WO2018035926A1 - 一种投影仪 - Google Patents

一种投影仪 Download PDF

Info

Publication number
WO2018035926A1
WO2018035926A1 PCT/CN2016/100590 CN2016100590W WO2018035926A1 WO 2018035926 A1 WO2018035926 A1 WO 2018035926A1 CN 2016100590 W CN2016100590 W CN 2016100590W WO 2018035926 A1 WO2018035926 A1 WO 2018035926A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
mirror
disposed
chip
dichroic mirror
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2016/100590
Other languages
English (en)
French (fr)
Inventor
徐向阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US15/324,489 priority Critical patent/US20180180977A1/en
Publication of WO2018035926A1 publication Critical patent/WO2018035926A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2053—Intensity control of illuminating light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/04—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light by periodically varying the intensity of light, e.g. using choppers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/1006—Beam splitting or combining systems for splitting or combining different wavelengths
    • G02B27/102—Beam splitting or combining systems for splitting or combining different wavelengths for generating a colour image from monochromatic image signal sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
    • G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2073—Polarisers in the lamp house
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/10—Simultaneous recording or projection
    • G03B33/12—Simultaneous recording or projection using beam-splitting or beam-combining systems, e.g. dichroic mirrors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only
    • G02B27/149—Beam splitting or combining systems operating by reflection only using crossed beamsplitting surfaces, e.g. cross-dichroic cubes or X-cubes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B33/00—Colour photography, other than mere exposure or projection of a colour film
    • G03B33/08—Sequential recording or projection

Definitions

  • the present invention relates to the field of image processing technologies, and in particular, to a projector.
  • the traditional projector is only used in office, usually only displays a static picture, so the picture will not appear because of the slow response of the LCD in the LCD/LCoS chip and the visual residual phenomenon of the human eye itself. Shadow phenomenon.
  • projectors have been used in home theaters. If the projection chip used in home theaters is an LCD/LCoS chip, the phenomenon of "smear" due to dynamic pictures will be more serious than that of DMD chips, but even the corresponding speed of DMD chips.
  • Faster due to the visual residual phenomenon of the human eye, it is only from the aspect of improving the response speed that the "smear" phenomenon of the dynamic picture cannot be fundamentally removed.
  • the "smear" phenomenon is mainly caused by two reasons.
  • the first one is that the response of the liquid crystal has a certain time. When the image is converted from the previous image to the next image, the intermediate state of the liquid crystal molecules exists.
  • the second reason is that the human eye has a visual residual effect, and the image remains on the retina of the human eye for 10-12 ms, so that the first and second images overlap, resulting in blurring of the image. .
  • the present invention provides a projector having a simple structure.
  • the projector can achieve a simple method to solve the "smear" phenomenon, thereby improving the picture quality and increasing the viewing experience. effect.
  • the present invention provides a projector, wherein the projector comprises:
  • a focusing lens disposed on one side of the light source
  • a switching wheel for intermittently blocking or transmitting light formed by the focusing lens, and blocking a light formed by the focusing lens for a time less than or equal to a time of transmitting light formed by the focusing lens, the switching wheel being disposed at The side of the focusing lens away from the light source;
  • a linearly polarized light synthesizing assembly for causing light transmitted through the switching wheel to form linearly polarized light, the linearly polarized light combining component being disposed on a side of the switching wheel away from the focusing lens;
  • a light separating modulator for separating the linearly polarized light into a plurality of colors of light and modulating the separated plurality of colors, the light separating modulator being disposed at the linearly polarized light synthesizing component away from the switching wheel One side
  • a beam combining mirror for combining the modulated plurality of color lights to form an outgoing light
  • a projection lens is disposed on a side of the beam combining mirror away from the light separating modulator.
  • linearly polarized light synthesizing component comprises:
  • a polarization converter disposed on a side of the switching wheel away from the focusing lens
  • a plurality of shaping optical elements are disposed between the polarization converter and the switching wheel.
  • the light separating modulator comprises an optical splitter for separating the first light, the second light, and the third light, and a first light modulator respectively modulating the first light a second light modulator modulating the second light and a third light modulator modulating the third light.
  • the optical splitter comprises a first dichroic mirror and a second dichroic mirror, the first dichroic mirror being obliquely disposed and located in the linearly polarized light synthesizing component away from the One side of the switching wheel, the second dichroic mirror is disposed in parallel with the first dichroic mirror and located on a side of the first dichroic mirror away from the linearly polarized light combining component.
  • the first light modulator is a first light modulating LCD chip
  • a first mirror disposed parallel to the first dichroic mirror is disposed above the first dichroic mirror
  • the first light modulating LCD chip is disposed adjacent to the second mirror To one side of the color mirror.
  • the second light modulator is a second light modulation LCD chip
  • the second light modulation LCD chip is located above the second dichroic mirror
  • the second two direction a side of the color mirror away from the first dichroic mirror is provided with a second mirror disposed in parallel with the second dichroic mirror
  • the second mirror is disposed above the second mirror a third mirror disposed and the light formed by the reflection of the third mirror is parallel to the light incident on the second mirror
  • the third mirror is disposed adjacent to a side of the second dichroic mirror a third light modulating LCD chip
  • the third light modulating LCD chip is disposed in parallel with the first light modulating LCD chip
  • the second light modulating LCD chip is interposed between the first light modulating LCD chip and the first Between the three light modulating LCD chips and perpendicular to the first light modulating LCD chip, the combining mirror is disposed above the second light modulating LCD chip and located at the first light modulating LCD chip The third light modulates between the LCD chips.
  • said first light modulator comprises a first light modulating Lcos chip located above said multiplexer mirror and said first light modulating Lcos chip and said multiplexer mirror a first polarization beam combining mirror, the first polarization beam combining mirror being disposed adjacent to the first dichroic mirror and provided with a first mirror parallel to the first dichroic mirror.
  • the second light modulator comprises a second light modulation Lcos chip disposed on a side of the beam combining mirror adjacent to the second dichroic mirror and is disposed in the second a second polarization beam splitter between the light modulating Lcos chip and the beam combining mirror and above the second dichroic mirror
  • the third light modulator comprising a third light located below the beam combining mirror Modulating a Lcos chip and a third polarization beam combining mirror disposed between the third light modulation Lcos chip and the beam combining mirror, the third polarization beam combining mirror being located at the second dichroic mirror away from the One side of the first dichroic mirror.
  • the switching wheel comprises a plurality of black areas for blocking light and two transparent areas or blank areas for transmitting light between two adjacent black areas
  • the area of the black and white area is less than or equal to the area of the transparent area or the white area.
  • the switching wheel comprises a translation device and a shielding piece for shielding or transmitting light to the left and right on the translation device.
  • the "smear” phenomenon is solved by a relatively simple method, and at the same time, the slow response speed of the liquid crystal in the LCD/Lcos chip and the residual phenomenon of the human eye (including the response) can be achieved.
  • the "smear” phenomenon caused by the fast DMD chip which can be mentioned High picture quality and increased viewing experience.
  • Figure 1 is a schematic view (1) of the projector of the present invention
  • Figure 2 is a schematic view (2) of the projector of the present invention.
  • FIG. 3 is a schematic structural view of a switch wheel of the projector of the present invention (1);
  • Figure 5 is a first state view of the structure (3) of the switching wheel of the projector of the present invention.
  • FIG. 6 is a second state diagram of the structure (3) of the switching wheel of the projector of the present invention.
  • Figure 7 is a third state diagram of the structure (3) of the switching wheel of the projector of the present invention.
  • Figure 8 is a diagram showing the relationship between the rotational speed of the switching wheel and the switching frequency of the liquid crystal of the chip of the present invention.
  • 1 to 8 are respectively a schematic view of a projector according to the present invention (1), a schematic view of the projector (2), a schematic structural view of the switching wheel (1), a schematic structural view of the switching wheel (2), and a schematic structural view of the switching wheel ( 3)
  • the first state diagram, the structure diagram of the switching wheel (3), the second state diagram, the structure diagram of the switching wheel (3), the third state diagram, and the relationship between the switching wheel speed and the switching frequency of the chip liquid crystal The first state diagram, the structure diagram of the switching wheel (3), the second state diagram, the structure diagram of the switching wheel (3), the third state diagram, and the relationship between the switching wheel speed and the switching frequency of the chip liquid crystal .
  • the projector of the present invention comprises: a light source 1, a focus lens 2, a switching wheel 3, a linearly polarized light combining component, a light separating modulator, a beam combining mirror 4, and a projection lens 5, wherein the focusing lens 2 disposed on one side of the light source 1, the switching wheel 3 can block or transmit light passing through the focusing lens 2 at intervals, that is, the light passing through the focusing lens 2 is intermittently blocked by the switching wheel 2 or intermittently passed through the switching wheel 3, and the time when the light formed by the focusing lens 2 is blocked is less than or equal to the time of transmitting the light formed by the focusing lens 2, the switching wheel 3 is disposed on the side of the focusing lens 2 away from the light source 1, and the linearly polarized light combining component can transmit
  • the light passing through the switching wheel forms linearly polarized light
  • the linearly polarized light synthesizing component is disposed on a side of the switching wheel 3 away from the focusing lens 2.
  • the optical separating modulator is used to separate the linearly polarized light into a plurality of different color lights and to separate the separated A different color light is modulated, the light separating modulator is disposed on a side of the linear polarization combining component away from the switching wheel 3, and the combining mirror 4 is configured to combine the modulated plurality of different colors of light to form an outgoing light, the projection lens 5 is disposed on the side of the beam combining mirror 4 away from the light separating modulator.
  • the working process of the projector of the present invention is that the white light emitted by the light source 1 passes through the focusing lens 2, the focusing lens 2 is used to remove the divergent light in the white light, the light passing through the focusing lens 2 passes through the switching wheel 3, and the switching wheel 3 For intermittently blocking light passing through the focus lens 2 while intermittently transmitting light passing through the focus lens 2 through the switching wheel 3, and blocking the light formed by the focus lens 2 for less than or equal to the light formed by the transmission focus lens 2.
  • the linearly polarized light synthesizing component integrates the light passing through the switching wheel 3 into linearly polarized light
  • the optical separating modulator separates the linearly polarized light into a plurality of different colors of light, and respectively modulates light of a plurality of different colors.
  • a plurality of different color lights are combined by the combining mirrors 4 to form an outgoing light
  • the outgoing light is projected by the projection lens 5 onto the display screen, and the switching wheel 3 blocks the light to form a rear display screen. Black, so that no light is incident on the human eye during this time, so that on the one hand, the intermediate state of the liquid crystal molecules during the transition between the first frame and the second frame can be avoided.
  • the image can cause the visual residue of the first frame of the retina to be "blocked” by the black image on the retina of the human eye, and then the light passes through the switching wheel 3, causing the second frame to appear on the last display screen.
  • the image such a process makes it possible to eliminate the "smear" phenomenon.
  • the type of the light source 1 may be a bulb light source, including a metal halide lamp, a high pressure mercury lamp or a xenon lamp, or a white light source formed by a blue laser or an LED to excite the screen powder, and the light source 1 is not Specifically limited.
  • the switching wheel 3 is provided with a plurality of transparent areas 32 for transmitting light between the black areas 31 for blocking light and the two adjacent black areas 31, black and white.
  • the area of the area 31 is less than or equal to the area of the transparent area 32; in one embodiment, the switching wheel 3 is provided between a plurality of black areas 31 for blocking light and two adjacent black areas 31 for The blank area 33 through which the light is transmitted, the area of the black and white area 31 is less than or equal to the area of the white area 33.
  • the switching wheel 3 is processed by spacing the black absorption layer on a transparent substrate, and the black absorption layer prevents the light from passing through the switching.
  • the structure of the wheel 3, as shown in FIG. 3, may also be the same as that of FIG. 4.
  • the transparent area 32 is not provided with any material, that is, the blank area 33; as shown in FIG. 8, there is a switching frequency between the switching wheel 3 and the chip liquid crystal.
  • the switching wheel 3 rotates through an angle, and the black area 31 blocks the light so that no light is incident on the human eye during this time period, so that the liquid crystal molecules can be avoided in the first frame on the one hand.
  • the intermediate state of the second frame is displayed when the image is displayed.
  • the visual residual of the first frame on the retina can be "blocked", so that the drag can be effectively eliminated. Shadow phenomenon, then switch wheel 3 is rotated through an angle, so that the light is in transparent area 32 or blank area 33, at this time the chip displays the image of the second frame (ie, illuminated in the Nth frame B in FIG. 8), The whole process is as shown in FIG.
  • the switching wheel 3 can also be designed such that the switching wheel 3 includes a translation device 34 and a shielding piece 35 sliding left and right on the translation device 34.
  • the shielding piece 35 is located on the optical path, and the translation device 34 is provided.
  • the control occlusion piece 35 moves at a high speed in the left-right direction of the optical path.
  • the chip displays the first frame picture, the occlusion piece 35 does not block the incident light spot, and the time occlusion piece 35 between the first frame and the second frame picture blocks the incident light.
  • the chip is an LCD chip or an Lcos chip. Of course, other chips may be used, and no specific limitation is imposed here.
  • the linearly polarized light synthesizing assembly includes a polarization converter 6 and a plurality of shaping optical elements 7, wherein the polarization converter 6 is disposed on a side of the switching wheel 3 away from the focusing lens 2, the polarization converter 6 and switching A plurality of shaping optical elements 7 are provided between the wheels 3, the shaping optical elements 7 are used to distribute the light evenly, and the polarization converter 6 forms the uniformly distributed light to form linearly polarized light.
  • the optical separation modulator includes an optical splitter for separating linearly polarized light into three different color lights and a modulator for respectively modulating light of three different colors, that is, a light separating modulator for linearly polarizing light
  • a light separating modulator for linearly polarizing light An optical splitter that separates the first light A, the second light B, and the third light C, and a first light modulator that respectively modulates the first light A, a second light modulator that modulates the second light B, and a pair A three-light C-modulated third optical modulator, in a specific embodiment, the first light A is blue light, the second light B is green light, and the third light C is red light.
  • the optical splitter of the present invention comprises a first dichroic mirror 8 and a second dichroic mirror 9, the first dichroic mirror 8 being disposed obliquely and located at a distance from the switching wheel 3 of the linear polarizing assembly.
  • the second dichroic mirror 9 is disposed in parallel with the first dichroic mirror 8 and is located on the side of the first dichroic mirror 8 away from the linearly polarized light synthesizing assembly.
  • the first dichroic mirror 8 It is disposed at a 45° inclination from the horizontal line and is located on the side of the polarization converter 6 away from the switching wheel 3.
  • the second dichroic mirror 9 is disposed at an angle of 45° to the horizontal line and is located at the first dichroic mirror 8 away from the polarization converter.
  • the linearly polarized light is incident on the first dichroic mirror 8
  • the first dichroic mirror 8 is reflected on the first light A
  • the mixed light D of the second light B and the third light C is transmitted, first
  • the light A is modulated by the first light modulator
  • the mixed light D of the second light B and the third light C is incident on the second dichroic mirror 9
  • the second dichroic mirror 9 is reflected on the second light B, to the third
  • the light C is transmitted
  • the second light B is modulated by the second light modulator
  • the third light C is modulated by the third light modulator.
  • the linearly polarized light is incident on the first dichroic mirror 8
  • the dichroic mirror 8 transmits blue light to the yellow light, that is, in the present invention, the blue light is the first light A, the yellow light is the mixed light of the second light B and the third light C, and the transmitted yellow light is incident on the first
  • the second dichroic mirror reflects the green light and transmits the red light, that is, in the present invention, the green light is the second light B, and the red light is the third light C.
  • the chip uses an LCD chip or an Lcos chip.
  • the first light modulator is the first light modulation LCD chip 10.
  • the first light modulation LCD chip 10 is a blue light modulation LCD chip, and the first dichroic color.
  • a first mirror 11 disposed parallel to the first dichroic mirror 8 is disposed above the mirror 8.
  • the first light modulating LCD chip 10 is disposed in the first mirror 11 adjacent to the second dichroic mirror 9 in the present invention.
  • the first mirror 11 is disposed at an angle of 45° to the horizontal line, and the blue light is reflected by the first mirror 11 onto the blue-light modulation LCD chip, and the blue light is modulated by the blue-light modulation LCD chip;
  • the second light modulator For the second light modulating LCD chip 20 in the present invention, the second light modulating LCD chip 20 is a green light modulating LCD chip, and the second light modulating LCD chip 20 is located above the second dichroic mirror 9, by the second The green light reflected by the color mirror 9 is modulated by the green light modulation LCD chip, and the second dichroic mirror 9 is disposed at a side away from the first dichroic mirror 8 and provided with a second parallel to the second dichroic mirror 9.
  • the third mirror 12 is close to the second dichroic mirror 9.
  • a third light modulating LCD chip 30 is disposed on one side, the third light modulating LCD chip is a red light modulating LCD chip, and red light transmitted by the second dichroic mirror 9 is reflected by the second mirror 12 and the third mirror 13 After being modulated by a red-light modulated LCD chip, the above three LCD chips The modulated image is synthesized by the beam combining mirror 4, and the light emitted from the combining mirror 4 is projected by a projection lens onto the display screen.
  • the third light modulating LCD chip 30 is disposed in parallel with the first light modulating LCD chip 10, and the second light modulating LCD chip 20 is disposed on the first light modulating LCD chip 10 and the third light modulating LCD chip 30.
  • the combining mirror 4 is disposed above the second light modulating LCD chip 20 and sandwiched between the first light modulating LCD chip 10 and the third light modulating LCD chip 30
  • the beam combining mirror 4 is used to combine images modulated by the three LCD chips into one image; the second mirror 12 is inclined at 45° with the horizontal line, and the third mirror 13 is inclined at 135° from the horizontal line.
  • the light reflected by the third mirror 13 and the light incident to the second mirror 12 are parallel to each other.
  • the first light modulator when the chip adopts the Lcos chip, the first light modulator includes a first light modulation Lcos chip 40 located above the beam combining mirror 4 and a first light modulation Lcos chip 40 and the combination mirror 4 a first polarizing beam combiner 41, a first mirror 11 adjacent to the first dichroic mirror 8 is provided with a first mirror 11 parallel to the first dichroic mirror 8, in the present invention
  • the first light modulating Lcos chip 40 is a blue modulating Lcos chip, and the blue light reflected by the first dichroic mirror 8 is reflected by the first reflecting mirror 11 onto the first polarizing beam combining mirror 41 and the blue modulating Lcos chip.
  • the second light modulator includes a second light modulation Lcos chip 50 disposed on a side of the beam combining mirror 4 adjacent to the second dichroic mirror 9 and is disposed between the second light modulation Lcos chip 50 and the combining mirror 4 and located a second polarization beam splitter mirror 51 above the second dichroic mirror 9, the second light modulation Lcos chip 50 is a green light modulation Lcos modulation chip, and the green light reflected by the second dichroic mirror 9 is incident on the second polarization
  • the combination beam mirror 51 and the green light modulation Lcos chip are modulated on the 50;
  • the third light modulator comprises a third light modulation Lcos chip 60 located below the beam combining mirror 4 and a third light modulation Lcos chip 60 and a combination A third polarization beam combining mirror 61 between the mirrors 4, the third polarization beam combining mirror 61 is located on a side of the second dichroic mirror 9 away from the first dichroic mirror 8, in the present invention, the third light The modul
  • the switching frequency of the switching wheel 3 and the LCD chip or the Lcos chip (hereinafter simply referred to as LCD/Lcos chip) liquid crystal (ie, the time t-image display process diagram in FIG. 8)
  • LCD/Lcos chip liquid crystal
  • the final light The line can be incident on the LCD/Lcos chip, and the LCD/Lcos chip modulates to form an image of the first frame; when the LCD/Lcos chip displays the second frame, there is a liquid crystal response time between the first frame and the second frame. T1, within this response time t1, the switching wheel 3 rotates through an angle, and the black area 31 blocks the light so that no light is incident on the human eye during this time period, so that the liquid crystal molecules can be avoided in the first frame on the one hand. And the intermediate state of the second frame is displayed when the image is displayed. On the other hand, since a black image appears on the retina of the human eye, the visual residual of the first frame on the retina can be "blocked", so that the drag can be effectively eliminated.
  • the black area 31 and The area of the transparent region 32 has a certain correspondence relationship, if the refresh rate of the display screen and the response time t1 of the pixel (including the address time t2 of the frame) are the same, the area ratio of the black area 31 and the transparent area 32 (or the blank area 33) is ⁇ 1, when When this value is equal to 1, it is equivalent to completely eliminating the "smear” phenomenon caused by the slow response of the liquid crystal molecules in the LCD/Lcos chip, and the "smear” phenomenon caused by the residual vision of the human eye. If this value is ⁇ 1, it is equivalent to partially eliminating the "smear” phenomenon caused by the slow response of the liquid crystal molecules in the chip and completely eliminating the "smear” phenomenon caused by the residual vision of the human eye.
  • the present invention is configured such that the light passing through the focus lens 2 is intermittently blocked or intermittently passed through the switching wheel 3 by the switching wheel 2, and the light formed by the focusing lens 2 is blocked for less than or equal to the light formed by the transmission focusing lens 2.
  • the "smear" phenomenon caused by residual eye vision can improve the picture quality and increase the viewing experience.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Projection Apparatus (AREA)

Abstract

一种投影仪，包括光源（1）；在光源（1）一侧的聚焦透镜（2）；间隔地阻挡或透射聚焦透镜（2）形成的光线且在聚焦透镜（2）一侧的切换轮（3），阻挡聚焦透镜（2）形成的光线的时间小于或等于透射聚焦透镜（2）形成的光线的时间；使透射过切换轮（3）的光线形成线偏振光且在切换轮（3）一侧的线偏振光合成组件；将所述线偏振光分离出多种颜色光并对多种颜色光调制且在线偏振光合成组件一侧的光分离调制器；调制后的多种颜色光会合的合束镜（4）；设在合束镜（4）一侧的投影镜头（5）。其能够可以提高画面质量，增加观赏体验的效果。

Description

一种投影仪
相关申请的交叉引用
本申请要求享有于2016年8月22日提交的名称为“一种投影仪”的中国专利申请CN201610698752.9的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本发明涉及影像处理技术领域，特别涉及一种投影仪。
背景技术
传统的投影仪只是用于办公场合，通常只是显示静止的画面，这样画面就不会出现因为LCD/LCoS芯片中液晶响应速度慢和人眼本身具有的视觉残留现象而导致的动态画面的“拖影”现象。但是近年来投影仪开始用于家庭影院，如果家庭影院所用的投影芯片是LCD/LCoS芯片，那么由于动态画面而出现“拖影”现象相比于DMD芯片会比较严重，但是DMD芯片即使相应速度再快，由于人眼的视觉残留现象所以只是从提高响应速度方面考虑无法从根本上去除动态画面的“拖影”现象。
“拖影”现象主要由两种原因引起，第一种是液晶的响应有一定的时间，从上一幅图像转换到下一幅图像的时候会有液晶分子的中间态存在，这个中间态会造成图像的模糊；第二种原因是人眼有视觉残留效应，图像在人眼的视网膜上残留的时间为10-12ms，这样第一和第二幅图像就会产生重叠，从而造成图像的模糊。
目前在液晶面板中解决“拖影”的方式有两种，一种是通过提升刷新频率，将原来的刷新频率翻倍，在原来两个帧之间插入一个黑画面(即插黑)；另外一种是通过关闭背光源在两个帧之间插入黑画面。
关闭背光源插入黑画面的目的有两个：一是在液晶分子处于第一帧和第二帧的中间态时不显示图像，这样就不会有处于中间态的液晶分子显示图像；二是切断第一帧在人眼视网膜上的视觉残留，第一帧的图像叠加上一个黑画面就可以切断视觉残留。
为解决“拖影”现象，有必要提供一种新的投影仪。
发明内容
为解决上述问题，本发明提出了一种投影仪，其结构简单，在投影显示中，该投影仪可以达到用一种简单的方法解决“拖影”现象，从而提高画面质量，增加观赏体验的效果。
为实现上述目的，本发明提出一种投影仪，其中，所述投影仪包括：
光源；
聚焦透镜，设置在所述光源的一侧；
用于间隔地阻挡或透射所述聚焦透镜形成的光线的切换轮，且阻挡所述聚焦透镜形成的光线的时间小于或等于透射所述聚焦透镜形成的光线的时间，所述切换轮设在所述聚焦透镜远离所述光源的一侧；
用于使透射过所述切换轮的光线形成线偏振光的线偏振光合成组件，所述线偏振光合成组件设在所述切换轮远离所述聚焦透镜的一侧；
用于将所述线偏振光分离出多种颜色光并对分离出的多种颜色光调制的光分离调制器，所述光分离调制器设在所述线偏振光合成组件远离所述切换轮的一侧；
用于使调制后的多种颜色光会合在一起并形成出射光线的合束镜；
投影镜头，设在所述合束镜远离所述光分离调制器的一侧。
如上所述的投影仪，其中，所述线偏振光合成组件包括：
偏振光转换器，设在所述切换轮远离所述聚焦透镜的一侧；
所述偏振光转换器和所述切换轮之间设有多个整形光学元件。
如上所述的投影仪，其中，所述光分离调制器包括用于分离出第一光、第二光和第三光的光分离器及分别对所述第一光调制的第一光调制器、对所述第二光调制的第二光调制器和对所述第三光调制的第三光调制器。
如上所述的投影仪，其中，所述光分离器包括第一二向色镜和第二二向色镜，所述第一二向色镜倾斜设置且位于所述线偏振光合成组件远离所述切换轮的一侧，所述第二二向色镜与所述第一二向色镜平行设置且位于所述第一二向色镜远离所述线偏振光合成组件的一侧。
如上所述的投影仪，其中，所述第一光调制器为第一光调制LCD芯片，所 述第一二向色镜的上方设有与所述第一二向色镜平行设置的第一反射镜，所述第一光调制LCD芯片设在所述第一反射镜靠近所述第二二向色镜的一侧。
如上所述的投影仪，其中，所述第二光调制器为第二光调制LCD芯片，所述第二光调制LCD芯片位于所述第二二向色镜的上方，所述第二二向色镜远离所述第一二向色镜的一侧设有与所述第二二向色镜平行设置的第二反射镜，所述第二反射镜上方设有与所述第二反射镜交错设置的第三反射镜且所述第三反射镜反射形成的光线与入射到所述第二反射镜的光线平行，所述第三反射镜靠近所述第二二向色镜的一侧设有第三光调制LCD芯片，所述第三光调制LCD芯片与所述第一光调制LCD芯片平行设置，所述第二光调制LCD芯片夹设在所述第一光调制LCD芯片与所述第三光调制LCD芯片之间且与所述第一光调制LCD芯片垂直设置，所述合束镜设在所述第二光调制LCD芯片的上方且位于所述第一光调制LCD芯片与所述第三光调制LCD芯片之间。
如上所述的投影仪，其中，所述第一光调制器包括位于所述合束镜的上方的第一光调制Lcos芯片和设置在所述第一光调制Lcos芯片与所述合束镜之间的第一偏振合束镜，所述第一偏振合束镜靠近所述第一二向色镜的一侧设有与所述第一二向色镜相平行的第一反射镜。
如上所述的投影仪，其中，所述第二光调制器包括设在所述合束镜靠近所述第二二向色镜的一侧的第二光调制Lcos芯片及设在所述第二光调制Lcos芯片与所述合束镜之间且位于所述第二二向色镜上方的第二偏振合束镜，所述第三光调制器包括位于所述合束镜下方的第三光调制Lcos芯片及设在所述第三光调制Lcos芯片与所述合束镜之间的第三偏振合束镜，所述第三偏振合束镜位于所述第二二向色镜远离所述第一二向色镜的一侧。
如上所述的投影仪，其中，所述切换轮包括多个用于阻挡光线的黑色区及两两相邻的两个所述黑色区之间设有用于使光线透过的透明区或空白区，所述黑白区的面积小于或等于所述透明区或所述白色区的面积。
如上所述的投影仪，其中，所述切换轮包括平动装置及在所述平动装置上左右移动地用于遮挡或透过光线的遮挡片。
本发明的投影仪，在投影显示中，用一种比较简单的方法解决“拖影”现象，同时可以达到减轻由于LCD/Lcos芯片中液晶的响应速度慢以及由于人眼视觉残留现象(包括响应速度很快的DMD芯片)而导致的“拖影”现象，从而可以提 高画面质量，增加观赏体验的效果。
附图说明
在下文中将基于实施例并参考附图来对本发明进行更详细的描述。其中：
图1为本发明的投影仪的示意图(一)；
图2为本发明的投影仪的示意图(二)；
图3为本发明的投影仪的切换轮的结构示意图(一)；
图4为本发明的投影仪的切换轮的结构示意图(二)
图5为本发明的投影仪的切换轮的结构示意图(三)的第一状态图；
图6为本发明的投影仪的切换轮的结构示意图(三)的第二状态图；
图7为本发明的投影仪的切换轮的结构示意图(三)的第三状态图；
图8为本发明的切换轮转速与芯片液晶的切换频率之间的关系图。
在附图中，相同的部件使用相同的附图标记。附图并未按照实际的比例。
具体实施方式
结合附图和本发明具体实施方式的描述，能够更加清楚地了解本发明的细节。但是，在此描述的本发明的具体实施方式，仅用于解释本发明的目的，而不能以任何方式理解成是对本发明的限制。在本发明的教导下，技术人员可以构想基于本发明的任意可能的变形，这些都应被视为属于本发明的范围，下面将结合附图对本发明作进一步说明。
图1至图8分别为本发明的投影仪的示意图(一)、投影仪的示意图(二)、切换轮的结构示意图(一)、切换轮的结构示意图(二)、切换轮的结构示意图(三)的第一状态图、切换轮的结构示意图(三)的第二状态图、切换轮的结构示意图(三)的第三状态图和切换轮转速与芯片液晶的切换频率之间的关系图。
如图1和图2所示，本发明的投影仪包括：光源1、聚焦透镜2、切换轮3、线偏振光合成组件、光分离调制器、合束镜4和投影镜头5，其中，聚焦透镜2设置在光源1的一侧，切换轮3可以间隔地阻挡或透射穿过聚焦透镜2的光线，也即，穿过聚焦透镜2的光线间隔地被切换轮2阻挡或间隔地穿过切换轮3，且阻挡聚焦透镜2形成的光线的时间小于或等于透射聚焦透镜2形成的光线的时间，切换轮3设在聚焦透镜2远离光源1的一侧，线偏振光合成组件可以使透射 过切换轮的光线形成线偏振光，线偏振光合成组件设在切换轮3远离聚焦透镜2的一侧，光分离调制器用于将线偏振光分离出多种不同颜色光并对分离出的该多种不同颜色光进行调制，光分离调制器设在线偏振光合成组件远离切换轮3的一侧，合束镜4用于将调制后的多种不同颜色的光会合在一起并形成出射光线，投影镜头5设在合束镜4远离光分离调制器的一侧。
本发明的投影仪的工作过程为：光源1发出的白光经过聚焦透镜2，聚焦透镜2用于够使白光中的发散光去除，穿过聚焦透镜2的光线穿过切换轮3，切换轮3用于间隔地阻挡穿过聚焦透镜2的光线，同时间隔地使穿过聚焦透镜2的光线透射过切换轮3，且阻挡聚焦透镜2形成的光线的时间小于或等于透射聚焦透镜2形成的光线的时间，线偏振光合成组件将穿过切换轮3的光线整合成线偏振光，光分离调制器将线偏振光分离出多种不同颜色的光，并分别对多种不同颜色的光进行调制，调制之后的多种不同颜色光被合束镜4会合在一起并形成出射光线，最后出射光线由投影镜头5把图像射到显示屏幕上，切换轮3通过阻挡光线，使后面的显示屏幕上形成黑色，这样在这段时间内没有光线入射到人眼，这样一方面可以避免液晶分子在第一帧和第二帧之间的转换时的中间态显示图像，另一方面由于人眼的视网膜上出现黑色的画面，可以“阻断”视网膜上第一帧画面的视觉残留，然后光线透过切换轮3，使在最后的显示屏幕上呈现第二帧的图像，这样的过程使就可以消除“拖影”现象。
在本发明中，光源1的种类可以为灯泡光源，包括金属卤素灯、高压汞灯或疝灯，也可以是由蓝色激光或者LED激发荧屏粉而形成的白色光源，在此不对光源1做具体地限制。
如图3所示，本发明中，切换轮3由多个用于阻挡光线的黑色区31及两两相邻的两个黑色区31之间设有用于使光线透过的透明区32，黑白区31的面积小于或等于透明区32的面积；在一种实施方式中，切换轮3由多个用于阻挡光线的黑色区31及两两相邻的两个黑色区31之间设有用于使光线透过的空白区33，黑白区31的面积小于或等于白色区33的面积，切换轮3的加工方式为在一个透明基板上间隔地图上黑色吸收层，黑色吸收层阻止光线穿过切换轮3，其结构如图3所示，也可以像图4一样，透明区32不设置任何材料，即为空白区33；如图8所示，切换轮3与芯片液晶的切换频率之间有一定的关系，当芯片显示第一帧时(即图8中照亮第N-1帧A所示)，光源1的出射光线透射过切换轮3的透 明区32或者空白区33，最终光线可以入射到芯片上，由芯片调制形成第一帧的图像；在芯片显示第二帧画面时，第一帧和第二帧之间有一个液晶的响应时间t1，在这个响应时间t1之内，切换轮3转过一个角度，黑色区31把光线遮挡住，这样在这个时间段就没有光线入射到人眼，这样一方面可以避免液晶分子在第一帧和第二帧的转换时的中间态显示图像，另外一方面由于人眼的视网膜上出现一个黑色的画面，可以“阻断”视网膜上第一帧画面的视觉残留，这样就可以有效消除“拖影”现象，然后切换轮3又转过一个角度，使得光线处于透明区32或者空白区33，此时的芯片显示第二帧的图像(即图8中照亮第N帧B所示)，整个过程如图4所示，其中黑色区31和透明区32(或空白区33)的面积具有一定的对应关系，如果显示屏幕的刷新频率和像素的响应时间t1(包括帧的寻址时间t2)相同，那么黑色区31和透明区32(或空白区33)的面积比为≤1，当这个数值等于1的时候，相当于完全消除了芯片中由于液晶分子响应速度慢而导致的“拖影”现象，和人眼视觉残留而造成的“拖影”现象。如果这个数值＜1，那么相当于部分消除了芯片中由于液晶分子响应速度慢而导致的“拖影”现象，和完全消除人眼视觉残留而造成的“拖影”现象。
当然，如图5-7所示，切换轮3也可以设计为切换轮3包括平动装置34和在平动装置34上左右滑动地遮挡片35，遮挡片35位于光路上，平动装置34控制遮挡片35在光路的左右方向上高速移动，当芯片显示第一帧画面时，遮挡片35不遮挡入射光点，在第一帧和第二帧画面之间的时间遮挡片35挡住入射光点，当显示第二帧时又不遮挡入射光点，在本发明中芯片采用LCD芯片或Lcos芯片，当然也可采用其他芯片，在此不做具体限制。
在本发明中，线偏振光合成组件包括偏振光转换器6和多个整形光学元件7，其中，偏振光转换器6设在切换轮3远离聚焦透镜2的一侧，偏振光转换器6和切换轮3之间设有多个整形光学元件7，整形光学元件7用于把光线使光线分布均匀，偏振光转化器6将分布均匀的光线形成线偏振光。
在本发明中，光分离调制器包括用于把线偏振光分离出三种不同颜色光的光分离器及分别对三种不同颜色光调制的调制器，即光分离调制器用于把线偏振光分离出第一光A、第二光B和第三光C的光分离器及分别对第一光A调制的第一光调制器、对第二光B调制的第二光调制器和对第三光C调制的第三光调制器，在一具体的实施方式中，第一光A为蓝光、第二光B为绿光及第三光C为红光。
在一具体实施方式中，本发明的光分离器包括第一二向色镜8和第二二向色镜9，第一二向色镜8倾斜设置且位于线偏光合成组件远离切换轮3的一侧，第二二向色镜9与第一二向色镜8平行设置且位于第一二向色镜8远离线偏振光合成组件的一侧，在本发明中，第一二向色镜8与水平线呈45°倾斜设置且位于偏振光转换器6远离切换轮3的一侧，第二二向色镜9与水平线呈45°倾斜设置且位于第一二向色镜8远离偏振光转换器6的一侧，线偏振光入射到第一二向色镜8，第一二向色镜8对第一光A反射，对第二光B和第三光C的混合光D透射，第一光A被第一光调制器调制，第二光B和第三光C的混合光D入射到第二二向色镜9，第二二向色镜9对第二光B反射，对第三光C透射，第二光B被第二光调制器调制，第三光C被第三光调制器调制，在本发明中，线偏振光入射到第一二向色镜8，第一二向色镜8对蓝光反射对黄光透射，即在本发明中蓝光为第一光A，黄光为第二光B和第三光C的混合光，透射的黄光光线入射到第二二向色镜9上，第二二向色镜对绿光反射，对红光透射，即在本发明中绿光为第二光B，红光为第三光C。
在本发明中，芯片采用LCD芯片或Lcos芯片。
如图1所示，当芯片采用LCD芯片时，第一光调制器为第一光调制LCD芯片10，在本发明中，第一光调制LCD芯片10为蓝光调制LCD芯片，第一二向色镜8上方设有与该第一二向色镜8平行设置的第一反射镜11，第一光调制LCD芯片10设在本发明中第一反射镜11靠近第二二向色镜9的一侧，在本发明中，第一反射镜11与水平线呈45°倾斜设置，蓝光经第一反射镜11反射到蓝光调制LCD芯片上，经蓝光调制LCD芯片对蓝光进行调制；第二光调制器为第二光调制LCD芯片20，在本发明中，第二光调制LCD芯片20为绿光调制LCD芯片，第二光调制LCD芯片20位于第二二向色镜9的上方，由第二二向色镜9反射的绿光被绿光调制LCD芯片调制，在第二二向色镜9远离第一二向色镜8的一侧设有与第二二向色镜9平行设置的第二反射镜12，第二反射镜12上方设有与第二反射镜12交错设置的第三反射镜13且第三反射镜13反射形成的光线与入射到第二反射镜12的光线平行，第三光调制器为第三光调制LCD芯片30，具体地，第三反射镜12靠近第二二向色镜9的一侧设有第三光调制LCD芯片30，第三光调制LCD芯片为红光调制LCD芯片，由第二二向色镜9透射的红光由第二反射镜12和第三反射镜13反射后被红光调制LCD芯片调制，由上述三个LCD芯片 调制的图像由合束镜4合成一副图像，合束镜4出射的光线由一个投影镜头把图像射到显示屏幕上。在一具体实施例中，第三光调制LCD芯片30与第一光调制LCD芯片10平行设置，第二光调制LCD芯片20夹设在第一光调制LCD芯片10与第三光调制LCD芯片30之间且与第一光调制LCD芯片10垂直设置，合束镜4设在第二光调制LCD芯片20的上方且夹设在第一光调制LCD芯片10与第三光调制LCD芯片30之间，通过这样的设置合束镜4用于使三个LCD芯片调制的图像合成一副图像；第二反射镜12与水平线呈45°倾斜设置，第三反射镜13与水平线呈135°倾斜设置，从而实现第三反射镜13反射形成的光线与入射到第二反射镜12的光线相互平行。
如图2所示，当芯片采用Lcos芯片时，第一光调制器包括位于合束镜4的上方的第一光调制Lcos芯片40和设置在第一光调制Lcos芯片40与合束镜4之间的第一偏振合束镜41，第一偏振合束镜41靠近第一二向色镜8的一侧设有与第一二向色镜8相平行的第一反射镜11，在本发明中第一光调制Lcos芯片40为蓝光调制Lcos芯片，经第一二向色镜8反射的蓝光被第一反射镜11反射到第一偏振合束镜41和蓝光调制Lcos芯片上被进行调制。
第二光调制器包括设在合束镜4靠近第二二向色镜9的一侧的第二光调制Lcos芯片50及设在第二光调制Lcos芯片50与合束镜4之间且位于第二二向色镜9上方的第二偏振合束镜51，第二光调制Lcos芯片50为绿光调制Lcos调制芯片，由第二二向色镜9反射的绿光入射到到第二偏振合束镜51和绿光调制Lcos芯片上50上被进行调制；第三光调制器包括位于合束镜4下方的第三光调制Lcos芯片60及设在第三光调制Lcos芯片60与合束镜4之间的第三偏振合束镜61，第三偏振合束镜61位于第二二向色镜9远离所述第一二向色镜8的一侧，在本发明中，第三光调制Lcos芯片为红光调制Lcos芯片，由第二二向色镜9透射的红光入射到到第三偏振合束镜61和红光调制Lcos芯片上60上被进行调制，三个芯片调制的图像由一个合束镜4合为一幅图像，合束镜4出射的光线由一个透射镜头把图像透射到显示屏幕上。
如图8所示，在本发明中，切换轮3与LCD芯片或Lcos芯片(后简称为LCD/Lcos芯片)液晶的切换频率(即图8中的时间t-图像显示过程关系图所示)之间有一定的关系，当LCD/Lcos芯片显示第一帧时(即图8中照亮第N-1帧A所示)，光源1的出射光线透射过切换轮3的透明区32或者空白区33，最终光 线可以入射到LCD/Lcos芯片上，由LCD/Lcos芯片调制形成第一帧的图像；在LCD/Lcos芯片显示第二帧画面时，第一帧和第二帧之间有一个液晶的响应时间t1，在这个响应时间t1之内，切换轮3转过一个角度，黑色区31把光线遮挡住，这样在这个时间段就没有光线入射到人眼，这样一方面可以避免液晶分子在第一帧和第二帧的转换时的中间态显示图像，另外一方面由于人眼的视网膜上出现一个黑色的画面，可以“阻断”视网膜上第一帧画面的视觉残留，这样就可以有效消除“拖影”现象，然后切换轮3又转过一个角度，使得光线处于透明区32或者空白区33，此时的LCD/Lcos芯片显示第二帧的图像(即图8中照亮第N帧B所示)，再进行一个过程，即达到LCD/Lcos芯片显示第三帧的图像(即图8中照亮第N+1帧C所示)，整个过程如图4所示，其中黑色区31和透明区32(或空白区33)的面积具有一定的对应关系，如果显示屏幕的刷新频率和像素的响应时间t1(包括帧的寻址时间t2)相同，那么黑色区31和透明区32(或空白区33)的面积比为≤1，当这个数值等于1的时候，相当于完全消除了LCD/Lcos芯片中由于液晶分子响应速度慢而导致的“拖影”现象，和人眼视觉残留而造成的“拖影”现象。如果这个数值＜1，那么相当于部分消除了芯片中由于液晶分子响应速度慢而导致的“拖影”现象和完全消除人眼视觉残留而造成的“拖影”现象。
本发明通过如下方案，穿过聚焦透镜2的光线间隔地被切换轮2阻挡或间隔地穿过切换轮3，且阻挡聚焦透镜2形成的光线的时间小于或等于透射聚焦透镜2形成的光线的时间，且切换轮3与LCD/Lcos芯片液晶的切换频率之间的特定关系的设计，从而消除了“拖影”现象，即可以达到减轻由于LCD/Lcos芯片中液晶的响应速度慢以及由于人眼视觉残留现象(包括响应速度很快的DMD芯片)而导致的“拖影”现象，从而可以提高画面质量，增加观赏体验的效果。
虽然已经参考优选实施例对本发明进行了描述，但在不脱离本发明的范围的情况下，可以对其进行各种改进并且可以用等效物替换其中的部件。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本发明并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。
附图标记说明：
1-光源；2-聚焦透镜；3-切换轮；31-黑色区；32-透明区；33-空白区；34-平 动装置；35-遮挡片；4-合束镜；5-投影镜头；6-偏振光转换器；7-整形光学元件；8-第一二向色镜；9-第二二向色镜；10-第一光调制LCD芯片；11-第一反射镜；12-第二反射镜；13-第三反射镜；20-第二光调制LCD芯片；30-第三光调制LCD芯片；40-第一光调制Lcos芯片；41-第一偏振合束镜；50-第二光调制Lcos芯片；51-第二偏振合束镜；60-第三光调制Lcos芯片；61-第三偏振合束镜；t-时间；t1-像素相应时间；t2-寻址时间；A-照亮第N-1帧；B-照亮第N帧；C-照亮第N+1帧。

Claims (10)

  1. 一种投影仪，其中，所述投影仪包括：
    光源；
    聚焦透镜，设置在所述光源的一侧；
    用于间隔地阻挡或透射所述聚焦透镜形成的光线的切换轮，且阻挡所述聚焦透镜形成的光线的时间小于或等于透射所述聚焦透镜形成的光线的时间，所述切换轮设在所述聚焦透镜远离所述光源的一侧；
    用于使透射过所述切换轮的光线形成线偏振光的线偏振光合成组件，所述线偏振光合成组件设在所述切换轮远离所述聚焦透镜的一侧；
    用于将所述线偏振光分离出多种颜色光并对分离出的多种颜色光调制的光分离调制器，所述光分离调制器设在所述线偏振光合成组件远离所述切换轮的一侧；
    用于使调制后的多种颜色光会合在一起并形成出射光线的合束镜；
    投影镜头，设在所述合束镜远离所述光分离调制器的一侧。
  2. 如权利要求1所述的投影仪，其中，所述线偏振光合成组件包括：
    偏振光转换器，设在所述切换轮远离所述聚焦透镜的一侧；
    所述偏振光转换器和所述切换轮之间设有多个整形光学元件。
  3. 如权利要求1所述的投影仪，其中，所述光分离调制器包括用于分离出第一光、第二光和第三光的光分离器及分别对所述第一光调制的第一光调制器、对所述第二光调制的第二光调制器和对所述第三光调制的第三光调制器。
  4. 如权利要求3所述的投影仪，其中，所述光分离器包括第一二向色镜和第二二向色镜，所述第一二向色镜倾斜设置且位于所述线偏振光合成组件远离所述切换轮的一侧，所述第二二向色镜与所述第一二向色镜平行设置且位于所述第一二向色镜远离所述线偏振光合成组件的一侧。
  5. 如权利要求4所述的投影仪，其中，所述第一光调制器为第一光调制LCD芯片，所述第一二向色镜的上方设有与所述第一二向色镜平行设置的第一反射镜，所述第一光调制LCD芯片设在所述第一反射镜靠近所述第二二向色镜的一侧。
  6. 如权利要求5所述的投影仪，其中，所述第二光调制器为第二光调制LCD 芯片，所述第二光调制LCD芯片位于所述第二二向色镜的上方，所述第二二向色镜远离所述第一二向色镜的一侧设有与所述第二二向色镜平行设置的第二反射镜，所述第二反射镜上方设有与所述第二反射镜交错设置的第三反射镜且所述第三反射镜反射形成的光线与入射到所述第二反射镜的光线平行，所述第三反射镜靠近所述第二二向色镜的一侧设有第三光调制LCD芯片，所述第三光调制LCD芯片与所述第一光调制LCD芯片平行设置，所述第二光调制LCD芯片夹设在所述第一光调制LCD芯片与所述第三光调制LCD芯片之间且与所述第一光调制LCD芯片垂直设置，所述合束镜设在所述第二光调制LCD芯片的上方且位于所述第一光调制LCD芯片与所述第三光调制LCD芯片之间。
  7. 如权利要求4所述的投影仪，其中，所述第一光调制器包括位于所述合束镜的上方的第一光调制Lcos芯片和设置在所述第一光调制Lcos芯片与所述合束镜之间的第一偏振合束镜，所述第一偏振合束镜靠近所述第一二向色镜的一侧设有与所述第一二向色镜相平行的第一反射镜。
  8. 如权利要求7所述的投影仪，其中，所述第二光调制器包括设在所述合束镜靠近所述第二二向色镜的一侧的第二光调制Lcos芯片及设在所述第二光调制Lcos芯片与所述合束镜之间且位于所述第二二向色镜上方的第二偏振合束镜，所述第三光调制器包括位于所述合束镜下方的第三光调制Lcos芯片及设在所述第三光调制Lcos芯片与所述合束镜之间的第三偏振合束镜，所述第三偏振合束镜位于所述第二二向色镜远离所述第一二向色镜的一侧。
  9. 如权利要求1所述的投影仪，其中，所述切换轮包括多个用于阻挡光线的黑色区及两两相邻的两个所述黑色区之间设有用于使光线透过的透明区或空白区，所述黑白区的面积小于或等于所述透明区或所述白色区的面积。
  10. 如权利要求1所述的投影仪，其中，所述切换轮包括平动装置及在所述平动装置上左右移动地用于遮挡或透过光线的遮挡片。
PCT/CN2016/100590 2016-08-22 2016-09-28 一种投影仪 Ceased WO2018035926A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/324,489 US20180180977A1 (en) 2016-08-22 2016-09-28 Projector

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610698752.9A CN106249519A (zh) 2016-08-22 2016-08-22 一种投影仪
CN201610698752.9 2016-08-22

Publications (1)

Publication Number Publication Date
WO2018035926A1 true WO2018035926A1 (zh) 2018-03-01

Family

ID=57593167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/100590 Ceased WO2018035926A1 (zh) 2016-08-22 2016-09-28 一种投影仪

Country Status (3)

Country Link
US (1) US20180180977A1 (zh)
CN (1) CN106249519A (zh)
WO (1) WO2018035926A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106842551A (zh) * 2016-12-28 2017-06-13 深圳市华星光电技术有限公司 一种色轮以及包含色轮的时序投影仪
CN110677632A (zh) * 2019-10-12 2020-01-10 广东联大光电有限公司 一种提高投影图像颜色均匀性的dlp投影仪
CN110677633A (zh) * 2019-10-12 2020-01-10 广东联大光电有限公司 一种可以消除色偏差的dlp投影仪
CN116382017B (zh) * 2021-12-15 2025-09-26 极米科技股份有限公司 投影设备和智能交互方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002148712A (ja) * 2000-11-14 2002-05-22 Seiko Epson Corp 投射型液晶表示装置
JP2002318562A (ja) * 2001-04-23 2002-10-31 Canon Inc 投射型表示装置
CN1591162A (zh) * 2003-09-02 2005-03-09 精工爱普生株式会社 投影机
CN1624570A (zh) * 2003-12-03 2005-06-08 精工爱普生株式会社 投影机
CN1648764A (zh) * 2004-01-26 2005-08-03 精工爱普生株式会社 投影机
CN1723415A (zh) * 2003-09-10 2006-01-18 松下电器产业株式会社 投影式显示装置
CN1746764A (zh) * 2004-09-08 2006-03-15 精工爱普生株式会社 投影机
CN102955336A (zh) * 2011-08-18 2013-03-06 精工爱普生株式会社 投影型显示装置及其控制方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003083573A1 (en) * 2002-03-28 2003-10-09 Sanyo Electric Co., Ltd. Projection type image display unit and lighting device
US7107568B2 (en) * 2002-10-07 2006-09-12 Hewlett-Packard Development Company, Lp. System and method for reducing wire delay or congestion during synthesis of hardware solvers
JP4111154B2 (ja) * 2004-03-11 2008-07-02 セイコーエプソン株式会社 プロジェクタ
TWI279637B (en) * 2005-06-22 2007-04-21 Benq Corp Projector and color filter thereof
EP1901364A1 (en) * 2005-07-06 2008-03-19 Idemitsu Kosan Co., Ltd. Organic electroluminescent device
US8820937B2 (en) * 2010-08-17 2014-09-02 Lc-Tec Displays Ab Optical polarization state modulator assembly for use in stereoscopic three-dimensional image projection system
CN201765425U (zh) * 2010-09-15 2011-03-16 伍振弋 一种lcos液晶投影系统及装置
CN201926855U (zh) * 2011-01-30 2011-08-10 河南科技大学 一种三片式lcos激光投影显示用光学引擎
JP2014115556A (ja) * 2012-12-12 2014-06-26 Seiko Epson Corp プロジェクター
CN203688977U (zh) * 2013-08-06 2014-07-02 昆明理工大学 一种基于平板电脑/手机的lcos投影装置
US10372023B2 (en) * 2014-09-05 2019-08-06 The Boeing Company High efficiency motion blur reduction

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002148712A (ja) * 2000-11-14 2002-05-22 Seiko Epson Corp 投射型液晶表示装置
JP2002318562A (ja) * 2001-04-23 2002-10-31 Canon Inc 投射型表示装置
CN1591162A (zh) * 2003-09-02 2005-03-09 精工爱普生株式会社 投影机
CN1723415A (zh) * 2003-09-10 2006-01-18 松下电器产业株式会社 投影式显示装置
CN1624570A (zh) * 2003-12-03 2005-06-08 精工爱普生株式会社 投影机
CN1648764A (zh) * 2004-01-26 2005-08-03 精工爱普生株式会社 投影机
CN1746764A (zh) * 2004-09-08 2006-03-15 精工爱普生株式会社 投影机
CN102955336A (zh) * 2011-08-18 2013-03-06 精工爱普生株式会社 投影型显示装置及其控制方法

Also Published As

Publication number Publication date
CN106249519A (zh) 2016-12-21
US20180180977A1 (en) 2018-06-28

Similar Documents

Publication Publication Date Title
TWI228634B (en) Image display apparatus and projector
KR920010809B1 (ko) Lcd 프로젝터의 광학 시스템
CN101095184B (zh) 图像显示设备和图像投影设备
US7825363B2 (en) Micro lens array unit having at least one of first and second micro lens arrays movable for changing the effective focal length of the micro lens array unit and liquid crystal display projection device using same
JP4357553B2 (ja) 照明装置及び投写型映像表示装置
WO2018035926A1 (zh) 一种投影仪
JP2505758B2 (ja) ビデオ・プロジエクシヨン装置
US20180180979A1 (en) Projection device and projection system
CN114185234A (zh) 高色域覆盖率3lcd投影装置
EP2963493B1 (en) Image projection device
JP2007271828A (ja) 立体画像投射装置
JP3310487B2 (ja) 液晶表示装置
CN105045019B (zh) 一种dlp偏光式立体投影装置
TW201337436A (zh) 用於一投影裝置之色輪模組、投影裝置、以及切換顯示一立體影像或一平面影像之方法
JP4966997B2 (ja) 照明装置及び投写型映像表示装置
US8342689B2 (en) Split scrolling illumination for light modulator panels
JP4335664B2 (ja) 投射型映像表示装置、背面投射型映像表示装置、光学ユニット及びスクリーンユニット
JP2006235161A (ja) プロジェクタ
JP3640367B2 (ja) 液晶ビデオプロジェクタ
JPH02309388A (ja) 投射型表示装置
JP2009288387A (ja) 投射型表示装置
JPH05281501A (ja) 液晶投写形ディスプレイ装置
JP2006349713A (ja) プロジェクタ
JP2005301139A (ja) 映像拡大装置
US20130070067A1 (en) Projection System Generating 3D Images

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 15324489

Country of ref document: US

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16913946

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16913946

Country of ref document: EP

Kind code of ref document: A1