WO2005057269A1 - ディスプレイ装置およびその走査方法 - Google Patents
ディスプレイ装置およびその走査方法 Download PDFInfo
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- WO2005057269A1 WO2005057269A1 PCT/JP2004/018362 JP2004018362W WO2005057269A1 WO 2005057269 A1 WO2005057269 A1 WO 2005057269A1 JP 2004018362 W JP2004018362 W JP 2004018362W WO 2005057269 A1 WO2005057269 A1 WO 2005057269A1
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- WIPO (PCT)
- Prior art keywords
- coherent light
- polygon mirror
- display device
- screen
- scanning
- Prior art date
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Classifications
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- 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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
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- 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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/125—Details of the optical system between the polygonal mirror and the image plane
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- 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
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/12—Scanning systems using multifaceted mirrors
- G02B26/123—Multibeam scanners, e.g. using multiple light sources or beam splitters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/02—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only
- H04N3/08—Scanning details of television systems; Combination thereof with generation of supply voltages by optical-mechanical means only having a moving reflector
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- 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]
- H04N9/3129—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] scanning a light beam on the display screen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S359/00—Optical: systems and elements
- Y10S359/90—Methods
Definitions
- the present invention relates to a display device that projects or transmits coherent light onto a screen to project an image, and a scanning method thereof.
- a display apparatus using a spatial modulation element is known as in the display apparatus described in Patent Document 1.
- a display apparatus using a spatial modulation element is known as in the display apparatus described in Patent Document 1.
- FIG. 7 (a) there is one that projects coherent light onto a screen using a polygon mirror.
- a conventional laser display device shown in FIG. 7 (a) will be described.
- FIG. 7A shows a schematic configuration of a conventional laser display device.
- the laser display device 100 includes a laser light source 101a-101c corresponding to RGB three colors and a laser beam La-Lc output from the laser light source 101a-101c according to the primary color signal Sa-Sc of the input video signal. And optical modulators 106a to 106c for intensity modulation. Further, the laser display 100 includes a dichroic mirror 102a for multiplexing the laser light Lb modulated by the light modulator 106b and the laser light Lc modulated by the light modulator 106c, and a light modulator 106a. It has a dichroic mirror 102b that combines the modulated laser light La and the laser light from the dichroic mirror 102a.
- this laser display 100 forms a two-dimensional image on the screen 108 of the polygon mirror 104 for scanning the laser beams combined by the dichroic mirror 102 b in the X direction and the light from the polygon mirror 104. It has a galvano mirror 105 which scans in the y direction so as to be separated, and a projection lens 107 which projects laser light reflected by the galvano mirror onto a screen 108.
- the laser light La-Lc from the laser light sources 101a-101c corresponding to the three RGB colors is intensity-modulated by the light modulators 106a-106c in accordance with the respective primary color signals Sa-Sc of the input video signal, and the crosstalk is detected.
- the light is multiplexed by an optical system including mirrors 102a and 102b.
- the laser beams combined by the laser 102 b are scanned in the X direction by the polygon mirror 104 and in the y direction by the galvanic mirror 105.
- the laser light scanned in these two-dimensional directions is projected onto the screen 108 by the projection lens 107, whereby a two-dimensional image is displayed on the screen 108.
- the NTSC signal can be obtained by using a laser light source of an appropriate wavelength.
- the color range that can be displayed is further expanded, and it is possible to display bright images with high color purity.
- FIG. 7 (b) is a diagram showing equipment connectable to the above-mentioned conventional laser display device.
- the laser display device 100 shown in FIG. 7 (b) receives video signals through the RGB terminals, and includes an integrated type with a personal computer 201 such as a notebook PC, a video game machine 202, an optical disc player 203 such as a DVD, and a VTR.
- Optical disk recorder 204 camera integrated VTR 205, stationary VTR 206, BSZCS tuner 207, TV 208, hard disk recorder 209 including an integrated type with various optical disk drives, STB (Set Top Box) 210 for Internet broadcasting, STB 211 for CATV, terrestrial waves Connection is possible if it has an output terminal for RGB signals, such as STB 212 for digital broadcasting and STB 213 for BS HDTV broadcasting.
- STB Set Top Box
- a D4 input terminal, a DVI-D input terminal, an IEEE 1394 terminal, a component terminal, an S terminal, a video terminal and the like may be provided according to the format of a signal output from a device connected to a laser display.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-98476 (page 4, FIG. 1)
- the present invention has been made to solve the problems as described above, and in a display apparatus of a system in which coherent light is scanned using a polygon mirror and projected onto a screen, rotation of the polygon mirror is performed. It is an object of the present invention to provide a display device capable of displaying an image with high resolution such as HDTV and a scanning method thereof without increasing the number and increasing the number of faces of the polygon mirror. .
- a display apparatus has a coherent light scanning system for scanning coherent light, and the coherent light scanning system is used to screen coherent light
- the coherent light scanning system is a polygon mirror that reflects the coherent light so that scanning on the screen is performed by its rotation, and an optical path to the screen of the coherent light is (1)
- a light path forming portion is formed such that a plurality of scans are performed on the screen by coherent light reflected by the reflection surface.
- the number of lines that can be scanned in the same time is increased compared to the case where the polygon mirror is used alone, and the rotation number of the polygon mirror can be reduced accordingly.
- a display device is a display according to claim 1.
- the optical path forming unit switches the scanning direction by the coherent light, which is determined by the rotation direction of the polygon mirror.
- each of the coherent light beams in which the scanning direction has changed can be projected as a plurality of scanning lines on the screen, so the number of lines that can be scanned in the same time increases, and the number of rotations of the polygon mirror Reduction is possible.
- the optical path forming portion is provided on a reflection optical path of the polygon mirror, from the polygon mirror Reflecting mirror power that reflects the coherent light of
- the number of lines that can be scanned in the same time can be increased and the number of rotations of the polygon mirror can be reduced by a simple configuration in which the coherent light reflected by the polygon mirror is further reflected by the reflection mirror. .
- the reflection mirror has a rotation angle of the polygon mirror within a predetermined range. It is characterized in that the coherent light from the polygon mirror is disposed at a reflecting position.
- the scanning direction of the coherent light reflected by the polygon mirror can be changed by the reflecting mirror, and each of the coherent light whose scanning direction is changed can be projected on the screen, so the number of lines that can be scanned in the same time increases. Therefore, the number of rotations of the polygon mirror can be reduced accordingly.
- a display device is the display device according to the fourth aspect, wherein a plurality of the reflection mirrors are arranged.
- the scanning direction of the coherent light reflected by the polygon mirror can be changed more, and the number of lines that can be scanned in the same time can be further increased.
- the plurality of reflection mirrors are arranged such that the reflection surfaces thereof face each other. 2 And the two reflection mirrors are the coherent light reflected by each of the two reflection mirrors, and the coffee which has passed between the two reflection mirrors. It is characterized in that the rent light is arranged to scan the same area on the screen.
- the reflection mirror multiple-reflects the coherent light.
- the two reflection mirrors are centered on an axis orthogonal to the scanning direction of the coherent light. It is characterized in that it is rotatably disposed.
- the optical path forming unit is configured to transmit coherent light of a single beam incident on one reflection surface of the polygon mirror. And generates a plurality of beams and emits them toward the polygon mirror.
- a display apparatus is the display apparatus according to claim 9, characterized in that the high-speed deflector is also an EO (Electro Optical) deflection device force. .
- EO Electro Optical
- the high speed deflector is arranged along a direction substantially orthogonal to a scanning direction by the polygon mirror. And deflecting the coherent light.
- the scanning line can be multiplied along with the scanning of the coherent light by the polygon mirror, and the number of rotations of the polygon mirror can be reduced accordingly.
- the optical path forming portion is provided on a reflection optical path of the polygon mirror, and a free curved surface shape is provided. It has the free-form surface mirror provided with at least one reflective surface which makes these.
- the scanning line can be increased by reflecting the coherent light by the free-form surface mirror, and the number of rotations of the polygon mirror can be reduced accordingly.
- a display device is the display device according to claim 12, characterized in that the free-form surface mirror has two or more reflecting surfaces.
- the scanning line is multiplied by the number of reflecting surfaces, and the number of rotations of the polygon mirror can be reduced accordingly.
- the reflecting surface is a free curved first and third reflecting surface
- the first to third reflection surfaces are formed on the first to third reflection surfaces.
- Each of the incident coherent light beams is shaped to scan the same area on the screen.
- the scanning line can be multiplied only by determining the arrangement position of the free curved surface mirror and the free curved surface shape of the reflecting surface, and the number of rotations of the polygon mirror can be reduced accordingly. Become.
- a display apparatus has a coherent light scanning system for scanning coherent light, and a display apparatus for projecting coherent light onto a screen using the coherent light scanning system.
- the coherent light scanning system includes a polygon mirror for scanning the coherent light in the rotational direction, and an optical path forming unit for multiplying the number of scannings of the coherent light
- the optical path forming unit includes a single beam A high-speed deflector for deflecting the coherent light to generate a plurality of beams and emitting them toward the polygon mirror, and provided on a reflection light path of the polygon mirror to reflect a plurality of coherent lights of the polygon mirror force And a reflecting mirror.
- the scanning line can be further multiplied, and the rotation number of the polygon mirror can be reduced accordingly.
- a display device is a display device having a coherent light scanning system for scanning coherent light, and projecting the coherent light onto the screen using the coherent light scanning system.
- the scanning system has a polygon mirror that scans coherent light in its rotational direction, and an optical path forming unit that multiplies the number of scanning of the coherent light, and the optical path forming unit is a single beam.
- the scanning line can be further multiplied, and the number of rotations of the polygon mirror can be reduced accordingly.
- a coherent light scanning method is a coherent light scanning method in which scanning with coherent light is performed on a screen, and a polygon mirror for reflecting coherent light is the polygon.
- the coherent light reflected by the mirror is rotated so that scanning is performed on the screen, and the optical path to the screen of the coherent light is plural on the screen by the coherent light reflected by one reflection surface of the polygon mirror It is characterized in that it is formed to be scanned.
- a coherent light scanning method is a coherent light scanning method in which scanning with coherent light is performed on a screen, and a polygon mirror for reflecting coherent light is the polygon. At least one mirror disposed on the reflected light path from the polygon mirror to the screen and rotated by the coherent light reflected by the mirror so as to scan on the screen is reflected by one reflection surface of the polygon mirror. The coherent light is reflected by the coherent light so that a plurality of scans are performed on the screen.
- the number of lines that can be scanned in the same time can be increased, and the number of rotations of the polygon mirror can be reduced.
- a coherent light scanning method is a coherent light scanning method in which scanning with coherent light is performed on a screen, and a single coherent light is scanned by the polygon mirror.
- a plurality of beams are generated by deflecting in a direction substantially orthogonal to the direction, and a polygon mirror that reflects the plurality of coherent lights is rotated, and a plurality of coherent lights reflected by the polygon mirror are used to generate a plurality of beams on the screen. It is characterized in that
- a coherent light scanning method is a coherent light scanning method in which scanning with coherent light is performed on a screen, and a polygon mirror for reflecting coherent light is a polygon.
- a free-form surface mirror having a free-form surface shape which is rotated so that scanning is performed on the screen by coherent light reflected by the mirror and is disposed on the reflection light path from the polygon mirror to the screen, The coherent light reflected by the surface is reflected such that a plurality of scans are performed on the screen by the coherent light.
- high-definition image display can be performed with the number of rotations of the polygon mirror reduced, and noise during rotation of the polygon mirror and power consumption and noise required for the rotation can be reduced. It becomes.
- the number of rotations of the polygon mirror is fixed to a predetermined number of rotations, it is not necessary to increase the number of surfaces of the polygon mirror to increase the number of scanning lines, and the polygon mirror becomes larger. Can be prevented.
- FIG. 1 is a view for explaining a display device according to a first embodiment of the present invention.
- FIG. 2 (a) is an operation explanatory diagram of the first embodiment, showing a case where laser light is reflected by the mirror 6a.
- FIG. 2 (b) is a diagram for explaining the operation of the embodiment 1, and shows the case where the laser light is not reflected by V of the mirrors 6a and 6b, even if it deviates.
- FIG. 2 (c) is a diagram for explaining the operation of the first embodiment, showing the case where the laser beam is reflected by the mirror 6b.
- FIG. 3 (a) is a diagram for explaining scan lines on the screen according to the first embodiment.
- FIG. 3 (b) is a diagram for explaining vertical scanning correction using a high-speed deflector according to Embodiment 1.
- FIG. 3 (c) is a diagram for explaining horizontal scanning correction using a high-speed deflector according to Embodiment 1.
- FIG. 4 (a) is a figure explaining the display apparatus by Embodiment 2 of this invention.
- FIG. 4 (b) is a diagram showing an operation of increasing the number of scanning lines using the high-speed deflector according to Embodiment 2.
- FIG. 4 (c) is a diagram showing an operation of performing correction of a line in which power is increased using a high speed deflector according to Embodiment 2.
- FIG. 5 (a) is a view for explaining a display device according to Embodiment 3 of the present invention.
- FIG. 5 (b) is a view for explaining the principle of determining the shape of the free-form surface mirror in the third embodiment.
- FIG. 6 is a view for explaining a display device according to a fourth embodiment of the present invention.
- FIG. 7 (a) is a schematic view of a conventional display device.
- FIG. 7 (b) shows an example of equipment connectable to a conventional display device. Explanation of sign
- a plurality of lines can be scanned on the screen while the laser light is reflected by one surface of the polygon mirror by further causing the reflected light from the polygon mirror to enter two mirrors.
- FIG. 1 is a schematic configuration view for explaining a laser display device according to Embodiment 1 of the present invention.
- the laser display device 30 shown in FIG. 1 is a laser light source 13 corresponding to each of three primary color signals R GB of red, green and blue, and a laser light L 1 output from the laser light source 13.
- a light modulator 13-15 for modulating the intensity of L 3 according to an image signal, and a laser beam L 2 modulated by the light modulator 14 and a laser beam L 3 modulated by the light modulator 15 are combined.
- Dichroic mirror 1 Oa Dichroic mirror 1 Oa, a dichroic mirror 10 b for combining the laser light L 1 modulated by the light modulator 13 and the laser light from the dichroic mirror 10 a, and a laser light from the dichroic mirror 10 b It has high-speed deflectors l la and l ib for deflecting L 4 in the vertical direction and in the horizontal direction.
- the laser display device 30 includes a coherent light scanning system 30 a including the polygon mirror 5, the incident mirrors 6 a and 6 b, the galvanometer 7, and the projection lens 8, and the laser light L 4 projected by the projection lens 8.
- a coherent light scanning system 30 a including the polygon mirror 5, the incident mirrors 6 a and 6 b, the galvanometer 7, and the projection lens 8, and the laser light L 4 projected by the projection lens 8.
- the polygon mirror 5 scans the laser light L4 combined by the dichroic mirror 10b in the X direction.
- the mirrors 6a and 6b receive the laser light L4 reflected by the polygon mirror 5 and guide them to the galvano mirror 7.
- the mirrors 6a and 6b form the optical path forming portion 30b in the coherent light scanning system 30a. There is. The details of the optical path forming unit 30b will be described later.
- the galvano mirror 7 scans the laser beam L4 in the y direction.
- the projection lens 8 condenses the laser beam L 4 reflected by
- the laser display 30 includes a controller 20, a laser driver 21, a deflector driver 22, a tilt driver 25, a mirror tilt 26, a motor driver 23, and a motor 24. And.
- the motor 24 rotates the polygon mirror 5.
- the first mirror tilt device 26 rotates the galvano mirror 7.
- the laser driver 21, the deflector driver 22, the tilt driver 25, and the motor driver 23 drive the laser light sources 1, 2, 3, the high speed deflectors 11 a, 1 ib, the tilt device 26, and the motor 24, respectively.
- the controller 20 controls the operation of the laser display 30 via the above-mentioned drivers.
- the laser driver 21 receives an externally input RGB signal and applies a drive current to the laser light sources 1, 2 and 3.
- the laser light sources 1, 2 and 3 have red, green and blue colors.
- the laser beams LI, L2 and L3 are intensity-modulated by the optical modulators 13, 14 and 15, and then multiplexed using the dichroic mirrors 10a and 10b to become a laser beam L4.
- the laser beam L4 is irradiated to the polygon mirror 5 after being deflected in the vertical direction and the horizontal direction by the high speed deflectors 11a and 11b.
- the laser beam L 4 reflected by one surface of the polygon mirror 5 first enters the galvanometer 7 through the mirror 6 a. Then, when the polygon mirror 5 is rotated, the laser beam L4 is directly incident on the galvano mirror 7 without passing through the incident mirrors 6a and 6b. When the polygon mirror 5 further rotates, the laser beam L4 enters the galvano mirror 7 through the mirror 6b.
- the controller 20 controls the tilt angle of the mirror tilter 26 through the tilt driver 25, whereby the galvano mirror 7 receives the laser light L 4 reflected by one surface of the polygon mirror 5. Meanwhile, the laser beam L4 is guided to the projection lens 8 while changing the tilt angle. The laser beam L4 incident on the projection lens 8 is projected to the screen 9, whereby three scans are performed on the screen 9 while the laser beam L4 is reflected on one surface of the polygon mirror 5.
- FIGS. 2 (a) to 2 (c) are diagrams showing the polygon mirror 5 and the laser beam L4 reflected by the incident mirrors 6a and 6b.
- FIGS. 3 (a) and 3 (b) are diagrams showing scanning lines on the screen 9 obtained by reflecting the laser beam L4 on one surface of the polygon mirror 5.
- the laser beam L4 reflected by the polygon mirror 5 first follows the rotation of the polygon mirror 5, and the end force on the polygon mirror 5 side is also the end on the galvano mirror 7 side. Scan head-to-head. While the laser beam L4 scans over the mirror 6a, that is, when the reflection angle of the laser beam L4 reflected by the polygon mirror 5 is in the range of the angle ⁇ 1 surrounded by the dotted line in FIG. 2A, The scanning direction of the laser beam L4 scanning on the galvano mirror 7 is opposite to the rotating direction of the polygon mirror 5, and on the screen 9, scanning from the left to the right slightly as shown by 11 in FIG. Will be done.
- the laser beam L4 is a mirror It is scanned between the ends on the galvano mirror 7 side of 6 a and 6 b, is directly led to the galvano mirror 7, and is projected onto the screen 9 through the projection lens 8. During this time, the scanning direction of the laser light L4 scanning on the galvano mirror 7 is the same as the rotating direction of the polygon mirror 5, and on the screen 9, the right force shown at 12 in FIG. A scan will be performed.
- the laser beam L4 scans the mirror 6b on the end of the galvano mirror 7 toward the end on the polygon mirror 5 side. While the laser beam L4 scans on the mirror 6b, that is, when the reflection angle of the laser beam L4 reflected by the polygon mirror 5 is in the range of the angle ⁇ 3 surrounded by a dotted line in FIG. 2C.
- the scanning direction of the laser beam L4 scanning on the galvano mirror 7 is opposite to the rotating direction of the polygon mirror 5, and on the screen 9, the left force shown in 13 of FIG. I am afraid that a scan of
- the mirrors 6a and 6b are disposed at a predetermined angle which satisfies the above relationship.
- each scanning line length on the screen 9 is one scanning line on the screen 9 It needs to be corrected to be longer. Therefore, in the first embodiment, the optical path length from the polygon mirror 5 to the screen 9 is determined so that each scanning line 11 to 13 has the original 1 line length on the screen 9, and the coherent optical scanning system 30a is obtained.
- Each component included is disposed so as to satisfy the above-mentioned optical path length, and further, an f 0 correction optical system (not shown) such as a ⁇ ⁇ ⁇ ⁇ lens is disposed downstream of the mirrors 6a and 6b.
- the three scanning lines on the screen 9 have the same scanning ranges as shown by 11 'and 13' in FIG. 3 (b), and one line is scanned by the polygon mirror alone. It has the same scanning range as.
- the scanning lines 11 and 13 'on the screen 9 obtained in this manner are slightly inclined from the horizontal direction as shown in FIG. 3 (b). Therefore, in the first embodiment, position correction of the laser beam L4 in the vertical direction is performed using the high-speed deflector 11a, and horizontal scanning as shown by a broken line in FIG. 3B is possible. In addition, horizontal position correction of the laser beam L4 is also required. That is, when the horizontal position correction of the laser beam L4 is not performed, since density unevenness in the horizontal direction occurs on the screen 9 as shown in FIG. 3C, the laser using the high-speed deflector l ib is used. Position correction of the light L4 in the horizontal direction is performed to make the density in the horizontal direction uniform.
- the EO (Electro Optical) deflection device is used as the high-speed deflectors 11a and 11b, and the controller 20 controls the deflection angles of the high-speed deflectors 11a and 1 lb via the deflector driver 22.
- a lens for correction can be used instead of the high-speed deflectors 11a and 11b.
- the scanning on the screen 9 reciprocates on the screen to the left and right, and the left force on the screen is also sequentially to the right. It's not like so-called progressive scan to scan.
- a line memory (not shown) consisting of an analog memory such as a CCD is provided, and RGB signals are once input to the line memory, and the controller 20 Control to switch the readout order of RGB signals from.
- the RGB signals are input to the line memory before being input to the laser light sources 1, 2 and 3, and the situation of FIG. 2 (a) and FIG. 2 (c), ie, scanning on the galvanometer mirror 7.
- laser In the situation where the scanning direction of the light L4 is opposite to the rotation direction of the polygon mirror 5, as shown in FIGS. 2 (a) and 2 (c), the RGB signal is written in the line memory. Read data in order. In the situation shown in FIG.
- the line memory may be provided with an AD converter and a DA converter at the front stage and the rear stage of the digital memory.
- the controller 20 controls the laser light source while scanning each scanning line 11 13 of FIG. 3 (a). Control is performed to output the original 1 line worth of video data for 1, 2 and 3. That is, while each scanning line 11 1 to 13 is scanned, the controller 20 controls the laser light sources 1, 2 and 3 to compress and output one line of information on the screen 9. This makes it possible to perform the same image display as in the case of scanning with the polygon mirror 5 alone.
- the pair of mirrors 6a and 6b are arranged on the reflected light path of the polygon mirror 5, and the arrangement angle thereof and the distance from the polygon mirror 5 to the screen 9 are optimum. It is possible to perform three scans on the screen 9 while the laser light L4 is reflected by the reflective surface 1 of the polygon mirror 5, thereby suppressing the number of rotations of the polygon mirror 5. It is possible to reduce noise and power consumption when the polygon mirror rotates. Moreover, when the rotation speed of the polygon mirror 5 is fixed at a predetermined rotation speed, it is not necessary to increase the number of surfaces of the polygon mirror 5 in order to scan the screen 9 more. Can be prevented.
- the number of rotations of the polygon mirror 5 should be reduced to half in this case. Is possible.
- the laser light L4 is multi-reflected as compared with the first embodiment by using longer mirrors or more mirrors, the number of rotations of the polygon mirror 5 can be further reduced.
- the mirrors 6a and 6b can be arranged so as to be rotatable about an axis parallel to the vertical direction of the screen 9, A mirror tilter for driving 6b and a tilter driver may be provided, and the tilt angles of the mirrors 6a and 6b may be changed appropriately under the control of the controller 20.
- the density distribution of the image ie, the scanning line interval
- the EO modulator may be driven by a correction circuit to adjust the line spacing.
- the screen 9 is irradiated with the laser light L 4 and the reflected light is monitored (front projection type) display device or the laser light L 4 is a screen
- the same effect as that of the first embodiment can be obtained even when applied to the shift of the display device of the transmission type (rear projection).
- the shapes of the mirrors 6a and 6b are flat, and the shapes of the force mirrors 6a and 6b can be optimized according to the type of the display device, and are other than flat. It is good.
- the present invention is applied to the power laser beam printer shown for the case where the coherent light scanning system 30a is applied to a display device to enable high speed, high quality printing of the printing.
- the present invention can also be applied to copiers and facsimile machines that print using a laser beam printer.
- the power D4 input terminal, the DVI-D input terminal, the IEEE 1394 terminal, the component terminal, the S terminal, the video terminal, etc. are assumed to input RGB signals. It may be made to correspond to signal formats other than RGB signals.
- a plurality of lines can be scanned simultaneously on the screen by deflecting incident light to the polygon mirror using a high-speed deflector and injecting a plurality of coherent lights in advance on one surface of the polygon mirror. It is something like that.
- FIG. 4 (a) is a schematic configuration diagram for explaining a laser display device 31 according to a second embodiment of the present invention.
- the laser display 31 of the second embodiment and the laser display device 30 of the above-described first embodiment are different in the configuration of the optical path forming unit 30c, and the other configurations are the same. Therefore, in FIG. 4A, the same components as those of the laser display device 30 according to the first embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted.
- the optical path forming unit 30c of the second embodiment includes the high-speed deflector l lc and the high-speed deflector 11 l id force.
- the high-speed deflector 11c is for rapidly deflecting the laser beam L4 in the horizontal direction, that is, in a direction parallel to the scanning direction of the polygon mirror.
- the high-speed deflector l id is for rapidly deflecting the laser light L4 in the vertical direction, ie, in the direction orthogonal to the scanning direction by the polygon mirror.
- an EO (Electro Optical) deflection device is used as the high-speed deflector 11c, l id.
- the EO deflection device deflects the laser light L4 by applying an electric field to the laser light L4 by applying a voltage.
- EO deflection devices respond very quickly, making them suitable for devices that require ultra-fast scanning, such as display devices.
- the laser driver 21 receives the externally input RGB signal and applies a drive current to the laser light sources 1, 2 and 3.
- the laser light sources 1, 2 and 3 are red, green and blue. It outputs three color laser beams LI, L2 and L3.
- the laser beams LI, L2 and L3 are intensity-modulated by the optical modulators 13, 14 and 15, and then multiplexed using the dichroic mirrors 10a and 10b to form the laser beam L4.
- Laser light L 4 is deflected in the horizontal direction by high-speed deflector 11 c, and further, substantially multiplied by three laser lights by high-speed deflector l id and irradiated to polygon mirror 5.
- Ru The three laser beams L4 reflected by the polygon mirror 5 are guided to the galvano mirror 7, reflected by the galvano mirror 7 and guided to the projection lens 8.
- the three laser beams L4 incident to the projection lens 8 are projected to the screen 9, and three scan lines are simultaneously projected on the screen 9.
- Fig. 4 (b) shows the scanning line on the screen 9 when the laser light L4 is not deflected by the high speed deflector 11c
- Fig. 4 (c) shows the laser light L4 by the high speed deflector 11c. Deflection of Are respectively representing the scan lines on the screen 9.
- the laser beam L4 is deflected at high speed by the high-speed deflector l id in the vertical direction, ie, the direction orthogonal to the scanning direction of the polygon mirror. For this reason, substantially three laser beams are incident on one surface of the polygon mirror 5, and on the screen 9, a scan that jumps in three steps in the vertical direction as shown in FIG. 4 (b) To be done.
- the pixels on the screen 9 are arranged obliquely as shown in FIG. 4 (b) by the rotation of the polygon mirror 5.
- the position correction in the horizontal direction is performed using the high-speed deflector 11c, and as shown in FIG. 4C, the correction is performed such that the respective pixels are aligned in the vertical direction.
- the high-speed deflector 11c it is possible to even out the density unevenness generated in the horizontal direction.
- the controller 20a controls the high-speed deflectors 11c and l id so as to enable these deflections via the deflector driver 22a.
- the control similar to that of the controller 20 in the first embodiment is performed with respect to other control objects such as motor rotation number control.
- the nonuniformization of the scanning line spacing generated between the upper and lower ends of the screen 9 and the vicinity of the center can be adjusted by using an f ⁇ lens or an EO modulator. it can
- the laser beam L4 incident on the polygon mirror 5 is deflected in the direction corresponding to the vertical direction of the screen using the high speed deflector 1 Id.
- a plurality of laser beams are substantially incident on the mirror 5, and while the laser beams are reflected on one surface of the polygon mirror 5, a plurality of scans can be simultaneously performed on the screen 9.
- the number of rotations of the polygon mirror 5 can be reduced, and noise and power consumption can be reduced when the polygon mirror is rotated.
- the second embodiment in order to obtain a plurality of scanning lines on the screen 9, it is possible to reduce the number of parts and the number of parts for which it is not necessary to use a scanning line growth mirror, a line memory or the like. If it is possible to reduce the number of rotations of the polygon mirror 5 while reducing the number of adjustment points, the following effects are obtained.
- polygon mirror 5 When the number of rotations of polygon mirror 5 is fixed to a predetermined number of rotations, it is not necessary to increase the number of surfaces of polygon mirror 5 in order to scan the screen 9 more frequently. Therefore, the polygon mirror 5 can be prevented from being enlarged.
- the polygon mirror 5 is deflected by deflecting the direction of the laser beam L4 incident on the polygon mirror 5 into three directions, so as to deflect the laser beam L4 in more directions.
- the number of revolutions of can be further reduced.
- the laser display device 31 of the above-mentioned second embodiment can be applied to either a front projection type display device or a rear projection type display device as in the second embodiment. You can get
- the coherent light scanning system 31a of the above-mentioned second embodiment to a laser beam printer to enable high-speed and high-quality printing, and the like.
- the present invention can be applied to a copying machine or a facsimile machine that performs printing using a laser beam printer.
- the number of scanning lines is further increased to reduce the rotation number of the polygon mirror. Let me do it.
- a plurality of lines can be scanned on a screen by causing a laser beam reflected by a polygon mirror to be incident on a free-form surface mirror.
- FIG. 5 (a) is a schematic configuration diagram for explaining a laser display device 32 according to Embodiment 3 of the present invention.
- the laser display 32 of the third embodiment and the laser display device 30 of the first embodiment described above are different in the configuration of the optical path forming unit 30d, and the other configurations are the same. Therefore, in FIG. 5A, the same components as those of the laser display device 30 according to the first embodiment are denoted by the same reference numerals, and the detailed description thereof is omitted.
- the optical path forming unit 30 d of the third embodiment is configured of the free curved surface mirror 12.
- the free curved mirror 12 can scan laser light in any direction without causing any aberration. It is considered to be
- the free curved surface mirror 12 has first, second and third reflecting surfaces FCS1, FCS2 and FCS3 as shown in FIG. 5 (a), and the reflecting surfaces FCS1 and FCS3 are free curved surfaces.
- a shape is formed, and the reflection surface FCS2 sandwiched between the reflection surfaces FCS1 and FCS3 has a flat shape.
- the shapes of the reflecting surfaces FCS1, FCS2, FCS3 are designed to scan equal ranges on the laser light L4 force screen 9 reflected by the respective reflecting surfaces.
- the coherent light scanning system 32a one scanning line on the scanning line force screen 9 obtained by reflecting the laser light L4 on each of the reflecting surfaces FCS1, FC S2, and FCS3. It is arranged to be the length of
- the free-form surface shape of the free-form surface mirror 12 can be determined as follows.
- Fig. 5 (b) is a conceptual view of the scanning optical system.
- 5 represents a polygon mirror
- 8 represents a projection lens
- 9 represents a screen
- 12 represents a free-form surface mirror.
- the projection lens 8 projects the image on the virtual image plane VP on the screen 9 on a one-to-one basis.
- the shape of the free-form surface mirror 12 can be obtained by sequentially calculating the inclination of the surface at each point on the mirror surface.
- the horizontal inclination at the point A on the mirror 12 in FIG. 5 (b) is the beam from the polygon mirror 5 to the point A on the free-form surface and the beam to the target point A on the virtual image plane VP. It can be obtained from the angle of
- a method of correcting this for example, there is a method of projecting a light beam from a polygon mirror onto a screen through a so-called f ⁇ ⁇ ⁇ ⁇ lens.
- Force f ⁇ lens requires a special design such as using an aspheric lens.
- the position of the target point on the virtual image plane VP is set linearly with respect to the scanning angle ⁇ .
- the linear spot position scan can be performed for the scan angle ⁇ ⁇ ⁇ by the polygon mirror 5, and as a result, the horizontal direction as shown in FIG. It becomes possible to remove concentration spots.
- the controller 20b controls the mirror tilter 26a for the galvano mirror 7 via the tilter driver 25a as in the first embodiment, and the galvano mirror 7 has a free-form surface. While the reflected light reflected by each reflection surface of the mirror 12 is incident, the laser light L4 is guided to the projection lens 8 while changing the inclination angle.
- the laser driver 21 receives the externally input RGB signal and applies a drive current to the laser light sources 1, 2, 3; the laser light sources 1, 2, 3 are red, It outputs laser light LI, L2, L3 of three colors, green and blue.
- the laser beams LI, L2 and L3 are intensity-modulated by the optical modulators 13, 14 and 15, and then multiplexed using the dichroic mirrors 10a and 10b to form the laser beam L4.
- the laser beam L 4 is subjected to horizontal and vertical position corrections by the high speed deflector 16, and then enters the polygon mirror 5.
- the laser beam L 4 reflected by the polygon mirror 5 is incident on the first reflection surface FCS 1 of the free-form surface mirror 12, and as the polygon mirror 5 rotates, the reflection surface FCS 1 is an end on the polygon mirror 5 side. Scan sequentially from The laser beam L4 reflected by the reflection surface FCS1 is incident on the galvano mirror 7 and the projection lens 8 along the optical path shown by the thick line 11 in FIG. 5A, and is projected onto the screen 9 from left to right.
- the laser beam L4 is incident on the second reflection surface FCS2, and sequentially scans the reflection surface FCS2 from the end on the polygon mirror 5 side.
- the laser beam L4 reflected by the reflection surface FCS2 is incident on the galvano mirror 7 and the projection lens 8 along the optical path shown by the dotted line 12 in FIG. 5A, and is projected on the screen 9 in the right direction and the left direction.
- the laser beam L4 is incident on the third reflection surface FCS3, and sequentially scans the reflection surface FCS3 from the end on the polygon mirror 5 side.
- the laser beam L4 reflected by the reflection surface FCS3 is incident on the galvano mirror 7 and the projection lens 8 along the light path indicated by the thin line 13 in FIG. 5A, and is projected onto the screen 9 from left to right.
- the control similar to that of the first embodiment is performed regarding other control performed by the controller 20, such as motor rotation number control, output control of RGB signals using a line memory (not shown), and the like.
- a plurality of reflections on the reflection light path of polygon mirror 5 are obtained.
- the shape of the free-form surface mirror 12 is designed such that the free-form surface mirror 12 having a surface is disposed, and each of the laser beams L4 reflected on the respective reflection surfaces has an equal scanning range on the screen 9, Since each laser beam L4 reflected by each reflecting surface of the curved mirror 12 is projected to the screen 9, while the laser beam L4 is reflected by the reflecting surface 1 of the polygon mirror 5, the laser beam L4 is reflected on the screen 9 A plurality of scans can be performed, which makes it possible to reduce the number of rotations of the polygon mirror 5 and reduce noise and power consumption when the polygon mirror rotates. Further, even if the rotation speed of the polygon mirror 5 is fixed at a predetermined rotation speed, it is not necessary to increase the number of faces of the polygon mirror 5 in order to scan the screen 9 more frequently. It is possible to miniaturize the mirror 5.
- Embodiment 3 The same effects as those of Embodiment 3 can be obtained by applying the laser display device 32 of Embodiment 3 above to either a front projection type display device or a rear projection type display device. You can get
- the coherent light scanning system 32a of the third embodiment can be applied to a laser beam printer to enable high speed and high quality printing, and the like.
- the present invention can be applied to a copying machine or a facsimile machine that performs printing using a laser beam printer.
- the force D4 input terminal, the DVI-D input terminal, the IEEE 1394 terminal, the component terminal, the S terminal, the video terminal, etc., which input RGB signals, are provided. It may be made to correspond to signal formats other than RGB signals.
- the number of scanning lines is further increased by incorporating the optical path forming units 30b and 30c of the first embodiment or the second embodiment into the coherent light scanning system 32a of the third embodiment, thereby obtaining a polygon mirror. Let's reduce the number of revolutions of.
- a laser beam reflected by a polygon mirror is made incident on a free-form surface mirror so that a plurality of lines can be scanned on the screen, and rotation in the direction perpendicular to the free-form surface mirror is achieved.
- FIG. 6 is a schematic diagram illustrating a laser display device 33 according to a fourth embodiment of the present invention.
- FIG. 6 is a schematic diagram illustrating a laser display device 33 according to a fourth embodiment of the present invention.
- the laser display device 33 of the fourth embodiment performs vertical scanning by rotation of the galvano mirror 7 in the laser display device 32 of the third embodiment described above by rotation of the free-form surface mirror 12. .
- the laser display device 33 of the fourth embodiment is a polygon mirror 5, a rotatable free-form surface mirror 12a, and a free-form mirror 12a which replace the coherent light scanning system 32a of the laser display device 32 of the third embodiment. It has a rotating mechanism (not shown) for rotating the curved mirror 12a and a coherent light scanning system 33a consisting of a projection lens 8, and a mirror tilter 28 for driving the rotating mechanism, and tilt Device driver 27.
- the laser display device 33 includes the galvanometer mirror 7, the mirror tilter 26a, and the tilter driver 25a in the third embodiment.
- the shapes of the reflecting surfaces FCSla, FCS2a, FCS3a of the free curved surface mirror 12a prevent the deformation of the laser light L4 when the free curved surface mirror 12a is rotated in the vertical direction, and affect the scanning in the vertical direction.
- the shape of the reflecting surface is optimized so as not to give.
- the shape of the reflection surface of the free curved mirror 12a can be determined by the same process as that of the third embodiment described above.
- the laser beams LI, L2 and L3 outputted from the laser light sources 1, 2 and 3 are multiplexed by using the dichroic mirror 10a and 10b to become a laser beam L4.
- the laser beam L4 is reflected by the polygon mirror 5, and similarly to the third embodiment, sequentially enters the first, second, and third reflecting surfaces FCS1, FCS2, and FCS3.
- the controller 20 b controls the mirror tilter 28 via the tilt driver 27, and the free curved mirror 12 a changes the tilt angle while reflecting the laser beam L 4 on each reflection surface. While guiding the laser beam L4 to the projection lens 8.
- the laser beam L4 incident on the projection lens 8 is projected on the screen 9, whereby the laser beam L4 is projected on the screen 9 in a light path indicated by 11 to 13 while the laser beam L4 is reflected on one surface of the polygon mirror 5. This will result in three horizontal scans on screen 9.
- the other controls such as the control of the rotational speed of motor 24 are the same as controller 20 in the third embodiment. Control is performed.
- free-form surface mirror 12a having a plurality of reflection surfaces is disposed on the reflection light path of polygon mirror 5, and the shape of each reflection surface of free-form surface mirror 12a is
- the laser beam L4 reflected by each reflecting surface is shaped to have an equal scanning range on the power screen 9, and while the polygon mirror 5 scans the laser beam L4, the free-form surface mirror 12a is used as the screen 9.
- the free-form surface mirror 12a is used as the screen 9.
- it since it is made to rotate in the vertical direction, it is possible to realize a laser display device with small noise and power consumption at the time of polygon mirror rotation, which suppresses the number of rotations of polygon mirror 5 with a small number of parts. .
- Embodiment 4 The same effects as in Embodiment 4 can be obtained by applying the laser display device 33 of Embodiment 4 to either a front projection display device or a rear projection display device. You can get In the fourth embodiment, the shapes of the mirrors 6a and 6b are flat, and the shapes of the force mirrors 6a and 6b can be optimized according to the type of the display device. It may be.
- the coherent optical scanning system 33a of the fourth embodiment can be applied to a laser beam printer to enable high-speed and high-quality printing, and the like.
- the present invention can be applied to a copying machine or a facsimile machine that performs printing using a laser beam printer.
- the force D4 input terminal, the DVI-D input terminal, the IEEE 1394 terminal, the component terminal, the S terminal, the video terminal, and the like for inputting RGB signals are provided. It may be made to correspond to signal formats other than RGB signals.
- the number of scanning lines is further increased by incorporating the optical path forming units 30b and 30c of the first embodiment or the second embodiment into the coherent light scanning system 30e of the fourth embodiment, thereby obtaining a polygon mirror. Let's reduce the number of revolutions of.
- the display apparatus and the scanning method thereof according to the present invention are useful in that it is possible to achieve low power consumption and noise reduction of a display device for displaying an image by scanning coherent light. It is.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04820253A EP1693696A4 (en) | 2003-12-10 | 2004-12-09 | DISPLAY UNIT AND CORRESPONDING SCAN METHOD |
JP2005516161A JP4036340B2 (ja) | 2003-12-10 | 2004-12-09 | ディスプレイ装置およびその走査方法 |
US10/582,340 US7593151B2 (en) | 2003-12-10 | 2004-12-09 | Display unit and scanning method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-412125 | 2003-12-10 | ||
JP2003412125 | 2003-12-10 |
Publications (1)
Publication Number | Publication Date |
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WO2005057269A1 true WO2005057269A1 (ja) | 2005-06-23 |
Family
ID=34675015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/018362 WO2005057269A1 (ja) | 2003-12-10 | 2004-12-09 | ディスプレイ装置およびその走査方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7593151B2 (ja) |
EP (1) | EP1693696A4 (ja) |
JP (1) | JP4036340B2 (ja) |
KR (1) | KR20060112664A (ja) |
CN (1) | CN100472273C (ja) |
WO (1) | WO2005057269A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7922336B2 (en) * | 2005-03-01 | 2011-04-12 | Panasonic Corporation | Light source device for display device, display device, and method for adjusting image of display device |
JP4845456B2 (ja) * | 2005-09-02 | 2011-12-28 | キヤノン株式会社 | 光走査装置および画像形成装置 |
EP2037312A4 (en) * | 2006-10-11 | 2011-07-20 | Panasonic Corp | LASER DISPLAY DEVICE |
US8107147B2 (en) * | 2009-03-27 | 2012-01-31 | Microvision, Inc. | Two-mirror scanning system |
DE102009021764A1 (de) * | 2009-05-18 | 2010-12-02 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Laserscanner |
JP2014187601A (ja) * | 2013-03-25 | 2014-10-02 | Sony Corp | 画像処理装置、画像処理方法、及び、プログラム |
CN104714297B (zh) * | 2013-12-11 | 2017-02-15 | 清华大学 | 自由曲面反射式扫描系统 |
JP6726743B2 (ja) * | 2016-07-19 | 2020-07-22 | マクセル株式会社 | 投写型映像表示装置 |
CN116088164A (zh) * | 2023-03-27 | 2023-05-09 | 南通唐人电子科技有限公司 | 将一维入射转换为二维光路的场镜折射面设置方法及装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5026305B1 (ja) * | 1970-12-28 | 1975-08-30 | ||
JPS5752031A (en) * | 1980-09-12 | 1982-03-27 | Canon Inc | Light beam scanner |
JPS6413114A (en) * | 1987-07-06 | 1989-01-18 | Fujitsu Ltd | Optical scanner |
JPH02259617A (ja) * | 1989-03-30 | 1990-10-22 | Sony Corp | レーザビーム偏向装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5026305A (ja) | 1973-07-11 | 1975-03-19 | ||
JPS55111917A (en) | 1979-02-22 | 1980-08-29 | Toshiba Corp | Reciprocating photo scanner |
JPS63267909A (ja) * | 1987-04-27 | 1988-11-04 | Takanari Kawabe | 高速回転多面鏡機械的偏光器 |
US5386221A (en) | 1992-11-02 | 1995-01-31 | Etec Systems, Inc. | Laser pattern generation apparatus |
US5929892A (en) * | 1996-08-26 | 1999-07-27 | Hewlett-Packard Company | Beam deflecting for enhanced laser printer scanning |
US6511184B2 (en) * | 2000-04-05 | 2003-01-28 | Matsushita Electric Industrial Co., Ltd. | Color image display apparatus |
JP2002148554A (ja) * | 2000-11-03 | 2002-05-22 | Samsung Electronics Co Ltd | 光スキャナ及びこれを適用したレーザ映像投射装置並びにその駆動方法 |
US6594090B2 (en) | 2001-08-27 | 2003-07-15 | Eastman Kodak Company | Laser projection display system |
KR100459899B1 (ko) * | 2002-03-12 | 2004-12-04 | 삼성전자주식회사 | 다중채널음향 광 변조기를 구비하는 레이저 영상투사장치및 그 구동방법과 구동회로 |
CN1438510A (zh) * | 2003-01-08 | 2003-08-27 | 王青山 | 一种分区多行扫描式激光投影机 |
-
2004
- 2004-12-09 JP JP2005516161A patent/JP4036340B2/ja not_active Expired - Fee Related
- 2004-12-09 US US10/582,340 patent/US7593151B2/en not_active Expired - Fee Related
- 2004-12-09 CN CNB2004800344598A patent/CN100472273C/zh not_active Expired - Fee Related
- 2004-12-09 WO PCT/JP2004/018362 patent/WO2005057269A1/ja active Application Filing
- 2004-12-09 KR KR1020067011276A patent/KR20060112664A/ko not_active Application Discontinuation
- 2004-12-09 EP EP04820253A patent/EP1693696A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5026305B1 (ja) * | 1970-12-28 | 1975-08-30 | ||
JPS5752031A (en) * | 1980-09-12 | 1982-03-27 | Canon Inc | Light beam scanner |
JPS6413114A (en) * | 1987-07-06 | 1989-01-18 | Fujitsu Ltd | Optical scanner |
JPH02259617A (ja) * | 1989-03-30 | 1990-10-22 | Sony Corp | レーザビーム偏向装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1693696A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP4036340B2 (ja) | 2008-01-23 |
EP1693696A1 (en) | 2006-08-23 |
EP1693696A4 (en) | 2008-02-06 |
JPWO2005057269A1 (ja) | 2007-12-13 |
US7593151B2 (en) | 2009-09-22 |
US20070081220A1 (en) | 2007-04-12 |
KR20060112664A (ko) | 2006-11-01 |
CN1882866A (zh) | 2006-12-20 |
CN100472273C (zh) | 2009-03-25 |
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