WO2011155041A1 - プロジェクターおよびその制御方法 - Google Patents
プロジェクターおよびその制御方法 Download PDFInfo
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- WO2011155041A1 WO2011155041A1 PCT/JP2010/059840 JP2010059840W WO2011155041A1 WO 2011155041 A1 WO2011155041 A1 WO 2011155041A1 JP 2010059840 W JP2010059840 W JP 2010059840W WO 2011155041 A1 WO2011155041 A1 WO 2011155041A1
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- WIPO (PCT)
- Prior art keywords
- light receiving
- projection lens
- unit
- receiving surface
- projector
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- 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
- G03B21/142—Adjusting of projection optics
Definitions
- a projector described in Patent Document 1 includes a light modulation element, a projection lens that projects image light generated by the light modulation element on a screen, and a lens shift unit that translates the projection lens in a direction orthogonal to the optical axis thereof. And a light receiving unit that receives a control signal (infrared ray) from the remote controller, and a control unit that controls the operation of each unit of the projector in accordance with the control signal received by the light receiving unit.
- the light receiving surface of the light receiving unit is directed in a direction in which an image is projected by the projection lens.
- the lens shift unit when the lens shift unit translates the projection lens, the positional relationship between the light modulation element and the projection lens changes, and as a result, the projected image on the screen corresponds to the direction in which the projection lens moves. Move to. For example, when the screen is viewed from the back of the projector, if the projection lens moves in the right direction, the projected image also moves in the right direction.
- the projected image can be moved in the horizontal direction and the vertical direction by lens shift from about 1/2 screen to about 1 screen.
- the control signal from the remote controller may be directly received by the light receiving unit, or the control signal from the remote controller may be reflected by the screen and the reflected control signal may be received by the light receiving unit. .
- the operator performs an input operation with the remote controller facing the light receiving unit of the projector.
- the operator performs an input operation with the remote controller facing the screen.
- the control unit performs necessary control according to the control signal received by the light receiving unit. In this way, the operation by the remote controller is performed.
- Patent Document 2 describes a projector that does not have a lens shift function but can be operated by a remote controller.
- a projector described in Patent Document 2 includes a light receiving unit that receives a control signal (infrared rays) from a remote controller, a light receiving unit that is rotatably supported, and a drive unit that adjusts the inclination angle of the light receiving surface with respect to the horizontal direction.
- An inclination angle detecting means for detecting the inclination angle of the light receiving unit, and a control unit for performing control according to the control signal received by the light receiving unit.
- the control unit holds a table storing data indicating the relationship of the inclination angle of the light receiving unit with respect to the inclination angle of the projector in a predetermined installation form (desktop or ceiling installation).
- the adjustment of the inclination of the light receiving unit by the driving unit is controlled according to the inclination angle detected by the inclination angle detecting means.
- the light receiving unit has a window for taking light into its light receiving surface, and the light receiving angle range is limited by the window. That is, the light receiving unit has directivity.
- the light receiving unit cannot receive a control signal from outside the light reception possible angle range. For this reason, depending on the attitude of the projector and the positional relationship between the projector and the remote controller, the remote controller may be out of the receivable angle range of the light receiving unit, and the control signal from the remote controller may not be received by the light receiving unit.
- the tilt angle of the light receiving unit is automatically adjusted according to the tilt angle of the projector so that the light receiving unit can receive a control signal from the remote controller.
- the projector and the screen may be installed in a state where the center of the screen is off the optical axis of the projection lens, that is, the screen is not positioned in front of the projector.
- the projected image can be stored on the screen by shifting the projected image by moving the projection lens in parallel by the lens shift unit.
- the positional relationship between the screen and the projector does not change. Therefore, depending on the positional relationship, the screen may deviate from the receivable angle range of the light receiving unit. In this case, even if the operator performs an input operation with the remote controller facing the screen, the light receiving unit cannot receive the control signal (infrared ray) output from the remote controller via the screen. Therefore, remote operation by a remote controller cannot be performed.
- the inclination angle of the light receiving unit can be automatically adjusted according to the inclination angle of the projector.
- the positional relationship between the light receiving unit and the screen is not taken into account, so depending on how the projector and the screen are installed, the screen may be out of the light receiving angle range of the light receiving unit, and remote control by a remote controller Can not do.
- An object of the present invention is to provide a projector and a control method therefor that can solve the above-described problems and can reliably perform remote operation with the remote controller facing the screen even in a situation where the shift of the projected image is necessary. It is to provide.
- a projector capable of remote operation is provided.
- a projection lens for projecting an image A lens shift unit that translates the projection lens in a direction perpendicular to the optical axis; When the direction and the amount of parallel movement performed by the lens shift unit are input, an input unit that outputs an instruction signal indicating the input direction and the amount of parallel movement;
- a light receiving portion that receives a signal light for remote operation, and a light receiving portion that is disposed so that the light receiving surface faces a plane orthogonal to the optical axis of the projection lens;
- a movable portion that includes a support portion that rotatably supports the light receiving portion, and the orientation of the light receiving surface is adjusted by the rotation of the support portion;
- the lens shift unit causes the projection lens to translate in accordance with the direction and the amount of parallel movement indicated by the instruction signal, and the projection lens after the light receiving surface is translated.
- a control unit that rotates the support unit with the movable
- a projector capable of remote operation is provided.
- a projection lens for projecting an image A lens shift unit that translates the projection lens in a direction perpendicular to the optical axis;
- a light receiving portion that receives a signal light for remote operation, and a light receiving portion that is disposed so that the light receiving surface faces a plane orthogonal to the optical axis of the projection lens;
- a movable portion that includes a support portion that rotatably supports the light receiving portion, and that adjusts the orientation of the light receiving surface of the light receiving portion by rotation of the support portion;
- the detection signal is received from the detection unit, a direction in which an image is projected by the projection lens after the light-receiving surface is moved in parallel based on the movement direction and the movement amount of the projection lens indicated by the received detection signal And a control section that rotates the support section with the movable section.
- a projection lens for projecting an image and a light receiving surface for receiving signal light for remote control are provided, and the light receiving surface is disposed so as to face a plane orthogonal to the optical axis of the projection lens.
- a method for controlling a projector having the received light receiving unit Moving the projection lens in a direction perpendicular to the optical axis; And rotating a support portion that supports the light receiving portion so that the light receiving surface faces a direction in which an image is projected by the projection lens after the parallel movement.
- FIG. 1 is a block diagram showing a configuration of a projector according to the first embodiment of the present invention. It is a schematic diagram for demonstrating the moving direction of the projection lens by the lens shift mechanism of the projector shown in FIG. It is a schematic diagram for demonstrating the receivable angle range of a light-receiving part.
- FIG. 2 is a schematic diagram for explaining a rotation direction of a light receiving unit by a light receiving unit rotation mechanism when the light receiving unit is viewed from the x-axis direction in the projector illustrated in FIG. 1.
- FIG. 2 is a schematic diagram for explaining a rotation direction of a light receiving unit by a light receiving unit rotation mechanism when the light receiving unit is viewed from the z-axis direction in the projector illustrated in FIG. 1.
- FIG. 2 is a schematic diagram illustrating an image projection direction and a receivable angle range of the light receiving unit when the light receiving unit is rotated by shifting the lens upward by about 50% of the screen size in the projector illustrated in FIG. 1.
- FIG. 2 is a schematic diagram illustrating an image projection direction and a receivable angle range of the light receiving unit when the light receiving unit is rotated by shifting the lens upward by about 100% of the screen size in the projector illustrated in FIG. 1.
- FIG. 1 is a block diagram showing a configuration of a projector according to the first embodiment of the present invention.
- a projector 1 includes a light receiving unit 2, a projection lens 5, a control unit 8, a memory 9, a video processing circuit 10, a light modulation element driving circuit 11, a light source 12, a light modulation element 13, an input unit 14, and a lens.
- a shift unit 15 and a movable unit 16 are provided.
- the light from the light source 12 is irradiated to the light modulation element 13.
- a high-pressure mercury lamp, a solid light source represented by a light emitting diode (LED), or the like can be used.
- the light modulation element 13 spatially modulates the light from the light source 12, and is composed of a display element represented by, for example, a liquid crystal panel or DMD (Digital Micromirror Device).
- a display element represented by, for example, a liquid crystal panel or DMD (Digital Micromirror Device).
- the video processing circuit 10 is composed of a signal processing circuit including, for example, an A / D converter and a digital signal processor.
- the video processing circuit 10 performs processing for converting a video signal input from the outside into a digital signal, resolution conversion processing for matching the resolution of an image based on the input video signal with the resolution of the light modulation element 13, and the like.
- the light modulation element driving circuit 11 drives the light modulation element 13 based on the video signal processed by the video processing circuit 10.
- the projection lens 5 projects the modulated light (image light) generated by the light modulation element 13 onto an external screen or the like.
- the lens shift unit 15 translates the projection lens 5 in a direction orthogonal to the optical axis, and includes a lens shift mechanism 6 and a lens shift mechanism driving unit 7.
- FIG. 2 schematically shows the moving direction of the projection lens 5 by the lens shift mechanism 6.
- the optical axis A of the projection lens 5 coincides with the y-axis.
- the lens shift mechanism 6 includes a first shift mechanism that translates the projection lens 5 in a first direction A1 (z-axis direction) orthogonal to the optical axis A of the projection lens 5, and the optical axis A and the projection lens 5.
- a second shift mechanism that translates the projection lens 5 in a second direction A2 (x-axis direction) orthogonal to each of the first directions A1.
- the first shift mechanism includes, for example, a motor, a support member that supports the projection lens 5, and a connection unit that includes a gear that connects the output shaft of the motor and the support member.
- the support member is driven by the driving force of the motor. Can be reciprocated in a certain direction.
- the second shift mechanism has the same configuration as the first shift mechanism.
- the lens shift mechanism drive unit 7 drives the lens shift mechanism 6 (specifically, the motors of the first and second shift mechanisms) in accordance with a control signal from the control unit 8.
- the light receiving unit 2 receives signal light (for example, infrared rays) from an external remote controller, and its light receiving surface faces a plane orthogonal to the optical axis of the projection lens 5. Specifically, the light receiving unit 2 and the projection lens 5 are disposed on the same surface (front surface) of the housing of the projector 1.
- the light receiving unit 2 is made of, for example, a photodiode having directivity, and has a light receivable angle range.
- FIG. 3 is a diagram for explaining the light receiving possible angle range of the light receiving unit 2.
- the light receiving unit 2 has a light receiving angle ⁇ , and the light receiving angle range is limited by the light receiving angle ⁇ .
- the light receiving unit 2 cannot receive signal light from outside the receivable angle range.
- the movable unit 16 rotates the light receiving unit rotating mechanism 3 that rotatably supports the light receiving unit 2 and adjusts the direction of the light receiving surface of the light receiving unit 2 by driving the light receiving unit rotating mechanism 3 in accordance with a control signal from the control unit 8. And a mechanism drive unit 4.
- FIG. 4 schematically shows the rotation direction of the light receiving unit 2 by the light receiving unit rotation mechanism 3 when the light receiving unit 2 is viewed from the x-axis direction
- FIG. 5 illustrates the case where the light receiving unit 2 is viewed from the z-axis direction.
- the rotation direction of the light receiving unit 2 by the light receiving unit rotating mechanism 3 is schematically shown. 4 and 5, the central axis B of the light receiving unit 2 (perpendicular line passing through the center of gravity of the light receiving surface) coincides with the y axis.
- the light receiving unit rotating mechanism 3 includes a first rotating mechanism that rotates the light receiving unit 2 within an angle ⁇ 1 in the yz plane, and an angle in the xy plane as shown in FIG. and a second rotating mechanism that rotates the light receiving unit 2 in the range of ⁇ 2. With these first and second rotating mechanisms, the direction of the light receiving surface of the light receiving unit 2 can be changed.
- the angle ⁇ 1 is determined according to the movable range of the projection lens 5 in the first direction A1 (z axis) shown in FIG.
- the angle ⁇ 2 is determined according to the movable range of the projection lens 5 in the second direction A2 (x axis) shown in FIG.
- the angles ⁇ 1 and ⁇ 2 are the same angle. It is said.
- the first rotation mechanism includes, for example, a motor, a support member that supports the light receiving unit 2, and a connection unit that includes a gear that connects the output shaft of the motor and the support member, and the support member is driven by the driving force of the motor. Can be rotated.
- the second rotation mechanism has the same configuration as the first rotation mechanism.
- the input unit 14 has a plurality of operation buttons for operating the projector 1, and supplies an instruction signal to the control unit 8 according to an input operation using these operation buttons.
- the operation buttons include four direction keys (up direction key, down direction key, left direction key, right direction key) for instructing the moving direction and moving amount of the projection lens 5 by the lens shift unit 15. .
- the first direction A1 and the second direction A2 shown in FIG. 2 correspond to the vertical direction and the horizontal direction on the projection screen on the screen, respectively.
- An upward key is instructed to move upward, and a downward key is instructed to move downward.
- the left direction key is used to instruct a leftward movement, and the right direction key is used to instruct a rightward movement.
- the amount of movement in each of the up / down / left / right directions is indicated by the number of times the up / down / left / right direction keys are pressed, for example. For example, every time the upward key is pressed, a predetermined movement amount is instructed.
- a lens shift instruction signal indicating that the projection lens 5 is shifted upward by a predetermined amount is supplied from the input unit 14 to the control unit 8.
- n an integer of 2 or more
- the same instruction is performed for the other direction keys.
- the continuous pressing of the direction key means a case where the same direction key is pressed within a predetermined time after the direction key is pressed.
- the predetermined time can be set appropriately.
- the program and data necessary for operating the projector 1 are stored in the memory 9.
- the data stored in the memory 9 includes table data that stores the rotation direction and rotation angle of the light receiving unit 2 with respect to the movement direction and movement amount of the projection lens 5 (the inclination direction and the inclination angle of the light receiving surface). .
- the predetermined movement amount instructed when the up direction key and the down direction key are pressed may be the same as the predetermined movement amount instructed when the left direction key and the right direction key are pressed, It may be different.
- the table data is created for each of the vertical direction (vertical direction) and the horizontal direction (horizontal direction). Since there is a correlation between the movement amount of the projection lens 5 and the rotation angle (tilt angle) of the light receiving unit 2, the control unit 8 uses a calculation formula that gives the relationship to rotate the rotation angle with respect to a predetermined movement amount. (Inclination angle) may be calculated.
- the control unit 8 is composed of, for example, a microcomputer, and based on a control program and data stored in the memory 9, the rotation mechanism drive unit 3, the lens shift mechanism drive unit 7, the video processing circuit 10, The operation of the entire projector 1 including the light modulation element driving circuit 11 and the like is controlled.
- control unit 8 When the control unit 8 receives an instruction signal designating the movement direction and movement amount of the projection lens 5 from the input unit 14, the movement amount designated by the lens shift unit 15 in the designated movement direction. Just move. Further, the control unit 8 refers to the table data stored in the memory 9, and the rotation direction and rotation angle of the light receiving unit 2 corresponding to the movement direction and movement amount of the projection lens 5 (inclination direction and inclination of the light receiving surface). Angle) is acquired, and based on the acquired rotation direction and rotation angle, the rotation drive of the light receiving unit rotation mechanism 3 by the rotation mechanism drive unit 4 of the movable unit 16 is controlled.
- the projector 1 is characterized in that the light receiving unit 2 rotates in conjunction with the lens shift, and the other operations are the same as those of the existing projector, and thus the description thereof is omitted.
- FIG. 6 shows a procedure of the operation in which the light receiving unit 2 rotates in conjunction with the lens shift.
- the operator When the projected image is off the screen, the operator performs an input operation using the up / down / left / right direction keys of the input unit 14 to adjust the position of the projected image on the screen.
- a lens shift instruction signal for instructing the moving direction and the moving amount is supplied from the input unit 14 to the control unit 8 based on pressing of the direction key.
- the control unit 8 determines whether or not a lens shift instruction has been received from the input unit 14 (step S10).
- control unit 8 supplies the lens shift mechanism driving unit 7 with a control signal indicating that the projection lens 5 is moved by the designated movement amount in the designated movement direction.
- the lens shift mechanism drive unit 7 drives the lens shift mechanism 6 in accordance with a control signal from the control unit 8 (step S11).
- control unit 8 determines the corresponding rotation direction and rotation angle (inclination of the light receiving surface) from the table data stored in the memory 9 based on the movement direction and the movement amount instructed by the lens shift instruction signal. (Direction and inclination angle) are acquired (step S12).
- control unit 8 supplies a control signal indicating that the light receiving unit 2 is rotated at the acquired rotation angle in the acquired rotation direction to the rotation mechanism driving unit 4 of the movable unit 16.
- the rotation mechanism drive unit 4 drives the light receiving unit rotation mechanism 3 in accordance with a control signal from the control unit 8 (step S13).
- the image projection direction can be defined, for example, by a direction along a straight line connecting the center of the lens surface on the emission side of the projection lens 5 and the center (or center of gravity) of the projection image.
- the projection direction of this image changes according to the movement direction and movement amount of the projection lens 5.
- the screen Since the projected image is located on the screen by the input operation using the up / down / left / right direction keys of the input unit 14, the screen is always arranged in the image projection direction. Therefore, if the light receiving surface of the light receiving unit 2 is oriented in the image projection direction by the projection lens 5, the screen is positioned within the receivable angle range of the light receiving unit 2. In this case, the light receiving unit 2 can receive signal light (for example, infrared rays) from the external remote controller via the screen.
- signal light for example, infrared rays
- FIG. 7A schematically shows the image projection direction and the receivable angle range of the light receiving unit 2 when the lens is shifted upward by about 50% of the screen size and the light receiving unit 2 is rotated in conjunction therewith.
- FIG. 7B schematically shows the image projection direction and the receivable angle range of the light receiving unit 2 when the lens is shifted upward by about 100% of the screen size and the light receiving unit 2 is rotated in conjunction therewith.
- 7A and 7B are both examples in which the projector 1 is placed on a desk or the like.
- the light receiving surface of the light receiving unit 2 faces the image projection direction by the projection lens 5, and the screen 20 is positioned within the receivable angle range (angle ⁇ ) of the light receiving unit 2. To do. Therefore, the light receiving unit 2 can receive the signal light (for example, infrared rays) from the external remote controller via the screen 20.
- the signal light for example, infrared rays
- FIGS. 8A and 8B show an example in which only the lens shift is performed without rotating the light receiving unit 2.
- FIG. 8A schematically shows the image projection direction and the receivable angle range of the light receiving unit 2 when the lens is shifted upward by about 50% of the screen size.
- FIG. 8B schematically shows the image projection direction and the receivable angle range of the light receiving unit 2 when the lens is shifted upward by about 100% of the screen size.
- 8A and 8B are both examples when the projector 1 is placed on a desk or the like, and correspond to the arrangements of FIGS. 7A and 7B, respectively.
- a part of the screen 20 is out of the light receivable angle range of the light receiving unit 2.
- signal light for example, infrared rays
- the external remote controller when signal light (for example, infrared rays) from the external remote controller is irradiated on a region outside the receivable angle range of the light receiving unit 2 on the screen 20, the light receiving unit 2 passes through the screen 20. The signal light cannot be received.
- substantially the entire screen 20 is out of the light receiving angle range of the light receiving unit 2.
- the light receiving unit 2 cannot receive the signal light from the external remote controller via the screen 20.
- the movement direction and the movement amount of the projection lens 5 are instructed by an input operation using each direction key of the input unit 14, but the movement amount of the projection lens 5 is It may be given as a ratio (%) of the shift amount of the projected image.
- the ratio of the shift amount of the projected image is the ratio of the shift amount of the projected image in the horizontal direction on the screen 20 to the horizontal width of the screen 20 and the on-screen relative to the vertical width of the screen.
- the ratio of the shift amount of the projected image in the vertical direction is the ratio of the shift amount of the projected image in the vertical direction.
- table data indicating the relative relationship between the moving direction of the projection lens 5 and the ratio of the shift amount of the projected image and the rotation direction (tilt direction) and rotation angle (tilt angle) of the light receiving unit 2 is used.
- Fig. 9 shows an example of the table data.
- This table data relates to the vertical direction, and stores data indicating the relative relationship between the ratio of the shift amount of the projected image with respect to the width of the screen 20 in the vertical direction and the rotation angle of the light receiving unit 2.
- the rotation angle ⁇ x is 21.8. °.
- ⁇ x TAN ⁇ 1 (0.4) ⁇ 21.8 °.
- the light receiving surface of the light receiving unit 2 is inclined 21.8 ° upward, the light receiving surface can be directed to the center A of the screen at a position shifted 40% upward from the front of the projector 1.
- the ratio of the shift amount of the projected image is given to the control unit 8 through an input operation at the input 14.
- the amount of shift of the projection image is proportional to the amount of movement of the projection lens 5, and the control unit 8 shifts the projection image from the amount of movement of the projection lens 5 in the horizontal or vertical direction using an arithmetic expression that gives the relationship. Calculate the proportion of quantity.
- the control unit 8 calculates the ratio of the shift amount of the projection image from the movement amount. Then, the control unit 8 acquires the rotation direction and rotation angle of the light receiving unit 2 from the table data shown in FIG. 9 based on the calculated ratio of the shift amount of the projected image, and the light receiving unit 2 acquires the rotation thus acquired.
- the rotation mechanism drive unit 4 is instructed to incline the light receiving surface in the direction and the rotation angle.
- the rotation mechanism drive unit 4 supplies a rotation control current required to provide the inclination to the acquired rotation angle to the light receiving unit rotation mechanism 3 in accordance with the instruction. Also in the horizontal direction, the same rotation control as in the vertical direction is performed.
- FIG. 11 is a block diagram showing a configuration of a projector according to the second embodiment of the present invention.
- a lens shift mechanism 18 that manually translates the projection lens 5 and a movement that detects the movement direction and the movement amount of the projection lens 5 are used. It differs from the projector of the first embodiment described above in that the detection unit 17 is provided.
- the movement detection unit 17 detects the movement direction and movement amount of the projection lens 5 and supplies a detection signal indicating the detection result to the control unit 8. And the control part 8 performs rotation control of the light-receiving part 2 interlock
- the lens shift mechanism 18 includes a first shift mechanism that translates the projection lens 5 in a first direction A1 orthogonal to the optical axis A of the projection lens 5, and the optical axis A of the projection lens 5 and the first direction A1. And a second shift mechanism that translates the projection lens 5 in a second direction A2 orthogonal to each.
- the first shift mechanism includes a support member that supports the projection lens 5 and a mechanical rotation mechanism that translates the support member via a connecting unit including a gear or the like.
- the rotating mechanism has a disk-shaped rotating member, and when the operator rotates the rotating member, the support member moves in parallel with the rotating operation.
- the second shift mechanism also has the same configuration as the first shift mechanism.
- the movement detection unit 17 detects the movement direction and the movement amount of the projection lens 5 by the lens shift mechanism 18 and supplies the detection result to the control unit 8. Specifically, the movement detection unit 17 detects the movement direction and the movement amount of the support member for each of the first and second shift functions.
- control unit 8 When receiving the detection signal from the movement detection unit 17, the control unit 8 refers to the table data stored in the memory 9, and receives the light reception unit corresponding to the movement direction and movement amount of the projection lens 5 indicated by the detection signal. 2 is acquired, and the rotation drive of the light receiving unit rotation mechanism 3 by the rotation mechanism drive unit 4 of the movable unit 16 is controlled based on the acquired rotation direction and rotation angle. To do.
- the light receiving unit 2 rotates in conjunction with the movement of the projection lens 5, and the light receiving surface of the light receiving unit 2 faces the image projection direction by the projection lens 5. It will be located within the light reception possible angle range. Therefore, as in the first embodiment, the light receiving unit 2 can receive the signal light (for example, infrared rays) from the external remote controller via the screen.
- the signal light for example, infrared rays
- the rotational direction of the light receiving unit 2 corresponding to the moving direction and the moving amount of the projection lens 5 is calculated using an arithmetic expression instead of referring to the table data. And the rotation angle may be obtained.
- the lens shift mechanism 18 can be replaced with the lens shift mechanism 6 and the lens shift mechanism drive 7.
- the projection lens 5 moves in parallel according to the movement direction and movement amount specified by the input unit 14, and the movement detection unit 17 detects the movement direction and movement amount of the projection lens 5.
- the control unit 8 performs rotation control of the light receiving unit 2 in conjunction with the lens shift based on the detection signal from the movement detection unit 17.
- a color image can be provided by using three transmissive liquid crystal panels that modulate each color light separated into red, green, and blue, for example, as the light modulation element 13. it can.
- the light beam from the light source 12 is separated into light beams of red, green, and blue colors by a color separation optical system using, for example, a dichroic mirror.
- the separated light fluxes of the respective colors are irradiated to the respective transmissive liquid crystal panels.
- the light modulation element driving circuit 11 adjusts the light transmittance of each pixel of each transmissive liquid crystal panel.
- the modulated light of each color (image light of each color) generated by each transmissive liquid crystal panel enters the projection lens 5 via a composite optical system such as a cross dichroic prism.
- the projection lens 5 enlarges and projects the modulated light of each color (image light of each color) from each transmissive liquid crystal panel onto the screen.
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Abstract
Description
画像を投写する投写レンズと、
前記投写レンズをその光軸と直交する方向に平行移動するレンズシフト部と、
前記レンズシフト部によって行われる方向および平行移動量が入力されると、該入力された方向および平行移動量を示す指示信号を出力する入力部と、
前記遠隔操作のための信号光を受光する受光面を備え、該受光面が前記投写レンズの光軸と直交する平面と対向するように配置された受光部と、
前記受光部を回転可能に支持する支持部を備え、該支持部の回転によって前記受光面の向きが調整される可動部と、
前記入力部から前記指示信号を受け付けると、前記レンズシフト部にて、該指示信号にて示される方向および平行移動量に従って前記投写レンズを平行移動させるとともに、前記受光面が平行移動後の投写レンズによって画像が投写される方向に向くように、前記可動部にて前記支持部を回転させる制御部と、を有する。
画像を投写する投写レンズと、
前記投写レンズをその光軸と直交する方向に平行移動するレンズシフト部と、
前記遠隔操作のための信号光を受光する受光面を備え、該受光面が前記投写レンズの光軸と直交する平面と対向するように配置された受光部と、
前記受光部を回転可能に支持する支持部を備え、該支持部の回転によって前記受光部の受光面の向きを調整する可動部と、
前記投写レンズの移動方向および移動量を検出し、該検出結果を示す検出信号を出力する検出部と、
前記検出部から前記検出信号を受信すると、該受信した検出信号にて示される前記投写レンズの移動方向および移動量に基づいて、前記受光面が平行移動後の投写レンズによって画像が投写される方向に向くように、前記可動部にて前記支持部を回転させる制御部と、を有する。
前記投写レンズをその光軸と直交する方向に平行移動し、
前記受光面が平行移動後の投写レンズによって画像が投写される方向に向くように、前記受光部を支持する支持部を回転することを含む。
2 受光部
5 投写レンズ
8 制御部
9 メモリ
10 映像処理回路
11 光変調素子駆動回路
12 光源
13 光変調素子
14 入力部
15 レンズシフト部
16 可動部
図1は、本発明の第1の実施形態であるプロジェクターの構成を示すブロック図である。
図11は、本発明の第2の実施形態であるプロジェクターの構成を示すブロック図である。
Claims (8)
- 遠隔操作が可能なプロジェクターであって、
画像を投写する投写レンズと、
前記投写レンズをその光軸と直交する方向に平行移動するレンズシフト部と、
前記レンズシフト部によって行われる方向および平行移動量が入力されると、該入力された方向および平行移動量を示す指示信号を出力する入力部と、
前記遠隔操作のための信号光を受光する受光面を備え、該受光面が前記投写レンズの光軸と直交する平面と対向するように配置された受光部と、
前記受光部を回転可能に支持する支持部を備え、該支持部の回転によって前記受光面の向きが調整される可動部と、
前記入力部から前記指示信号を受け付けると、前記レンズシフト部にて、該指示信号にて示される方向および平行移動量に従って前記投写レンズを平行移動させるとともに、前記受光面が平行移動後の投写レンズによって画像が投写される方向に向くように、前記可動部にて前記支持部を回転させる制御部と、を有するプロジェクター。 - 前記制御部は、前記指示信号にて示される方向に基づいて前記受光面の傾斜方向を決定し、前記指示信号にて示される平行移動量から所定の演算式により前記受光面の傾斜角度を決定する、請求の範囲第1項に記載のプロジェクター。
- 前記投写レンズの移動方向および平行移動量と前記受光面の傾き方向および傾き角度との相対関係が格納されたメモリを有し、
前記制御部は、前記メモリを参照して、前記指示信号にて示された方向および移動量に対応する前記受光面の傾斜方向および傾斜角度を決定する、請求の範囲第1項に記載のプロジェクター。 - 遠隔操作が可能なプロジェクターであって、
画像を投写する投写レンズと、
前記投写レンズをその光軸と直交する方向に平行移動するレンズシフト部と、
前記遠隔操作のための信号光を受光する受光面を備え、該受光面が前記投写レンズの光軸と直交する平面と対向するように配置された受光部と、
前記受光部を回転可能に支持する支持部を備え、該支持部の回転によって前記受光部の受光面の向きを調整する可動部と、
前記投写レンズの移動方向および移動量を検出し、該検出結果を示す検出信号を出力する検出部と、
前記検出部から前記検出信号を受信すると、該受信した検出信号にて示される前記投写レンズの移動方向および移動量に基づいて、前記受光面が平行移動後の投写レンズによって画像が投写される方向に向くように、前記可動部にて前記支持部を回転させる制御部と、を有するプロジェクター。 - 前記制御部は、前記受信した検出信号にて示される移動方向に基づいて前記受光面の傾斜方向を決定し、前記受信した検出信号にて示される移動量から所定の演算式により前記受光面の傾斜角度を決定する、請求の範囲第4項に記載のプロジェクター。
- 前記投写レンズの移動方向および移動量と前記受光面の傾き方向および傾き角度との対応関係が格納されたメモリを有し、
前記制御部は、前記メモリを参照して、前記受信した検出信号にて示される移動方向および移動量に対応する前記受光面の傾斜方向および傾斜角度を決定する、請求の範囲第4項に記載のプロジェクター。 - 前記レンズシフト部によって行われる方向および平行移動量が入力されると、該入力された方向および平行移動量を示す指示信号を出力する入力部を、さらに有し、
前記制御部は、前記入力部から前記指示信号を受け付けると、前記レンズシフト部にて、該指示信号にて示される方向および平行移動量に従って前記投写レンズを平行移動させる、請求の範囲第4項から第6項のいずれかに記載のプロジェクター。 - 画像を投写する投写レンズと、遠隔操作のための信号光を受光する受光面を備え、該受光面が前記投写レンズの光軸と直交する平面と対向するように配置された受光部とを有するプロジェクターの制御方法であって、
前記投写レンズをその光軸と直交する方向に平行移動し、
前記受光面が平行移動後の投写レンズによって画像が投写される方向に向くように、前記受光部を支持する支持部を回転する、プロジェクターの制御方法。
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JP2004163453A (ja) * | 2002-11-08 | 2004-06-10 | Casio Comput Co Ltd | プロジェクタ |
JP2005117624A (ja) * | 2003-09-16 | 2005-04-28 | Seiko Epson Corp | プロジェクタ |
JP2006317559A (ja) * | 2005-05-10 | 2006-11-24 | Sharp Corp | 投射型画像表示装置及び画像表示方法 |
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JP2004163453A (ja) * | 2002-11-08 | 2004-06-10 | Casio Comput Co Ltd | プロジェクタ |
JP2005117624A (ja) * | 2003-09-16 | 2005-04-28 | Seiko Epson Corp | プロジェクタ |
JP2006317559A (ja) * | 2005-05-10 | 2006-11-24 | Sharp Corp | 投射型画像表示装置及び画像表示方法 |
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