WO2005091048A1 - 網膜走査型ディスプレイおよび信号処理装置 - Google Patents
網膜走査型ディスプレイおよび信号処理装置 Download PDFInfo
- Publication number
- WO2005091048A1 WO2005091048A1 PCT/JP2005/004914 JP2005004914W WO2005091048A1 WO 2005091048 A1 WO2005091048 A1 WO 2005091048A1 JP 2005004914 W JP2005004914 W JP 2005004914W WO 2005091048 A1 WO2005091048 A1 WO 2005091048A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- signal
- light intensity
- input
- unit
- Prior art date
Links
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/02—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
Definitions
- the present invention relates to a technique for displaying an image to an observer by scanning a light beam two-dimensionally on the retina of the observer, and in particular, to a technique for improving the reproducibility of content by a display image. It is about.
- the retinal scanning display generally includes (a) an emission unit (for example, a light source) for emitting a light beam, and (b) an optical modulation device for modulating an optical characteristic of the light beam based on an input light modulation signal. And (c) a scanning unit that two-dimensionally scans the modulated light beam.
- an emission unit for example, a light source
- an optical modulation device for modulating an optical characteristic of the light beam based on an input light modulation signal.
- a scanning unit that two-dimensionally scans the modulated light beam.
- the "light modulation unit” is generally configured to include a light intensity modulation unit that modulates light intensity (also referred to as luminance), which is an example of optical characteristics of a light beam.
- the light intensity modulating unit may be, for example, of a type (for example, an acousto-optic modulator) configured independently of the emission unit, or of a type (for example, a semiconductor laser) configured to be incorporated in the emission unit. It is possible.
- the above-described light modulator may be configured to further include a wavefront modulator that modulates a wavefront curvature, which is another example of the optical characteristics of the light beam, based on the input depth signal. .
- the "wavefront modulating unit” is, for example, a format that modulates a wavefront curvature for each part (for example, a pixel) constituting an image, or a format that modulates a wavefront curvature for each frame of an image. (A plurality of parts constituting the same frame may have a common wavefront curvature).
- the light representing the command value of the intensity of the light beam is provided.
- the light intensity modulator modulates the intensity of the light beam in response to the intensity signal.
- the light beam whose intensity has been modulated by the light intensity modulator is two-dimensionally scanned by the scanning unit, and the actual value of the light intensity of the light beam thus scanned (hereinafter referred to as “actual light intensity value”) is obtained. This is recognized as a display image by the observer.
- the present inventor has conducted research on a technique for improving the color reproducibility of content by a display image in this type of retinal scanning display. As a result, the inventor has found that the color reproducibility varies for each dot of the display image, the color reproducibility varies for each color component of the luminous flux, and the light intensity command value (hereinafter referred to as the ⁇ light intensity command value It was noted that the light intensity of the displayed image, that is, the actual light intensity value did not change sufficiently linearly.
- depth actual value the actual depth value
- depth command value the command value
- the present invention relates to a technique for displaying an image to an observer by scanning a light beam two-dimensionally on the retina of the observer, and thus the light to be input to the light modulator. It is an object of the present invention to improve the reproducibility of content by a display image by correcting a modulation signal.
- a retinal scanning display that displays an image to an observer by two-dimensionally scanning a light beam on the observer's retina
- An emission unit that emits the light beam
- An optical modulator that modulates the optical characteristics of the light beam based on the input light modulation signal; a scanning unit that scans the modulated light beam two-dimensionally;
- the light modulation signal to be input to the light modulation unit is corrected so that the linearity of the light modulation command value-actual value relationship between the light modulation command value and the actual value of the optical characteristic increases.
- a retinal scanning display including:
- a light modulation signal to be input to the light modulation unit is a linear relationship between the command value and the actual value of the light modulation command value and the actual value of the optical characteristic of the light flux.
- the correction is performed so that the characteristic is increased from before the correction of the light modulation signal.
- the first correction device may be configured to control the light modulation unit so that the linearity of the light modulation command value-actual value relationship increases regardless of the input / output characteristics of the light modulation unit.
- the retinal scanning display according to item (1) which corrects an optical modulation signal to be input.
- the light modulation unit includes a light intensity modulation unit that modulates the intensity of the light beam based on the input light intensity signal.
- this retinal scanning display it is possible to increase the linearity of the relationship between the command value and the actual value with respect to the intensity of the luminous flux, thereby improving the reproducibility of the color of the content by the display image. It is possible to do.
- the emission section emits component light beams of a plurality of colors
- the light intensity modulating unit modulates the intensity of each component light flux based on the input light intensity signal for each component light flux
- the retinal scanning display further includes a combining unit that combines the component light beams of the plurality of colors into a combined light beam after the intensity of each component light beam is modulated by the light intensity modulation unit.
- the scanning unit scans the combined light beam two-dimensionally, and the first correction device outputs a light intensity signal to be input to the light intensity modulation unit for each component light beam.
- the retinal scanning ⁇ -type display according to item (3) including a first correction unit that corrects the linearity of the light intensity command value-actual value relationship between the light intensity command value and the actual value so as to increase. .
- the present inventor has proposed a retinal scanning system in which an image is displayed to an observer by two-dimensionally scanning a combined light beam obtained by combining component light beams of a plurality of colors on the retina of the observer's eye.
- a technology to correct the light intensity signal to be input to the light intensity modulation unit.
- the present inventor has found that unless the light intensity signal to be input to the light intensity modulation unit is corrected for each component light beam of each color, the color reproducibility of the displayed image may be reduced. I noticed.
- the light intensity signal to be input to the light intensity modulation unit is determined by comparing the light intensity command value with the actual value. Is corrected to increase the linearity of the relationship between the command value and the actual value during
- the linearity of the light intensity command value-actual value relationship is increased for all of the component light beams of a plurality of colors. Therefore, regardless of the light intensity command value, the color balance of the display image is stabilized, and the reproducibility of the color of the content by the display image can be improved.
- the scanning section scans the light beam by changing the angle of the reflection surface that reflects the light beam incident thereon
- the retinal scanning display further includes: Irrespective of the characteristic that the ratio varies with the angle of the reflecting surface, the light is applied so that the actual value of the intensity of the light beam irradiated to each part of the image to be displayed does not change depending on the position of each part.
- the intensity of the luminous flux applied to each part of the image to be displayed is irrespective of the characteristic that the reflectance of the reflecting surface in the scanning unit varies depending on the angle of the reflecting surface.
- the light intensity signal to be input to the light intensity modulation unit is corrected so that the actual value does not change depending on the position of each part of the image to be displayed, which is irradiated by the light beam.
- each part of the image to be displayed in this section can be, for example, each pixel or a pixel group having a plurality of adjacent pixels.
- the light modulation unit includes a wavefront modulation unit that modulates a wavefront curvature of the light beam based on the input depth signal,
- the first correction device corrects a depth signal to be input to the wavefront modulation unit such that the linearity of a depth command value-actual relationship between the depth command value and the actual value increases.
- the retinal scanning display according to any one of (1) to (5), including a second correction unit.
- the second correction unit is input to the wavefront modulation unit such that the linearity of the relationship between the depth command value and the actual value increases regardless of the input / output characteristics of the wavefront modulation unit.
- Rube The retinal scanning display according to item (6), which corrects a depth signal.
- a retinal scanning display that displays an image to an observer by scanning a light beam two-dimensionally on the retina of the observer
- An emission unit that emits the light beam
- a light intensity modulator that modulates the intensity of the light beam based on the input light intensity signal; a wavefront modulator that modulates the wavefront curvature of the light beam based on the input depth signal;
- a scanning unit that two-dimensionally scans the modulated light beam; and a first unit that corrects a light intensity signal to be input to the light intensity modulation unit based on a light intensity command value represented by the light intensity signal.
- a depth signal to be input to the section based on a depth command value represented by the depth signal, and at least one of a third correction device for correcting the depth signal.
- a retinal scanning display including:
- the light intensity signal to be input to the light intensity modulation unit is the light intensity signal represented by the light intensity signal. It is corrected based on the command value. Therefore, in this case, for example, it is possible to increase the linearity of the relationship between the command value and the actual value with respect to the intensity of the luminous flux, and to maintain the color balance of the displayed image even when the light intensity command value is changed. It becomes.
- the light intensity signal to be input to the light intensity modulation unit is a signal of the image to be displayed.
- the correction is performed based on the position of each part to which the light beam is sequentially irradiated. Therefore, in this case, for example, it is possible to reduce light intensity unevenness in a display image.
- the depth signal to be input to the wavefront modulation unit is represented by the depth signal.
- the depth is corrected based on the command value of the depth. Therefore, in this case, For example, it is possible to increase the linearity of the relationship between the command value and the actual value for the depth or the focus position of the display image.
- a retinal scanning display for displaying an image to an observer by two-dimensionally scanning a light beam on the retina of the observer, and (a) an emission unit for emitting the light beam; (b) an optical modulator that modulates the optical characteristics of the light beam based on the input light modulation signal; and (c) a scanner that scans the modulated light beam two-dimensionally.
- Signal processing device for displaying an image to an observer by two-dimensionally scanning a light beam on the retina of the observer, and (a) an emission unit for emitting the light beam; (b) an optical modulator that modulates the optical characteristics of the light beam based on the input light modulation signal; and (c) a scanner that scans the modulated light beam two-dimensionally.
- the light modulation signal to be input to the light modulation unit is corrected so that the linearity of the relationship between the light modulation command value and the actual value between the light modulation command value and the actual value of the optical characteristic increases.
- Signal processing device including the first correction device.
- the light modulation signal to be input to the light modulation unit is a line between the command value and the actual value between the light modulation command value and the actual value of the optical characteristic of the light beam.
- the shape is corrected so that the shape is increased from before the light modulation signal is corrected.
- the linearity of the relationship between the light modulation command value and the actual value is increased for the optical characteristics of the light beam. Therefore, it is possible to improve the reproducibility of the color of the content by the display image.
- the signal processing device may be configured to be configured independently of a retinal scanning display used together therewith, or may be configured to be incorporated in the retinal scanning display.
- the first correction device may be configured to control the light modulation unit so that the linearity of the relationship between the light modulation command value and the actual value increases regardless of the input / output characteristics of the light intensity modulation unit.
- this signal processing device it is possible to increase the linearity of the relationship between the light modulation command value and the actual value, irrespective of the input / output characteristics of the light modulation unit. Color reproducibility can be improved.
- the linear relationship between the command value and the actual value with respect to the intensity of the light beam It is possible to improve the reproducibility of the color of the content by the display image.
- the emission section emits component light beams of a plurality of colors
- the light intensity modulating unit modulates the intensity of each component light flux based on the input light intensity signal for each component light flux
- the retinal scanning display further includes a combining unit that combines the component light beams of the plurality of colors into a combined light beam after the intensity of each component light beam is modulated by the light intensity modulation unit.
- the scanning unit scans the combined light beam two-dimensionally, and the first correction device outputs a light intensity signal to be input to the light intensity modulation unit for each component light beam.
- the signal processing device further including a first correction unit that corrects the linearity of the light intensity command value-actual value relationship between the light intensity command value and the actual value so as to increase.
- the linearity of the light intensity command value-actual value relationship increases for all of the component light beams of a plurality of colors. Therefore, regardless of the light intensity command value, the color balance of the display image is stabilized, and the reproducibility of the color of the content by the display image can be improved.
- the scanning section scans the light beam by changing the angle of a reflection surface that reflects the light beam incident thereon,
- the signal processing device further includes an intensity of the light beam radiated to each part of the image to be displayed, regardless of a characteristic that a reflectance of the reflection surface in the scanning unit varies depending on an angle of the reflection surface.
- the actual intensity of the luminous flux applied to each part of the image to be displayed is determined.
- the light intensity signal to be input to the light intensity modulation unit is supplemented so that the value does not change depending on the position of each part of the image to be displayed which is irradiated by the light beam. Corrected.
- this signal processing device it is possible to reduce light intensity unevenness in a display image regardless of the characteristic in which the reflectance of the reflection surface in the scanning unit varies depending on the angle of the reflection surface.
- the light modulation unit includes a wavefront modulation unit that modulates a wavefront curvature of the light beam based on the input depth signal,
- the first correction device corrects a depth signal to be input to the wavefront modulation unit such that the linearity of a depth command value-actual relationship between the depth command value and the actual value increases.
- the signal processing device according to any one of (9) to (13), including the second correction unit.
- the depth signal to be input to the wavefront modulation unit is corrected so that the linearity of the depth command value-actual relationship between the depth command value and the actual value increases. Is done.
- the linearity of the actual depth value with respect to the depth command value increases, and the reproducibility of the focus position of the content on the display image can be improved.
- the second correction unit inputs the wavefront modulation unit such that the linearity of the relationship between the depth command value and the actual value increases regardless of the input / output characteristics of the wavefront modulation unit.
- the signal processing device which corrects a depth signal to be performed.
- this signal processing device it is possible to increase the linearity of the relationship between the depth command value and the actual value regardless of the input / output characteristics of the wavefront modulation unit.
- a retinal scanning display that displays an image to an observer by two-dimensionally scanning a light beam on the retina of the observer, and (a) an emission unit that emits the light beam ,
- a signal processing device for use with
- a light intensity signal to be input to the light intensity modulation unit is represented by the light intensity signal.
- a third correction device that corrects a depth signal to be input to the wavefront modulator based on a depth command value represented by the depth signal. At least one of
- a signal processing device including:
- the light intensity signal to be input to the light intensity modulation unit is a command of the light intensity represented by the light intensity signal. It is corrected based on the value. Therefore, in this case, for example, the linearity of the relationship between the command value and the actual value of the luminous flux is increased in calorie, and the color balance of the displayed image is maintained even if the light intensity command value is changed. Becomes possible.
- the light intensity signal to be input to the light intensity modulation unit is the light intensity signal of the image to be displayed.
- the correction is performed based on the position of each portion to which the bundle is sequentially irradiated. Therefore, in this case, for example, it is possible to reduce light intensity unevenness in a display image.
- the depth signal to be input to the wavefront modulation unit is the depth signal represented by the depth signal. It is corrected based on the command value. Therefore, in this case, for example, it is easy to increase the linearity of the relationship between the command value and the actual value with respect to the depth or the focus position of the display image.
- FIG. 1 is a system diagram showing a retinal scanning display according to a first embodiment of the present invention, together with a signal processing device 39.
- FIG. 2 is a side view for explaining an operation mode of the wavefront modulator 22 in FIG. 1.
- FIG. 3 is a block diagram conceptually showing a retinal scanning display in FIG. 1 together with a connection relationship with a signal processing device 39.
- FIG. 4 is a block diagram conceptually showing the signal processing device 39 in FIG. 3.
- FIG. 5 is a diagram for explaining light intensity correction by the signal processing device 39 in FIG. 3.
- FIG. 6 is an enlarged plan view showing a polygon mirror 104 in FIG. 1.
- FIG. 7 is a graph for explaining the property that the reflectance of the polygon mirror 104 shown in FIG. 6 depends on the scanning angle ⁇ .
- FIG. 8 is a diagram for explaining depth correction by the signal processing device 39 in FIG. 3.
- FIG. 9 is an exploded perspective view showing an optical scanner 1104 in a horizontal scanning system 1100 in the retinal scanning display according to the second embodiment of the present invention.
- FIG. 10 is a diagram showing a driving source 1150, 1
- FIG. 11 is a perspective view showing a vibrating body 1124 in FIG. 9 taken out therefrom.
- FIG. 12 is a perspective view showing a reflection mirror portion 1122 of the vibrating body 1124 shown in FIG.
- FIG. 13 is a graph showing a temporal transition of a scanning angle ⁇ and a scanning angular velocity ⁇ of the reflection mirror unit 1122 shown in FIG.
- FIG. 14 is a graph showing how the apparent reflectance of the reflection mirror 1122 shown in FIG. 11 changes together with the pixel number ⁇ .
- FIG. 1 systematically shows a retinal scanning display (hereinafter abbreviated as “RSD”) according to the first embodiment of the present invention.
- RSD retinal scanning display
- This RSD allows a laser beam to enter the retina 14 through the pupil 12 of the observer's eye 10 while appropriately modulating the light intensity and wavefront of the laser beam.
- This is a device that projects an image directly on the retina 14 by scanning two-dimensionally.
- the RSD includes a light source unit 20, and a wavefront modulator 22 and a scanning device 24 between the light source unit 20 and the observer's eye 10 in that order.
- the light source unit 20 converts three laser beams having three primary colors (RGB) (an example of “component light beams of a plurality of colors” in the above item (1)) into one laser beam (in the same item). This is an example of a “combined light beam.”
- RGB primary colors
- An R laser 30 emitting a red laser beam
- a G laser 32 emitting a green laser beam
- a blue laser beam A B laser 34 that emits a laser beam.
- Each of the lasers 30, 32, and 34 can be configured as, for example, a semiconductor laser.
- Each of the lasers 30, 32, and 34 has a light intensity modulation function of modulating the light intensity (luminance) of the laser beam of each color emitted from each of the lasers 30, 32, and 34 according to the input voltage signal. And then. That is, the lasers 30, 32, and 34 cooperate with each other to form a combination of an example of the "emitter” and an example of the "light intensity modulator” in the above item (1).
- each of the lasers 30, 32, and 34 is provided with a light intensity modulator (for example, an acousto-optic modulation element AOM) that is independent of each other.
- the lasers 30, 32, and 34 cooperate with each other to form an example of the “emission section” in the above item (1), and the lasers 30, 32, and 34 respectively associated with the three lasers 30, 32, and 34
- the two light intensity modulators constitute one example of the “light intensity modulation section” in the same section in cooperation with each other.
- each laser 30, 32, 34 is electrically connected to a corresponding laser driver 36, 37, 38.
- the laser driver 36 corresponding to the R laser 30 is also supplied with an R signal, which is a light intensity signal for modulating the light intensity of the red laser beam, by the signal processing device 39.
- the G signal which is a light intensity signal for modulating the light intensity of the green laser beam, is supplied from the signal processor 39, and the laser driver 37 corresponding to the B laser 34 receives the light of the blue laser beam.
- a signal B which is a light intensity signal for modulating the intensity, is supplied from the signal processing device 39.
- Each of the laser drivers 36, 37, and 38 applies a voltage (electric energy) to each of the lasers 30, 32, and 34 according to the input light intensity signal.
- Each laser 30, 32, 34 modulates the light intensity of the laser beam emitted from each laser 30, 32, 34 according to the applied voltage.
- the applied voltage and the light intensity modulated by the applied voltage do not change linearly, and the relationship between the two is, for each of the lasers 30, 32, and 34, A different power for each wavelength of the laser beam This will be described in detail later.
- the laser beams emitted from the respective lasers 30, 32, 34 are collimated by the respective collimating optical systems 40, 42, 44, and thereafter, are incident on the respective dichroic mirrors 50, 52, 54.
- the dichroic mirrors 50, 52, and 54 the selective transmission and reflection of the laser beam depending on the wavelength are performed, whereby the three color laser beams are combined into one laser beam.
- the red laser beam emitted from the R laser 30 is collimated by the collimating optical system 40, and then is incident on the dichroic mirror 50.
- the green laser beam emitted from the G laser 32 is made incident on a dichroic mirror 52 via a collimating optical system 42.
- the blue laser beam emitted from the B laser 34 is made incident on a dichroic mirror 54 via a collimating optical system 44.
- the three-color laser beams incident on the three dichroic mirrors 50, 52, and 54, respectively, are finally converted into one dichroic mirror 54 representing the three dichroic mirrors 50, 52, and 54.
- the incident light is focused and then collected by the coupling optics 58.
- the three collimating optical systems 40, 42, 44, the three dichroic mirrors 50, 52, 54, and the coupling optical system 58 cooperate with each other to form the multiplexing optical system 60.
- the multiplexing optical system 60 is an example of the “combining unit” in the above section (1).
- the light source unit 20 described above emits a laser beam in the coupling optical system 58.
- the laser beam emitted therefrom passes through an optical fiber 82 as an optical transmission medium and a collimating optical system 84 that collimates the laser beam that also radiates the rear end force of the optical fiber 82 in that order, and then passes through the wavefront modulator. It is incident on 22.
- the wavefront modulator 22 is an optical system that modulates the wavefront (wavefront curvature) of the laser beam emitted from the light source unit 20.
- the wavefront modulator 22 can be configured to modulate the wavefront curvature for each pixel of the image to be projected onto the retina 14, but this is not essential for implementing the present invention. It is possible to use a format that is performed for each frame of the stroking image. When the wavefront curvature is modulated, the focus position of the displayed image changes.
- the laser beam incident as parallel light from the collimating optical system 84 is converted into convergent light by the converging lens 90, and the converted convergent light is reflected by the movable mirror 92 and converted into diffused light. Is done.
- the converted diffused light is emitted from the wavefront modulator 22 as a laser beam having a target wavefront curvature.
- FIG. 2 shows the wavefront modulator 22 in an enlarged manner.
- the wavefront modulator 22 includes a beam splitter 94 that reflects or transmits a laser beam that also receives an external force, a converging lens 90 that converges the laser beam that has passed through the beam splitter 94, A movable mirror 92 that reflects the laser beam converged by the converging lens 90 is provided.
- the wavefront modulator 22 further includes an actuator 96 for displacing the movable mirror 92 in a direction approaching the convergent lens 90 or in a direction away from the convergent lens 90.
- the actuator 96 is a piezoelectric element.
- Actuator 96 modulates the wavefront curvature of the laser beam emitted from wavefront modulator 22 by moving the position of movable mirror 92 in accordance with the depth signal (Z signal) input from signal processing device 39. .
- the actuator 96 the relationship between the applied voltage and the wavefront curvature modulated by the applied voltage is not linear. This will be described later in detail.
- the movable mirror 92 Reflected at. Then, the light again passes through the converging lens 90, and then passes through the beam splitter 94 to the scanning device 24.
- the wavefront modulator 22 changes the distance dc between the converging lens 90 and the movable mirror 92 by using an actuator 96 to change the laser beam incident from the collimating optical system 84 and directed to the scanning device 24.
- the wavefront curvature can be changed.
- the laser beam incident from the collimating optical system 84 converges on the reflecting surface of the movable mirror 92. And reflect.
- the reflected laser beam travels through the converging lens 90 to the scanning device 24 as parallel light L1 having the same wavefront curvature as when entering from the collimating optical system 30.
- FIG. 2A shows that when the distance dc matches the predetermined initial value dcO, the laser beam incident from the collimating optical system 84 converges on the reflecting surface of the movable mirror 92. And reflect.
- the reflected laser beam travels through the converging lens 90 to the scanning device 24 as parallel light L1 having the same wavefront curvature as when entering from the collimating optical system 30.
- the laser beam incident from the collimating optical system 84 Since the laser beam is located closer to the converging lens 90 than the focal point of the converging lens 90, the laser beam is reflected by the reflecting surface of the movable mirror 92 before the laser beam converges.
- the reflected laser beam converges at a position advanced from the movable mirror 92 by a distance (dcO-del), and then diffused from the collimating optical system 30 and diffused more than when entering the collimating optical system 30, that is, diffused light having a large wavefront curvature,
- the light becomes divergent light L2 having a small radius of curvature, and travels to the scanning device 24 via the converging lens 90.
- the radius of curvature of the laser beam from the curvature modulator 22 to the scanning device 24 decreases as the distance between the laser beams decreases.
- the initial value dc0 of the interval dc is set to 4 mm, and while the interval dc is narrowed by 30 ⁇ m from its initial value dcO, the radius of curvature of the laser beam becomes the maximum value (for example, 10 m).
- This RSD is configured to vary from) to a minimum value (eg, 20 cm).
- the radius of curvature of the wavefront of a laser beam is represented by the reciprocal of the wavefront curvature, and a virtual image based on the laser beam is recognized by the observer at a position closer to the observer as the radius of curvature is smaller. You. Therefore, the virtual image is recognized by the observer at a position closer to the observer as the distance dc is shortened by the factor 96.
- the laser beam emitted from the wavefront modulator 22 described above enters the scanning device 24.
- the scanning device 24 includes a horizontal scanning system 100 and a vertical scanning system 102. Focusing on the respective scanning speeds, the horizontal scanning system 100 and the vertical scanning system 102 are classified into a high-speed scanning system and a low-speed scanning system, respectively.
- the horizontal scanning system 100 is an optical system that performs horizontal scanning in which a laser beam is raster-scanned horizontally along a plurality of horizontal scanning lines for each frame of an image to be displayed.
- the vertical scanning system 102 is an optical system that performs vertical scanning in which a laser beam is vertically scanned from a first scanning line to a last scanning line for each frame of an image to be displayed.
- the horizontal scanning system 100 includes a polygon mirror 104 as a one-way rotating mirror that performs mechanical deflection.
- the polygon mirror 104 is rotated at high speed by a motor (not shown) around a rotation axis intersecting the optical axis of the laser beam incident thereon.
- the rotation speed of the polygon mirror 104 is determined by signal processing. It is controlled based on the horizontal scanning synchronization signal supplied from the device 39.
- the polygon mirror 104 includes a plurality of reflecting surfaces 106 arranged around the rotation axis, and is deflected once each time the laser beam passes through the reflecting surface 106 of the incident laser beam power.
- the deflected laser beam is transmitted to the vertical scanning system 102 by the relay optical system 110.
- the relay optical system 110 includes a plurality of lens systems 112 and 114 in series on the optical path.
- the horizontal scanning system 100 has been described above.
- the vertical scanning system 102 includes the galvano mirror 130 as a swing mirror that performs mechanical deflection.
- the laser beam emitted from the horizontal scanning system 100 is condensed by the relay optical system 110 and enters the galvanometer mirror 130.
- the galvanomirror 130 is swung about a rotation axis intersecting the optical axis of the laser beam incident thereon.
- the activation timing and rotation speed of the galvanometer mirror 130 are controlled based on a vertical scanning synchronization signal supplied from the signal processing device 39.
- the laser beam is two-dimensionally scanned by the cooperation of the horizontal scanning system 100 and the vertical scanning system 102 described above, and the image power expressed by the scanned laser beam is transmitted through the relay optical system 140 to the observer.
- the eye 10 is irradiated.
- a relay optical system 140 is provided on the optical path, and a plurality of lens systems 142 and 144 are provided in series.
- FIG. 3 is a block diagram conceptually showing the overall configuration of the RSD, and further shows the relationship with the signal processing device 39 used with the RSD.
- FIG. This is shown as a combination of the units 150, 152, 154 and the light intensity modulation units 160, 162, 164.
- the signal processing device 39 includes an R signal for the light intensity modulator 160 corresponding to the R light source unit 150, a G signal for the light intensity modulator 162 corresponding to the G light source unit 152, and a light intensity corresponding to the B light source unit 154.
- the modulation section 164 is supplied with the B signal.
- the signal processing device 39 further supplies a Z signal to the wavefront modulator 22, and supplies the horizontal scanning system 100 and the vertical scanning system 102 with a horizontal scanning synchronization signal and a vertical scanning synchronization signal, respectively. And supply.
- the signal processing device 39 is configured to exist independently of the RSD force, but may be configured to be incorporated in the RSD. Noh.
- the signal processing device 39 mainly includes an A / D 180, an image processing device 182, an LUT 184, and a DZA 186, as will be described later in detail with reference to FIG. Has been
- the signal processing device 39 includes an interface between a personal computer (hereinafter, simply referred to as “PC”) as an original image signal supply device and an RSD as a playback device. Used as connected.
- the PC supplies the signal processing device 39 with a light intensity signal including an R signal, a G signal and a B signal, and a Z signal as a depth signal as source signals.
- the signal processing device 39 corrects those signals and supplies them to the RSD.
- a light intensity signal (R signal, G signal, and B signal) representing the light intensity command value is actually output for each color laser beam. It increases the linearity of the relationship with the realized light intensity.
- the above-described signal correction includes a plurality of types of the following individual corrections.
- a Z signal supply device eg, PC
- the corrected original light intensity signals (the original R signal, the original G signal, and the original B signal) are corrected and supplied to the RSD as the corrected light intensity signals (the corrected R signal, the corrected G signal, and the corrected B signal).
- the reflectance depends on the scanning angle (the position of each scanning line in the vertical direction of the image, that is, the scanning line number NL), the light intensity command value and the actual light intensity value
- the corrected optical intensity signals (the corrected R signal, the corrected G signal Signal and correction B signal) to the RSD.
- the original Z signal original depth signal supplied from the PC in order to increase tl the linearity of the relationship between the depth command value and the actual depth value Is corrected and supplied to the RSD as a corrected Z signal (corrected depth signal).
- the configuration of the signal processing device 39 is conceptually and simply represented in a block diagram, focusing on characteristic functions.
- the AZD transformation (represented by “AZD” in FIG. 4) 180 is a digital signal that converts all the RZGZBZZ signals supplied to each pixel as an analog signal to the PC. Convert to data (8-bit data).
- the image processing circuit 182 outputs digital data for each pixel (hereinafter, also referred to as “pixel data”) in synchronization with the timing of the horizontal scanning synchronization signal and the vertical scanning synchronization signal for RSD. Is performed.
- a lookup table (represented by “LUT” in FIG. 4) 184 is referred to in order to perform the above-described signal correction on each pixel data.
- the LUT 184 corrects 8-bit pixel data to 12-bit pixel data.
- the correction characteristic is adjusted in advance so that the above-described purpose of signal correction is achieved.
- a DZA converter in Fig. 4, represented by "DZA"
- the LUT 184 is configured to include a plurality of individual tables (including a light intensity correction table, a horizontal scanning reflectance correction table, a vertical scanning reflectance correction table, and a depth correction table, which will be described later). Pre-stored in internal memory! RU
- FIG. 5 (a) shows the input / output characteristics of the R laser 30, that is, the relationship between the voltage applied to the R laser 30 and the actual light intensity of the laser beam output from the R laser 30.
- An example is shown in the graph.
- the input / output characteristics of the R laser 30 are non-linear.
- the relationship between the light intensity command value represented by the original R signal and the actual light intensity value output by the R laser 30 also becomes non-linear.
- the observer who uses this RSD may feel strange about the light intensity of the displayed image.
- the original light intensity data is corrected to be corrected light intensity data.
- the original light intensity signal is corrected.
- the correction characteristic is a characteristic that completely or partially cancels the nonlinearity represented by the graph in FIG. 5 (a). This correction characteristic is reflected in the light intensity correction table of the LUT 184.
- the R signal (corrected R signal) supplied to the laser driver 37 is determined based on the corrected light intensity data, and is actually applied to the R laser 30 according to the corrected R signal. The voltage is determined.
- a light intensity correction table is prepared for each of the lasers 30, 32, and.
- the light intensity correction is performed for the R signal, the G signal, and the B signal. This is performed individually by referring to the corresponding light intensity correction table.
- the above-described reflectance correction for horizontal scanning is performed by referring to the reflectance correction table for horizontal scanning of the LUT184.
- FIG. 6 is an enlarged plan view of the polygon mirror 104.
- the laser beam emitted from the reflecting surface 106 is deflected by changing the angle of the reflecting surface 106 on which the laser beam is incident, that is, the scanning angle ⁇ . Scanning is performed along one scanning line.
- the polygon mirror 104 of the laser beams emitted from the reflection surface 106, only those having a scan angle ⁇ within a set range (for example, 40 degrees to 50 degrees) are used.
- FIG. 7 is a graph showing the property that the reflectance of the reflection surface 106 depends on the scanning angle ⁇ ⁇ ⁇ ⁇ in the use area. This scan angle dependency causes the relationship between the light intensity command value and the actual light intensity value to become non-linear. On the other hand, the scanning angle ⁇ corresponding to each pixel dot can be determined if the position of the pixel irradiated by the laser beam at that time on the horizontal scanning line is known.
- each laser beam is sequentially irradiated.
- the R signal, the G signal, and the B signal are respectively corrected according to the position of the pixel.
- the scanning angle dependency of the reflectance is considered to be common, and the forces are not common. That is, even if the scanning angle ⁇ ⁇ is the same, if the position of one of the plurality of reflecting surfaces 106 used is different, the reflectance may be different. In such a case, the position of the reflecting surface 106 that is actually reflecting the laser beam is specified based on, for example, the current scanning line number NL, and set according to the specified position. It is desirable to correct the original light intensity signal according to the corrected characteristics.
- the above-described vertical-scan reflectance correction is performed in accordance with the above-described horizontal-scan reflectance correction, and the vertical-scan reflectance correction table of the LUT 184 is used. Is performed by referring to. [0121]
- the case where the LUT 184 individually includes the light intensity correction table, the horizontal scanning reflectance correction table, and the vertical scanning reflectance correction table has been described above.
- the present invention is implemented in such a mode. It is not essential to do.
- one table that reflects all the characteristics of the three tables for example, the relationship between the original light intensity signal (original RZGZB signal), the pixel position, and the corrected light intensity signal (corrected RZGZB signal)
- the present invention can be implemented in a mode in which a table defining a relationship is provided in the internal memory of the LUT 184.
- the original depth data represented by the original Z signal supplied to the PC is taken in.
- the above-described depth correction is performed on the captured original depth data.
- FIG. 8 (a) shows an example of the input / output characteristics of the wavefront modulator 22, that is, an example of the relationship between the applied voltage to the wavefront modulator 22 and the depth actually realized by the wavefront modulator 22. Is represented in daraf. In this example, approximately the reciprocal of the applied voltage V is related to the actual depth value Z.
- the depth command value Z represented by the original Z signal that is, the applied voltage represented by the original Z signal
- the corrected depth data The linearity of the relationship with the actual depth value Z realized by the wavefront modulator 22 with the represented correction Z signal is increased as compared to the case where the correction is not performed.
- a correction light intensity signal (correction R signal, correction G signal, and correction B signal) representing each corrected light intensity data
- a correction representing the corrected depth data The Z signal is output to the three lasers 30, 32, and 34 and the wavefront modulator 22, respectively.
- the combination of the RSD and the signal processing device 39 constitutes an example of the “retinal scanning display” in the above item (1), 30, 32, and 34 cooperate with each other to form a combination of an example of the “emission section” and an example of the “modulation section” in the same section, and the scanning device 24 forms an example of the “scanning section” in the same section.
- the part of the LUT 184 for performing the light intensity correction and the depth correction constitutes an example of the “first correction device” in the same item or the item (2).
- the light intensity modulating units 160, 162, and 164 of the lasers 30, 32, and 34 work together to form an example of the “light intensity modulating unit” in the above section (3).
- the light sources ⁇ 150, 152, and 154 which together form one example of the “emission section” in the above item (4), 162 and 164 cooperate with each other to constitute an example of the “light intensity modulation section” in the same section
- the multiplexing optical system 60 constitutes an example of the “combining section” in the same section
- the scanning device 24 constitutes the “composition section” in the same section.
- the part for performing the light intensity correction of the LUT 184 forms an example of the “first correction part” in the same section.
- the scanning device 24 constitutes an example of the “scanning unit” in the item (5), and performs the horizontal scanning reflectance correction and the vertical scanning reflectance correction of the LUT 184.
- the wavefront modulator 22 constitutes an example of the “wavefront modulation unit” in the above item (6), and the portion of the LUT 184 for performing the depth correction is the same as the above item or the above. This constitutes an example of the “second correction unit” in the section (7).
- the combination of the RSD and the signal processing device 39 constitutes an example of the “retinal scanning display” in the above item (8)
- the light source section 150 of the lasers 30, 32, and 34 , 152 and 154 cooperate with each other to form an example of the “emission section” in the same paragraph
- light intensity modulation sections 160, 162 and 164 cooperate with each other to form an example of the “light intensity modulation section” in the same paragraph
- the wavefront modulator 22 forms an example of the “wavefront modulating section” in the same section
- the scanning device 24 forms an example of the “scanning section” in the same section.
- the part for performing the light intensity correction of the LUT 184 constitutes an example of the “first correction device” in the above item (8)
- the part for performing the vertical scan reflectance correction is described in the section “Second Correction Device”. This is because an example of the “correction device” and a portion for performing the depth correction constitute an example of the “third correction device” in the same section.
- the signal processing device 39 constitutes an example of the “signal processing device” according to any one of the above items (9) to (16), and the RSD is the same as in the above (9). However, it can be considered to constitute an example of the “retinal scanning display” in either of the above items (16). Also in this case, the correspondence between the respective components of the signal processing device 39 and the RSD and the respective components in any of the above (9) and (16) is considered according to the above case. It is possible.
- this embodiment differs from the first embodiment only in the elements related to the horizontal scanning system, and the other elements are common. Therefore, the common elements are cited using the same reference numerals or names. By doing so, detailed description will be omitted, and only different elements will be described in detail.
- FIG. 9 is an exploded perspective view showing a horizontal scanning system 1100 in the retinal scanning display according to the second embodiment.
- the horizontal scanning system 1100 includes an optical scanner 1104 of a torsional resonance type.
- the optical scanner 1104 has a main body 1110 mounted on a base 1112.
- the main body 1110 is formed by a thin film forming method using an elastic material such as silicon.
- the main body 1110 has a thin rectangular shape having a through hole 1114 through which light can pass.
- the main body 1110 includes a fixed frame 1116 on the outside, and a vibrating body 1124 having a reflection mirror 1122 having a reflection surface 1120 formed on the inside.
- the base 1112 includes a support portion 1130 on which the fixed frame 1116 is to be mounted in a state of being mounted on the main body portion 1110, and a concave portion 1132 facing the vibrating body 1124. It is comprised so that it may have.
- the concave portion 1132 is formed to have a shape that does not interfere with the base 1112 even when the vibrating body 1124 is displaced by vibration when the main body 1110 is mounted on the base 1112.
- the reflecting surface 1120 of the reflecting mirror section 1122 is swung about a rotation center line 1134 which is also a center line of symmetry thereof.
- the vibrating body 1124 further reflects A beam portion 1140 extends from the mirror portion 1122 on the same plane as the mirror portion 1122 and joins the reflection mirror portion 1122 to the fixed frame 1116.
- a pair of beams 1140, 1140 extend from opposite sides of the reflection mirror 1122 in opposite directions.
- Each beam portion 1140 includes one mirror-side leaf spring portion 1142, a pair of frame-side leaf spring portions 1144, 1144, and the mirror-side leaf spring portion 1142 and the pair of frame-side leaf spring portions 1144, 1144. It is configured to include a connection 1146 to connect to!
- the mirror-side leaf spring portion 1142 has a rotation center on the rotation center line 1134 from the pair of edges facing each other in the direction of the rotation center line 1134 to the corresponding connection portion 1146 in the reflection mirror portion 1122. It extends along line 1134.
- the pair of frame-side leaf spring portions 1144 extend along the rotation center line 1134 from the corresponding connection portion 1146 in a posture offset from the rotation center line 1134 in the opposite direction.
- each beam portion 1140 as shown in Fig. 9, the pair of frame-side leaf spring portions 1144, 1144 are respectively mounted on the fixed frame 1116 in a posture extending over the horse frame motion sources 1150, 1152, 1154, 1156.
- the horse source 1150, 1152, 1154, and 1156 each have a piezoelectric body 1160 (also referred to as a “piezoelectric vibrator” or a “piezoelectric element”). )).
- the piezoelectric body 1160 is attached to one surface of the vibrating body 1124 in a thin plate shape, and is sandwiched between the upper electrode 1162 and the lower electrode 1164 in a direction perpendicular to the attachment surface.
- the upper electrode 1162 and the lower electrode 1164 are respectively connected to a pair of input terminals 1168, 1168 provided on the fixed frame 1116 by respective lead wires 1166.
- Fig. 11 As clearly apparent, the four even frame tsukudani]
- a pair of drive sources 1150 and 1152 located on one side and interposing the reflection mirror unit 1122 with respect to 134, and a pair of drive sources 1154 and 1156 located on the other side and interposing the reflection mirror unit 1122 are each paired.
- the free ends of the two piezoelectric bodies 1160, 1160 belong, are bent so as to be displaced in the same direction.
- a pair of drive sources 1150 and 1154 located on one side of the reflection mirror section 1122 and sandwiching the rotation center line 1134, and a pair of drive sources 1152 and the other side located on the other side and sandwiching the rotation center line 1134 1156 is bent so that the free ends of the two piezoelectric bodies 1160, 1160 belonging to each pair are displaced in directions opposite to each other.
- a pair of drive sources 1150 and a pair of drive sources 1150 located on one side with respect to the rotational center line 1134 are displaced to rotate the reflecting mirror 1122 in the same direction as shown in FIG. It is generated by both the displacement in one direction of 1152 and the displacement in the opposite direction of a pair of driving sources 1154 and 1156 located on the opposite side.
- each frame-side leaf spring portion 1144 has a function of converting a linear displacement (lateral displacement) of the piezoelectric body 1160 attached thereto into a bending motion (longitudinal displacement). It has a function of converting the bending motion of each frame-side leaf spring portion 1144 into the rotation motion of the mirror-side leaf spring portion 1142.
- the reflecting mirror part 1122 is rotated by the rotational movement of the mirror side leaf spring part 1142.
- the two driving sources 1150 and 1152 forming the first pair and the two driving sources 1154 and 1156 forming the second pair are displaced in directions opposite to each other, and the reflection mirror section is formed.
- the alternating voltage is applied to the first pair of two drive sources 1150 and 1152 in the same phase.
- the alternating voltage having the opposite phase is applied to the second pair of two driving sources 1154 and 1156 in the same phase.
- the first pair of drive sources 1150, 1152 In the case where each of the two drive sources 1154 and 1156 forming the second pair is bent downward in FIG. 9, all of the drive sources 1154 and 1156 are bent upward in FIG.
- FIG. 12 shows how a laser beam (incident light) incident on reflecting surface 1120 is reflected and emitted by reflecting surface 1120, and the reflected laser beam (reflected light) is scanned at a scan angle. The state of being deflected with ⁇ ⁇ is also shown.
- FIG. 13 (a) is a graph showing how the scanning angle ⁇ ⁇ changes with time t.
- the torsional resonance optical scanner 1104 only the approximate linear part of the graph is used for scanning the laser beam, not the entire range of the scan angle ⁇ is used for scanning the laser beam. Is set to the used area. This use area is set so that the running angle ⁇ ⁇ changes as linearly as possible with respect to time t.
- FIG. 13B is a graph showing how the scanning angular velocity ⁇ , which is the changing velocity of the scanning angle ⁇ ⁇ , changes with time t.
- the scanning angular velocity ⁇ changes with time t.
- the use area shown in FIG. 13 (a) is set so that the temporal change amount of the scanning angular velocity ⁇ is reduced, but the scanning angular velocity ⁇ still tends to change with time t.
- the absolute value of the scanning angular velocity ⁇ is large in the center of the used area and is almost constant with the progress of the time t, while the absolute value of the scanning angular velocity ⁇ is Value S is small and decreases greatly as time t progresses.
- the observer may not be able to change the light intensity of the laser beam emitted from the optical scanner 1104 by time, rather than by the instantaneous magnitude of the light, due to the photosensitivity of the photoreceptor cells present in the retina 14. There is a tendency to recognize by the magnitude of the integral value.
- the scanning angular velocity ⁇ changes with time t
- the light intensity (time integrated value) recognized by the observer is constant even if each instantaneous value of the light intensity of the laser beam is constant. It becomes smaller as the absolute value of the angular velocity ⁇ becomes larger. Therefore, even if the instantaneous light intensity of the laser beam irradiated on the retina 14 is constant, the observer observes that the speed of the laser beam passing through each point on the retina 14 becomes faster. It is recognized that the light intensity is low.
- the horizontal scanning reflection is performed on the optical scanner 1104. Rate correction is performed.
- the original light intensity data is changed by the apparent reflectance shown in FIG. 14 by referring to the horizontal scanning reflectance correction table of the LUT 184. Is corrected so as to cancel out.
- the scanning device 24 including the horizontal scanning system 1100 and the vertical scanning system 102 is different from that of the above (1) to (16).
- An example of the “scanning unit” is configured, and the part of the LUT 184 for performing the horizontal scanning reflectance correction is the “second scanning unit” in the above (5), (8), (13) or (16). It constitutes an example of the “correction device”.
- the expression “increases linearity” is used. This is because, when the linearity before the correction of the optical modulation signal and the linearity after the correction are compared with each other, the linearity after the correction is larger than the linearity before the correction, in other words, after the correction. This means that the relationship between the actual value of the optical feature and the command value in, approaches the linear relationship from the relationship between the actual value of the optical feature and the command value before correction.
- the "linearity" can be quantitatively expressed by a parameter representing the degree to which the relationship between the actual value of the optical feature and the command value matches the relationship of a straight line.
- the parameters are, for example, a straight-line graph (for example, a graph representing a least-squares regression line) that most closely resembles a graph that represents the relationship between the actual value of the optical feature and the command value.
- the sum of the deviations (eg, the sum of squares) of the graph representing the relationship between the actual value of the optical feature and the command value from the obtained linear graph can be defined. The closer this parameter is to 0, the closer the graph showing the relationship between the actual value of the optical feature and the command value to a straight line graph, and the higher the linearity of the relationship between the actual value of the optical feature and the command value. Represent.
- the expression "linearity increases” does not necessarily mean that the graph representing the relationship between the actual value of the optical feature and the command value is a straight line graph. It does not necessarily mean that they match exactly, and may be a graph that is skewed relative to a linear graph.
- the LUT 184 be set in accordance with the individual operating characteristics of each RSD in consideration of the fact that individual differences exist between a plurality of RSDs.
- a plurality of scanning units for example, polygon mirrors
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05721101A EP1729163A4 (en) | 2004-03-24 | 2005-03-18 | RETINAL SCAN DISPLAY AND SIGNAL PROCESSOR |
US11/523,579 US20070013688A1 (en) | 2004-03-24 | 2006-09-20 | Retinal scanning display and signal processing apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-086615 | 2004-03-24 | ||
JP2004086615A JP4590894B2 (ja) | 2004-03-24 | 2004-03-24 | 網膜走査型ディスプレイおよび信号処理装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/523,579 Continuation US20070013688A1 (en) | 2004-03-24 | 2006-09-20 | Retinal scanning display and signal processing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005091048A1 true WO2005091048A1 (ja) | 2005-09-29 |
Family
ID=34993853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/004914 WO2005091048A1 (ja) | 2004-03-24 | 2005-03-18 | 網膜走査型ディスプレイおよび信号処理装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070013688A1 (ja) |
EP (1) | EP1729163A4 (ja) |
JP (1) | JP4590894B2 (ja) |
WO (1) | WO2005091048A1 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4582179B2 (ja) * | 2008-03-31 | 2010-11-17 | ブラザー工業株式会社 | 画像表示装置 |
JP4720844B2 (ja) * | 2008-03-31 | 2011-07-13 | ブラザー工業株式会社 | 画像表示装置 |
KR20110116325A (ko) * | 2010-04-19 | 2011-10-26 | 삼성전자주식회사 | 영상 처리 장치 및 그 방법 |
US20130069874A1 (en) * | 2011-09-19 | 2013-03-21 | Bokam Engineering, Inc. | Game-style universal computer controller |
JP2014132295A (ja) * | 2013-01-07 | 2014-07-17 | Hitachi Media Electoronics Co Ltd | レーザービーム表示装置 |
JP6268747B2 (ja) * | 2013-05-13 | 2018-01-31 | 富士通株式会社 | 画像表示装置及び画像表示方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6050509A (ja) * | 1983-08-31 | 1985-03-20 | Hitachi Ltd | 光ビ−ム走査型画像入力装置 |
JPH11286137A (ja) * | 1998-04-02 | 1999-10-19 | Ricoh Co Ltd | レ−ザ書込み装置 |
JP2001272617A (ja) * | 2000-03-28 | 2001-10-05 | Noritsu Koki Co Ltd | レーザビーム走査ユニット及び写真処理装置 |
JP2003295108A (ja) * | 2002-01-30 | 2003-10-15 | Brother Ind Ltd | 画像表示装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0810306B2 (ja) * | 1990-01-26 | 1996-01-31 | 大日本スクリーン製造株式会社 | 光ビームの偏向制御方法 |
US5369423A (en) * | 1992-05-21 | 1994-11-29 | Xerox Corporation | Method and apparatus for the automatic calibration of an analog raster output scanner |
US6008781A (en) * | 1992-10-22 | 1999-12-28 | Board Of Regents Of The University Of Washington | Virtual retinal display |
US6661393B2 (en) * | 1999-08-05 | 2003-12-09 | Microvision, Inc. | Scanned display with variation compensation |
JP2001209342A (ja) * | 2000-01-24 | 2001-08-03 | Matsushita Electric Ind Co Ltd | 映像表示装置 |
US20030142086A1 (en) * | 2002-01-30 | 2003-07-31 | Mitsuyoshi Watanabe | Image projecting device |
-
2004
- 2004-03-24 JP JP2004086615A patent/JP4590894B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-18 WO PCT/JP2005/004914 patent/WO2005091048A1/ja not_active Application Discontinuation
- 2005-03-18 EP EP05721101A patent/EP1729163A4/en not_active Ceased
-
2006
- 2006-09-20 US US11/523,579 patent/US20070013688A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6050509A (ja) * | 1983-08-31 | 1985-03-20 | Hitachi Ltd | 光ビ−ム走査型画像入力装置 |
JPH11286137A (ja) * | 1998-04-02 | 1999-10-19 | Ricoh Co Ltd | レ−ザ書込み装置 |
JP2001272617A (ja) * | 2000-03-28 | 2001-10-05 | Noritsu Koki Co Ltd | レーザビーム走査ユニット及び写真処理装置 |
JP2003295108A (ja) * | 2002-01-30 | 2003-10-15 | Brother Ind Ltd | 画像表示装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1729163A4 * |
Also Published As
Publication number | Publication date |
---|---|
US20070013688A1 (en) | 2007-01-18 |
JP2005274866A (ja) | 2005-10-06 |
EP1729163A1 (en) | 2006-12-06 |
JP4590894B2 (ja) | 2010-12-01 |
EP1729163A4 (en) | 2007-03-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10896491B2 (en) | Device and method for projecting an image | |
JP4853033B2 (ja) | 光走査装置及び画像表示装置 | |
JP6409511B2 (ja) | ヘッドアップディスプレイ装置 | |
US6046720A (en) | Point source scanning apparatus and method | |
US7235778B2 (en) | Optical scanner reflecting and outputting light with controlled intensity and image forming apparatus using same | |
WO2005091048A1 (ja) | 網膜走査型ディスプレイおよび信号処理装置 | |
JP6118913B2 (ja) | 表示装置 | |
JP5083452B2 (ja) | 光走査装置、光走査装置の制御方法及び画像表示装置 | |
JP2006184663A (ja) | 光ビーム走査ディスプレイ | |
US20240295742A1 (en) | Mems device with elliptical mirror | |
JP5304839B2 (ja) | 光走査装置及び画像表示装置 | |
JP2020184014A (ja) | 光源装置、光走査装置、表示システムおよび移動体 | |
US7554715B2 (en) | Mirror driver using diametrically opposed mechanical beams with mirror inbetween and retinal scanning display using the same | |
JP4670451B2 (ja) | 光走査装置、光走査装置の制御方法及び画像表示装置 | |
JP2010266824A (ja) | 画像表示装置 | |
JP7338403B2 (ja) | 光偏向器、画像投影装置、ヘッドアップディスプレイ、レーザヘッドランプ、ヘッドマウントディスプレイ、物体認識装置、及び車両 | |
JP2005242035A (ja) | 画像投射装置、および画像投射装置の制御方法 | |
JP2007079087A (ja) | 画像表示装置及び画像表示装置の制御方法 | |
JP2015031821A (ja) | 光走査装置及び画像投影装置 | |
JP4835077B2 (ja) | 画像表示装置及び画像表示装置の制御方法 | |
JP2014085605A (ja) | レーザビーム表示装置並びにそのミラー制御方法 | |
CN116047763A (zh) | 光纤扫描显示探头、头戴式显示器及其驱动方法 | |
JP2021033202A (ja) | 光源装置、光走査装置、表示システム、移動体、光源装置の制御方法および波長推定方法 | |
JP2010107738A (ja) | 光走査装置及び画像形成装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 11523579 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005721101 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005721101 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11523579 Country of ref document: US |