WO2017013971A1 - 光学装置、画像表示装置及び表示装置 - Google Patents
光学装置、画像表示装置及び表示装置 Download PDFInfo
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- WO2017013971A1 WO2017013971A1 PCT/JP2016/067794 JP2016067794W WO2017013971A1 WO 2017013971 A1 WO2017013971 A1 WO 2017013971A1 JP 2016067794 W JP2016067794 W JP 2016067794W WO 2017013971 A1 WO2017013971 A1 WO 2017013971A1
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- substrate
- light
- optical device
- control device
- display device
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- 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
- G02B27/0172—Head mounted characterised by optical features
- G02B2027/0174—Head mounted characterised by optical features holographic
-
- 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
- G02B2027/0178—Eyeglass type
Definitions
- the present disclosure relates to an optical device and an image display device including the optical device. Furthermore, the present disclosure relates to a display device including such an image display device, and more specifically to a display device used for a head-mounted display (HMD, Head Mounted Display).
- HMD Head Mounted Display
- AR technology Augmented Reality
- a head-mounted display has been studied as a device for presenting visual information.
- work support in an actual environment is expected.
- provision of road guidance information, provision of technical information to engineers who perform maintenance, and the like can be mentioned.
- the head-mounted display is very convenient because the hand is not blocked.
- various information is obtained while moving outdoors, since various information including images or images and the external environment can be simultaneously captured in the field of view, smooth movement is possible.
- a virtual image display device (display device) using a deflection unit including a hologram diffraction grating in order to allow an observer to observe a two-dimensional image formed by an image forming apparatus as an enlarged virtual image by a virtual image optical system is disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-2007 -094175.
- the image display device 100 ′ basically includes an image forming device 111 that displays an image, a collimating optical system 112, and light displayed on the image forming device 111. And an optical device 120 that leads to the pupil 21 of the observer.
- the optical device 120 includes a light guide plate (first substrate) 121 and deflecting means provided on the light guide plate 121.
- the deflecting unit includes a first diffraction grating member 141 and a second diffraction grating member 142 made of a reflection type volume hologram diffraction grating film.
- the collimating optical system 112 receives light emitted from each pixel of the image forming apparatus 111, and the collimating optical system 112 generates a plurality of parallel lights incident on the light guide plate 121. Incident. Parallel light enters and exits from the second surface 121 ⁇ / b> B of the light guide plate 121.
- the first diffraction grating member 141 and the second diffraction grating member 142 are attached to the first surface 121A of the light guide plate 121 that is parallel to the second surface 121B of the light guide plate 121.
- reference numerals indicating other components in FIG. 31 refer to the image display apparatus of Example 1 described with reference to FIG. 1. Then, by forming a virtual image based on the image in the image display device 100 ′, the observer can superimpose the external image and the formed virtual image.
- the deflection means is often composed of a hologram diffraction grating film made of a photopolymer material.
- the deflecting means is made of a photopolymer material
- swelling or the like occurs in the deflecting means due to moisture absorption of the photopolymer material, and as a result, changes in the characteristics of the deflecting means, for example, the pitch of interference fringes, interference fringes
- a change occurs in the inclination angle (slant angle).
- a desired reproduction center wavelength (diffraction center wavelength) and its bandwidth vary from the design values.
- the influence of moisture on the optical characteristics of the deflecting means is so great that it cannot be ignored.
- a technique for storing the deflecting means in a space formed by the box and the transparent cover is known from, for example, Japanese Patent Application Laid-Open No. 2002-107658.
- an object of the present disclosure is to provide an optical device having a configuration and structure capable of sufficiently suppressing the influence of moisture on the optical characteristics of the deflecting unit, an image display device including the optical device, and the image display device. It is to provide a display device provided.
- a first substrate having a first surface and a second surface opposite the first surface;
- a second substrate having a first surface and a second surface facing the first surface, wherein the first surface is disposed opposite to the first surface of the first substrate;
- Deflection means disposed on the first surface of the first substrate;
- a sealing member for sealing the outer edge of the first surface of the first substrate and the outer edge of the first surface of the second substrate; and
- a hygroscopic member disposed in a space surrounded by the first substrate, the second substrate and the sealing member; It has.
- an image display device of the present disclosure (A) an image forming apparatus, and (B) an optical device that receives and emits light emitted from the image forming apparatus;
- An image display device comprising: The optical device includes the optical device of the present disclosure described above.
- a display device of the present disclosure is provided.
- a display device comprising: The image display device (A) an image forming apparatus, and (B) an optical device that receives and emits light emitted from the image forming apparatus;
- the optical device includes the optical device of the present disclosure described above.
- the optical device of the present disclosure the optical device constituting the image display device of the present disclosure, the optical device constituting the display device of the present disclosure (hereinafter, these optical devices are collectively referred to as “the optical device etc. of the present disclosure”).
- a hygroscopic member is disposed in a space surrounded by the first substrate, the second substrate, and the sealing member. Therefore, in the optical device and the like of the present disclosure, it is possible to sufficiently suppress the influence of moisture on the optical characteristics of the deflection unit. Note that the effects described in the present specification are merely examples and are not limited, and may have additional effects.
- FIG. 1 is a conceptual diagram of an image display device in the display device according to the first embodiment.
- 2A and 2B are conceptual diagrams of modifications of the optical device in the display device according to the first embodiment.
- 3A and 3B are conceptual diagrams of another modification of the optical device in the display device according to the first embodiment.
- FIG. 4 is a conceptual diagram of still another modification of the image display device in the display device of the first embodiment.
- FIG. 5 is a schematic view of the display device of Example 1 as viewed from above.
- 6A and 6B are a schematic view of the display device of Example 1 as viewed from the side, and a diagram schematically illustrating a light propagation state in the first substrate constituting the image display device, respectively.
- FIG. 1 is a conceptual diagram of an image display device in the display device according to the first embodiment.
- 2A and 2B are conceptual diagrams of modifications of the optical device in the display device according to the first embodiment.
- 3A and 3B are conceptual diagrams of another modification of the optical device in the
- FIG. 7 is a schematic cross-sectional view showing an enlarged part of a reflective volume hologram diffraction grating film in the display device of the first embodiment.
- FIG. 8 is a conceptual diagram of an image display device in the display device according to the second embodiment.
- FIG. 9 is a conceptual diagram of an image display device in the display device according to the third embodiment.
- FIG. 10 is a conceptual diagram of an image display device in the display device according to the fourth embodiment.
- FIG. 11 is a schematic view of the display device of Example 5 as viewed from the front.
- FIG. 12 is a schematic view of the display device of Example 5 as viewed from above.
- FIG. 13 is a conceptual diagram of an image display device in the display device according to the fifth embodiment.
- FIG. 14 is a schematic view of the display device of Example 6 as viewed from above.
- FIG. 15 is a conceptual diagram of a part of the optical device in the display device according to the sixth embodiment.
- FIG. 16 is a conceptual diagram of an image display device in the display device according to the seventh embodiment.
- FIG. 17 is a schematic view of the display device of Example 7 as viewed from above.
- FIG. 18 is a schematic view of the display device of Example 7 as viewed from the side.
- FIG. 19 is a conceptual diagram of a modification of the image display device in the display device of the seventh embodiment.
- FIG. 20 is a conceptual diagram of an image display device in the display device according to the eighth embodiment.
- FIG. 21 is a schematic view of the display device of Example 8 as viewed from above.
- FIG. 22A and 22B are a schematic view of the display device of Example 8 as viewed from the side, and a schematic view of the optical device and the light control device in the display device of Example 8 as viewed from the front.
- . 23A and 23B are a schematic cross-sectional view of a light control device and a schematic front view of the light control device in the display device of Example 8.
- FIG. FIG. 24 is a diagram illustrating the outside world viewed by an observer.
- FIG. 25A and FIG. 25B illustrate the dimming so that the light shielding rate of the virtual image projection area of the light control device including the projection image of the virtual image on the light control device is higher than the light shielding rate of other regions of the light control device. It is a figure which shows the state by which an apparatus is controlled.
- FIG. 26A, FIG. 26B, and FIG. 26C are diagrams schematically illustrating changes in a virtual image projection region of the light control device.
- FIG. 27 is a diagram schematically illustrating a virtual rectangle circumscribing a virtual image formed in the optical device and a rectangular shape of a virtual image projection region of the light control device.
- 28A and 28B are a schematic view of the display device of Example 9 as viewed from above, and a schematic diagram of a circuit that controls the environmental illuminance measurement sensor, respectively.
- FIGS. 29A and 29B are a schematic view of the display device of Example 10 as viewed from above, and a schematic diagram of a circuit that controls the transmitted light illuminance measurement sensor, respectively.
- FIG. 30 is a conceptual diagram of an image display device in the display device according to the thirteenth embodiment.
- FIG. 31 is a conceptual diagram of an image display device in a conventional display device.
- Example 1 (optical device, image display device, and display device of the present disclosure) 3.
- Example 2 (Modification of Example 1) 4).
- Example 3 (another modification of Example 1) 5.
- Example 4 (Modification of Example 3) 6).
- Example 5 (Modification of Examples 1 to 4) 7).
- Example 6 (another modification of Examples 1 to 4) 8).
- Example 7 (Modification of Examples 1 to 6) 9.
- Example 8 (Modification of Examples 1 to 7) 10.
- Example 9 (Modification of Example 8) 11.
- Example 10 (modification of Example 8 to Example 9) 12
- Example 11 (modification of Example 8 to Example 10) 13.
- Example 12 (Modification of Example 11) 14
- Example 13 (Modification of Examples 1 to 12) 15.
- the moisture absorbing member may be arranged on the first surface of the second substrate. In this case, the moisture absorbing member can be bonded to the entire first surface of the second substrate.
- the moisture absorbing member may be arranged in a region other than the region where the deflecting means of the first surface of the first substrate is arranged. That is, the moisture absorbing member may be arranged in a frame shape so as to surround the deflecting means. It is desirable that there is a gap of 1 ⁇ m or more between the hygroscopic member and the deflecting means.
- the moisture absorbing member is A region along the inside of the sealing member on the first surface of the second substrate, or A region along the inside of the sealing member on the first surface of the first substrate, or A region along the inside of the sealing member on the first surface of the second substrate, and a region along the inside of the sealing member on the first surface of the first substrate, It can be set as the form arrange
- the optical device or the like of the present disclosure may be configured such that a light shielding member is disposed outside the second surface of the second substrate so as to cover the deflection unit.
- the orthogonal projection image of the deflecting means to the second substrate can be included in the orthogonal projection image of the light shielding member to the second substrate. In these cases, the light shielding to the second substrate is performed.
- An area within an orthographic image of a member The region of the first surface of the second substrate, or An area other than the area where the deflecting means of the first surface of the first substrate is arranged, or A region other than the region of the first surface of the second substrate and the region where the deflecting means of the first surface of the first substrate is disposed; It can be set as the structure by which the moisture absorption member is arrange
- the deflecting unit may be configured of a material having water absorption. Specifically, it is preferable that the deflecting unit is composed of a hologram diffraction grating film made of a resin material.
- the surface of the deflecting means facing the second substrate may be provided with a protective film, and the moisture absorbing member and the protective film may be made of the same material. Further, in this case, the thickness t 1 of the hygroscopic member can be thicker than the thickness t 2 of the protective film.
- t 2 ⁇ 10 ⁇ m t 2 ⁇ t 1 ⁇ 1mm Preferably, 1 ⁇ 10 ⁇ 7 m ⁇ t 1 ⁇ 3 ⁇ 10 ⁇ 4 m More preferably, 1 ⁇ 10 ⁇ 6 m ⁇ t 1 ⁇ 1 ⁇ 10 ⁇ 4 m More preferably, 1 ⁇ 10 ⁇ 6 m ⁇ t 1 ⁇ 1 ⁇ 10 ⁇ 5 m Is preferably satisfied.
- a protective film it is possible to prevent the deflection means from being damaged.
- the deflection means is composed of a first deflection means and a second deflection means
- the first deflecting means deflects the light incident on the first substrate so that the light incident on the first substrate is totally reflected inside the first substrate
- the second deflecting unit may be configured to deflect the light propagated in the first substrate by total reflection in order to emit the light propagated in the first substrate by total reflection from the first substrate.
- the first substrate functions as a light guide plate. That is, light incident from the image forming apparatus propagates through the first substrate (light guide plate) by total reflection, and then is emitted toward the observer. Further, a virtual image forming region of the optical device is configured by the second deflecting unit.
- total reflection means total internal reflection or total reflection inside the first substrate (light guide plate).
- the moisture absorbing member may be arranged on the first surface of the second substrate. In this case, the moisture absorbing member can be bonded to the entire first surface of the second substrate.
- the moisture absorbing member is disposed in a region other than the region where the first deflection unit and the second deflection unit are disposed on the first surface of the first substrate. It can be. Furthermore, it is preferable that the moisture absorbing member is disposed in a region other than the region of the first substrate (the light guiding region of the first substrate) where light is guided from the first deflecting unit to the second deflecting unit. That is, the hygroscopic member may be arranged in a frame shape so as to surround the first deflection unit, the second deflection unit, and the light guide region of the first substrate. It is desirable that there is a gap of 1 ⁇ m or more between the hygroscopic member and the deflecting means.
- the moisture absorbing member is A region along the inside of the sealing member on the first surface of the second substrate, or A region along the inside of the sealing member on the first surface of the first substrate, or A region along the inside of the sealing member on the first surface of the second substrate, and a region along the inside of the sealing member on the first surface of the first substrate, It can be set as the form arrange
- the optical device-A of the present disclosure may be configured such that a light shielding member is disposed outside the second surface of the second substrate so as to cover the first deflection unit.
- the orthogonal projection image of the first deflecting unit on the second substrate can be included in the orthogonal projection image of the light shielding member on the second substrate.
- a light shielding member that shields external light from entering the optical device is disposed in a region of the optical device where the light emitted from the image forming device is incident.
- An optical device that receives light emitted from the image forming apparatus by disposing a light-shielding member that blocks external light from entering the optical device in a region of the optical device that receives light emitted from the image forming apparatus. Since external light does not enter the area of the apparatus, undesired stray light or the like is not generated, and image display quality in the display apparatus is not deteriorated.
- the orthogonal projection image onto the optical device of the light shielding member includes a region of the optical device into which the light emitted from the image forming device is incident.
- the light shielding member may be arranged on the side opposite to the side on which the image forming apparatus of the optical apparatus is arranged, separated from the optical apparatus.
- the light shielding member may be made of, for example, an opaque plastic material.
- Such a light shielding member extends integrally from the housing of the image display device, or is attached to the housing of the image display device, or extends integrally from the frame, or is attached to the frame. It can be set as a form.
- the light shielding member may be attached to the optical device, or may be attached to or disposed on the portion of the optical device opposite to the side on which the image forming apparatus is disposed.
- the light shielding member can also be set as the structure distribute
- the light shielding member made of an opaque material may be formed on the surface of the optical device based on, for example, physical vapor deposition (PVD) or chemical vapor deposition (CVD), or printing.
- PVD physical vapor deposition
- CVD chemical vapor deposition
- a film, a sheet, or a foil made of an opaque material (plastic material, metal material, alloy material, etc.) may be bonded together.
- the orthogonal projection image onto the optical device of the light shielding member includes an orthogonal projection image onto the optical device at the end of the light control device, which will be described later.
- At least one of the first deflecting unit and the second deflecting unit may be configured of a material having water absorption. it can.
- the first deflecting unit is composed of a hologram diffraction grating film made of a resin material
- the second deflecting unit is composed of a hologram diffraction grating film made of a resin material.
- a moisture absorption member, a protective film, Can be made of the same material, and in this case, the thickness t 1 of the hygroscopic member can be made thicker than the thickness t 2 of the protective film.
- t 2 ⁇ 10 ⁇ m t 2 ⁇ t 1 ⁇ 1mm Preferably, 1 ⁇ 10 ⁇ 7 m ⁇ t 1 ⁇ 3 ⁇ 10 ⁇ 4 m More preferably, 1 ⁇ 10 ⁇ 6 m ⁇ t 1 ⁇ 1 ⁇ 10 ⁇ 4 m More preferably, 1 ⁇ 10 ⁇ 6 m ⁇ t 1 ⁇ 1 ⁇ 10 ⁇ 5 m Is preferably satisfied.
- a protective film it is possible to prevent the deflection means from being damaged.
- the first deflecting means is composed of a hologram diffraction grating film
- the first deflecting means diffracts and reflects the light incident on the first substrate (light guide plate), and the second deflecting means is inside the first substrate.
- the light propagated by total reflection is diffracted and reflected several times.
- the hologram diffraction grating film can be constituted of a reflection type hologram diffraction grating film, or can be constituted of a transmission type hologram diffraction grating film, or alternatively, one of the hologram diffraction grating films can be constituted.
- the grating film can be made of a reflection type hologram diffraction grating film, and the other hologram diffraction grating film can be made of a transmission type hologram diffraction grating film.
- An example of the reflection type hologram diffraction grating film is a reflection type volume hologram diffraction grating film.
- the first deflecting means composed of the reflective volume hologram diffraction grating film is referred to as a “first diffraction grating member” for convenience
- the second deflecting means composed of the reflective volume hologram diffraction grating film is referred to as “second diffraction for convenience. It may be called “lattice member”.
- the first deflection unit when the first deflection unit reflects all of the light incident on the first substrate (light guide plate), the first deflection unit is made of, for example, a metal containing an alloy and is incident on the first substrate. It can be comprised from the light reflection film (a kind of mirror) which reflects light. Further, when the first deflecting unit reflects a part of the light incident on the first substrate, the first deflecting unit includes, for example, a multilayer laminated structure in which a large number of dielectric laminated films are laminated, a half mirror, and a polarized beam. A splitter and a diffraction grating (for example, a hologram diffraction grating film) can be used.
- a diffraction grating for example, a hologram diffraction grating film
- the second deflecting means the parallel light propagated through the first substrate by total reflection is reflected or diffracted multiple times and emitted from the first substrate in the state of parallel light.
- the second deflecting means can be composed of a multilayer laminated structure in which a large number of dielectric laminated films are laminated, a half mirror, a polarization beam splitter, and a hologram diffraction grating film.
- at least one of the first deflecting unit and the second deflecting unit is made of a material having water absorption.
- one of the first deflecting means and the second deflecting means may be disposed inside the first substrate.
- the water absorption rate of the moisture absorbing member is higher than the water absorption rate of the material constituting the deflecting unit. It can be in the form. However, the present invention is not limited to this.
- the water absorption rate can be measured, for example, based on JIS K 7209: 2000 “Plastics—How to determine water absorption rate”.
- the hygroscopic member can be made of polyvinyl alcohol (PVA). PVA is a preferred material that has no transparency of the residual organic solvent, has little damage to the photopolymer material described later, and has high transparency.
- the hygroscopic member may be made of at least one material selected from the group consisting of nanoporous silica, molecular sieve, zeolite, activated carbon, activated alumina, diatomaceous earth, montmorillonite and bentonite, but is hygroscopic.
- the physical hygroscopic agent has, for example, a honeycomb structure in which nano-sized (usually 0.1 nm to 10 nm) fine pores exist, and these pores trap water molecules and exhibit a hygroscopic action.
- the diameter of the pores can be appropriately adjusted by, for example, changing the molecular structure of the surfactant as a template, and as a result, the hygroscopicity can also be appropriately adjusted.
- Particularly preferred physical hygroscopic agents include nanoporous silica, molecular sieves and zeolites.
- the hygroscopic member can be made of a resin film having a light transmittance of 50% or more.
- polyolefin resins such as homopolymers or copolymers such as ethylene, polypropylene, butene, cyclopentadiene and derivatives thereof, dicyclopentadiene and derivatives thereof, Amorphous polyolefin resins (COP) such as cyclic polyolefins such as norbornadiene and derivatives thereof, or copolymer resins (COC), polyester resins such as polyethylene terephthalate (PET) and polyethylene 2,6-naphthalate (PEN), nylon 6, Polyamide resins such as nylon 12, copolymer nylon, ethylene / vinyl alcohol copolymer resin (EVOH), polyimide resin (PI), polyetherimide resin (PEI), polysulfone resin (PS), polyethersulfone resin (PES) ) Polyetheretherketone resin (PEEK), polycarbonate resin (PC), polyvinyl butyrate resin (PVB), polyarylate resin (PAR), polyolefin resins (PO) such as homopoly
- the first substrate and the second substrate may be formed of a transparent substrate.
- the first substrate has two parallel surfaces (a first surface and a second surface) extending in parallel with the axis of the first substrate (longitudinal direction, horizontal direction and corresponding to the X-axis direction). ing.
- the width direction (height direction, vertical direction) of the first substrate corresponds to the Y-axis direction.
- the interference fringes of the hologram diffraction grating film extend substantially parallel to the Y-axis direction.
- optical glass such as quartz glass and BK7, glass containing soda lime glass, white plate glass, and plastic material (for example, polycarbonate resin, laminated structure of polycarbonate resin and acrylic resin) , Cycloolefin polymer, amorphous polypropylene resin, and styrene resin including AS resin).
- the shape of the first substrate and the second substrate is not limited to a flat plate, and may have a curved shape.
- the light control device is disposed on the second surface side of the second substrate, and can do.
- the light control device is, for example, A first substrate for a light control device; A second substrate for light control device opposite to the first substrate for light control device; A first transparent electrode provided on the facing surface of the first substrate for light control device facing the second substrate for light control device; A second transparent electrode provided on the facing surface of the second substrate for light control device facing the first substrate for light control device, and A light control layer sandwiched between the first transparent electrode and the second transparent electrode, It can be set as the form which consists of.
- the first transparent electrode is composed of a plurality of strip-shaped first transparent electrode segments extending in the first direction
- the second transparent electrode is composed of a plurality of strip-shaped second transparent electrode segments extending in a second direction different from the first direction
- the control of the light shielding rate of the portion of the light control device corresponding to the overlapping region of the first transparent electrode segment and the second transparent electrode segment (the minimum unit region in which the light shielding rate of the light control device changes) It can be set as the form performed based on control of the voltage applied to 2 transparent electrode segments. That is, the light shielding rate can be controlled based on the simple matrix method.
- a form in which the first direction and the second direction are orthogonal to each other can be exemplified.
- a thin film transistor may be provided in each minimum unit region in order to control the light shielding rate of the minimum unit region where the light shielding rate of the light control device changes. That is, the light shielding rate may be controlled based on the active matrix method.
- at least one of the first transparent electrode and the second transparent electrode can be a so-called solid electrode (unpatterned electrode).
- the second substrate can be configured to also serve as the first substrate for the light control device, and by adopting such a configuration, the weight of the entire display device can be reduced, and the user of the display device can be reduced. There is no risk of discomfort.
- the second substrate for the light control device can be configured to be thinner than the first substrate for the light control device.
- the size and position of an actual light control region of the light control device are determined based on a signal for displaying an image in the image forming device.
- the size of the light control device may be the same size as the optical device, may be large, or may be small.
- the second deflecting means may be located in the orthogonal projection image of the light control device.
- the maximum light transmittance of the light control device can be 50% or more, and the minimum light transmittance of the light control device can be 30% or less.
- the upper limit value of the maximum light transmittance of the light control device can be 99%, and the lower limit value of the minimum light transmittance of the light control device can be 1%.
- the light passing through the light control device can be configured to be colored in a desired color by the light control device.
- the color colored by the light control device can be variable, or the color colored by the light control device can be fixed.
- a light control device colored in red, a light control device colored in green, and a light control device colored in blue may be stacked.
- the color to be colored by the light control device is not limited, but can be exemplified by brown.
- the light control device can be detachably disposed.
- the light control device is attached to, for example, a frame using a screw made of transparent plastic, or a groove is cut in the frame, and The light control device can be attached to the frame by engaging the light control device or by attaching a magnet to the frame, or a slide portion may be provided on the frame, and the light control device may be fitted into the slide portion.
- a connector is attached to the light control device, and this connector is included in a control circuit (for example, included in a control device for controlling the image forming apparatus) for controlling the light shielding rate (light transmittance) of the light control device.
- the light control device may be electrically connected through the wiring.
- the light control device may be curved.
- the display device of the present disclosure including the light control device further includes an environmental illumination measurement sensor that measures the illumination of the environment in which the display device is placed, and blocks the light of the light adjustment device based on the measurement result of the environment illumination measurement sensor. The rate can be controlled.
- it further includes an environmental illuminance measurement sensor that measures the illuminance of the environment where the display device is placed, and controls the luminance of the image formed by the image forming apparatus based on the measurement result of the environmental illuminance measurement sensor. can do.
- the display device of the present disclosure including a light control device further includes a transmitted light illuminance measurement sensor that measures illuminance based on light transmitted through the light control device from the external environment, and the measurement result of the transmitted light illuminance measurement sensor Based on this, the light shielding rate of the light control device can be controlled.
- it further includes a transmitted light illuminance measurement sensor that measures the illuminance based on the light transmitted through the light control device from the external environment. Based on the measurement result of the transmitted light illuminance measurement sensor, the brightness of the image formed by the image forming apparatus is adjusted. It can be set as the form to control. It is desirable that the transmitted light illuminance measurement sensor is arranged on the observer side with respect to the optical device.
- At least two transmitted light illuminance measurement sensors may be arranged to measure the illuminance based on the light that has passed through the portion with the high light blocking ratio and measure the illuminance based on the light that has passed through the portion with the low light blocking ratio. These forms may be combined. Furthermore, you may combine these forms and the form which controls based on the measurement result of said environmental illumination intensity measurement sensor.
- the environmental illuminance measurement sensor and the transmitted light illuminance measurement sensor may be configured by a known illuminance sensor, and the environmental illuminance measurement sensor and the transmitted light illuminance measurement sensor may be controlled based on a known control circuit.
- the optical device is a transflective type (see-through type). Specifically, at least the portion of the optical device facing the observer's eyeball (pupil) is made semi-transmissive (see-through), and if this portion of the optical device (and the dimmer is arranged, The outside scene can be seen through the light control device.
- the display device of the present disclosure may include one image display device (one eye type) or two (binocular type). When the light control device is arranged, in the case of the binocular type, the light transmittance of a part of the light control device is changed in both image display devices based on the signal for displaying the image. Alternatively, the light transmittance of a partial region of the light control device may be changed in one image display device.
- the term “semi-transmissive” may be used, but it does not mean that half (50%) of incident light is transmitted or reflected, but a part of incident light. Is used to transmit the light and reflect the remainder.
- Sealing members also called sealants, include thermosetting, photocuring, moisture, such as epoxy resins, urethane resins, acrylic resins, vinyl acetate resins, ene-thiol resins, silicone resins, and modified polymer resins.
- Various resins such as a curable type and an anaerobic curable type can be used.
- the image display device can display a single color (for example, green) image.
- the angle of view is divided into, for example, two parts (more specifically, for example, divided into two equal parts), and the first deflecting unit has two holograms corresponding to each of the two divided view angle groups.
- a structure in which diffraction grating films are stacked may be employed.
- the first deflecting means may be disposed on each of the first surface and the second surface of the first substrate.
- P 3 types of red, green, and blue
- a reflective volume hologram diffraction grating film that diffracts and reflects light having a red wavelength band (or wavelength) is disposed on the first light guide plate, and a green wavelength band
- a reflective volume hologram diffraction grating film that diffracts and reflects light having a wavelength is disposed, and a reflective volume hologram that diffracts and reflects light having a blue wavelength band (or wavelength) is disposed on the third light guide plate.
- a structure may be adopted in which a diffraction grating film is provided and the first light guide plate, the second light guide plate, and the third light guide plate are stacked with a gap therebetween.
- the first light guide plate or the third light guide plate corresponds to the first substrate.
- the angle of view is divided into three equal parts, and the first diffraction grating member or the second diffraction grating member can be configured by laminating hologram diffraction grating films corresponding to the respective angle of view.
- the constituent materials and basic structure of the first diffraction grating member and the second diffraction grating member made of the reflective volume hologram diffraction grating film are the same as those of the conventional reflective volume hologram diffraction grating film. That's fine.
- the reflection type volume hologram diffraction grating film means a hologram diffraction grating film that diffracts and reflects only + 1st order diffracted light. Interference fringes are formed on the diffraction grating member from the inside to the surface, and the method for forming the interference fringes itself may be the same as the conventional forming method.
- a member constituting the diffraction grating member is irradiated with object light from a first predetermined direction on one side to a member constituting the diffraction grating member (for example, photopolymer material), and at the same time Is irradiated with reference light from a second predetermined direction on the other side, and interference fringes formed by the object light and the reference light may be recorded inside the member constituting the diffraction grating member.
- the first predetermined direction, the second predetermined direction, the wavelength of the object light and the reference light, the desired pitch of the interference fringes on the surface of the diffraction grating member, the desired inclination angle of the interference fringes ( Slant angle) can be obtained.
- the inclination angle of the interference fringes means an angle formed between the surface of the diffraction grating member and the interference fringes.
- the first diffraction grating member and the second diffraction grating member are constituted by a laminated structure of a reflection type volume hologram diffraction grating film of P layer
- such a lamination of the hologram diffraction grating film is a hologram diffraction grating film of P layer.
- the hologram diffraction grating film of the P layer may be laminated (adhered) using, for example, an ultraviolet curable adhesive.
- a hologram diffraction grating film is produced by sequentially sticking a photopolymer material having adhesiveness thereon.
- a layered hologram diffraction grating film may be produced.
- the image forming apparatus may have a plurality of pixels arranged in a two-dimensional matrix. Note that such a configuration of the image forming apparatus is referred to as a “first image forming apparatus” for convenience.
- an image forming apparatus of the first configuration for example, an image forming apparatus configured from a reflective spatial light modulator and a light source; an image forming apparatus configured from a transmissive spatial light modulator and a light source; an organic EL (Electro-Luminescence), Examples of the image forming apparatus include a light emitting element such as an inorganic EL, a light emitting diode (LED), and a semiconductor laser element. Among them, the image forming apparatus includes a reflective spatial light modulator and a light source. Is preferred.
- the spatial light modulator examples include a light valve, for example, a transmissive or reflective liquid crystal display device such as LCOS (Liquid Crystal On On Silicon), a digital micromirror device (DMD), and a light emitting element as a light source. be able to.
- the reflective spatial light modulator reflects a part of light from the liquid crystal display device and the light source to the liquid crystal display device, and passes a part of the light reflected by the liquid crystal display device.
- a polarization beam splitter that leads to the optical system can be used.
- Examples of the light emitting element that constitutes the light source include a red light emitting element, a green light emitting element, a blue light emitting element, and a white light emitting element, or red light emitted from the red light emitting element, the green light emitting element, and the blue light emitting element.
- white light may be obtained by mixing green light and blue light with a light pipe and performing luminance uniformity.
- Examples of the light emitting element include a semiconductor laser element, a solid state laser, and an LED.
- the number of pixels may be determined based on specifications required for the image display device. As specific values of the number of pixels, 320 ⁇ 240, 432 ⁇ 240, 640 ⁇ 480, 854 ⁇ 480, 1024 ⁇ 768, 1920 * 1080 etc. can be illustrated.
- the image forming apparatus may include a light source and a scanning unit that scans the parallel light emitted from the light source. it can. Note that such a configuration of the image forming apparatus is referred to as a “second configuration image forming apparatus” for convenience.
- Examples of the light source in the image forming apparatus having the second configuration include a light emitting element, and specifically include a red light emitting element, a green light emitting element, a blue light emitting element, and a white light emitting element, or a red light emitting element.
- White light may be obtained by mixing red light, green light, and blue light emitted from the element, the green light emitting element, and the blue light emitting element by using a light pipe and performing luminance equalization.
- Examples of the light emitting element include a semiconductor laser element, a solid state laser, and an LED.
- the number of pixels (virtual pixels) in the image forming apparatus having the second configuration may be determined based on specifications required for the image display apparatus.
- the number of pixels 320 ⁇ 240, 432 ⁇ 240, 640 ⁇ 480, 854 ⁇ 480, 1024 ⁇ 768, 1920 ⁇ 1080 and the like can be exemplified.
- the scanning unit include a MEMS (Micro Electro Mechanical Systems) or a galvano mirror that performs micro scanning that can rotate in a two-dimensional direction.
- an optical system which is an optical system in which outgoing light is parallel light and may be referred to as “parallel light outgoing optical system”, specifically, For example, a plurality of lights that have been converted into parallel light by a collimating optical system or a relay optical system are incident on the first substrate (light guide plate). This is based on the fact that the light wavefront information when entering the first substrate needs to be preserved even after being emitted from the first substrate via the first deflecting means and the second deflecting means.
- the light emitting part of the image forming apparatus may be positioned at the position (position) of the focal length in the parallel light emitting optical system, for example.
- the parallel light emission optical system has a function of converting pixel position information into angle information in the optical system of the optical device.
- an optical system having a positive optical power as a whole which is a single lens or a combination of a convex lens, a concave lens, a free-form surface prism, and a hologram lens, can be exemplified.
- a light shielding portion having an opening may be arranged so that undesired light is emitted from the parallel light emitting optical system and does not enter the first substrate. .
- the frame includes two front parts disposed on the front of the observer, and two pivotally attached to both ends of the front part via hinges.
- a temple part is provided.
- a modern portion is attached to the tip of each temple portion.
- the front part may have a rim.
- the image display device is attached to the frame, specifically, for example, the image forming device may be attached to the temple portion.
- the front part and the two temple parts can be integrated. That is, when the entire display device of the present disclosure is viewed, the frame has substantially the same structure as normal glasses.
- the material constituting the frame including the pad portion can be made of the same material as that constituting normal glasses such as metal, alloy, plastic, and a combination thereof.
- the nose pad can be set as the structure by which the nose pad is attached to the front part. That is, when the entire display device of the present disclosure is viewed, the assembly of the frame (which may include a rim) and the nose pad has substantially the same structure as normal glasses.
- the nose pad can also have a known configuration and structure.
- the light control device can be arranged in the front portion.
- the optical device can be configured to be attached to the light control device.
- the optical device may be attached to the light control device in a close contact state, or may be attached to the light control device in a state where a gap is opened.
- the light control apparatus can be made into the form currently fitted by the rim.
- at least one of the first substrate for light control device and the second substrate for light control device may be attached to a frame, for example. However, it is not limited to these. From the observer side, the optical device and the light control device may be arranged in this order, or the light control device and the optical device may be arranged in this order.
- each image forming apparatus includes a headphone section, and the headphone section wiring from each image forming apparatus is routed from the tip of the modern section to the headphone section via the temple section and the interior of the modern section. It can also be made into the extended form.
- the headphone unit include an inner ear type headphone unit and a canal type headphone unit.
- the headphone part wiring preferably has a form extending from the tip part of the modern part to the headphone part so as to wrap around the back side of the auricle (ear shell). Moreover, it can also be set as the form by which the imaging device was attached to the center part of the front part, the edge part, and the temple part.
- the imaging device is configured by a solid-state imaging device and a lens made up of, for example, a CCD or a CMOS sensor.
- the wiring from the imaging device may be connected to, for example, one image display device (or image forming device) via the front portion, and is further included in the wiring extending from the image display device (or image forming device). That's fine.
- the display device of the present disclosure is a binocular type
- the first substrate (light guide plate) as a whole is disposed closer to the center of the observer's face than the image forming apparatus,
- the coupling member is attached to the observer-facing side of the central part of the frame located between the two pupils of the observer,
- the projection image of the coupling member may be included in the projection image of the frame.
- the structure in which the coupling member is attached to the central portion of the frame located between the two pupils of the observer, that is, the image display device is attached directly to the frame. Otherwise, when the observer wears the frame on the head, the temple portion is spread outward, and as a result, even if the frame is deformed, the deformation of the frame causes the image forming apparatus to Alternatively, the displacement (position change) of the first substrate does not occur or even if it occurs. Therefore, it is possible to reliably prevent the convergence angle of the left and right images from changing. In addition, since it is not necessary to increase the rigidity of the front portion of the frame, there is no increase in the weight of the frame, a decrease in design, and an increase in cost.
- the image display device since the image display device is not directly attached to the frame, it is possible to freely select the frame design and color according to the preference of the observer, and there are few restrictions on the frame design, High design freedom.
- the coupling member is disposed between the observer and the frame, and the projection image of the coupling member is included in the projection image of the frame. In other words, when the head-mounted display is viewed from the front of the observer, the coupling member is hidden by the frame. Therefore, high design and design can be given to the head-mounted display.
- the coupling member is configured to be attached to the side facing the observer of the central part of the front part (corresponding to the bridge part in normal glasses) located between the two pupils of the observer. Is preferred.
- the image forming apparatus can be attached to each end of the coupling member so that the mounting state can be adjusted.
- each image forming apparatus is located outside the observer's pupil.
- the distance between the center of the mounting portion of one image forming apparatus and one end of the frame (one end, one end) is ⁇ , and one end of the frame from the center of the coupling member
- the distance to (one wisdom) is ⁇
- the distance between the attachment center of the other image forming apparatus and one end of the frame is ⁇
- the length of the frame is L.
- the attachment of the image forming apparatus to each end portion of the coupling member is, for example, provided with three through holes at each end portion of the coupling member, and screwed portions corresponding to the through holes are provided in the image forming apparatus.
- the screw is inserted into each through hole and screwed into a screwing portion provided in the image forming apparatus.
- a spring is inserted between the screw and the screwing portion.
- the center of the attachment portion of the image forming apparatus is a projection image of the image forming apparatus obtained when the image forming apparatus and the frame are projected onto a virtual plane in a state where the image forming apparatus is attached to the coupling member.
- the center of the coupling member refers to a bisector along the axial direction of the frame where the coupling member is in contact with the frame when the coupling member is attached to the frame.
- the frame length is the length of the projected image of the frame when the frame is curved.
- the projection direction is a direction perpendicular to the face of the observer.
- the coupling member may be configured to couple the two first substrates.
- the two first substrates are integrally manufactured.
- the coupling member is attached to the integrally manufactured first substrate. Is included in a form in which two first substrates are coupled.
- the center of the image forming apparatus refers to a projection image of the image forming apparatus obtained when the image forming apparatus and the frame are projected onto a virtual plane in a state where the image forming apparatus is attached to the first substrate.
- the shape of the coupling member is essentially arbitrary as long as the projection image of the coupling member is included in the projection image of the frame, and examples thereof include a rod shape and an elongated plate shape.
- Examples of the material constituting the coupling member include metals, alloys, plastics, and combinations thereof.
- a signal for displaying an image in the image display device (a signal for forming a virtual image in the optical device) can be received from the outside.
- information and data relating to an image displayed on the image display device are recorded, stored and stored in a so-called cloud computer or server, for example, and the display device is a communication means such as a mobile phone or By providing a smartphone or by combining a display device and communication means, various information and data can be exchanged and exchanged between the cloud computer or server and the display device.
- a signal based on data that is, a signal for displaying an image on the image display device (a signal for forming a virtual image on the optical device) can be received.
- a signal for displaying an image in the image display device may be stored in the display device.
- the image displayed on the image display device includes various information and various data.
- the display device includes an imaging device, and transmits an image captured by the imaging device to a cloud computer or server via a communication unit, and various types corresponding to images captured by the imaging device at the cloud computer or server.
- Information and data may be searched, the searched various information and data may be sent to the display device via the communication means, and the searched various information and data may be displayed on the image display device.
- the image captured by the imaging device may be displayed on the image display device and confirmed on the optical device.
- the outer edge of the spatial region imaged by the imaging device can be displayed in a frame shape on the light control device.
- the light shielding rate of the region of the light control device corresponding to the spatial region imaged by the imaging device is set higher than the light shielding rate of the region of the light control device corresponding to the outside of the spatial region imaged by the imaging device. It can be. In such a form, the spatial region imaged by the imaging device appears darker to the observer than the outside of the spatial region imaged by the imaging device.
- the light shielding rate of the region of the light control device corresponding to the spatial region imaged by the imaging device is set lower than the light shielding rate of the region of the light control device corresponding to the outside of the spatial region imaged by the imaging device. It can also be. In such a form, for the observer, the spatial region imaged by the imaging device appears brighter than the outside of the spatial region imaged by the imaging device. Thus, the observer can easily and reliably recognize where the image pickup apparatus takes an image.
- the imaging device it is preferable to calibrate the position of the region of the light control device corresponding to the spatial region imaged by the imaging device.
- the display device includes a mobile phone or a smart phone, or by combining the display device with the mobile phone, the smart phone, or a personal computer, the imaging device in the mobile phone, the smart phone, or the personal computer.
- the spatial region imaged by can be displayed.
- the light shielding rate of the light control device Move / rotate the area of the light control device corresponding to the spatial area imaged by the imaging device using a control circuit (which can be substituted by a mobile phone, smart phone, or personal computer) for controlling the light transmittance Or by enlarging / reducing the difference between the space area displayed on the mobile phone, smartphone, or personal computer and the area of the light control device corresponding to the space area imaged by the imaging device.
- a control circuit which can be substituted by a mobile phone, smart phone, or personal computer
- the display device of the present disclosure including the various modifications described above includes, for example, reception / display of e-mails, display of various information on various sites on the Internet, and operation and operation of observation objects such as various devices.
- observation objects such as various devices.
- Various explanations about observation objects such as people and articles, symbols, codes, marks, marks, designs, etc.
- Display Display; Display of video and still images; Display of subtitles such as movies; Display of captions and closed captions related to video; Play, Kabuki, Noh, Kyogen, Opera, Music Festival, ballet, Various plays, It is used to display various explanations about observation objects in amusement parks (musement parks), art museums, sightseeing spots, resort areas, tourist information, etc., and explanations for explaining the contents, progress, background, etc. To kill, it can be used for the display of closed captioning. For play, kabuki, Noh, kyogen, opera, music festival, ballet, various theatres, amusement parks, museums, sightseeing spots, resorts, tourist information, etc. What is necessary is just to display the character as a related image on a display apparatus.
- the image control signal is sent to the display device, and the image is displayed on the display device.
- various devices and various descriptions related to observation objects such as people and articles are displayed.
- the imaging apparatus captures (images) the various objects, observation objects such as persons and articles, and the display device captures (images). By analyzing the contents, it is possible to display various descriptions related to observation objects such as various devices prepared in advance and people and articles on the display device.
- the image signal to the image forming apparatus includes not only the image signal (for example, character data) but also, for example, luminance data (luminance information) regarding the image to be displayed, chromaticity data (chromaticity information), or luminance.
- Data and chromaticity data can be included.
- the luminance data can be luminance data corresponding to the luminance of a predetermined region including the observation object viewed through the optical device
- the chromaticity data can be the luminance data of the predetermined region including the observation object viewed through the optical device.
- the chromaticity data corresponding to the chromaticity can be obtained.
- the luminance (brightness) of the displayed image can be controlled by including the luminance data related to the image, and the chromaticity ( Color) can be controlled, and luminance (brightness) and chromaticity (color) of a displayed image can be controlled by including luminance data and chromaticity data regarding the image.
- luminance data corresponding to the luminance of a predetermined area including the observation object viewed through the image display device the brightness of the image increases as the luminance value of the predetermined area including the observation object viewed through the image display device increases.
- the value of the luminance data may be set so that the value of is high (that is, the image is displayed brighter).
- the chromaticity data corresponding to the chromaticity of the predetermined area including the observation object viewed through the image display device is displayed, the chromaticity data of the predetermined area including the observation object viewed through the image display device is displayed.
- the value of the chromaticity data may be set so that the chromaticity of the power image is approximately complementary.
- Complementary color refers to a combination of colors that are located in opposite directions in a color circle. It is also a complementary color such as green for red, purple for yellow, and orange for blue.
- a color that mixes one color with another at an appropriate ratio, such as white for light and black for objects, may also be a color that causes desaturation, but the visual effect when paralleled Complementarity differs from complementarity when mixed.
- a head-mounted display can be configured by the display device of the present disclosure.
- This makes it possible to reduce the weight and size of the display device, significantly reduce discomfort when the display device is mounted, and further reduce the manufacturing cost.
- the display device of the present disclosure can be applied to a head-up display (HUD) provided in a cockpit of a vehicle or an aircraft.
- HUD head-up display
- a virtual image formation region in which a virtual image is formed based on light emitted from the image forming apparatus is emitted from a windshield such as a cockpit of a vehicle or an aircraft, or from the image forming apparatus.
- the virtual image forming region or the combiner is controlled by the light control device.
- the display device of the present disclosure can be used as a stereoscopic display device.
- a polarizing plate or a polarizing film may be detachably attached to the optical device, or a polarizing plate or a polarizing film may be attached to the optical device.
- Example 1 relates to an optical device of the present disclosure, specifically, an optical device-A of the present disclosure, and further relates to an image display device of the present disclosure and a display device of the present disclosure.
- FIG. 1 shows a conceptual diagram of the image display device of Example 1
- FIG. 5 shows a schematic view of the display device of Example 1 (specifically, a head-mounted display, HMD) viewed from above.
- a schematic view seen from the side is shown in FIG. 6A, and a light propagation state in the first substrate (light guide plate) constituting the image display apparatus is schematically shown in FIG. 6B.
- FIG. 7 shows a schematic cross-sectional view showing a part of the reflective volume hologram diffraction grating film in the display device of Example 1 in an enlarged manner.
- the display device of Example 1 or Examples 2 to 13 described later is a head-mounted display (HMD).
- HMD head-mounted display
- A a frame 10 (for example, a glasses-type frame 10) attached to the head of the observer 20, and
- the display device of Example 1 or Examples 2 to 13 described later is specifically a binocular type including two image display devices, it may be a single eye type including one.
- the image forming apparatuses 111 and 211 display a single color (for example, green) image (virtual image).
- the image display devices 100, 200, 300, 400, and 500 according to the first embodiment or the second to thirteenth embodiments described later are as follows.
- Optical systems parallel light emitting optical systems
- the image display devices 100, 200, 300, 400, and 500 may be fixedly attached to the frame 10 or may be detachably attached.
- the optical systems 112 and 254 are disposed between the image forming apparatuses 111 and 211 and the optical apparatuses 120, 320, 520, and 530. Then, the light beams converted into parallel light by the optical systems 112 and 254 are incident on and emitted from the optical devices 120, 320, 520, and 530.
- the optical devices 120, 320, 520, and 530 are transflective types (see-through types).
- At least a portion of the optical device that faces both eyes of the observer 20 is translucent (see-through).
- the optical devices 120 and 320 of Example 1 or Examples 2 to 13 described later are First substrates 121A, 321A having first surfaces 121A, 321A and second surfaces 121B, 321B facing the first surfaces 121A, 321A, The first surfaces 122A and 322A and the first surfaces 122A and 322A are opposed to the first surfaces 122A and 322A. The first surfaces 122A and 322A are opposed to the first surfaces 121A and 321A of the first substrates 121 and 321.
- a second substrate 122, 322 disposed as Deflection means 141, 142, 341, 342 disposed on the first surface of the first substrate 121, 321,
- a sealing member 124 for sealing the outer edges of the first surfaces 121A and 321A of the first substrates 121 and 321 and the outer edges of the first surfaces 122A and 322A of the second substrates 122 and 322;
- a hygroscopic member 130 disposed in a space surrounded by the first substrate 121 321, the second substrate 122 322, and the sealing member 124; It has.
- the first substrates 121 and 321 function as a light guide plate. That is, the light incident from the image forming apparatuses 111 and 211 propagates through the first substrates 121 and 321 (light guide plates) by total reflection and is emitted toward the observer.
- the first substrates 121 and 321 made of optical glass or plastic material have two parallel surfaces (the first surfaces 121A and 321A and the first surfaces 121A and 321A) that extend in parallel with the light propagation direction (X axis) due to total internal reflection of the first substrates 121 and 321. 2 surfaces 121B and 321B).
- the first surfaces 121A and 321A are opposed to the second surfaces 121B and 321B.
- the deflection means is composed of first deflection means 141, 341 and second deflection means 142, 342,
- the first deflecting units 141 and 341 deflect the light incident on the first substrates 121 and 321 so that the light incident on the first substrates 121 and 321 is totally reflected inside the first substrates 121 and 321.
- the second deflecting means 142 and 342 constitute a virtual image forming area of the optical devices 120 and 320.
- the display devices of Example 1 or Examples 2 to 4 described later are: (B-1) First substrates (light guide plates) 121, 321, which are emitted toward the viewer 20 after the light incident from the image forming apparatuses 111, 211 is propagated through the internal reflection, (B-2) The light incident on the first substrates 121 and 321 is deflected so that the light incident on the first substrates (light guide plates) 121 and 321 is totally reflected inside the first substrates 121 and 321.
- First deflecting means 141, 341, and (B-3) Propagating the inside of the first substrates 121 and 321 by total reflection in order to emit the light propagating inside the first substrates (light guide plates) 121 and 321 by total reflection from the first substrates 121 and 321.
- Second deflecting means 142, 342 for deflecting the reflected light multiple times An optical device 120, 320 comprising: The second deflection means 142 and 342 constitute a virtual image forming area of the optical device.
- optical device center point O passes through the optical device center point O, and is parallel to the axial direction of the optical devices 120 and 320.
- An axis that passes through the optical device center point O and coincides with the normal line of the optical devices 120 and 320 is defined as the Z axis.
- the center point of the first deflecting means 141, 341 is the optical device center point O. That is, as shown in FIG. 6B, in the image display apparatuses 100, 200, 300, and 400, the central incident light beam that has been emitted from the centers of the image forming apparatuses 111 and 211 and passed through the image forming apparatus side nodes of the optical systems 112 and 254. CL collides with the first substrates 121 and 321 perpendicularly. In other words, the central incident light beam CL is incident on the first substrates 121 and 321 at an incident angle of 0 degree. In this case, the center of the displayed image (virtual image) coincides with the perpendicular direction of the first surfaces 121A and 321A of the first substrates 121 and 321.
- the first deflecting unit 141 and the second deflecting unit 142 are disposed on (bonded to) the first surface 121A of the first substrate 121.
- the first deflecting unit 141 diffracts and reflects the parallel light incident on the first substrate 121 from the second surface 121 ⁇ / b> B so that the parallel light is totally reflected inside the first substrate 121.
- the second deflecting means 142 diffracts and reflects the light propagated through the first substrate 121 by total reflection a plurality of times, and emits the light from the first substrate 121 as the parallel light from the second surface 121B.
- each of the first deflecting unit 141 and the second deflecting unit 142 absorbs water. It has a material (photopolymer material). That is, each of the first deflecting unit 141 and the second deflecting unit 142 is specifically a single hologram diffraction grating film made of a resin material, more specifically, a single reflective volume hologram. It consists of a diffraction grating film.
- the first deflecting means 141 made of a reflective volume hologram diffraction grating film is referred to as a “first diffraction grating member 141” for convenience
- the second deflecting means 142 made of a reflective volume hologram diffraction grating film Is referred to as a “second diffraction grating member 142” for convenience.
- Each reflection type volume hologram diffraction grating film made of a photopolymer material is formed with interference fringes corresponding to one type of wavelength band (or wavelength), and is produced by a conventional method.
- the pitch of the interference fringes formed on the reflective volume hologram diffraction grating film is constant, and the interference fringes are linear and parallel to the Y axis.
- the axis line of the 1st diffraction grating member 141 and the 2nd diffraction grating member 142 is parallel to the X axis, and the normal line is parallel to the Z axis.
- FIG. 7 shows an enlarged schematic partial sectional view of a reflective volume hologram diffraction grating film.
- An interference fringe having an inclination angle (slant angle) ⁇ is formed on the reflective volume hologram diffraction grating film.
- the inclination angle ⁇ refers to an angle formed by the interference fringes and the surface of the reflective volume hologram diffraction grating film.
- the interference fringes are formed from the inside to the surface of the reflection type volume hologram diffraction grating film.
- the interference fringes satisfy the Bragg condition.
- the Bragg condition refers to a condition that satisfies the following formula (A).
- Equation (A) m is a positive integer, ⁇ is the wavelength, d is the pitch of the grating plane (the interval in the normal direction of the imaginary plane including the interference fringes), and ⁇ is the angle of incidence of the incident on the interference fringes To do.
- ⁇ the wavelength
- d the pitch of the grating plane (the interval in the normal direction of the imaginary plane including the interference fringes)
- ⁇ the angle of incidence of the incident on the interference fringes To do.
- Expression (B) the relationship among ⁇ , the tilt angle ⁇ , and the incident angle ⁇ is as shown in Expression (B).
- the parallel light is emitted after propagating through the interior by total reflection.
- the total number of reflections until reaching the second diffraction grating member 142 differs depending on the angle of view. More specifically, among the parallel light incident on the first substrate 121, the number of reflections of the parallel light incident at an angle in the direction approaching the second diffraction grating member 142 is the angle in the direction away from the second diffraction grating member 142. Is less than the number of reflections of parallel light incident on the first substrate 121.
- the angle formed by the normal line of the first substrate 121 when the light propagating through the first substrate 121 collides with the inner surface of the first substrate 121 is smaller than the parallel light incident on the first substrate 121 with an angle. Because it becomes.
- the shape of the interference fringes formed inside the second diffraction grating member 142 and the shape of the interference fringes formed inside the first diffraction grating member 141 are virtual planes perpendicular to the axis of the first substrate 121. Is symmetric with respect to.
- the image forming apparatus 111 is an image forming apparatus having a first configuration, and includes a plurality of pixels arranged in a two-dimensional matrix. Specifically, the image forming apparatus 111 includes a reflective spatial light modulator 150 and a light source 153 including a light emitting diode that emits white light. Each image forming apparatus 111 as a whole is housed in a housing 113 (indicated by a one-dot chain line in FIG. 1), and the housing 113 is provided with an opening (not shown). Then, light is emitted from an optical system (parallel light emitting optical system, collimating optical system) 112.
- an optical system parallel light emitting optical system, collimating optical system
- the reflective spatial light modulator 150 reflects part of the light from the liquid crystal display device (LCD) 151 composed of LCOS as a light valve and the light source 153 and leads it to the liquid crystal display device 151, and the liquid crystal
- the polarizing beam splitter 152 is configured to pass a part of the light reflected by the display device 151 and guide the light to the optical system 112.
- the liquid crystal display device 151 includes a plurality of (for example, 640 ⁇ 480) pixels (liquid crystal cells) arranged in a two-dimensional matrix.
- the polarization beam splitter 152 has a known configuration and structure. Unpolarized light emitted from the light source 153 collides with the polarization beam splitter 152.
- the P-polarized component passes and is emitted out of the system.
- the S-polarized component is reflected by the polarization beam splitter 152, enters the liquid crystal display device 151, is reflected inside the liquid crystal display device 151, and is emitted from the liquid crystal display device 151.
- the light emitted from the liquid crystal display device 151 the light emitted from the pixel displaying “white” contains a lot of P-polarized components, and the light emitted from the pixel displaying “black” is S-polarized light. Contains many ingredients.
- the P-polarized component passes through the polarization beam splitter 152 and is guided to the optical system 112.
- the S-polarized component is reflected by the polarization beam splitter 152 and returned to the light source 153.
- the optical system 112 is composed of, for example, a convex lens, and the image forming apparatus 111 (more specifically, the liquid crystal display device 151) is disposed at a focal position (position) in the optical system 112 in order to generate parallel light. Has been.
- the frame 10 includes a front portion 11 disposed in front of the observer 20, two temple portions 13 rotatably attached to both ends of the front portion 11 via hinges 12, and tip portions of the temple portions 13.
- a nose pad (not shown in FIG. 5) is attached. That is, the assembly of the frame 10 and the nose pad basically has substantially the same structure as normal glasses.
- casing 113 is attached to the temple part 13 by the attachment member 19 so that attachment or detachment is possible.
- the frame 10 is made of metal or plastic.
- Each housing 113 may be attached to the temple portion 13 by the attachment member 19 so that it cannot be attached to and detached from the temple portion 13.
- each housing 113 may be detachably attached to the temple portion 13 of the frame 10 of the glasses owned by the observer by the attachment member 19.
- Each housing 113 may be attached to the outside of the temple portion 13 or may be attached to the inside of the temple portion 13.
- the first substrates 121 and 321 may be fitted into the rim provided in the front portion 11.
- a wiring (a signal line, a power supply line, etc.) 15 extending from one image forming apparatus 111A extends from the distal end portion of the modern portion 14 to the outside via the temple portion 13 and the modern portion 14, and is controlled. It is connected to a device (control circuit, control means) 18.
- each of the image forming apparatuses 111A and 111B includes a headphone unit 16, and a headphone unit wiring 16 'extending from each of the image forming devices 111A and 111B is provided through the temple unit 13 and the modern unit 14. The head portion 16 extends from the tip of the modern portion 14.
- the headphone unit wiring 16 ′ extends from the tip of the modern unit 14 to the headphone unit 16 so as to wrap around the back side of the auricle (ear shell).
- the wiring (signal line, power supply line, etc.) 15 is connected to the control device (control circuit) 18 as described above.
- the control device 18 includes an image information storage device 18A. Then, the control device 18 performs processing for image display.
- the control device 18 and the image information storage device 18A can be composed of known circuits.
- An imaging device 17 composed of a solid-state imaging device composed of a CCD or CMOS sensor and a lens (these are not shown) is attached to a central portion 11 ′ of the front portion 11 by an appropriate attachment member (not shown). ing. A signal from the imaging device 17 is sent to a control device (control circuit) 18 via a wiring (not shown) extending from the imaging device 17.
- the moisture absorbing member 130 is disposed on the first surfaces 122A and 322A of the second substrates 122 and 322. Specifically, the moisture absorbing member 130 is bonded to the entire surface of the first surfaces 122A and 322A of the second substrates 122 and 322. Further, the water absorption rate of the moisture absorbing member 130 is higher than the water absorption rate of the material constituting the deflecting means 141, 142, 341, 342.
- the hygroscopic member 130 is made of film-like or sponge-like polyvinyl alcohol (PVA).
- the deflection means 141, 142, 341, 342 are made of a photopolymer material.
- the hygroscopic member 130 is at least one material selected from the group consisting of nanoporous silica, molecular sieve, zeolite, activated carbon, activated alumina, diatomaceous earth, montmorillonite, and bentonite, specifically nanoporous silica, for example. You can also.
- Such a solid moisture absorbing member may be fixed to the first surfaces 122A, 322A of the second substrates 122, 322 using, for example, an adhesive.
- the hygroscopic member 130 may be a resin film having a light transmittance of 50% or more, specifically, for example, PVA, and the first surfaces 122A and 322A of the second substrates 122 and 322 may have, for example, What is necessary is just to fix using an adhesive agent, and can also fix based on the transfer method.
- the first substrate 121, 321 and the second substrate 122, 322 are made of transparent substrates.
- the first substrates 121 and 321 are made of, for example, a cycloolefin polymer
- the second substrates 122 and 322 are made of, for example, a polycarbonate resin or a laminated structure of a polycarbonate resin and an acrylic resin.
- the sealing member 124 is made of, for example, an epoxy resin.
- the member 130 may be disposed in a region other than the region where the first deflecting units 141 and 341 and the second deflecting units 142 and 342 of the first surfaces 121A and 321A of the first substrates 121 and 321 are disposed.
- the first surfaces 121A and 321A of the first substrates 121 and 321 are arranged in a region along a part of the inside of the sealing member 124. Has been.
- the hygroscopic member 130 is configured to guide light from the first deflecting means 141 and 341 to the second deflecting means 142 and 342. It is arrange
- the hygroscopic member 130 is not disposed on the first surfaces 122A and 322A of the second substrates 122 and 322.
- the moisture absorbing member 130 is disposed on the first surfaces 122 ⁇ / b> A and 322 ⁇ / b> A of the second substrates 122 and 322.
- the moisture absorbing member 130 is A region along the inside of the sealing member 124 of the first surface 122A, 322A of the second substrate 122, 322, or A region along the inside of the sealing member 124 of the first surface 121A, 321A of the first substrate 121, 321, or The region along the inside of the sealing member 124 of the first surfaces 122A and 322A of the second substrates 122 and 322 and the inside of the sealing member 124 of the first surfaces 121A and 321A of the first substrates 121 and 321. region, It can also be arranged. Also in this case, it is desirable that a gap of 1 ⁇ m or more is left between the hygroscopic member 130 and the sealing member 124.
- a protective film 132 may be disposed on the surfaces of the first deflecting means 141 and 341 and the surfaces of the second deflecting means 142 and 342 facing the second substrates 122 and 322.
- the hygroscopic member 130 and the protective film 132 may be made of the same material, specifically, PVA.
- the thickness t 1 of the hygroscopic member 130 is preferably thicker than the thickness t 2 of the protective film 132.
- the optical device that constitutes the image display device, and the optical device that constitutes the display device the space in which the hygroscopic member is surrounded by the first substrate, the second substrate, and the sealing member. Therefore, the influence of moisture on the optical characteristics of the deflecting means can be sufficiently suppressed. That is, while reducing the weight of the display device, due to swelling of the deflecting means due to moisture absorption of the photopolymer material, the change in the characteristics of the deflecting means, for example, the pitch of the interference fringes, the inclination angle (slant angle) of the interference fringes It is possible to reliably avoid the occurrence of a problem such as a change and to provide a display device having stable characteristics.
- FIG. 8 is a conceptual diagram of the image display device 200 in the display device (head-mounted display) according to the second embodiment.
- the image forming device 211 includes the second configuration image forming device. Yes. That is, a light source 251 and scanning means 253 that scans the parallel light emitted from the light source 251 are provided.
- the image forming apparatus 211 is Light source 251, A collimating optical system 252 that collimates the light emitted from the light source 251; Scanning means 253 for scanning parallel light emitted from the collimating optical system 252, and A relay optical system 254 that relays and emits parallel light scanned by the scanning means 253; It is composed of Note that the entire image forming apparatus 211 is housed in a housing 213 (indicated by a one-dot chain line in FIG. 8), and the housing 213 is provided with an opening (not shown). Then, light is emitted from the relay optical system 254. Each housing 213 is detachably attached to the temple portion 13 by an attachment member 19.
- the light source 251 is composed of a light emitting element that emits white light. Then, the light emitted from the light source 251 enters the collimating optical system 252 having a positive optical power as a whole, and is emitted as parallel light. Then, the parallel light is reflected by the total reflection mirror 256, the micromirror can be rotated in a two-dimensional direction, and the scanning means 253 made of MEMS capable of two-dimensionally scanning the incident parallel light can be horizontally scanned and Vertical scanning is performed to form a kind of two-dimensional image, and virtual pixels (the number of pixels can be the same as in the first embodiment, for example) are generated. Then, the light from the virtual pixel passes through a relay optical system (parallel light emitting optical system) 254 configured with a well-known relay optical system, and a light beam converted into parallel light enters the optical device 120.
- a relay optical system parallel light emitting optical system
- the optical device 120 in which the light beam that has been converted into parallel light by the relay optical system 254 is incident, guided, and emitted has the same configuration and structure as the optical device described in the first embodiment. Omitted.
- the display device of the second embodiment has substantially the same configuration and structure as the display device of the first embodiment except that the image forming apparatus 211 is different, and thus detailed description thereof is omitted.
- Example 3 is also a modification of Example 1.
- FIG. 9 shows a conceptual diagram of an image display device 300 in the display device (head-mounted display) according to the third embodiment.
- the image forming apparatus 111 is configured by the image forming apparatus having the first configuration as in the first embodiment.
- the basic configuration and structure of the optical device 320 are the same as those of the optical device 120 of the first embodiment, except that the configuration and structure of the first deflecting unit 341 are different.
- the first deflecting unit 341 reflects the light incident on the first substrate (light guide plate) 321. That is, the first deflecting unit 341 reflects the parallel light incident on the first substrate 321 so that the parallel light incident on the first substrate 321 is totally reflected inside the first substrate 321.
- the first deflection unit 341 is made of a reflecting mirror disposed inside the first substrate 321, more specifically, aluminum (Al), and is formed on the first substrate 321. It is composed of a light reflecting film (a kind of mirror) that reflects incident light.
- the first deflecting unit 341 cuts a portion of the first substrate 321 where the first deflecting unit 341 is provided, thereby providing the first substrate 321 with an inclined surface on which the first deflecting unit 341 is to be formed, and providing a light reflecting film on the inclined surface. After vacuum deposition, the cut out portion of the first substrate 321 may be bonded to the first deflecting means 341.
- the second deflecting means 342 reflects and diffracts light propagating through the first substrate 321 by total reflection over a plurality of times. That is, in the second deflecting unit 342, the parallel light propagated through the first substrate 321 by total reflection is reflected and diffracted multiple times, and the pupil 21 of the observer 20 in the state of parallel light from the first substrate 321. It is emitted toward Similar to the second deflecting means 142 of the first embodiment, the second deflecting means 342 is made of a reflective volume hologram diffraction grating film.
- the display device according to the third embodiment has substantially the same configuration and structure as the display device according to the first embodiment except that the optical device 320 is different.
- Example 4 is a modification of Example 3.
- the conceptual diagram of the image display apparatus in the display apparatus (head-mounted display) of Example 4 is shown in FIG.
- the light source 251, the collimating optical system 252, the scanning unit 253, the parallel light emitting optical system (relay optical system 254), and the like in the image display device 400 of the fourth embodiment have the same configuration and structure (image formation of the second configuration) as the second embodiment. Device).
- the optical device 320 in the fourth embodiment has the same configuration and structure as the optical device 320 in the third embodiment. Since the display device of the fourth embodiment has substantially the same configuration and structure as the display device of the second embodiment except for the above differences, detailed description thereof is omitted.
- Embodiment 5 is a modification of the image display device in Embodiments 1 to 4.
- FIG. 11 shows a schematic diagram of the display device of Example 5 viewed from the front
- FIG. 12 shows a schematic diagram of the display device viewed from above
- FIG. 13 shows a conceptual diagram of the image display device.
- the optical device 520 constituting the image display device 500 includes the light guide member 521 to which the light emitted from the image forming apparatuses 111A and 111B is incident, and the light guided by the light guide member 521. It consists of a semi-transmissive mirror 522 that emits toward the pupil 21 of the observer 20.
- the image forming apparatus may be the image forming apparatus 211 described in the second embodiment.
- the transflective mirror 522 may be planar or concave.
- the light guide member 521 includes a first substrate 121 having a first surface 121A and a second surface 121B facing the first surface 121A.
- a second substrate 122 having a first surface 122A and a second surface 122B facing the first surface 122A, the first surface 122A being disposed facing the first surface 121A of the first substrate 121;
- Deflecting means 523 disposed on the first surface 121A of the first substrate 121;
- a sealing member 124 for sealing the outer edge of the first surface 121A of the first substrate 121 and the outer edge of the first surface 122A of the second substrate 122;
- a moisture absorbing member 130 disposed in a space surrounded by the first substrate 121, the second substrate 122, and the sealing member 124; It has.
- the light guide member 521 is substantially composed of the first deflecting means 141 side and half of the optical device 120 of the first embodiment. Further, the second deflecting means 142 side and half of the optical device 120 of the first embodiment are replaced with a semi-transmissive mirror 522. The light guide member 521 and the semi-transmissive mirror 522 are bonded with an adhesive.
- the deflecting unit 523 is made of a material having water absorbability, and specifically, like the first deflecting unit 141 of the first embodiment, it is made of a hologram diffraction grating film made of a resin material.
- the moisture absorbing member 130 is disposed on the first surface 122A of the second substrate 122. Specifically, the hygroscopic member 130 is bonded to the entire surface of the first surface 122 ⁇ / b> A of the second substrate 122.
- the moisture absorbing member 130 is formed on the first surface 121A of the first substrate 121 in the same manner as shown in FIGS. 2A and 2B of FIG. 1 and FIGS. 3A and 3B. You may arrange
- the moisture absorbing member 130 is A region along the inside of the sealing member 124 of the first surface 122A of the second substrate 122, or A region along the inner side of the sealing member 124 of the first surface 121A of the first substrate 121, or A region along the inner side of the sealing member 124 of the first surface 122A of the second substrate 122, and a region along the inner side of the sealing member 124 of the first surface 121A of the first substrate 121; May be arranged. It is desirable that there is a gap of 1 ⁇ m or more between the hygroscopic member 130 and the sealing member 124.
- a protective film 132 may be disposed on the surface of the deflecting unit 523 facing the second substrate 122.
- the moisture absorbing member 130 and the protective film 132 are made of the same material, and the thickness t 1 of the moisture absorbing member 130 is thicker than the thickness t 2 of the protective film 132.
- t 2 ⁇ 10 ⁇ m t 2 ⁇ t 1 ⁇ 1mm Is preferably satisfied.
- the image forming apparatuses 111A and 111B are attached to the front unit 11 using, for example, screws.
- a light guide member 521 is attached to each of the image forming apparatuses 111A and 111B. Except for the differences described above, the display device of the fifth embodiment has substantially the same configuration and structure as the display devices of the first to fourth embodiments, and thus detailed description thereof is omitted.
- Example 6 is also a modification of the image display device in Examples 1 to 4.
- FIG. 14 shows a schematic view of the display device of Example 6 as viewed from above.
- illustration of the imaging device 17 was abbreviate
- FIG. 15 shows a conceptual diagram of a part of the optical device in the display device according to the sixth embodiment.
- the optical device 530 constituting the image display device 500 includes a virtual image forming member 531 on which the light emitted from the image forming devices 111A and 111B is incident.
- the virtual image forming member 531 includes a first substrate 121 having a first surface 121A and a second surface 121B facing the first surface 121A.
- a second substrate 122 having a first surface 122A and a second surface 122B facing the first surface 122A, the first surface 122A being disposed facing the first surface 121A of the first substrate 121;
- Deflecting means 533 disposed on the first surface 121A of the first substrate 121;
- a sealing member 124 for sealing the outer edge of the first surface 121A of the first substrate 121 and the outer edge of the first surface 122A of the second substrate 122;
- a moisture absorbing member 130 disposed in a space surrounded by the first substrate 121, the second substrate 122, and the sealing member 124; It has.
- the deflecting means 533 is made of a material having water absorption, specifically, a hologram diffraction grating film made of a resin material, more specifically, a reflection type hologram diffraction grating film.
- the moisture absorbing member 130 is disposed on the first surface 122A of the second substrate 122. Specifically, the hygroscopic member 130 is bonded to the entire surface of the first surface 122 ⁇ / b> A of the second substrate 122.
- the moisture absorbing member 130 is formed on the first surface 121A of the first substrate 121 in the same manner as shown in FIGS. 2A and 2B of FIG. 1 and FIGS. 3A and 3B. You may arrange
- the moisture absorbing member 130 is A region along the inside of the sealing member 124 of the first surface 122A of the second substrate 122, or A region along the inner side of the sealing member 124 of the first surface 121A of the first substrate 121, or A region along the inner side of the sealing member 124 of the first surface 122A of the second substrate 122, and a region along the inner side of the sealing member 124 of the first surface 121A of the first substrate 121; May be arranged. It is desirable that there is a gap of 1 ⁇ m or more between the hygroscopic member 130 and the sealing member 124.
- a protective film 132 may be disposed on the surface of the deflecting unit 533 facing the second substrate 122.
- the moisture absorbing member 130 and the protective film 132 are made of the same material, and the thickness t 1 of the moisture absorbing member 130 is thicker than the thickness t 2 of the protective film 132.
- t 2 ⁇ 10 ⁇ m t 2 ⁇ t 1 ⁇ 1mm Is preferably satisfied.
- the image forming apparatuses 111A and 111B are attached to the front unit 11 using, for example, screws.
- a virtual image forming member 531 is attached to each of the image forming apparatuses 111A and 111B.
- the image forming apparatus can be substantially the image forming apparatus 211 described in the second embodiment. Except for the differences described above, the display device of the sixth embodiment has substantially the same configuration and structure as the display devices of the first to fourth embodiments, and a detailed description thereof will be omitted.
- the light emitted from the light source 251 disposed in the housing 213 propagates through an optical fiber (not shown) and is, for example, scanned attached to the portion 11 ′ of the frame 10 near the nose pad.
- Light incident on the means 253 and scanned by the scanning means 253 enters the deflecting means 533.
- the light emitted from the light source 251 disposed in the housing 213 propagates through an optical fiber (not shown), and is attached, for example, above the portion of the frame 10 corresponding to each of both eyes.
- Light incident on the scanning unit 253 and scanned by the scanning unit 253 enters the deflecting unit 533.
- the light emitted from the light source 251 disposed in the housing 213 and incident on the scanning unit 253 disposed in the housing 213 and scanned by the scanning unit 253 is directly incident on the deflecting unit 533. To do. Then, the light reflected by the deflecting means 533 made of a reflective hologram diffraction grating film enters the observer's pupil.
- the seventh embodiment is a modification of the first to sixth embodiments.
- a conceptual diagram of the image display device is shown in FIG. 16, a schematic view of the display device viewed from above is shown in FIG. 17, and a schematic view of the image display device seen from the side is shown in FIG.
- a light shielding member 601 is disposed or provided outside the second surface 122B of the second substrate 122 so as to cover the first deflecting means 141, 341 or the deflecting means 523.
- the orthogonal projection image of the first deflection unit 141, 341 or the deflection unit 523 on the second substrate 122 is included in the orthogonal projection image of the light shielding member 601 on the second substrate 122.
- the region of the first surface 122A of the second substrate 122 or An area other than the area where the first deflecting means 141, 341 or the deflecting means 523 is arranged on the first surface 121A of the first substrate 121, or A region other than a region of the first surface 122A of the second substrate 122 and a region of the first surface 121A of the first substrate 121 where the first deflecting units 141 and 341 or the deflecting unit 523 are disposed;
- a moisture absorbing member 130 is disposed on the surface. The moisture absorbing member 130 is not disposed in the light guide region of the first substrate of the first substrate.
- a light shielding member 601 that shields incident external light is provided in the region of the optical device 120 where the light emitted from the image forming apparatuses 111A and 111B is incident.
- the region of the optical device 120 into which the light emitted from the image forming apparatuses 111A and 111B is incident is included in the projected image of the light shielding member 601 onto the optical device 120.
- the light shielding member 601 is disposed away from the optical device 120 on the side opposite to the side on which the image forming apparatuses 111A and 111B of the optical device 120 are disposed.
- the light shielding member 601 is made of, for example, an opaque plastic material, and the light shielding member 601 extends integrally from the housing 113 of the image forming apparatuses 111A and 111B, or alternatively, the housing 113 of the image forming apparatuses 111A and 111B. Or alternatively integrally extending from the frame 10 or alternatively attached to the frame 10 or alternatively attached to the optical device 120. In the illustrated example, the light shielding member 601 extends integrally from the housing 113 of the image forming apparatuses 111A and 111B.
- the light-shielding member that blocks the incidence of external light to the optical device is arranged in the region of the optical device where the light emitted from the image forming device is incident, the light emitted from the image forming device is emitted. Since external light does not enter the region of the optical device where light is incident, specifically, the first deflecting unit 141, undesired stray light or the like is generated, which may lead to deterioration in image display quality in the display device. No.
- the light shielding member 602 is disposed on the portion of the optical device 120 opposite to the side on which the image forming apparatuses 111A and 111B are disposed.
- the opaque member 602 can be formed by printing opaque ink on the optical device 120 (specifically, the second surface 122B of the second substrate 122).
- the light shielding member 601 and the light shielding member 602 can be combined.
- the light shielding member 602 may be formed on the first surface 122 ⁇ / b> A of the second substrate 122.
- FIG. 20 shows a conceptual diagram of the image display device of Example 8
- FIG. 21 shows a schematic view of the display device of Example 8 from above
- FIG. 22A shows a schematic view of the image display device seen from the side
- FIG. 22B shows a schematic front view of the optical device and the light control device
- FIG. 23A shows a schematic cross-sectional view of the light control device
- FIG. 23B shows a schematic plan view of the light control device.
- the light control device 700 is arranged on the second surface side of the second substrates 122 and 322.
- the light control device 700 adjusts the amount of external light incident from the outside.
- the virtual image forming regions of the optical devices 120, 320, and 520 overlap the light control device 700, and when a virtual image is formed in a part of the virtual image formation region based on the light emitted from the image forming devices 111 and 211, the light control device 700 is adjusted.
- the light control device 700 is configured such that the light shielding rate of the virtual image projection area 711 of the light control device 700 including the projection image of the virtual image on the light device 700 is higher than the light shielding rate of the other region 712 of the light control device 700. Be controlled.
- the position of the virtual image projection area 711 is not fixed, but changes depending on the position where the virtual image is formed, and the number of virtual image projection areas 711 is also the number of virtual images (or a series of virtual images). The number of groups, the number of blocked virtual image groups, etc.).
- the light shielding rate of the other area 712 of the light control device 700 is “1” as the light shielding rate of the virtual image projection region of the light control device 700 including the projection image of the virtual image on the light control device 700.
- the light shielding rate of other regions of the light control device 700 is, for example, 30% or less.
- the light shielding rate of the virtual image projection region 711 of the light control device 700 is set to 35% to 99%, for example, 80%.
- the light shielding rate of the virtual image projection area 711 may be constant or may be changed depending on the illuminance of the environment where the display device is placed, as will be described later.
- the amount of external light incident from the outside is provided on the side opposite to the side where the image forming apparatuses 111 and 211 of the optical devices 120, 320, and 520 are disposed.
- a light control device 700 which is a kind of optical shutter to be adjusted, is provided.
- the second substrates 122 and 322 also serve as the first light-control device substrate 701 of the light-control device 700, thereby reducing the weight of the entire display device. There is no risk of discomfort. Further, the second substrate for light control device 703 can be made thinner than the second substrate 122. The same applies to the ninth to tenth embodiments.
- the present invention is not limited to this, and the second substrates 122 and 322 and the first substrate for light control device 701 of the light control device 700 may be formed of different members.
- size of the light modulation apparatus 700 may be the same as the 2nd board
- the virtual image forming region (second deflecting means 142, 342) may be positioned in the projected image of the light control device 700.
- the light control device 700 is disposed in a region of the optical devices 120, 320, and 520 on the opposite side to the observer 20.
- the optical device 120 and the light control device 700 are arranged in this order, but the light control device 700 and the optical devices 120 and 320 may be arranged in this order.
- a connector (not shown) is attached to the light control device 700, and the light control device 700 is connected to a control circuit (specifically, the control device 18) for controlling the light shielding rate of the light control device 700 via this connector and wiring.
- a control circuit specifically, the control device 18
- the light control device 700 has a schematic cross-sectional view shown in FIG. 23A and a schematic plan view shown in FIG. 23B.
- a first substrate 701 for a light control device A second substrate for light control device 703 facing the first substrate for light control device 701;
- a first transparent electrode 702 provided on an opposing surface of the first light control device substrate 701 facing the second light control device substrate 703;
- a second transparent electrode 704 provided on the facing surface of the second substrate for light control device 703 facing the first substrate for light control device 701, and
- the first transparent electrode 702 is composed of a plurality of strip-shaped first transparent electrode segments 702A extending in the first direction
- the second transparent electrode 704 is composed of a plurality of strip-shaped second transparent electrode segments 704A extending in a second direction different from the first direction
- the control of the light shielding rate of the portion of the light control device corresponding to the overlapping region of the first transparent electrode segment 702A and the second transparent electrode segment 704A is the first transparent electrode This is performed based on control of the voltage applied to the segment 702A and the second transparent electrode segment 704A. That is, the light shielding rate is controlled based on the simple matrix method.
- the first direction and the second direction are orthogonal to each other. Specifically, the first direction extends in the horizontal direction (X-axis direction), and the second direction extends in the vertical direction (Y-axis direction). .
- the second substrate for light control device 703 is made of a plastic material.
- the first transparent electrode 702 and the second transparent electrode 704 are made of a transparent electrode made of indium-tin composite oxide (ITO), and are formed based on a combination of a PVD method such as a sputtering method and a lift-off method. .
- a protective layer 706 made of TiO 2 layer or a laminated film is formed between the second transparent electrode 704 DOO dimmer for the second substrate 703, SiN layer, SiO 2 layer, Al 2 O 3 layer.
- the protective layer 706 By forming the protective layer 706, the light control device 700 can be provided with ion blocking properties, waterproof properties, moisture proof properties, and scratch resistances that prevent the passage of ions.
- the second substrate 122 (first substrate for light control device 701) and the second substrate for light control device 703 are ultraviolet light such as an ultraviolet curable epoxy resin or an epoxy resin that is cured by ultraviolet light and heat at the outer edge. It is sealed with a sealing material 707 made of a curable resin or a thermosetting resin.
- the 1st transparent electrode 702 and the 2nd transparent electrode 704 are connected to the control apparatus 18 via the connector and wiring which are not shown in figure.
- the light shielding rate (light transmittance) of the light control device 700 can be controlled by the voltage applied to the first transparent electrode 702 and the second transparent electrode 704. Specifically, for example, when a voltage is applied to the second transparent electrode 704 with the first transparent electrode 702 grounded, the light blocking rate of the light control layer 705 changes.
- the potential difference between the first transparent electrode 702 and the second transparent electrode 704 may be controlled, or the voltage applied to the first transparent electrode 702 and the voltage applied to the second transparent electrode 704 may be controlled independently. Also good.
- the light control device 700 includes an optical shutter that applies a color change of a substance generated by an oxidation-reduction reaction of an electrochromic material.
- the light control layer includes an electrochromic material. More specifically, the light control layer has a laminated structure of a WO 3 layer 705A / Ta 2 O 5 layer 705B / Ir X Sn 1-X O layer 705C from the second transparent electrode side. The WO 3 layer 705A is reduced in color. Further, the Ta 2 O 5 layer 705B constitutes a solid electrolyte, and the Ir x Sn 1-x O layer 705C is oxidized and colored.
- the Ir X Sn 1-X O layer by the reaction Ir and H 2 O, present as iridium hydroxide Ir (OH) n.
- Ir (OH) n iridium hydroxide
- the proton H + moves from the Ir X Sn 1-X O layer to the Ta 2 O 5 layer
- the first transparent electrode Electron emission to 702 occurs, the next oxidation reaction proceeds, and the Ir x Sn 1-x O layer is colored.
- the Ta 2 O 5 layer contains H 2 O and is ionized by applying a voltage to the first transparent electrode and the second transparent electrode, and includes proton H + and OH ⁇ ion states. Contributes to coloring and decoloring reactions.
- the observer views the outside world as shown in FIG. 24 through the light control device 700 and the optical devices 120, 320, and 520 having a low light shielding rate.
- the observer wants to obtain information on “how to go to the station”.
- the display device includes a communication means (transmission / reception device), for example, a mobile phone or a smart phone, or by incorporating a communication means (reception device) in the control device (control circuit, control means) 18.
- a communication means transmission / reception device
- the control device control circuit, control means
- Various types of information, data, and signals can be exchanged and exchanged between the cloud computer or server and the display device, and signals based on the various information and data, that is, the image display devices 100, 200, and 300 can be exchanged.
- 400, 500 can receive a signal for displaying an image. Can the receive signals.
- the control device 18 receives a signal for displaying an image in the image display devices 100, 200, 300, 400, 500.
- the control device 18 performs known image processing based on this signal, and displays “information about the station” as an image on the image forming devices 111 and 211.
- An image of this “information about the station” is displayed as a virtual image at a predetermined position controlled by the control device 18 based on the light emitted from the image forming devices 111 and 211 in the optical devices 120, 320 and 520.
- a virtual image is formed in a part of the virtual image forming region (second deflecting means 142, 342). Then, the light control is performed so that the light shielding rate of the virtual image projection region 711 of the light control device 700 including the projection image of the virtual image on the light control device 700 is higher than the light shielding rate of the other region 712 of the light control device 700.
- the device 700 is controlled (see FIG. 25B). Specifically, the voltage applied to the first transparent electrode 702 and the second transparent electrode 704 is controlled by the control device 18.
- the size and position of the virtual image projection area 711 of the light control device 700 are determined based on signals for displaying images in the image forming apparatuses 111 and 211.
- a signal for displaying an image on the image display devices 100, 200, 300, 400, and 500 is displayed on the display device (specifically, the control device 18, more specifically, the image information storage device 18A). May be stored.
- the image captured by the image capturing device 17 provided in the display device is sent to the cloud computer or server via the communication means, and various information corresponding to the image captured by the image capturing device 17 in the cloud computer or server Data is retrieved, the retrieved various information and data are sent to the display device via the communication means, and the retrieved various information and data are displayed on the image display devices 100, 200, 300, 400, 500. Also good.
- information such as the location of the observer and the direction in which the observer is facing can be weighted.
- the “information about the station” can be displayed on the image forming apparatuses 111 and 211 with accuracy.
- the light blocking ratio of the virtual image projection region 711 of the light control device 700 is increased.
- a form may be employ
- the light blocking rate of the virtual image projection region 711 of the light control device 700 can be configured to increase sequentially as time passes. That is, a so-called fade-in state can be achieved.
- the light shielding rate of the entire light control device 700 may be set to the same value as the light shielding rate of other regions of the light control device 700.
- the light shielding rate of the virtual image projection region 711 of the light control device 700 that includes the projection image of the virtual image on the light control device 700 is immediately determined.
- it may be set to the same value as the light blocking rate of the other region, it may be controlled so as to be the same value as the light blocking rate of the other regions of the light control device 700 over time (for example, in 3 seconds). That is, a so-called fade-out state can be achieved.
- one virtual image is formed in the optical devices 120, 320, and 520 based on the light emitted from the image forming apparatuses 111 and 211, and then the next virtual image different from the one virtual image is formed.
- the area of the virtual image projection region 711 of the light control device 700 corresponding to one virtual image is S 1
- the area of the virtual image projection region 711 of the light control device 700 corresponding to the next virtual image is S 2
- S 2 / S 1 ⁇ 0.8 or 1 ⁇ S 2 / S 1
- the virtual image projection region 711 of the light control device 700 in which the next virtual image is formed is the next virtual image to the light control device 700. It is a region of the light control device 700 including the projection image (see FIGS.
- the virtual image projection area 711 of the light control device 700 in which the next virtual image is formed is a light control including a projection image of one virtual image on the light control device 700. It may be a form that is an area of the device 700. That is, in the formation of one virtual image to the next virtual image, when the area of the virtual image projection region is reduced by 0% to 20%, the virtual image projection region corresponding to the one virtual image may be held. Yes (ie, keep the state shown in FIG. 26A).
- the virtual image projection region 711 of the light control device 700 is the virtual rectangles 142A and 342A. It can be set as a bigger structure.
- the horizontal and vertical lengths of the virtual rectangles 142A and 342A circumscribing the virtual images formed on the optical devices 120, 320, and 520 are L 1 -T and L 1 -L
- the light control device 700 When the shape of the virtual image projection area 711 is a rectangular shape having lengths L 2 -T and L 2 -L in the horizontal and vertical directions, 1.0 ⁇ L 2-T / L 1-T ⁇ 1.5 1.0 ⁇ L 2-L / L 1-L ⁇ 1.5 Is preferably satisfied.
- FIG. 27 shows a state where “ABCD” is formed as a virtual image.
- the light control device 700 may be always in an operating state, an operating / non-operating (on / off) state may be defined by an instruction (operation) of an observer, and is normally in an inactive state. The operation may be started based on a signal for displaying an image in the image display devices 100, 200, 300, 400, and 500.
- the display device further includes a microphone, and the operation of the light control device 700 is controlled by voice input via the microphone. Just do it.
- the operation / non-operation switching of the light control device 700 may be controlled by an instruction based on the observer's real voice. Alternatively, information to be obtained may be input by voice input.
- the display device further includes an infrared light incident / exit device, and the operation of the light control device 700 may be controlled by the infrared light incident / exit device. Specifically, it is only necessary to control the operation / non-operation switching of the light control device 700 by detecting the blink of the observer with an infrared incident / exit device.
- a projection image of the virtual image on the light control device is included. Since the light control device is controlled so that the light shielding rate of the virtual image projection area of the light control device is higher than the light shielding rate of other regions of the light control device, a high contrast can be given to the virtual image observed by the observer. In addition, since the high light-shielding rate area is not the entire light control device, only a narrow region such as the virtual image projection region of the light control device that includes the projection image of the virtual image on the light control device is the high light-shielding rate region. An observer who uses the apparatus can recognize the external environment reliably and safely.
- the frame includes a front portion disposed in front of the observer, two temple portions rotatably attached to both ends of the front portion via hinges, and a nose pad; It can be set as the form arrange
- the optical device may be attached to the light control device 700.
- the optical device may be attached to the light control device 700 in a close contact state, or may be attached to the light control device 700 in a state where a gap is opened.
- the front portion has a rim; the light control device 700 may be fitted into the rim, or alternatively, the second substrate 122 (for the light control device).
- At least one of the first substrate 701) and the second substrate for light control device 703 may be fitted into the rim, and the light control device 700 and the first substrate 121, 321 may be fitted into the rim.
- the first substrate 121, 321 may be fitted into the rim.
- the light control layer 705 can also be comprised from the optical shutter which consists of a liquid crystal display device.
- the light control layer 705 can be formed of a liquid crystal material layer made of, for example, a TN (twisted nematic) liquid crystal material or an STN (super twisted nematic) liquid crystal material.
- the first transparent electrode 702 and the second transparent electrode 704 are patterned, and the light shielding rate (light transmittance) of a part of the region 712 of the light control device 700 is changed to a state different from the light shielding rate of other regions. Can be made.
- one of the first transparent electrode 702 and the second transparent electrode 704 is a so-called solid electrode that is not patterned, the other is patterned, and the other is connected to the TFT. Then, the TFT controls the light shielding rate of the minimum unit region 708 in which the light shielding rate of the light control device 700 changes. That is, the light shielding rate may be controlled based on the active matrix method. It goes without saying that the light blocking rate control based on the active matrix method can be applied to the light control device 700 described in the eighth embodiment or the ninth to tenth embodiments described later.
- an optical shutter that controls the light shielding rate (light transmittance) by an electrowetting phenomenon can also be used.
- a first transparent electrode and a second transparent electrode are provided, and a space between the first transparent electrode and the second transparent electrode is filled with an insulating first liquid and a conductive second liquid.
- the structure is as follows. Then, by applying a voltage between the first transparent electrode and the second transparent electrode, the shape of the interface formed by the first liquid and the second liquid changes from a flat shape to a curved state, for example. By doing so, the light shielding rate (light transmittance) can be controlled.
- an optical shutter using an electrodeposition method (electrodeposition / field deposition) based on an electrodeposition / dissociation phenomenon generated by a reversible oxidation-reduction reaction of a metal (for example, silver particles) can be used.
- a metal for example, silver particles
- Ag + and I ⁇ are dissolved in an organic solvent, and by applying an appropriate voltage to the electrode, Ag + is reduced to precipitate Ag, so that the light shielding rate of the light control device is reduced. (Light transmittance) is lowered, while Ag is oxidized and dissolved as Ag + , thereby increasing the light shielding rate (light transmittance) of the light control device.
- the light passing through the light control device can be colored to a desired color by the light control device, and in this case, the color to be colored by the light control device can be made variable. Specifically, for example, a light control device colored in red, a light control device colored in green, and a light control device colored in blue may be stacked.
- the light control device may be detachably disposed in the region where the light of the optical device is emitted.
- the light control device is attached to the optical device using a screw made of transparent plastic, and the light transmittance of the light control device is controlled.
- it may be connected to a control circuit (for example, included in the control device 18 for controlling the image forming apparatus) via a connector and wiring.
- Example 9 is a modification of Example 8.
- FIG. 28A shows a schematic view of the display device of Example 9 as viewed from above.
- FIG. 28B shows a schematic diagram of a circuit that controls the environmental illuminance measurement sensor.
- the display device of Example 9 further includes an environmental illuminance measurement sensor 721 that measures the illuminance of the environment in which the display device is placed. Based on the measurement result of the environmental illuminance measurement sensor 721, the light shielding rate of the light control device 700 is determined. Control. In addition, or independently, the brightness of the image formed by the image forming apparatuses 111 and 211 is controlled based on the measurement result of the environmental illuminance measurement sensor 721.
- the ambient illuminance measurement sensor 721 having a known configuration and structure may be disposed at the outer end of the optical devices 120 and 320 or the outer end of the light control device 700, for example.
- the environmental illuminance measurement sensor 721 is connected to the control device 18 via a connector and wiring (not shown).
- the control device 18 includes a circuit that controls the environmental illuminance measurement sensor 721.
- the circuit for controlling the environmental illuminance measurement sensor 721 receives a measurement value from the environmental illuminance measurement sensor 721, and an illuminance calculation circuit for obtaining illuminance, and a comparison calculation circuit for comparing the illuminance value obtained by the illuminance calculation circuit with a standard value.
- the ambient light intensity sensor control circuit controls the light control device 700 and / or the image forming devices 111 and 211 based on the values obtained by the comparison operation circuit. These circuits are configured from well-known circuits. can do. In the control of the light control device 700, the light blocking rate of the light control device 700 is controlled.
- control of the image forming devices 111 and 211 the images formed by the image forming devices 111 and 211 are controlled. Control brightness. Note that the control of the light blocking ratio in the light control device 700 and the control of the luminance of the image in the image forming apparatuses 111 and 211 may be performed independently, or may be performed with correlation.
- the light shielding rate of the light control device 700 is set to be equal to or higher than a predetermined value (first light shielding rate).
- the measurement result of the environmental illuminance measurement sensor 721 becomes equal to or less than a predetermined value (second illuminance measurement value)
- the light shielding rate of the light control device 700 is set to be equal to or smaller than the predetermined value (second light shielding rate).
- 10 lux can be given as the first illuminance measurement value
- any value from 99% to 70% can be given as the first light shielding rate
- 0 can be given as the second illuminance measurement value.
- 0.01 lux can be given
- the second light-shielding rate can be any value between 49% and 1%.
- the environmental illuminance measurement sensor 721 according to the ninth embodiment can be applied to the display devices described in the first to seventh embodiments.
- the environmental illuminance measurement sensor 721 can also be configured from an exposure measurement light-receiving element provided in the imaging device 17.
- the light shielding rate of the light control device is controlled based on the measurement result of the environmental illuminance measurement sensor, and based on the measurement result of the environmental illuminance measurement sensor, Controls the brightness of the image formed by the image forming device, controls the light shielding rate of the light control device based on the measurement result of the transmitted light illuminance measurement sensor, and forms the image based on the measurement result of the transmitted light illuminance measurement sensor Since the brightness of the image formed by the device is controlled, not only can a high contrast be given to the virtual image observed by the observer, but also the observation state of the virtual image depends on the illuminance of the surrounding environment where the display device is placed. Optimization can be achieved.
- Example 10 is also a modification of Example 8.
- FIG. 29A shows a schematic view of the display device of Example 10 as viewed from above.
- FIG. 29B shows a schematic diagram of a circuit that controls the transmitted light illuminance measurement sensor.
- the display device of Example 10 measures the illuminance based on the light transmitted through the light control device from the external environment, that is, measures whether the ambient light is transmitted through the light control device and adjusted to a desired illuminance.
- the transmitted light illuminance measurement sensor 722 is further provided, and the light shielding rate of the light control device 700 is controlled based on the measurement result of the transmitted light illuminance measurement sensor 722.
- the brightness of the image formed by the image forming apparatuses 111 and 211 is controlled based on the measurement result of the transmitted light illuminance measurement sensor 722.
- the transmitted light illuminance measurement sensor 722 having a known configuration and structure is arranged closer to the viewer than the optical devices 120, 320, and 520.
- the transmitted light illuminance measurement sensor 722 may be disposed, for example, on the inner surface of the housings 113 and 213 or the surface of the first substrates 121 and 321 on the viewer side.
- the transmitted light illuminance measurement sensor 722 is connected to the control device 18 via a connector and wiring (not shown).
- the control device 18 includes a circuit that controls the transmitted light illuminance measurement sensor 722.
- the circuit that controls the transmitted light illuminance measurement sensor 722 receives a measurement value from the transmitted light illuminance measurement sensor 722, and an illuminance calculation circuit that calculates the illuminance, and a comparison calculation circuit that compares the illuminance value determined by the illuminance calculation circuit with a standard value.
- a transmitted light illuminance measurement sensor control circuit that controls the light control device 700 and / or the image forming devices 111 and 211 based on the values obtained by the comparison operation circuit.
- These circuits are configured from known circuits. can do.
- the control of the light control device 700 the light blocking rate of the light control device 700 is controlled, and in the control of the image forming devices 111 and 211, the brightness of the images formed by the image forming devices 111 and 211 is controlled.
- the control of the light blocking ratio in the light control device 700 and the control of the luminance of the image in the image forming apparatuses 111 and 211 may be performed independently, or may be performed with correlation.
- the measurement result of the transmitted light illuminance measurement sensor 722 is not controlled to the desired illuminance in view of the illuminance of the environmental illuminance measurement sensor 721, that is, when the measurement result of the transmitted light illuminance measurement sensor 722 is not the desired illuminance.
- the light shielding rate of the light control device may be adjusted while monitoring the value of the transmitted light illuminance measurement sensor 722.
- At least two transmitted light illuminance measurement sensors may be arranged to measure the illuminance based on the light that has passed through the portion with the high light blocking ratio and measure the illuminance based on the light that has passed through the portion with the low light blocking ratio.
- the transmitted light illuminance measurement sensor 722 in the tenth embodiment can be applied to the display devices described in the first to seventh embodiments.
- the transmitted light illuminance measurement sensor 722 according to the tenth embodiment and the ambient illuminance measurement sensor 721 according to the ninth embodiment may be combined.
- various tests are performed to control the light blocking rate and image formation in the light control device 700.
- the control of the brightness of the images in the devices 111 and 211 may be performed independently or with correlation.
- the potential difference between the first transparent electrode and the second transparent electrode may be controlled, or the voltage applied to the first transparent electrode and the voltage applied to the second transparent electrode may be controlled independently.
- the light blocking rate in the right eye light control device and the light blocking rate in the left eye light control device can be controlled, for example, based on the measurement result of the transmitted light illuminance measurement sensor 722, or the observer can Observe the brightness of the light that has passed through the right-eye dimmer and the optical device and the brightness of the light that has passed through the left-eye dimmer and the optical device, and the observer can switch, button, dial, slider It can also be controlled and adjusted manually by operating a knob or the like.
- Example 11 is a modification of Example 8 to Example 13.
- the light control layer was composed of an electrophoretic dispersion.
- a method for preparing an electrophoretic dispersion will be described.
- reaction flask equipped with a nitrogen purge apparatus, a magnetic stir bar and a reflux column, 5 grams of a solid, 100 cm 3 of toluene, 15 cm 3 of 2-ethylhexyl methacrylate, azobisisobutylnitrile (AIBN) 0. 2 grams and mixed.
- AIBN azobisisobutylnitrile
- N, N-dimethylpropane-1,3-diamine, 1,2-hydroxyoctadecanoic acid and methoxysulfonyloxymethane (Solsperse 17000 manufactured by Nippon Lubrizol Co., Ltd.) are used as the dispersion liquid (dispersion medium) which is an insulating liquid.
- 0.5% sorbitan trioleate (Span 85) and 1.5% sorbitan trioleate (ExxonMobil Co., Ltd.) solution was prepared.
- an electrophoretic dispersion liquid could be obtained.
- the electrophoretic particles are positively charged.
- the distance between the second substrate 122 (the first light control device substrate 701) and the second light control device substrate 703 was set to 50 ⁇ m.
- the first transparent electrode 702 and the second transparent electrode 704 are made of indium-tin composite oxide (ITO), and are formed based on a combination of a PVD method such as a sputtering method and a lift-off method.
- the first transparent electrode 702 is patterned into a comb-like electrode shape.
- the second transparent electrode 704 is not patterned and is a so-called solid electrode.
- the 1st transparent electrode 702 and the 2nd transparent electrode 704 are connected to the control apparatus 18 via the connector and wiring which are not shown in figure.
- the light shielding rate (light transmittance) of the light control device 700 can be controlled by the voltage applied to the first transparent electrode 702 and the second transparent electrode 704. Specifically, when a relatively positive voltage is applied to the first transparent electrode 702 and a relatively negative voltage is applied to the second transparent electrode 704, the positively charged electrophoretic particles are second transparent. Electrophoresis is performed so as to cover the electrode 704. Therefore, the light shielding rate in the light control device 700 is a high value. On the other hand, when a relatively negative voltage is applied to the first transparent electrode 702 and a relatively positive voltage is applied to the second transparent electrode 704, the electrophoretic particles cause the first transparent electrode 702 to move. Run to cover. Therefore, the light shielding rate in the light control device 700 is a low value.
- the voltage applied to the first transparent electrode 702 and the second transparent electrode 704 can be performed by an observer operating a control knob provided in the control device 18. That is, the observer may observe the virtual images from the optical devices 120 and 320 and adjust the light shielding rate of the light control device 700 to improve the contrast of the virtual images.
- Example 12 is a modification of Example 11.
- the color colored by the light control device 700 was a black fixed color.
- the light passing through the light control device is colored to a desired color by the light control device, and the color to be colored by the light control device is variable.
- the light control device includes a light control device colored in red, a light control device colored in yellow, and a light control device colored in blue.
- the electrophoretic dispersion liquid in the light control device colored in red is styrene resin and C.I. I.
- Pigment Red 122 was premixed with a Henschel mixer, melt-kneaded with a twin screw extruder, cooled, coarsely ground with a hammer mill, and then finely ground with a jet mill.
- -0.5% of dimethylpropane-1,3-diamine, 1,2-hydroxyoctadecanoic acid and methoxysulfonyloxymethane Solsperse 17000 manufactured by Nippon Lubrizol Co., Ltd.
- sorbitan trioleate (span 85) It is comprised from the dispersion liquid obtained by making it disperse
- the electrophoretic dispersion liquid in the light control device colored yellow is a styrene resin and C.I. I. Pigment® Yellow 12 was premixed with a Henschel mixer, melt-kneaded with a twin-screw extruder, cooled, coarsely pulverized with a hammer mill, and then finely pulverized with a jet mill.
- the electrophoretic dispersion liquid in the light control device colored in blue is a styrene resin and C.I. I.
- Pigment Blue 1 was premixed with a Henschel mixer, melt-kneaded with a twin screw extruder, cooled, coarsely pulverized with a hammer mill, and then finely pulverized with a jet mill.
- -0.5% of dimethylpropane-1,3-diamine, 1,2-hydroxyoctadecanoic acid and methoxysulfonyloxymethane Solsperse 17000 manufactured by Nippon Lubrizol Co., Ltd.
- a desired color can be colored to the external light radiate
- the configuration and structure of the display device according to the twelfth embodiment can be the same as the configuration and structure of the display device described in the eleventh embodiment.
- Example 13 is a modification of Example 1 to Example 12.
- the first deflection means A (141A) is disposed on the first surface 121A of the first substrate 121, and the first deflection is performed on the second surface 121B of the first substrate 121.
- the third substrate 123 is provided so as to cover the second surface 121B of the first substrate 121 with the means B (141B).
- the outer edge portion of the second surface 121B of the first substrate 121 and the outer edge portion of the first surface 123A of the third substrate 123 are sealed by the sealing member 125.
- the moisture absorbing member 130 is disposed in a space surrounded by the first substrate 121, the third substrate 123, and the sealing member 125.
- ⁇ 1A Slant angle of the 1A interference fringe
- ⁇ 1B Slant angle of the 1B interference fringe
- ⁇ 2 Slant angle of the second interference fringe
- P 1A Pitch of the 1A interference fringe
- P 1B 1B interference Stripe pitch
- P 2 The pitch of the second interference fringes.
- ⁇ 1A ⁇ 2 ⁇ 1B It can be set as the form which satisfies this relationship.
- ⁇ 1A peak wavelength of light incident on the first substrate and deflected by the first deflecting means A
- ⁇ 1B peak wavelength of light incident on the first substrate and deflected by the first deflecting means B
- ⁇ 2 first This is the peak wavelength of light that is deflected by the first deflecting means A and the first deflecting means B, propagates through the first substrate by total reflection, and is deflected by the second deflecting means.
- the optical device according to the thirteenth embodiment, the image display device according to the thirteenth embodiment including the optical device according to the thirteenth embodiment, or the display device according to the thirteenth embodiment includes the first to third embodiments. Since it can be set as the structure and structure similar to the image display apparatus and display apparatus which were demonstrated in Example 12, detailed description is abbreviate
- the present disclosure has been described based on the preferred embodiments, the present disclosure is not limited to these embodiments.
- the configurations and structures of the display device (head-mounted display), the image display device, and the optical device described in the embodiments are examples, and can be changed as appropriate.
- a surface relief hologram (see US 20040062505A1) may be disposed on the first substrate (light guide plate).
- the deflecting means can be constituted by a transmissive hologram diffraction grating film, or either one of the first deflecting means and the second deflecting means is used as a reflection hologram diffraction.
- the deflecting means can be a reflective blazed diffraction grating film.
- the display device of the present disclosure can also be used as a stereoscopic display device. In this case, if necessary, a polarizing plate or a polarizing film may be detachably attached to the optical device, or a polarizing plate or a polarizing film may be attached to the optical device.
- the image forming apparatuses 111 and 211 have been described as displaying a single-color (for example, green) image.
- the image forming apparatuses 111 and 211 can also display a color image.
- what is necessary is just to comprise from the light source which radiate
- red light, green light, and blue light emitted from each of a red light emitting element, a green light emitting element, and a blue light emitting element are mixed using a light pipe, and white light is obtained by performing luminance equalization. It only has to be obtained.
- this indication can also take the following structures.
- ⁇ Optical device A first substrate having a first surface and a second surface opposite the first surface; A second substrate having a first surface and a second surface facing the first surface, wherein the first surface is disposed opposite to the first surface of the first substrate; Deflection means disposed on the first surface of the first substrate; A sealing member for sealing the outer edge of the first surface of the first substrate and the outer edge of the first surface of the second substrate; and A hygroscopic member disposed in a space surrounded by the first substrate, the second substrate and the sealing member; An optical device comprising: [A02] The optical device according to [A01], wherein the hygroscopic member is disposed on the first surface of the second substrate.
- optical device wherein the optical device is disposed in a region along the inner side of the sealing member on the first surface and a region along the inner side of the sealing member on the first surface of the first substrate.
- optical device in which a light shielding member is disposed outside the second surface of the second substrate so as to cover the deflection unit.
- orthogonal projection image of the deflecting unit to the second substrate is included in the orthogonal projection image of the light shielding member to the second substrate.
- [A08] A region in the orthogonal projection image of the light shielding member to the second substrate, other than the region of the first surface of the second substrate or the region where the deflecting means of the first surface of the first substrate is arranged.
- the moisture absorbing member is disposed in the region, or the region other than the region of the first surface of the second substrate and the region of the first surface of the first substrate where the deflecting means is disposed.
- Optical device. [A09] The optical device according to any one of [A01] to [A08], wherein the deflecting unit is made of a material having water absorption.
- the deflection means is composed of a first deflection means and a second deflection means,
- the first deflecting means deflects the light incident on the first substrate so that the light incident on the first substrate is totally reflected inside the first substrate
- the second deflecting means deflects the light propagated through the first substrate by total reflection in order to emit the light propagated through the first substrate by total reflection from the first substrate.
- [A15] The optical device according to [A14], wherein the hygroscopic member is disposed on the first surface of the second substrate.
- [A16] The optical device according to [A15], wherein the hygroscopic member is bonded to the entire first surface of the second substrate.
- the moisture absorbing member is a region along the inside of the sealing member on the first surface of the second substrate, a region along the inside of the sealing member on the first surface of the first substrate, or the second substrate.
- the optical device according to any one of [A14] to [A21], wherein at least one of the first deflecting unit and the second deflecting unit is made of a material having water absorbency.
- the first deflection means is composed of a hologram diffraction grating film made of a resin material
- the optical device according to [A22], wherein the second deflecting unit includes a hologram diffraction grating film made of a resin material.
- [A24] The optical device according to any one of [A14] to [A23], wherein a protective film is disposed on a surface of the first deflection unit facing the second substrate and a surface of the second deflection unit.
- [A25] The optical device according to [A24], wherein the hygroscopic member and the protective film are made of the same material.
- [A26] The optical device according to [A25], wherein the hygroscopic member is thicker than the protective film.
- [A27] The optical device according to any one of [A01] to [A26], wherein the water absorption rate of the moisture absorbing member is higher than the water absorption rate of the material constituting the deflection unit.
- the hygroscopic member is any one of [A01] to [A27] made of at least one material selected from the group consisting of nanoporous silica, molecular sieve, zeolite, activated carbon, activated alumina, diatomaceous earth, montmorillonite, and bentonite.
- the optical device has a virtual image forming region in which a virtual image is formed based on light emitted from the image forming device,
- the virtual image forming area of the optical device overlaps with the light control device,
- the light shielding rate of the virtual image projection area of the dimming apparatus including the projection image of the virtual image on the dimming apparatus is dimming.
- the light shielding rate of the other area of the light control device is set to "1" in the virtual image projection area of the light control device including the projection image of the virtual image on the light control device.
- the light shielding rate of the virtual image projection area of the light control device is increased. Any one of [B01] to [B03] An optical device according to 1.
- the virtual image projection region of the light control device in which the next virtual image is formed is the region of the light control device including the projection image of one virtual image on the light control device
- the optical apparatus according to any one of [B01] to [B04]. [B06] When the virtual rectangle circumscribing the virtual image formed in the optical device is assumed, the virtual image projection area of the light control device is larger than the virtual rectangle. apparatus.
- the horizontal and vertical lengths of the virtual rectangle circumscribing the virtual image formed on the optical device are L 1 -T and L 1 -L, and the shape of the virtual image projection region of the light control device is the horizontal direction and When the vertical length is a rectangular shape with L 2-T and L 2-L , 1.0 ⁇ L 2-T / L 1-T ⁇ 1.5 1.0 ⁇ L 2-L / L 1-L ⁇ 1.5
- the optical device according to [B06] satisfying [B08]
- the light control device A first substrate for a light control device; A second substrate for light control device opposite to the first substrate for light control device; A first transparent electrode provided on the facing surface of the first substrate for light control device facing the second substrate for light control device; A second transparent electrode provided on the facing surface of the second substrate for light control device facing the first substrate for light control device, and A light control layer sandwiched between the first transparent electrode and the second transparent electrode,
- the optical device according to any one of [B01] to [B07].
- the first transparent electrode is composed of a plurality of strip-shaped first transparent electrode segments extending in the first direction
- the second transparent electrode is composed of a plurality of strip-shaped second transparent electrode segments extending in a second direction different from the first direction
- Control of the light shielding rate of the portion of the light control device corresponding to the overlapping region of the first transparent electrode segment and the second transparent electrode segment is performed based on control of the voltage applied to the first transparent electrode segment and the second transparent electrode segment.
- [B10] It further includes an environmental illuminance measurement sensor that measures the illuminance of the environment where the optical device is placed, The optical device according to any one of [B01] to [B09], which controls a light shielding rate of the light control device based on a measurement result of the environmental illuminance measurement sensor.
- [B12] further comprising a transmitted light illuminance measurement sensor for measuring the illuminance based on the light transmitted through the light control device from the external environment,
- the optical device according to any one of [B01] to [B11], which controls a light blocking rate of the light control device based on a measurement result of the transmitted light illuminance measurement sensor.
- [B13] further comprising a transmitted light illuminance measurement sensor that measures the illuminance based on the light transmitted through the light control device from the external environment;
- the optical device according to any one of [B01] to [B12] which controls brightness of an image formed by the image forming device based on a measurement result of the transmitted light illuminance measurement sensor.
- [B14] The optical device according to [B12] or [B13], in which the transmitted light illuminance measurement sensor is disposed closer to the observer than the optical device.
- [B15] The optical device according to any one of [B01] to [B14], in which light passing through the light control device is colored in a desired color by the light control device.
- [B16] The optical device according to [B15], in which a color colored by the light control device is variable.
- [B17] The optical device according to [B15], in which a color colored by the light control device is fixed.
- ⁇ Image display device >> (A) an image forming apparatus, and (B) an optical device that receives and emits light emitted from the image forming apparatus;
- An image display device comprising: The optical device A first substrate having a first surface and a second surface opposite the first surface; A second substrate having a first surface and a second surface facing the first surface, wherein the first surface is disposed opposite to the first surface of the first substrate; Deflection means disposed on the first surface of the first substrate; A sealing member for sealing the outer edge of the first surface of the first substrate and the outer edge of the first surface of the second substrate; and A hygroscopic member disposed in a space surrounded by the first substrate, the second substrate and the sealing member;
- An image display device comprising: [D01] ⁇ Display device >> (A) a frame to be worn on the observer's head; and (B) an image display device attached to the frame;
- a display device comprising: The image display device (A) an image forming apparatus, and (B) an optical
- SYMBOLS 10 Frame, 11 ... Front part, 11 '... Center part of front part, 12 ... Hinge, 13 ... Temple part, 14 ... Modern part, 15 ... Wiring ( Signal line, power line, etc.), 16 ... headphone section, 16 '... headphone section wiring, 17 ... imaging device, 18 ... control device (control circuit, control means), 18A ... Image information storage device, 19 ... mounting member, 20 ... observer, 21 ... pupil, 100, 200, 300, 400, 500 ... image display device, 111, 111A, 111B, 211 ... Image forming apparatus, 112... Optical system (collimating optical system), 113, 213...
- Light plate 121A, 321A ... first substrate First surface, 121B, 321B, second surface of first substrate, 122, 322, second substrate (protective member), 122A, 322A, first surface of first substrate, 122B, 322B, .... Second surface of first substrate, 123 ... third substrate, 123A ... First surface of third substrate, 123B ... Second surface of third substrate, 124, 125 ... Sealing Members 130, 131 ... moisture absorbing members, 132 ... protective film, 141, 341 ... first deflection means (first diffraction grating member), 142, 342 ...
- second deflection means (second diffraction) (Lattice member, virtual image forming region), 143... Third deflecting means, 150... Reflective spatial light modulator, 151... Liquid crystal display (LCD), 152. 153 ... Light source, 251 ... Light source, 252 ... Collimated light Science system, 253 ... Scanning means, 254 ... Optical system (relay optical system), 256 ... Total reflection mirror, 521 ... Light guide member, 522 ... Semi-transmissive mirror, 523 ... Deflection means, 531 ... virtual image forming member, 533 ... deflection means, 601, 602 ... light shielding member, 700 ... dimmer, 701 ...
- first substrate for dimmer (second substrate) 702 ... first transparent electrode, 702A ... first transparent electrode segment, 703 ... second substrate for light control device, 704 ... second transparent electrode, 704A ... second Transparent electrode segment, 705... Dimming layer, 705A... WO 3 layer, 705B... Ta 2 O 5 layer, 705C... Ir X Sn 1-X O layer, 706. 707 ... Sealing material, 708 ... Minimum unit region where the light shielding rate of the light control device changes, 21 ... environmental illuminance measuring sensor, 722 ... transmitted light illumination measuring sensor
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Abstract
Description
第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている。
(A)画像形成装置、及び、
(B)画像形成装置から出射された光が入射され、出射される光学装置、
を備えた画像表示装置であって、
光学装置は、上記の本開示の光学装置から成る。
(イ)観察者の頭部に装着されるフレーム、及び、
(ロ)フレームに取り付けられた画像表示装置、
を備えた表示装置であって、
画像表示装置は、
(A)画像形成装置、及び、
(B)画像形成装置から出射された光が入射され、出射される光学装置、
を備えており、
光学装置は、上記の本開示の光学装置から成る。
1.本開示の光学装置、画像表示装置及び表示装置、全般に関する説明
2.実施例1(本開示の光学装置、画像表示装置及び表示装置)
3.実施例2(実施例1の変形)
4.実施例3(実施例1の別の変形)
5.実施例4(実施例3の変形)
6.実施例5(実施例1~実施例4の変形)
7.実施例6(実施例1~実施例4の別の変形)
8.実施例7(実施例1~実施例6の変形)
9.実施例8(実施例1~実施例7の変形)
10.実施例9(実施例8の変形)
11.実施例10(実施例8~実施例9の変形)
12.実施例11(実施例8~実施例10の変形)
13.実施例12(実施例11の変形)
14.実施例13(実施例1~実施例12の変形)
15.その他
本開示の光学装置等において、吸湿部材は、第2基板の第1面に配置されている形態とすることができる。そして、この場合、吸湿部材は、第2基板の第1面の全面に貼り合わされている形態とすることができる。
第2基板の第1面の封止部材の内側に沿った領域、又は、
第1基板の第1面の封止部材の内側に沿った領域、又は、
第2基板の第1面の封止部材の内側に沿った領域、及び、第1基板の第1面の封止部材の内側に沿った領域、
に配置されている形態とすることができる。吸湿部材と封止部材との間には、1μm以上、隙間が空いていることが望ましい。
第2基板の第1面の領域、又は、
第1基板の第1面の偏向手段が配された領域以外の領域、又は、
第2基板の第1面の領域、及び、第1基板の第1面の偏向手段が配された領域以外の領域、
に吸湿部材が配置されている構成とすることができる。吸湿部材と第1偏向手段との間には、1μm以上、隙間が空いていることが望ましい。
t2≦10μm
t2<t1≦1mm
好ましくは、
1×10-7m≦t1≦3×10-4m
より好ましくは、
1×10-6m≦t1≦1×10-4m
更に好ましくは、
1×10-6m≦t1≦1×10-5m
を満足することが好ましい。保護膜で覆うことによって、偏向手段に損傷が生じることを防止することができる。
偏向手段は、第1偏向手段及び第2偏向手段から構成されており、
第1偏向手段は、第1基板に入射された光が第1基板の内部で全反射されるように、第1基板に入射された光を偏向させ、
第2偏向手段は、第1基板の内部を全反射により伝播した光を第1基板から出射させるために、第1基板の内部を全反射により伝播した光を偏向させる形態とすることができる。尚、このような形態の本開示の光学装置等を、便宜上、『本開示の光学装置-A』と呼ぶ。
第2基板の第1面の封止部材の内側に沿った領域、又は、
第1基板の第1面の封止部材の内側に沿った領域、又は、
第2基板の第1面の封止部材の内側に沿った領域、及び、第1基板の第1面の封止部材の内側に沿った領域、
に配置されている形態とすることができる。吸湿部材と封止部材との間には、1μm以上、隙間が空いていることが望ましい。
第2基板への遮光部材の正射影像内の領域であって、
第2基板の第1面の領域、又は、
第1基板の第1面の第1偏向手段が配された領域以外の領域、又は、
第2基板の第1面の領域、及び、第1基板の第1面の第1偏向手段が配された領域以外の領域、
に吸湿部材が配置されている構成とすることができる。吸湿部材と第1偏向手段との間には、1μm以上、隙間が空いていることが望ましい。
t2≦10μm
t2<t1≦1mm
好ましくは、
1×10-7m≦t1≦3×10-4m
より好ましくは、
1×10-6m≦t1≦1×10-4m
更に好ましくは、
1×10-6m≦t1≦1×10-5m
を満足することが好ましい。保護膜で覆うことによって、偏向手段に損傷が生じることを防止することができる。
調光装置用第1基板、
調光装置用第1基板と対向する調光装置用第2基板、
調光装置用第2基板と対向する調光装置用第1基板の対向面に設けられた第1透明電極、
調光装置用第1基板と対向する調光装置用第2基板の対向面に設けられた第2透明電極、及び、
第1透明電極と第2透明電極とによって挟まれた調光層、
から成る形態とすることができる。そして、この場合、例えば、
第1透明電極は、第1の方向に延びる複数の帯状の第1透明電極セグメントから構成されており、
第2透明電極は、第1の方向とは異なる第2の方向に延びる複数の帯状の第2透明電極セグメントから構成されており、
第1透明電極セグメントと第2透明電極セグメントの重複領域(調光装置の遮光率が変化する最小単位領域)に対応する調光装置の部分の遮光率の制御は、第1透明電極セグメント及び第2透明電極セグメントに印加する電圧の制御に基づき行われる形態とすることができる。即ち、遮光率の制御を単純マトリクス方式に基づき行うことができる。第1の方向と第2の方向とは直交している形態を例示することができる。
(光透過率)=1-(遮光率)
の関係にある。
第1基板(導光板)は、全体として画像形成装置よりも観察者の顔の中心側に配置されており、
2つの画像表示装置を結合する結合部材を更に有し、
結合部材は、観察者の2つの瞳の間に位置するフレームの中央部分の観察者に面する側に取り付けられており、
結合部材の射影像は、フレームの射影像内に含まれる構成とすることができる。
(イ)観察者20の頭部に装着されるフレーム10(例えば、眼鏡型のフレーム10)、及び、
(ロ)フレーム10に取り付けられた画像表示装置100,200,300,400,500、
を備えている。尚、実施例1あるいは後述する実施例2~実施例13の表示装置を、具体的には、2つの画像表示装置を備えた両眼型としたが、1つ備えた片眼型としてもよい。画像形成装置111,211は、例えば、単色(例えば、緑色)の画像(虚像)を表示する。そして、実施例1あるいは後述する実施例2~実施例13における画像表示装置100,200,300,400,500は、
(A)画像形成装置111,211、及び、
(B)画像形成装置111,211から出射された光が入射され、出射される光学装置120,320,520,530、
を備えている。更には、実施例1あるいは後述する実施例2~実施例13の表示装置にあっては、
(C)画像形成装置111,211から出射された光を平行光とする光学系(平行光出射光学系)112,254、
を備えており、光学系112,254にて平行光とされた光束が光学装置120,320,520,530に入射され、出射される。
第1面121A,321A、及び、第1面121A,321Aと対向した第2面121B,321Bを有する第1基板121,321、
第1面122A,322A、及び、第1面122A,322Aと対向した第2面122B,322Bを有し、第1面122A,322Aが第1基板121,321の第1面121A,321Aと対向して配設された第2基板122,322、
第1基板121,321の第1面に配された偏向手段141,142,341,342、
第1基板121,321の第1面121A,321Aの外縁部と第2基板122,322の第1面122A,322Aの外縁部を封止する封止部材124、並びに、
第1基板121,321と第2基板122,322と封止部材124とによって囲まれた空間内に配置された吸湿部材130、
を備えている。
偏向手段は、第1偏向手段141,341及び第2偏向手段142,342から構成されており、
第1偏向手段141,341は、第1基板121,321に入射された光が第1基板121,321の内部で全反射されるように、第1基板121,321に入射された光を偏向させ、
第2偏向手段142、342は、第1基板121、321の内部を全反射により伝播した光を第1基板121、321から出射させるために、第1基板121、321の内部を全反射により伝播した光を偏向させる。即ち、実施例1あるいは後述する実施例2~実施例4の光学装置は、本開示の光学装置-Aである。そして、第2偏向手段142,342によって光学装置120,320の虚像形成領域が構成される。
(B-1)画像形成装置111,211から入射された光が内部を全反射により伝播した後、観察者20に向けて出射される第1基板(導光板)121,321、
(B-2)第1基板(導光板)121,321に入射された光が第1基板121,321の内部で全反射されるように、第1基板121,321に入射された光を偏向させる第1偏向手段141,341、及び、
(B-3)第1基板(導光板)121,321の内部を全反射により伝播した光を第1基板121,321から出射させるために、第1基板121,321の内部を全反射により伝播した光を複数回に亙り偏向させる第2偏向手段142,342、
から成る光学装置120,320を備えており、
第2偏向手段142,342によって光学装置の虚像形成領域が構成される。
Θ=90°-(φ+ψ) (B)
第2基板122,322の第1面122A,322Aの封止部材124の内側に沿った領域、又は、
第1基板121,321の第1面121A,321Aの封止部材124の内側に沿った領域、又は、
第2基板122,322の第1面122A,322Aの封止部材124の内側に沿った領域、及び、第1基板121,321の第1面121A,321Aの封止部材124の内側に沿った領域、
に配置することもできる。この場合にも、吸湿部材130と封止部材124との間には、1μm以上、隙間が空いていることが望ましい。
t2≦10μm
t2<t1≦1mm
を満足することが好ましい。より具体的には、
t1=5μm
t2=2.5μm
とした。
光源251、
光源251から出射された光を平行光とするコリメート光学系252、
コリメート光学系252から出射された平行光を走査する走査手段253、及び、
走査手段253によって走査された平行光をリレーし、出射するリレー光学系254、
から構成されている。尚、画像形成装置211全体が筐体213(図8では、一点鎖線で示す)内に納められており、係る筐体213には開口部(図示せず)が設けられており、開口部を介してリレー光学系254から光が出射される。そして、各筐体213が、取付け部材19によって、着脱自在に、テンプル部13に取り付けられている。
第1面122A、及び、第1面122Aと対向した第2面122Bを有し、第1面122Aが第1基板121の第1面121Aと対向して配設された第2基板122、
第1基板121の第1面121Aに配された偏向手段523、
第1基板121の第1面121Aの外縁部と第2基板122の第1面122Aの外縁部を封止する封止部材124、並びに、
第1基板121と第2基板122と封止部材124とによって囲まれた空間内に配置された吸湿部材130、
を備えている。
第2基板122の第1面122Aの封止部材124の内側に沿った領域、又は、
第1基板121の第1面121Aの封止部材124の内側に沿った領域、又は、
第2基板122の第1面122Aの封止部材124の内側に沿った領域、及び、第1基板121の第1面121Aの封止部材124の内側に沿った領域、
に配置されていてもよい。吸湿部材130と封止部材124との間には、1μm以上、隙間が空いていることが望ましい。
t2≦10μm
t2<t1≦1mm
を満足することが好ましい。
第1面122A、及び、第1面122Aと対向した第2面122Bを有し、第1面122Aが第1基板121の第1面121Aと対向して配設された第2基板122、
第1基板121の第1面121Aに配された偏向手段533、
第1基板121の第1面121Aの外縁部と第2基板122の第1面122Aの外縁部を封止する封止部材124、並びに、
第1基板121と第2基板122と封止部材124とによって囲まれた空間内に配置された吸湿部材130、
を備えている。
第2基板122の第1面122Aの封止部材124の内側に沿った領域、又は、
第1基板121の第1面121Aの封止部材124の内側に沿った領域、又は、
第2基板122の第1面122Aの封止部材124の内側に沿った領域、及び、第1基板121の第1面121Aの封止部材124の内側に沿った領域、
に配置されていてもよい。吸湿部材130と封止部材124との間には、1μm以上、隙間が空いていることが望ましい。
t2≦10μm
t2<t1≦1mm
を満足することが好ましい。
第2基板122の第1面122Aの領域、又は、
第1基板121の第1面121Aの第1偏向手段141,341あるいは偏向手段523が配された領域以外の領域、又は、
第2基板122の第1面122Aの領域、及び、第1基板121の第1面121Aの第1偏向手段141,341あるいは偏向手段523が配された領域以外の領域、
に吸湿部材130が配置されている。尚、第1基板の第1基板の導光領域には吸湿部材130は配置されていない。
調光装置用第1基板701、
調光装置用第1基板701と対向する調光装置用第2基板703、
調光装置用第2基板703と対向する調光装置用第1基板701の対向面に設けられた第1透明電極702、
調光装置用第1基板701と対向する調光装置用第2基板703の対向面に設けられた第2透明電極704、及び、
第1透明電極702と第2透明電極704とによって挟まれた調光層705、
から成る。そして、
第1透明電極702は、第1の方向に延びる複数の帯状の第1透明電極セグメント702Aから構成されており、
第2透明電極704は、第1の方向とは異なる第2の方向に延びる複数の帯状の第2透明電極セグメント704Aから構成されており、
第1透明電極セグメント702Aと第2透明電極セグメント704Aの重複領域(調光装置の遮光率が変化する最小単位領域708)に対応する調光装置の部分の遮光率の制御は、第1透明電極セグメント702A及び第2透明電極セグメント704Aに印加する電圧の制御に基づき行われる。即ち、遮光率の制御を単純マトリクス方式に基づき行われる。第1の方向と第2の方向とは直交しており、具体的には、第1の方向は横方向(X軸方向)に延び、第2の方向は縦方向(Y軸方向)に延びる。
Ir(OH)n → IrOX(OH)n-X(着色) + X・H+ + X・e-
WO3 + X・H+ + X・e- → HXWO3(着色)
S2/S1<0.8、又は、1<S2/S1の場合、次の虚像が形成される調光装置700の虚像投影領域711は、調光装置700への次の虚像の投影像が含まれる調光装置700の領域であり(図26A、図26B及び図26C参照)、
0.8≦S2/S1≦1の場合、次の虚像が形成される調光装置700の虚像投影領域711は、調光装置700への一の虚像の投影像が含まれた調光装置700の領域である形態とすることができる。即ち、一の虚像の形成から次の虚像の形成において、虚像投影領域の面積が0%減乃至20%減の場合には、一の虚像に対応した虚像投影領域を保持する形態とすることができる(即ち、図26Aに示した状態のままとする)。
1.0≦L2-T/L1-T≦1.5
1.0≦L2-L/L1-L≦1.5
を満足することが好ましい。尚、図27においては、虚像として、「ABCD」が形成されている状態を示す。
第1偏向手段A(141A)を構成する反射型の体積ホログラム回折格子膜の内部には、第1Aの干渉縞が形成されており、
第1偏向手段B(141B)を構成する反射型の体積ホログラム回折格子膜の内部には、第1Bの干渉縞が形成されており、
第2偏向手段142を構成する反射型の体積ホログラム回折格子膜の内部には、第2の干渉縞が形成されており、
φ1A<φ2<φ1B、及び、P1A=P2=P1B
の関係を満足する形態とすることができる。ここで、
φ1A:第1Aの干渉縞のスラント角
φ1B:第1Bの干渉縞のスラント角
φ2 :第2の干渉縞のスラント角
P1A:第1Aの干渉縞のピッチ
P1B:第1Bの干渉縞のピッチ
P2 :第2の干渉縞のピッチ
である。
λ1A<λ2<λ1B
の関係を満足する形態とすることができる。
ここで、
λ1A:第1基板に入射され、第1偏向手段Aによって偏向される光のピーク波長
λ1B:第1基板に入射され、第1偏向手段Bによって偏向される光のピーク波長
λ2 :第1偏向手段A及び第1偏向手段Bによって偏向され、第1基板の内部を全反射により伝播し、第2偏向手段によって偏向される光のピーク波長
である。
[A01]《光学装置》
第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている光学装置。
[A02]吸湿部材は、第2基板の第1面に配置されている[A01]に記載の光学装置。
[A03]吸湿部材は、第2基板の第1面の全面に貼り合わされている[A02]に記載の光学装置。
[A04]吸湿部材は、第1基板の第1面の偏向手段が配された領域以外の領域に配置されている[A01]乃至[A03]のいずれか1項に記載の光学装置。
[A05]吸湿部材は、第2基板の第1面の封止部材の内側に沿った領域、又は、第1基板の第1面の封止部材の内側に沿った領域、又は、第2基板の第1面の封止部材の内側に沿った領域及び第1基板の第1面の封止部材の内側に沿った領域に配置されている[A01]に記載の光学装置。
[A06]偏向手段を覆うように、第2基板の第2面の外側に遮光部材が配置されている[A01]に記載の光学装置。
[A07]第2基板への偏向手段の正射影像は、第2基板への遮光部材の正射影像に含まれる[A06]に記載の光学装置。
[A08]第2基板への遮光部材の正射影像内の領域であって、第2基板の第1面の領域、又は、第1基板の第1面の偏向手段が配された領域以外の領域、又は、第2基板の第1面の領域及び第1基板の第1面の偏向手段が配された領域以外の領域に、吸湿部材が配置されている[A06]又は[A07]に記載の光学装置。
[A09]偏向手段は、吸水性を有する材料から成る[A01]乃至[A08]のいずれか1項に記載の光学装置。
[A10]偏向手段は、樹脂材料から成るホログラム回折格子膜から構成されている[A09]に記載の光学装置。
[A11]第2基板に面した偏向手段の面には保護膜が配されている[A09]又は[A10]に記載の光学装置。
[A12]吸湿部材と保護膜とは同じ材料から成る[A11]に記載の光学装置。
[A13]吸湿部材の厚さは保護膜の厚さよりも厚い[A12]に記載の光学装置。
[A14]偏向手段は、第1偏向手段及び第2偏向手段から構成されており、
第1偏向手段は、第1基板に入射された光が第1基板の内部で全反射されるように、第1基板に入射された光を偏向させ、
第2偏向手段は、第1基板の内部を全反射により伝播した光を第1基板から出射させるために、第1基板の内部を全反射により伝播した光を偏向させる[A01]に記載の光学装置。
[A15]吸湿部材は、第2基板の第1面に配置されている[A14]に記載の光学装置。
[A16]吸湿部材は、第2基板の第1面の全面に貼り合わされている[A15]に記載の光学装置。
[A17]吸湿部材は、第1基板の第1面の第1偏向手段及び第2偏向手段が配された領域以外の領域に配置されている[A14]乃至[A16]のいずれか1項に記載の光学装置。
[A18]吸湿部材は、第2基板の第1面の封止部材の内側に沿った領域、又は、第1基板の第1面の封止部材の内側に沿った領域、又は、第2基板の第1面の封止部材の内側に沿った領域及び第1基板の第1面の封止部材の内側に沿った領域に配置されている[A14]に記載の光学装置。
[A19]第1偏向手段を覆うように、第2基板の第2面の外側に遮光部材が配置されている[A14]に記載の光学装置。
[A20]第2基板への第1偏向手段の正射影像は、第2基板への遮光部材の正射影像に含まれる[A19]に記載の光学装置。
[A21]第2基板への遮光部材の正射影像内の領域であって、第2基板の第1面の領域、又は、第1基板の第1面の第1偏向手段が配された領域以外の領域、又は、第2基板の第1面の領域及び第1基板の第1面の第1偏向手段が配された領域以外の領域に、吸湿部材が配置されている[A19]又は[A20]に記載の光学装置。
[A22]第1偏向手段及び第2偏向手段の少なくとも一方は、吸水性を有する材料から成る[A14]乃至[A21]のいずれか1項に記載の光学装置。
[A23]第1偏向手段は、樹脂材料から成るホログラム回折格子膜から構成されており、
第2偏向手段は、樹脂材料から成るホログラム回折格子膜から構成されている[A22]に記載の光学装置。
[A24]第2基板に面した第1偏向手段の面及び第2偏向手段の面には保護膜が配されている[A14]乃至[A23]のいずれか1項に記載の光学装置。
[A25]吸湿部材と保護膜とは同じ材料から成る[A24]に記載の光学装置。
[A26]吸湿部材の厚さは保護膜の厚さよりも厚い[A25]に記載の光学装置。
[A27]吸湿部材の吸水率は、偏向手段を構成する材料の吸水率よりも高い[A01]乃至[A26]のいずれか1項に記載の光学装置。
[A28]吸湿部材は、ポリビニルアルコールから成る[A01]乃至[A27]のいずれか1項に記載の光学装置。
[A29]吸湿部材は、ナノポーラスシリカ、モレキュラシーブ、ゼオライト、活性炭、活性アルミナ、珪藻土、モンモリロナイト及びベントナイトから構成された群から選択された少なくとも1種類の材料から成る[A01]乃至[A27]のいずれか1項に記載の光学装置。
[A30]吸湿部材は、光透過率が50%以上の樹脂製フィルムから成る[A01]乃至[A27]のいずれか1項に記載の光学装置。
[A31]第1基板及び第2基板は、透明基板から成る[A01]乃至[A30]のいずれか1項に記載の光学装置。
[A32]第2基板の第2面側に調光装置が配されている[A01]乃至[A31]のいずれか1項に記載の光学装置。
[B01]光学装置は、画像形成装置から出射される光に基づき虚像が形成される虚像形成領域を有し、
光学装置の虚像形成領域は、調光装置と重なっており、
画像形成装置から出射される光に基づき、虚像形成領域の一部分において虚像が形成されるとき、調光装置への虚像の投影像が含まれる調光装置の虚像投影領域の遮光率が、調光装置の他の領域の遮光率よりも高くなるように、調光装置が制御される光学装置。
[B02]調光装置の動作時、調光装置の他の領域の遮光率は、調光装置への虚像の投影像が含まれる調光装置の虚像投影領域の遮光率を「1」としたとき、0.95以下である[B01]に記載の光学装置。
[B03]調光装置の動作時、調光装置の虚像投影領域の遮光率は、35%乃至99%である[B01]又は[B02]に記載の光学装置。
[B04]画像形成装置から出射された光に基づき光学装置に虚像が形成される前に、調光装置の虚像投影領域の遮光率が増加される[B01]乃至[B03]のいずれか1項に記載の光学装置。
[B05]画像形成装置から出射された光に基づき光学装置に一の虚像が形成され、次いで、一の虚像と異なる次の虚像が形成されるときであって、一の虚像に対応する調光装置の虚像投影領域の面積をS1、次の虚像に対応する調光装置の虚像投影領域の面積をS2としたとき、
S2/S1<0.8、又は、1<S2/S1の場合、次の虚像が形成される調光装置の虚像投影領域は、調光装置への次の虚像の投影像が含まれる調光装置の領域であり、
0.8≦S2/S1≦1の場合、次の虚像が形成される調光装置の虚像投影領域は、調光装置への一の虚像の投影像が含まれた調光装置の領域である[B01]乃至[B04]のいずれか1項に記載の光学装置。
[B06]光学装置に形成される虚像に外接する仮想矩形を想定したとき、調光装置の虚像投影領域は、仮想矩形よりも大きい[B01]乃至[B05]のいずれか1項に記載の光学装置。
[B07]光学装置に形成される虚像に外接する仮想矩形の横方向及び縦方向の長さをL1-T及びL1-Lとし、調光装置の虚像投影領域の形状を、横方向及び縦方向の長さがL2-T及びL2-Lの矩形形状としたとき、
1.0≦L2-T/L1-T≦1.5
1.0≦L2-L/L1-L≦1.5
を満足する[B06]に記載の光学装置。
[B08]調光装置は、
調光装置用第1基板、
調光装置用第1基板と対向する調光装置用第2基板、
調光装置用第2基板と対向する調光装置用第1基板の対向面に設けられた第1透明電極、
調光装置用第1基板と対向する調光装置用第2基板の対向面に設けられた第2透明電極、及び、
第1透明電極と第2透明電極とによって挟まれた調光層、
から成る[B01]乃至[B07]のいずれか1項に記載の光学装置。
[B09]第1透明電極は、第1の方向に延びる複数の帯状の第1透明電極セグメントから構成されており、
第2透明電極は、第1の方向とは異なる第2の方向に延びる複数の帯状の第2透明電極セグメントから構成されており、
第1透明電極セグメントと第2透明電極セグメントの重複領域に対応する調光装置の部分の遮光率の制御は、第1透明電極セグメント及び第2透明電極セグメントに印加する電圧の制御に基づき行われる[B08]に記載の光学装置。
[B10]光学装置の置かれた環境の照度を測定する環境照度測定センサを更に備えており、
環境照度測定センサの測定結果に基づき、調光装置の遮光率を制御する[B01]乃至[B09]のいずれか1項に記載の光学装置。
[B11]光学装置の置かれた環境の照度を測定する環境照度測定センサを更に備えており、
環境照度測定センサの測定結果に基づき、画像形成装置によって形成される画像の輝度を制御する[B01]乃至[B10]のいずれか1項に記載の光学装置。
[B12]外部環境から調光装置を透過した光に基づく照度を測定する透過光照度測定センサを更に備えており、
透過光照度測定センサの測定結果に基づき、調光装置の遮光率を制御する[B01]乃至[B11]のいずれか1項に記載の光学装置。
[B13]外部環境から調光装置を透過した光に基づく照度を測定する透過光照度測定センサを更に備えており、
透過光照度測定センサの測定結果に基づき、画像形成装置によって形成される画像の輝度を制御する[B01]乃至[B12]のいずれか1項に記載の光学装置。
[B14]透過光照度測定センサは、光学装置よりも観察者側に配置されている[B12]又は[B13]に記載の光学装置。
[B15]調光装置を通過する光は、調光装置によって所望の色に着色される[B01]乃至[B14]のいずれか1項に記載の光学装置。
[B16]調光装置によって着色される色は可変である[B15]に記載の光学装置。
[B17]調光装置によって着色される色は固定である[B15]に記載の光学装置。
[C01]《画像表示装置》
(A)画像形成装置、及び、
(B)画像形成装置から出射された光が入射され、出射される光学装置、
を備えた画像表示装置であって、
光学装置は、
第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている画像表示装置。
[D01]《表示装置》
(イ)観察者の頭部に装着されるフレーム、及び、
(ロ)フレームに取り付けられた画像表示装置、
を備えた表示装置であって、
画像表示装置は、
(A)画像形成装置、及び、
(B)画像形成装置から出射された光が入射され、出射される光学装置、
を備えており、
光学装置は、
第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている表示装置。
Claims (20)
- 第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている光学装置。 - 吸湿部材は、第2基板の第1面に配置されている請求項1に記載の光学装置。
- 吸湿部材は、第1基板の第1面の偏向手段が配された領域以外の領域に配置されている請求項1に記載の光学装置。
- 偏向手段は、吸水性を有する材料から成る請求項1に記載の光学装置。
- 第2基板に面した偏向手段の面には保護膜が配されている請求項1に記載の光学装置。
- 吸湿部材と保護膜とは同じ材料から成り、吸湿部材の厚さは保護膜の厚さよりも厚い請求項1に記載の光学装置。
- 偏向手段は、第1偏向手段及び第2偏向手段から構成されており、
第1偏向手段は、第1基板に入射された光が第1基板の内部で全反射されるように、第1基板に入射された光を偏向させ、
第2偏向手段は、第1基板の内部を全反射により伝播した光を第1基板から出射させるために、第1基板の内部を全反射により伝播した光を偏向させる請求項1に記載の光学装置。 - 吸湿部材は、第2基板の第1面に配置されている請求項7に記載の光学装置。
- 吸湿部材は、第1基板の第1面の第1偏向手段及び第2偏向手段が配された領域以外の領域に配置されている請求項7に記載の光学装置。
- 第1偏向手段を覆うように、第2基板の第2面の外側に遮光部材が配置されている請求項7に記載の光学装置。
- 第2基板への遮光部材の正射影像内の領域であって、第2基板の第1面の領域、又は、第1基板の第1面の第1偏向手段が配された領域以外の領域、又は、第2基板の第1面の領域及び第1基板の第1面の第1偏向手段が配された領域以外の領域に、吸湿部材が配置されている請求項7に記載の光学装置。
- 第1偏向手段及び第2偏向手段の少なくとも一方は、吸水性を有する材料から成る請求項7に記載の光学装置。
- 第1偏向手段は、樹脂材料から成るホログラム回折格子膜から構成されており、
第2偏向手段は、樹脂材料から成るホログラム回折格子膜から構成されている請求項12に記載の光学装置。 - 第2基板に面した第1偏向手段の面及び第2偏向手段の面には保護膜が配されている請求項7に記載の光学装置。
- 吸湿部材と保護膜とは同じ材料から成り、吸湿部材の厚さは保護膜の厚さよりも厚い請求項7に記載の光学装置。
- 吸湿部材の吸水率は、偏向手段を構成する材料の吸水率よりも高い請求項1に記載の光学装置。
- 吸湿部材は、ポリビニルアルコールから成る請求項1に記載の光学装置。
- 吸湿部材は、ナノポーラスシリカ、モレキュラシーブ、ゼオライト、活性炭、活性アルミナ、珪藻土、モンモリロナイト及びベントナイトから構成された群から選択された少なくとも1種類の材料から成る請求項1に記載の光学装置。
- (A)画像形成装置、及び、
(B)画像形成装置から出射された光が入射され、出射される光学装置、
を備えた画像表示装置であって、
光学装置は、
第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている画像表示装置。 - (イ)観察者の頭部に装着されるフレーム、及び、
(ロ)フレームに取り付けられた画像表示装置、
を備えた表示装置であって、
画像表示装置は、
(A)画像形成装置、及び、
(B)画像形成装置から出射された光が入射され、出射される光学装置、
を備えており、
光学装置は、
第1面、及び、第1面と対向した第2面を有する第1基板、
第1面、及び、第1面と対向した第2面を有し、第1面が第1基板の第1面と対向して配設された第2基板、
第1基板の第1面に配された偏向手段、
第1基板の第1面の外縁部と第2基板の第1面の外縁部を封止する封止部材、並びに、
第1基板と第2基板と封止部材とによって囲まれた空間内に配置された吸湿部材、
を備えている表示装置。
Priority Applications (3)
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JP2019184962A (ja) * | 2018-04-17 | 2019-10-24 | 株式会社Nttドコモ | コンテンツ表示装置、コンテンツ提供サーバー装置及びコンテンツ表示装置の調光制御方法 |
KR20200097408A (ko) * | 2019-02-08 | 2020-08-19 | 주식회사 피앤씨솔루션 | 2개의 조도센서를 이용한 머리 착용형 디스플레이 장치의 영상 최적화 방법 |
JP2021033047A (ja) * | 2019-08-23 | 2021-03-01 | 株式会社日立エルジーデータストレージ | 導光板、導光板の製造装置、導光板の製造方法、及び、それを用いた映像表示装置 |
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KR102084723B1 (ko) * | 2018-06-27 | 2020-03-04 | (주)비젼에이드 | 플라스틱 엘시디 셰이드를 구비한 증강현실 및 가상현실 겸용 스마트 글라스 디스플레이 장치 |
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JP2019184962A (ja) * | 2018-04-17 | 2019-10-24 | 株式会社Nttドコモ | コンテンツ表示装置、コンテンツ提供サーバー装置及びコンテンツ表示装置の調光制御方法 |
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JP2021033047A (ja) * | 2019-08-23 | 2021-03-01 | 株式会社日立エルジーデータストレージ | 導光板、導光板の製造装置、導光板の製造方法、及び、それを用いた映像表示装置 |
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US10746998B2 (en) | 2020-08-18 |
JP6848865B2 (ja) | 2021-03-24 |
CN107850787A (zh) | 2018-03-27 |
JPWO2017013971A1 (ja) | 2018-05-24 |
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