary beam L2 and Light beam L3 be stimulated by the way that correspond to the red light portion and green portions that generate illuminating bundle LB, filtering apparatus 170, which has, to be expanded Discrete piece or transparent area pass through by excitation beam L1 to correspond to the blue light components for generating illuminating bundle LB.Specifically, in this implementation In example, filtering apparatus 180 is rotatable filter wheel (Filter wheel) device, for according to when ordered pair excitation beam L1, auxiliary The light beam L2 or light beam L3 that is stimulated generates diffusion and/or filter effect, makes to increase by the excitation purity of the light beam of filtering apparatus 180 Add.In different embodiments, the configuration of optical filter not homochromy in filtering apparatus 180 can be according to different types of lighting system 100 And change, the utility model is to the configuration kenel and its type of filtering apparatus 180 and without restriction.

Even optical element 140 is for allowing the part of at least one excitation beam L1 to pass through to form illuminating bundle LB.This means, even Optical element 140 is configured at excitation beam L1, auxiliary beam L2 and is stimulated on the transmission path of light beam L3, above-mentioned to adjust The light spot shape of light beam, so that the light spot shape for the illuminating bundle LB being emitted from even optical element 140 is able to cooperate the work of light valve 50 The shape (for example, rectangle) in area, and make hot spot everywhere there is consistent or close luminous intensity.In the present embodiment, even optical element 140 be, for example, integration rod, but in other embodiments, even optical element 140 is also possible to the optical element of other appropriate kenels, The utility model is without being limited thereto.

Fig. 2 is the composite phase conversion element schematic diagram of Fig. 1.Please refer to Fig. 1 and Fig. 2.Composite phase conversion element 130 is matched It is placed on the transmission path of light beam L, including at least one polarization element 132, polarization element 132 may be, for example, half wave The combination of piece, quarter-wave plate, the piece that depolarizes, circular polarizing disk or quarter-wave plate and linear polarizer.In the present embodiment, 132 quantity of polarization element is single, and by being made one of in above-mentioned material, but the utility model is not limited to This.

Specifically, in the present embodiment, polarization element 132 includes multiple polarisation area A in the same plane, wherein this At least the two of a little polarisation area A has different polarization directions, so that light beam L penetrates these polarisations of polarization element 132 simultaneously Area A's both is at least respectively formed at least two beamlets (not being painted), and the polarization state of this two beamlets corresponds to The polarization direction of its polarisation area A penetrated.For example, in the present embodiment, if polarization element 132 is half wave plate It is made, and the configuration of the polarization direction of adjacent polarisation area A1, A2 is different, corresponding to the polarization direction for making adjacent polarisation area A1, A2 Two optical axis included angles in 45 degree (i.e. formed with different polarization state beamlets).Therefore, when excitation beam L1 or fill-in light When beam L2 passes through polarization element 132, composite polarizing direction (polarization direction i.e. comprising corresponding polarisation area A1, A2) will be generated Excitation beam L1 or auxiliary beam L2, i.e., be orthogonal by the polarization state of two beamlets of polarisation area A1, A2 Direction.In some embodiments, polarization element 132 may also include at least one transparent area (not being painted), polarization element 132 it is saturating Light area may be, for example, to hollow out area or configuration transparent glass, and to make light beam L by without changing polarization state, but this is practical It is novel to be not limited to this.

Stated differently, since excitation beam L1 is the light for having deflection polarity (linear polarization), therefore excitation beam L1 penetrates polarizing element Polarization state can be changed because of the type of polarization element 132 after part 132.Therefore, when excitation beam L1 penetrates polarization element simultaneously When different polarisation area A in 132, the excitation beam L1 for penetrating polarization element 132 has different polarization shapes in different location State.This means, for lighting system 100 in running, excitation beam L1 can produce difference by composite phase conversion element 130 The emergent light of polarization direction, and the luminous intensity of emergent light is identical, old friend's eye will experience even intensity and without particular polarization Image frame.In this way, when two projection arrangements 10 (configure polarizing film in projection lens 60 in polarized stereoscopic mode outside Or in the built-in polarizing film of projection arrangement 10) when, so that passing through the light beam of composite phase conversion element 130 in two projection arrangements 10 It, can be in generation quality on screen and bright dark uniform image frame, Jin Errang after sequentially penetrating projection lens 60 and polarizing film again User observes the preferable stereoscopic display picture of the uniformity through polarization-type three-dimensional glasses.In addition, in the present embodiment, it is compound Phase-shift component 130 is without the use of motor, therefore can further save space and reduce consumption power.Similarly, above-mentioned auxiliary Helping light beam L2 or other light beams to be transferred to composite phase conversion element 130 also has identical effect, and so it will not be repeated.

In the present embodiment, the production method of composite phase conversion element 130 can be is cut in single polarized material Processing procedure is cut, to generate multiple and those above-mentioned polarisation area A same sizes polarized materials.Then, the son under cutting is partially Vibration material is spliced into polarization element 132.In the above-mentioned cutting the step of, may be selected every sub- polarized material all by same direction into Row cutting processing procedure, and then available polarization direction is parallel to each other or vertical polarisation area A, as illustrated in Figure 2.Either, upper In the step of stating cutting, every sub- polarized material may be selected and all carry out cutting processing procedure by different directions, and then can get different inclined Polarisation area B1, the B2 in vibration direction, the one of polarization element 132_2 shown as depicted in fig. 3, polarization element 132_2 have more A polarisation area B, wherein the polarization direction of polarisation area B1, B2 mutually accompanies an angle.In the above-mentioned cutting the step of, cleavable class Like the square of Fig. 2 and Fig. 3, or the other kinds of geometric figure of cutting, e.g. triangle or hexagon, the utility model It is not limited to this.

In another embodiment, composite phase conversion element 130 may also include oscillating element (not being painted), to make polarisation Element 132 vibrates back and forth along a symmetry axis, and then changes the transmitting road of passed through light beam L by the oscillation of polarization element 132 Diameter.Therefore, can achieve the effect that promote picture resolution by the transmission path of suitably offset beam L.

Fig. 3 is the composite phase conversion element schematic diagram of another embodiment of the utility model.Please refer to Fig. 3.The present embodiment Composite phase conversion element 130A be similar to Fig. 2 composite phase conversion element 130.The two the difference is that, in this reality It applies in example, the quantity of polarization element 132 is two, and is missed one another on the direction of transfer of light beam L.Specifically, compound phase The polarization element 132 of position conversion element 130A includes the first polarization element 132_1 and the second polarization element 132_2, and first Polarization element 132_1 and the second polarization element 132_2 is identical polarized material, and the first polarization element 132_1's is described more The multiple polarisation area B of a polarisation area A and the second polarization element 132_2 misses one another configuration.But in some embodiments, One polarization element 132_1 can be different polarized materials from the second polarization element 132_2, and the utility model is not limited to this.Such as This one, the polarization uniformity of excitation beam L1 or auxiliary beam L2 can be promoted, projection arrangement be applied to polarized stereoscopic mode When, quality and bright dark uniform image frame can be generated on screen, and then user is allowed to observe through polarization-type three-dimensional glasses The preferable stereoscopic display picture of the uniformity out.

Fig. 4 is the composite phase conversion element schematic diagram of another embodiment of the utility model.In the present embodiment, compound phase The polarization element 132 of position conversion element 130B is liquid crystal cell, which has multiple polarisation area A, each polarisation Area A is the unit with liquid crystal, those polarisation areas A is passed through different electric currents with can each leading into different electric currents or timing, To change the polarization state for the light beam L for penetrating polarisation area A.Specifically, in the present embodiment, polarization element 132 can be by logical Different electric currents is crossed to change the polarization direction angle of penetrated light beam L, and the polarization direction angle foundation that light beam L is changed The size of current that polarization element 132 is passed through.Therefore, under the same time, polarization element 132 can be big by different electric currents are connected with Small multiple polarisation area A accordingly change the penetrated polarization direction light beam L angle, so that each penetrated light beam L's is inclined Vibration state is all different.In this way, which quality and bright dark uniform shadow can be generated on screen when being applied to polarized stereoscopic mode As picture, and then user is allowed to observe the preferable stereoscopic display picture of the uniformity through polarization-type three-dimensional glasses.

Fig. 5 is the projection arrangement schematic diagram of another embodiment of the utility model.Fig. 6 is the composite phase conversion element of Fig. 5 Schematic diagram.Please refer to Fig. 5 and Fig. 6.The composite phase conversion element 130C of the projection arrangement 10A of the present embodiment is similar to Fig. 2's Composite phase conversion element 130.The two the difference is that, in the present embodiment, composite phase conversion element 130C be can revolve Rotatable optical element.Specifically, composite phase conversion element 130C further includes shaft 134 and driving element 136.Polarizing element Part 132 is connected to shaft 134, and driving element 134 is rotated to drive shaft 132, and polarization element 132 can be discoid.It drives Element 136 is moved to drive polarization element 132 to rotate with shaft 134 for Pivot axle timing, and works as polarization element 132 When rotation, the polarization state time to time change of the light beam L of polarization element 132 is penetrated.In the present embodiment, driving element 136 For example, motor connects shaft 134, and light beam L penetrates the non-central place of polarization element 132.However in some embodiments, it drives Dynamic element 136 may be, for example, drive component, and light beam L is penetrated at the center of polarization element 132, and the utility model is not limited to This.In this way, which the polarization uniformity of excitation beam L1 or auxiliary beam L2 can be promoted further, it is being applied to polarized stereoscopic When mode, quality and bright dark uniform image frame can be generated on screen, and then allow user through polarization-type three-dimensional glasses Observe the preferable stereoscopic display picture of the uniformity.

It is noted that composite phase conversion element 130C is optionally configured at lighting system 100A or projection dress Set multiple and different positions of 10A.Specifically, composite phase conversion element 130C is configured in secondary light source 120 and wavelength turns It changes between element 150, furtherly, composite phase conversion element 130C, which is located at, reflects green tangerine light spectroscope (beam splitter 160) and between secondary light source 120, position C as shown in Figure 5.In this way, can allow through the sharp of Wavelength changing element 150 It shines and beam L1 and passes through from the auxiliary beam L2 that secondary light source 120 issues, and then make that excitation beam L1's and auxiliary beam L2 is inclined Polarization state timing is uniform, has good display effect.However in various embodiments, composite phase can also be converted member Part 130C is configured between Wavelength changing element 150 and filtering apparatus 180, furtherly, composite phase conversion element 130C Positioned at reflecting between green tangerine light spectroscope (beam splitter 160) and filtering apparatus 180, position D as shown in Figure 5 is sharp to allow Luminous beam L1, auxiliary beam L2 and the light beam L3 that is stimulated pass through.In another different embodiment, projection arrangement 10A can not Including filtering apparatus 180, and composite phase conversion element 130C may include filter element (not being painted), filter element and polarizing element The allocation position of part 132 is overlapped, i.e., composite phase conversion element 130C is configured on filter element.It in other words, i.e., will be compound Phase-shift component 130C combination filter element and form filtering apparatus, position E as shown in Figure 5.

In addition to this, another it is noted that in some embodiments, can be by the composite phase conversion element 130C of Fig. 5 The quantity for further increasing polarization element 132 is two, forms the composite phase conversion element 130A for being similar to Fig. 3.It is real herein It applies in example, can further control the one of them of two polarization elements 132 (132_1,132_2) in the transmitting side for being parallel to light beam L It rotates to upward timing, i.e., a polarization element 132 is static does not rotate.Either, make two polarization elements 132 in being parallel to light It is rotated to timing on the direction of transfer of beam L, and the velocity of rotation of two polarization elements 132 is different, i.e. two polarization elements 132 are all Rotation but revolving speed difference.Illustrate herein, polarization elements are institute in the rotation of timing on the direction of transfer for being parallel to light beam L Polarization elements are stated to be parallel to the rotation of timing as rotary shaft of the direction of transfer of light beam L.Therefore, excitation can further be promoted The polarization uniformity of light beam L1 or auxiliary beam L2.In this way, can be produced on screen when being applied to polarized stereoscopic mode Color and bright dark uniform image frame are generated, and then allows user to observe the uniformity through polarization-type three-dimensional glasses and preferably stands Body shows picture.

Fig. 7 is the projection arrangement schematic diagram of another embodiment of the utility model.Please refer to Fig. 7.The compound phase of the present embodiment Position conversion element 130D is similar to the composite phase conversion element 130 of Fig. 1.The two the difference is that, it is in the present embodiment, multiple Conjunction phase-shift component 130D is reflective optical element.Specifically, in the present embodiment, composite phase conversion element 130D further includes reflecting element 138, is configured at polarization element 132, to reflect the beamlet for penetrating polarization element 132. In detail, composite phase conversion element 130D be located at reflect green tangerine light spectroscope (beam splitter 160) and secondary light source 120 it Between, the excitation beam L1 from Wavelength changing element 150 and the auxiliary beam L2 from the sending of secondary light source 120 penetrate polarizing element The green tangerine light spectroscope (beam splitter 160) of reflection is reflexed to by reflecting element 138 after part 132, and then makes excitation beam L1 and auxiliary The polarization state timing of light beam L2 is uniform.Therefore, it can be further reduced the occupancy volume of projection arrangement 10B, and user can be made The preferable stereoscopic display picture of the uniformity is observed through polarization-type three-dimensional glasses.

In conclusion the embodiments of the present invention at least have effects that following one of advantage or.It is practical new at this In the composite phase conversion element of type or the projection arrangement configured with composite phase conversion element, polarization element is included in same flat Multiple polarisation areas on face, and at least the two in these polarisation areas has different polarization directions.Therefore light beam can be made to penetrate partially Optical element, and the light beam for penetrating polarization element has different polarization states in different location.In this way, which projection arrangement is inclined Shake three-dimensional pattern (i.e. the additional polarizing film of projection lens) when, may make display picture quality or it is bright it is dark uniformly, and then allow use Person observes the preferable stereoscopic display picture of the uniformity through polarization-type three-dimensional glasses.

The above, the only preferred embodiment of the utility model are implemented when that cannot limit the utility model with this Range, i.e., it is all according to simple equivalence changes made by the utility model claims book and utility model description with repair Change, all still belong to the utility model patent covering in the range of.In addition any embodiment or claim of the utility model are not necessary to Reach whole purposes or advantage or feature disclosed by the utility model.In addition, abstract part and utility model title are only to use It is used to assist patent document to retrieve, not is used to limit the interest field of the utility model.In addition, this specification or right are wanted Ask the terms such as " first " that refers in book, " second " only to name the title of element (element) or distinguish different embodiments Or range, and not it is used to the quantitative upper limit of restriction element or lower limit.

Claims (24)

1. a kind of composite phase conversion element, is configured on the transmission path of at least one light beam, which is characterized in that described compound Phase-shift component includes:

At least one polarization element, including multiple polarisation areas in the same plane, wherein at least the two of the multiple polarisation area Person has different polarization directions, at least one described light beam penetrates the multiple inclined of at least one polarization element simultaneously Light area both is at least respectively formed at least two beamlets, and the polarization state of at least two beamlets corresponds to it The polarization direction of at least the two in the multiple polarisation area penetrated.

2. composite phase conversion element according to claim 1, which is characterized in that at least one described polarization element is phase Same polarized material.

3. composite phase conversion element according to claim 2, which is characterized in that at least one described polarization element is two / mono- wave plate, quarter-wave plate, the piece that depolarizes, circular polarizing disk, liquid crystal cell or quarter-wave plate and linear polarizer Combination.

4. composite phase conversion element according to claim 1, which is characterized in that at least one described polarization element also wraps At least one transparent area is included, pass through at least one described light beam.

5. composite phase conversion element according to claim 1, which is characterized in that the composite phase conversion element also wraps It includes:

Shaft is connected at least one described polarization element；And

Driving element, to drive the shaft to rotate, wherein the driving element is to drive at least one described polarizing element Part is rotated using the shaft as Pivot axle timing, and when the rotation of at least one described polarization element, is penetrated described The polarization state time to time change of at least one light beam of at least one polarization element.

6. composite phase conversion element according to claim 5, which is characterized in that the driving element is motor, and even The shaft is connect, at least one described light beam penetrates the non-central place of at least one polarization element.

7. composite phase conversion element according to claim 5, which is characterized in that the driving element is to drive component, And at least one described light beam penetrates at the center of at least one polarization element.

8. composite phase conversion element according to claim 1, which is characterized in that the composite phase conversion element also wraps It includes:

Reflecting element is configured at least one described polarization element, will penetrate the described more of at least one polarization element A beamlet is reflected.

9. composite phase conversion element according to claim 8, which is characterized in that the composite phase conversion element also wraps It includes:

Oscillating element, vibrate at least one polarization element back and forth along a symmetry axis.

10. composite phase conversion element according to claim 1, which is characterized in that at least one polarization element Quantity is two, and is missed one another on the direction of transfer of at least one light beam.

11. composite phase conversion element according to claim 10, which is characterized in that described two polarization elements are wherein It is rotated to timing on the direction of transfer of one at least one light beam described in being parallel to.

12. composite phase conversion element according to claim 10, which is characterized in that described two polarization elements are in parallel In rotating to timing on the direction of transfer of at least one light beam, and the velocity of rotation of described two polarization elements is different.

13. a kind of projection arrangement, which is characterized in that the projection arrangement includes:

Lighting system, for providing illuminating bundle, the lighting system includes: at least one light source and composite phase conversion member Part；Wherein

At least one described light source is for providing at least one light beam；And the composite phase conversion element be configured at it is described extremely On the transmission path of a few light beam, the composite phase conversion element includes at least one polarization element, it is described at least one Polarization element includes multiple polarisation areas on same plane, wherein at least the two in the multiple polarisation area has different polarizations Direction, at least one described light beam penetrate simultaneously the multiple polarisation area of at least one polarization element both at least and At least two beamlets are respectively formed, and the polarization state of at least two beamlets corresponds to the multiple polarisation area at least The polarization direction of the two, the illuminating bundle include at least two beamlets；

At least one light valve is set on the transmission path of the illuminating bundle, for the illuminating bundle to be converted to image Light beam；And

Camera lens is set on the transmission path of the image strip, for the image strip to be converted to projected light beam.

14. projection arrangement according to claim 13, which is characterized in that at least one described polarization element is identical inclined Shake material.

15. projection arrangement according to claim 14, which is characterized in that at least one described polarization element is half The combination of wave plate, quarter-wave plate, the piece that depolarizes, circular polarizing disk, liquid crystal cell or quarter-wave plate and linear polarizer.

16. projection arrangement according to claim 13, which is characterized in that at least one described polarization element further includes at least One transparent area, pass through at least one described light beam.

17. projection arrangement according to claim 13, which is characterized in that the composite phase conversion element further includes shaft And driving element, the shaft are connected at least one described polarization element, the driving element is to drive the shaft Rotation, wherein the driving element is to drive at least one described polarization element using the shaft as Pivot axle timing Ground rotation, and when the rotation of at least one described polarization element, penetrate at least one polarization element it is described at least one The polarization state time to time change of light beam.

18. projection arrangement according to claim 17, which is characterized in that the driving element is motor, and described in connection Shaft, at least one described light beam penetrate the non-central place of at least one polarization element.

19. projection arrangement according to claim 17, which is characterized in that the driving element is drive component, and described At least one light beam penetrates at the center of at least one polarization element.

20. projection arrangement according to claim 13, which is characterized in that the composite phase conversion element further includes reflection Part is configured at least one described polarization element, will penetrate the multiple beamlet of at least one polarization element It is reflected.

21. projection arrangement according to claim 20, which is characterized in that the composite phase conversion element further includes oscillation Element, vibrate at least one described polarization element back and forth along a symmetry axis.

22. projection arrangement according to claim 13, which is characterized in that the quantity of at least one polarization element is two It is a, and miss one another on the direction of transfer of at least one light beam.

23. projection arrangement according to claim 22, which is characterized in that the one of them of described two polarization elements is in flat Row on the direction of transfer of at least one light beam in rotating to timing.

24. projection arrangement according to claim 22, which is characterized in that described two polarization elements in be parallel to it is described extremely It is rotated to timing on the direction of transfer of a few light beam, and the velocity of rotation of described two polarization elements is different.