WO2012001891A1 - 光デバイス - Google Patents
光デバイス Download PDFInfo
- Publication number
- WO2012001891A1 WO2012001891A1 PCT/JP2011/003341 JP2011003341W WO2012001891A1 WO 2012001891 A1 WO2012001891 A1 WO 2012001891A1 JP 2011003341 W JP2011003341 W JP 2011003341W WO 2012001891 A1 WO2012001891 A1 WO 2012001891A1
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- WO
- WIPO (PCT)
- Prior art keywords
- temple
- secondary battery
- optical
- rear end
- optical device
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/24—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type involving temporal multiplexing, e.g. using sequentially activated left and right shutters
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C11/00—Non-optical adjuncts; Attachment thereof
- G02C11/10—Electronic devices other than hearing aids
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/30—Image reproducers
- H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
- H04N13/341—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using temporal multiplexing
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
- G02F1/294—Variable focal length devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2213/00—Details of stereoscopic systems
- H04N2213/008—Aspects relating to glasses for viewing stereoscopic images
Definitions
- the present invention relates to an optical device, and more specifically to a technique for improving the wearing feeling of an optical device with a built-in battery, which is mounted on a user's head.
- 3D glasses or 3D glasses viewing devices generally called 3D glasses (hereinafter simply referred to as viewing devices) that are compatible with the active method and those that are compatible with the passive method.
- the right-eye video and the left-eye video are alternately switched and displayed on a display device such as a television.
- a display device such as a television.
- the liquid crystal shutters and the like arranged in the left and right lens units are alternately opened and closed in synchronization with the switching of the image on the display device (see Patent Documents 1 and 2).
- the active method a display device having almost the same structure as the conventional display device is used. Then, the stereoscopic video can be viewed simply by converting the video data to be displayed on the display device into video data for stereoscopic video.
- the video for the right eye and the video for the left eye are simultaneously displayed on the display device for each line, and the video is distributed to the right eye and the left eye with a polarizing filter in the display device. Then, each distributed video is sent to the right eye and the left eye with dedicated glasses.
- the 3D image may not be normally viewed unless the image is viewed near the front of the display device.
- the video for the right eye and the video for the left eye are simultaneously displayed on one screen, the resolution is lowered. Therefore, when viewing on a home television, the active stereoscopic video viewing system is preferable for the user.
- the viewing device needs to include a liquid crystal light shutter and a power source for driving the same, and the weight and bulk of the viewing device are larger than those of normal glasses. For this reason, many users are dissatisfied with the wearing feeling of the viewing device.
- the mainstream is to use a small and lightweight coin-shaped primary battery as a driving power source.
- a laminated battery as a driving power source, which can be made thinner than a coin-type battery.
- a technology that includes an electroactive element made of liquid crystal in a spectacle lens and that can instantaneously switch the power (refractive power) or focus of the lens by adjusting the current applied to the electroactive element.
- an electroactive element made of liquid crystal in a spectacle lens and that can instantaneously switch the power (refractive power) or focus of the lens by adjusting the current applied to the electroactive element.
- so-called 3D glasses often have a built-in battery as a power source for driving the liquid crystal shutter.
- the power variable glasses are also planned to be implemented with a battery.
- these devices are mounted on the head so that the weight is supported by the nose and the ear, as in normal glasses. Therefore, when the weight is increased greatly by incorporating a liquid crystal shutter or a battery, the wearing feeling is remarkably deteriorated.
- an object of the present invention is to improve the wearing feeling of an optical device with a built-in battery that is worn on the head without reducing the weight so as to increase the frequency of battery replacement.
- the present invention relates to an optical element that is electrically operated so as to change a light transmission state, a driving circuit for the optical element, a power supply device for driving the optical element, a rim that supports the optical element, a front end portion, and a rear end.
- An optical device having an end, a temple connected to the rim and the front end, and a modern part formed at the rear end of the temple,
- the power supply is A secondary battery,
- the present invention relates to an optical device in which the secondary battery is provided near the rear end of the temple or in the modern part.
- the present invention includes an optical shutter for a right eye, an optical shutter for a left eye, a driving circuit for the both optical shutters, a power supply device for driving the optical shutters, a rim that supports the optical shutters, a front end portion, and a rear end portion.
- a glasses-like stereoscopic video viewing device comprising: a temple connected to the rim and a front end portion; and a modern portion formed at a rear end portion of the temple;
- the power supply is A cylindrical secondary battery;
- the present invention relates to a stereoscopic video viewing apparatus in which the secondary battery is provided near the rear end of the temple or in the modern part.
- the shape of the secondary battery used in the power supply device is, for example, a cylindrical shape or a rectangular tube shape, which is provided near the rear end of the temple or in the modern portion, so that the design property of the optical device is improved.
- the weight balance can be optimized without impairing the weight. By optimizing the weight balance, it is possible to improve the feeling of wearing the optical device without excessively reducing the weight of the battery.
- FIG. 1 is a perspective view illustrating an appearance of a stereoscopic video viewing apparatus as an optical device according to an embodiment of the present invention.
- FIG. 2 is a functional block diagram of the stereoscopic video viewing apparatus in FIG. 1. It is a perspective view which shows the external appearance of a secondary battery.
- FIG. 4 is an enlarged perspective view of a temple showing a schematic configuration of a power supply device and a storage section for a drive circuit. It is a figure which shows typically the state which looked at the lens used for the power variable spectacles as an optical device which concerns on other embodiment of this invention from the direction orthogonal to a light incident direction. It is a figure which shows typically the layered structure of the electroactive element used for power variable glasses same as the above.
- the present invention relates to an optical element that is electrically operated so as to change a light transmission state, a driving circuit for the optical element, a power supply device for driving the optical element, a rim that supports the optical element, a front end portion, and a rear end portion And an optical device including a temple connected to a rim at the front end portion and a modern portion formed at the rear end portion of the temple.
- the power supply device includes, for example, a cylindrical or rectangular secondary battery, and a charge / discharge circuit that controls charging and discharging of the secondary battery.
- the secondary battery of the power supply device is provided near the rear end of the temple or in the modern part.
- a glasses-like stereoscopic video viewing apparatus generally called 3D glasses or 3D glasses.
- a stereoscopic video viewing device (hereinafter also simply referred to as a viewing device) compatible with the active shutter system includes a liquid crystal optical shutter and a built-in power supply device for driving the liquid crystal optical shutter.
- the liquid crystal light shutter is heavier (for example, one piece is 7 to 20 g) than the plastic lens of a normal eyeglass (light one is 4 to 6 g).
- the heavy light shutter is arranged at the front. For this reason, the center of gravity is located in front of normal glasses. And in the conventional viewing-and-listening apparatus, the coin-type battery (primary battery) and laminated battery with a certain area are used for a power supply. For this reason, it is necessary to provide a storage unit having a certain area in the viewing device.
- Such a storage portion is often arranged on the wide portion 50 by providing a wide portion 50 on the front side of the temple 22 for design reasons as indicated by a two-dot chain line in FIG. Accordingly, the weight balance of the viewing device is increasingly biased forward.
- the present invention uses, for example, a cylindrical or prismatic secondary battery for the power supply device, so that the battery storage portion is provided near the rear end of the temple or in the modern portion without sacrificing the design. Making it possible.
- the center of gravity of the viewing device moves backward, the viewing device can be effectively supported not only by the nose but also by the ear. Therefore, since the load is dispersed, the wearing feeling is improved.
- the viewing device is caught in the ear, a slippage is also suppressed. Therefore, the feeling of wearing is dramatically improved.
- optical devices such as so-called 3D glasses, but is generally applied to a head (or face) -mounted optical device having an optical element that is electrically actuated to change the light transmission state. That is true.
- Such optical devices often include a secondary battery as a power source for driving the optical element. Therefore, there is a common problem that the built-in secondary battery has a good wearing feeling without excessively reducing the weight.
- the distance L2 along the direction in which the temple extends from the front end of the temple to the center of gravity G of the entire optical device is the distance L1 along the direction in which the temple extends from the front end of the temple to the rear end of the modern part.
- a position of 15 to 50% is preferable in order to improve the wearing feeling.
- a more preferred range is 20 to 35%.
- a cylindrical or rectangular tube battery generally includes a metal can case. Moreover, since it has a shape that is strong against internal pressure rise, it can accommodate a large amount of material even in a small volume. Furthermore, since it is highly resistant to external forces, it is suitable for being incorporated in a portion of an optical device that is easily bent, such as a temple or a modern part.
- the square tube shape includes a case where the cross section is oval, and a case where the cross section has a pair of parallel straight portions and both side portions of the cross section are arcuate.
- the width of the rectangular tube-shaped secondary battery referred to here is the major axis of the cross section.
- the drive circuit or the charge / discharge circuit is provided near the rear end of the temple or in the modern part.
- the weight of the viewing device that tends to concentrate forward can be further distributed to the rear. Therefore, it is possible to further improve the wearing feeling.
- the right and left weight balance can be made appropriate by distributing each part of the drive circuit and the power supply device to the left and right temples (for example, the power supply device is arranged on the right side and the drive circuit is arranged on the left side). It is. This further improves the feeling of wearing.
- the stereoscopic video viewing apparatus there is a hollow portion near the rear end of the temple or in the modern portion, and the secondary battery is accommodated in the hollow portion.
- the secondary battery since the secondary battery is built in the temple or modern part, the secondary battery can be provided near the rear end of the temple or in the modern part without making the user aware of the presence of the secondary battery. It becomes possible. At this time, if the temple or the modern part is made of resin, the secondary battery can be incorporated in those parts by insert molding. Thereby, the freedom degree of design of a viewing-and-listening apparatus can be expanded further.
- an example of the optical element of the present invention is a liquid crystal light shutter for viewing 3D video.
- the drive circuit drives the liquid crystal optical shutter in synchronization with switching between two systems of images that are alternately displayed by an external image display device, that is, a right-eye image and a left-eye image.
- the optical element of the present invention includes an electroactive material that changes its refractive index when activated by applying a voltage of a predetermined value or more.
- the drive circuit activates the electroactive material by applying a voltage equal to or higher than the predetermined value to the electroactive material under a predetermined condition.
- the predetermined condition is, for example, an instruction from a user's button operation or an instruction from a detection unit that detects a predetermined operation of the user (for example, an operation of tilting the head down).
- the electroactive material for example, a cholesteric liquid crystal material can be used.
- FIG. 1 is a perspective view showing a stereoscopic video viewing apparatus as an optical device according to Embodiment 1 of the present invention.
- FIG. 2 shows a functional block diagram of the stereoscopic video viewing apparatus.
- a stereoscopic video viewing device (hereinafter referred to as a viewing device) 10 is a glasses-like viewing device compatible with an active shutter type stereoscopic video viewing system.
- An active shutter type stereoscopic video viewing system is a display device such as a 3D television, which alternately displays a right-eye video and a left-eye video at high speeds and displays the video on the display device on the viewing device 10.
- stereoscopic images are viewed by alternately opening and closing optical shutters in synchronization with switching.
- a drive circuit 14 is connected to electrodes (not shown) of the optical shutter 12 for right eye and left eye, and a power supply device 16 for driving the optical shutter 12 is connected to the drive circuit 14.
- the power supply device 16 includes a secondary battery 15 and a charge / discharge circuit 30 that controls charging and discharging of the secondary battery 15.
- a charge / discharge circuit 30 is connected to the drive circuit 14.
- the charge / discharge circuit 30 is connected to the secondary battery 15 and is configured to be connectable to an external power source 32 such as a commercial power source.
- Each optical shutter 12 is held by a pair of rims 18 respectively.
- the pair of rims 18 are connected to each other at the inner end by a bridge 20.
- the front end portion of the temple 22 is connected to the outer end portion of each rim 18 by a hinge 24 so as to be swingable.
- a modern portion 26 is formed at the rear end portion of the temple 22.
- a nose pad 28 is formed in the vicinity of the bridge 20 of each rim 18.
- a pair of rims 18, a bridge 20, a temple 22, a hinge 24, a modern portion 26 and a nose pad 28 constitute the frame 1.
- a synchronization signal indicating the opening / closing timing of the optical shutter 12 is transmitted from a display device (3D television or the like) (not shown), and the bridge 20 is provided with a reception unit (not shown) for receiving the synchronization signal. ing.
- the synchronization signal received by the receiving unit is sent to the drive circuit 14.
- liquid crystal optical shutter operates to be transparent when a voltage is applied and to be opaque when the applied voltage is removed.
- FIG. 3 is a perspective view showing the external appearance of the secondary battery.
- the secondary battery 15 has an elongated shape with an outer diameter or width D of 2 to 6 mm and a length L of 15 to 35 mm.
- the secondary battery 15 is preferably a non-aqueous electrolyte secondary battery, particularly a lithium ion secondary battery, in terms of high energy density.
- the secondary battery 15 is not limited to the cylindrical shape as shown in the figure, and secondary batteries having various shapes such as a rectangular tube shape can be used.
- a cylindrical or rectangular tube battery generally includes a metal can case.
- the term square tube shape is a shape corresponding to a rectangular battery in the battery field, and the tube portion only needs to have at least a pair of parallel planar portions.
- a flat and thin shape with rounded sides is also included in the rectangular tube shape.
- the width of the rectangular tube-shaped secondary battery refers to the larger width when there is a large or small width.
- the secondary battery 15 can be disposed near the rear end of the temple 22 or in the modern part 26 without sacrificing the design. .
- the reason why the outer diameter D of the secondary battery 15 is set to 6 mm or less is that it is easier to dispose at the rear part of the viewing device and the design is less likely to be impaired than when the outer diameter D is larger than this. It is.
- the capacity of the secondary battery 15 can be set to 10 to 100 mAh, for example.
- the drive circuit 14 is disposed near the rear end portion of the temple 22 on the right side (the back side in the drawing), and the power supply device 16 is disposed on the left side (the near side in the drawing). ) Near the rear end of the temple 22.
- the arrangement of the members is not limited to this, and at least one or all of the parts constituting the power supply device 16 and the drive circuit 14 can be arranged in the left and right modern parts 26.
- the secondary battery disposed near the rear end of the left temple 22 is further disposed in the rear modern portion 26 in order to balance the left and right weight with the relatively heavy drive circuit 14. It is also possible. In order to shift the weight balance as close to the rear as possible, all members constituting the power supply device 16 and the drive circuit 14 may be disposed in the modern portion 26.
- the drive circuit 14 and the power supply device 16 are disposed near the rear end of the temple 22 or the modern section 26, and a part (for example, the charge / discharge circuit 30) is disposed near the front end of the temple 22.
- a part for example, the charge / discharge circuit 30
- it may be provided on the rim 18.
- the secondary battery 15 and the drive circuit 14 are relatively heavy, they are preferably provided near the rear end of the temple 22 or in the modern portion 26.
- the center of gravity G of the viewing device 10 is defined with the distance from the front end of the temple 22 (for example, the center point of the axis of the hinge 24) to the tip of the modern portion 26 (the distance along the direction in which the temple extends) being 100%.
- the drive circuit 14 and each part of the power supply device 16 are preferably arranged so that the position is 15 to 50% from the front end of the temple 22. If the center of gravity of the viewing device 10 is in the above range, the wearing feeling of the viewing device 10 is good as shown in a later embodiment.
- FIG. 4 shows an example of a storage unit that stores the drive circuit and the power supply device.
- the storage part 34 is formed from a hollow part provided in each of the right and left temples 22, and stores the drive circuit 14 and the power supply device 16 in the temple 22.
- the storage portion 34 can be provided with a lid that can be opened and closed.
- the shape of the storage portion 34 is not limited to a square shape as shown in the drawing, and may be a cylindrical shape or the like as long as the cross section of the temple 22 is rounded.
- the size of the storage unit 34 is appropriately set according to the size of the storage object. Further, the storage part 34 may be provided in the modern part 26.
- each part of the drive circuit 14 and the power supply device 16 in particular, the secondary battery 15 that is relatively difficult to reduce in size is attached to the temple 22.
- it can be built in the modern part 26 and can be stored without making the user aware of its presence. Thereby, the width of the design of the viewing device 10 is expanded, and it is easy to improve the appearance.
- the power supply device 16 uses the secondary battery 15 instead of the conventional primary battery, the need for battery replacement is small. Therefore, if the temple 22 or the modern part 26 is made of resin, the power supply device 16 and the drive circuit 14 may be embedded in the temple 22 or the modern part 26 by insert molding. Thereby, the design freedom of the viewing device can be further expanded.
- FIG. 5 is a device in which a lens used in a power variable glasses as an optical device according to Embodiment 2 is viewed from a direction orthogonal to the incident direction of light.
- the appearance of the variable power glasses itself is similar to that of the viewing apparatus of FIG. Therefore, similar parts will be described using the reference numerals in FIG. Further, the ratio of the thickness and the like of each member shown in FIG. 5 is changed from the actual one in consideration of visibility.
- the illustrated lens 50 includes a base lens 50a and a flat electroactive element 51 embedded in the base lens 50a.
- the base lens 50a for example, a normal optical lens (concave lens) for correcting myopia can be used.
- the electroactive element 51 is a device having a refractive index that can be changed by application of electrical energy.
- the electroactive element 51 is in optical communication with the base lens 50a.
- Such a lens 50 can be attached to the frame 1 (more specifically, the rim 18) of FIG.
- the electroactive element 51 can also be attached to the surface instead of the inside of the base lens 50a.
- the electroactive element 51 can be arranged in the entire field of view of the lens 50 or only in a part thereof.
- FIG. 5 a case where the electroactive element 51 is arranged in the entire field of view of the lens 50 is shown by a two-dot chain line.
- the electroactive element 51 can have a planar shape as shown in the figure, or can be curved along the curved surface of the lens. Further, the electroactive element 51 can be disposed on both of the pair of lenses 50, or can be disposed on only one side. Further, the number of electroactive elements 51 arranged in one lens 50 is not limited to one. Two or more electroactive elements 51 can be arranged in one lens 50.
- the lens 50 is simply a transparent body having no refractive power for correcting myopia or correcting for hyperopia, and one lens 50 includes an electroactive element 51 that exhibits refractive power for correcting myopia when activated, and when activated. It is also possible to dispose both the electroactive element 51 exhibiting refractive power for hyperopia correction.
- the position where the electroactive element 51 is arranged in the lens 50 is not particularly limited.
- the electroactive element 51 can be disposed at a position overlapping the line of sight, that is, at the center of the lower portion of the lens 50.
- FIG. 6 shows a cross-sectional view of an example of an electroactive element.
- the ratio of the thickness and width of the electroactive element 51 and the ratio of the thickness of each layer do not reflect the actual.
- the electroactive element 51 is mainly enlarged in the thickness direction.
- the illustrated electroactive element 51 includes two transparent substrates 52 and an electroactive material 53 made of a thin layer of a liquid crystal material disposed therebetween.
- the substrate 52 is shaped to ensure that the electroactive material 53 is contained between the substrates and cannot leak out.
- the thickness of the substrate 52 is, for example, more than 100 ⁇ m and less than 1 mm, and preferably on the order of 250 ⁇ m.
- the thickness of the electroactive material 53 can be, for example, less than 100 ⁇ m, and preferably less than 10 ⁇ m.
- a part of the base lens 50a can be formed by one of the two substrates 52.
- one substrate 52 can be substantially thicker than the other.
- the substrate forming part of the base lens 50a can be on the order of 1 mm to 12 mm thick.
- the thickness of the other substrate 52 can be more than 100 ⁇ m and less than 1 mm, but can preferably be on the order of 250 ⁇ m.
- the two substrates 52 can have the same refractive index.
- the electroactive material 53 can include a liquid crystal. Liquid crystals are particularly suitable for electroactive materials 53 because they have a refractive index that can be changed by generating an electric field across the liquid crystals.
- the liquid crystal material is preferably insensitive to polarization.
- a cholesteric liquid crystal material can be preferably used as the liquid crystal material.
- the cholesteric liquid crystal material can include a nematic liquid crystal having a birefringence of about 0.2 or higher.
- the cholesteric liquid crystal material may further include a chiral dopant having a helical twist force having a size of about 1.1 ( ⁇ m ⁇ 1 ) or more.
- the electroactive material 53 can have an average refractive index approximately equal to the refractive index described above.
- the electrode 54 is disposed on the surface of each substrate 52 that contacts the electroactive material 53. In an activated state where a voltage is applied to the electroactive material 53 by the electrode 54, the refractive index of the electroactive material 53 changes, thereby changing the optical properties of the electroactive material 53 such as its focal length or diffraction efficiency.
- the electrode 54 may be, for example, any known transparent conductive oxide (for example, ITO (Indium Tin Oxide): indium tin oxide (tin-doped indium oxide)), or a conductive organic material (for example, PEDOT: PSS (Poly (3 , 4-ethylenedioxythiophene) poly (styrenesulfonate)), or carbon nanotubes).
- the thickness of the electrode 54 can be, for example, less than 1 ⁇ m, but is preferably less than 0.1 ⁇ m.
- the electroactive element 51 is capable of switching between the first refractive index and the second refractive index, and is in the inactivated state where the applied voltage is less than the first predetermined value E1. And having a second refractive power in an activated state where the applied voltage exceeds a second predetermined voltage E2 (E2> E1).
- the electroactive element 51 can be configured so as not to substantially give a refractive index power.
- the electroactive material 53 has a refractive index that is substantially the same as the refractive index of the substrate 52. Can have.
- the refractive index of the electroactive element 51 is substantially constant over its thickness, and the refractive index does not change.
- the active element 51 can be in an activated state that provides an increase in refractive index.
- the cholesteric liquid crystal material can have a refractive index different from the refractive index of the substrate 52.
- the electroactive element 51 when the user is engaged in a long-distance job such as driving a car, the electroactive element 51 is deactivated, thereby providing the user with an appropriate long-distance correction by the base lens 50a.
- the electroactive element 51 can be activated, thereby providing the user with appropriate short range correction.
- the cholesteric liquid crystal material included in the electroactive material 53 is essentially in a cholesteric state (that is, chiral or twisted), or is formed by mixing nematic liquid crystal with a chiral twisting agent.
- the resulting cholesteric liquid crystal has many characteristics that are the same as the original nematic liquid crystal.
- the resulting cholesteric liquid crystal material can have the same refractive index dispersion.
- the obtained cholesteric liquid crystal material has the same ordinary refractive index and extraordinary refractive index as the original nematic liquid crystal. Since the nematic material is more commercially available than cholesteric liquid crystals, the latter approach is preferred and provides greater design flexibility.
- the variable power glasses may include a drive circuit for applying a predetermined voltage to each electrode 54.
- the drive circuit is a drive circuit similar to the drive circuit 14 of the first embodiment, and a detection result obtained by detecting a user's predetermined operation (for example, an operation of tilting the head down) according to a user's button operation or the like. In response to this, it is possible to operate so as to apply a predetermined voltage to each electrode 54.
- a drive circuit can be provided in the temple 22 or the modern part 26 in the same arrangement as the drive circuit 14 of the first embodiment.
- the power conversion glasses may further include a power supply device connected to the drive circuit so that the electroactive element 51 can be controlled.
- the power supply device has the same configuration as the power supply device 16 of FIG. 2 and operates in the same manner.
- Such a power supply device can be provided in the temple 22 or the modern portion 26 in the same arrangement as the power supply device 16.
- Example 1 A lens-like glass (7 g per sheet) having a weight corresponding to a liquid crystal light shutter was prepared.
- a resin composition having a weight of 3 g was prepared. The resin composition was adjusted in weight by including an appropriate metal material in the hard resin.
- the length of the temple is about 10 cm
- the width (height) is about 7 mm
- the length of the modern part is about 3.8 cm
- the width (maximum value) is about 7.3 mm
- the total length of the temple and the modern part (the axis of the hinge)
- a resin spectacle frame having a linear distance between the central point of the lens and the tip of the modern part (approximately 13.5 cm) and a weight of 32 g was prepared.
- a lens-shaped glass is inserted into the rim of the spectacle frame, and a resin composition (hereinafter referred to as a resin piece B) instead of the secondary battery and the charge / discharge circuit is combined, and the outer surface near the rear end of the left temple. Taped to. And the resin composition (henceforth the resin piece C) instead of a drive circuit was fastened with the tape on the outer surface near the rear end part of the right temple.
- a resin piece B a resin composition
- the resin piece C instead of a drive circuit was fastened with the tape on the outer surface near the rear end part of the right temple.
- the position of the center of gravity of the united product of the secondary battery and the resin piece B and the resin piece C was 8 cm from the front end of the temple (the hinge axis), respectively.
- the front and rear positions of the spectacles were determined by searching for a point where the front side and the rear side of the spectacles were balanced.
- the position of the obtained center of gravity was 2.7 cm from the front end portion of the temple, which was 20% of the total length of the temple and the modern portion.
- Example 2 The center of gravity of the glasses is the same as that of Example 1 except that the position of the center of gravity of the combined body of the secondary battery and the resin piece B and the position of the resin piece C is 9.5 cm from the front end of the temple. The position in the front-rear direction was obtained. The position of the obtained center of gravity was 3.4 cm from the front end of the temple, which was 25% of the total length of the temple and the modern part.
- Example 3 The center of gravity of the secondary battery and the resin piece B, and the position of the center of gravity of the resin piece C were respectively set to 11 cm from the front end portion of the temple in the same manner as in Example 1 before and after the center of gravity of the glasses. The direction position was determined. The position of the calculated center of gravity was 4.1 cm from the front end of the temple, which was 30% of the total length of the temple and the modern part.
- Example 4 The same as in Example 1 except that the position of the center of gravity of the combined body of the secondary battery and the resin piece B and the resin piece C is 12 cm from the front end of the temple (the axis of the hinge). The position in the front-rear direction of the center of gravity of the glasses was obtained. The position of the calculated center of gravity was 4.7 cm from the front end of the temple, and was 35% of the total length of the temple and the modern part.
- the wearing feeling of the five types of glasses of Examples 1 to 4 and Comparative Example 1 was tested by 10 testers. In the test, you have to choose between two choices as to whether or not the wearing feeling is good when you watch a normal TV program for 2 hours with one of five types of eyeglasses, and describe a simple impression I was asked to do it.
- the wearing feeling was investigated for one type of eyeglasses per day, and 10 testers conducted a 5-day test for each of five types of eyeglasses.
- the order of the glasses worn by each tester was random for each tester so that the tester did not realize that the test was particularly about the position of the center of gravity.
- the results are shown in Table 1. The numbers in the table are the number of testers who answered that the eyeglasses were wearing well.
- Example 1 In Example 1, one person mentioned the gap in the viewing device, but the majority of the testers gave the wearing feeling “good”. In Examples 2 to 4, there was no tester that mentioned the gap in the viewing device. In Example 4, there are six testers who made the wearing feeling “good”, and the number thereof is smaller than that in Example 3. This result seems to be because there was a tester who felt uncomfortable at that point because the center of gravity was behind the weight balance of normal glasses (usually about 15 to 30%).
- the weight balance of the optical device is easily optimized, so the wearing feeling of the active shutter type stereoscopic video viewing device and the variable power glasses is dramatically improved. Can be made.
- the optical device of the present invention has a good wearing feeling, in the form of so-called 3D glasses, it is possible to view 3D video for a long time in a movie theater or 3D video at home including a small child by 3D TV. Useful for viewing.
- the benefit to the user that the feeling of wearing is good is even greater.
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Acoustics & Sound (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Eyeglasses (AREA)
- Stereoscopic And Panoramic Photography (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Description
前記電源装置が、
二次電池と、
前記二次電池の充電及び放電を制御する充放電回路と、を含み、
前記二次電池が、前記テンプルの後端部寄り、または前記モダン部に設けられている、光デバイスに関する。
例えば、本発明は、右目用光シャッター、左目用光シャッター、前記両光シャッターの駆動回路、前記両光シャッターの駆動用電源装置、前記両光シャッターを支持するリム、前端部及び後端部を有するとともに、前記リムと前端部で接続されたテンプル、及び前記テンプルの後端部に形成されたモダン部、を備える、眼鏡状の立体映像視聴装置であって、
前記電源装置が、
円筒状の二次電池と、
前記二次電池の充電及び放電を制御する充放電回路と、を含み、
前記二次電池が、前記テンプルの後端部寄り、または前記モダン部に設けられている、立体映像視聴装置に関する。
これにより、前方に集中しやすい視聴装置の重量を、さらに後方に分散することができる。よって、さらに装着感を向上させることが可能となる。このとき、駆動回路及び電源装置の各部を左右のテンプルに分散する(例えば、右側に電源装置を配置し、左側に駆動回路を配置する)ことで、左右の重量バランスを適切化することも可能である。これにより、さらに装着感は良好となる。
(実施形態1)
図1に、本発明の実施形態1に係る光デバイスとしての立体映像視聴装置を斜視図により示す。図2に、立体映像視聴装置の機能ブロック図を示す。
立体映像視聴装置(以下、視聴装置という)10は、アクティブ・シャッター方式の立体映像視聴システムに対応した、眼鏡状の視聴装置である。
駆動回路14を構成する各部の少なくとも1つまたは全部を左右のモダン部26に配置することも可能である。
(実施形態2)
図5に、実施形態2に係る光デバイスとしての度数可変眼鏡に使用されるレンズを光の入射方向に直交する方向から見たデバイス。度数可変眼鏡自体の外観は、図1の視聴装置と類似している。よって、類似する部分については、図1の符号を流用して説明する。また、図5に示された各部材の厚み等の比率は、視認性を考慮して、実際のものから変えられている。
(実施例1)
液晶光シャッターに相当する重量のレンズ状のガラス(1枚あたり7g)を準備した。径が3.5mm、長さが35mm、重量が0.8g、電池容量が40mAhのリチウムイオン二次電池を準備した。充放電回路に相当する、28.0×3.0×1.2mm、重さ0.15gの樹脂組成物を準備するとともに、駆動回路に相当する、5.0×80.0×3.0mm、重さ3gの樹脂組成物を準備した。樹脂組成物は、硬質樹脂に適宜の金属材料を含ませて重量を調節した。
二次電池と樹脂片Bとの合体物、並びに樹脂片Cの重心の位置を、それぞれ、テンプルの前端部から9.5cmの位置としたこと以外は実施例1と同様にして、眼鏡の重心の前後方向の位置を求めた。求められた重心の位置は、テンプルの前端部から3.4cmの位置であり、テンプルとモダン部の合計長の25%の位置であった。
二次電池と樹脂片Bとの合体物、並びに樹脂片Cの重心の位置を、それぞれ、テンプルの前端部から11cmの位置としたこと以外は実施例1と同様にして、眼鏡の重心の前後方向の位置を求めた。求められた重心の位置は、テンプルの前端部から4.1cmの位置であり、テンプルとモダン部の合計長さの30%の位置であった。
二次電池と樹脂片Bとの合体物、並びに樹脂片Cの重心の位置を、それぞれ、テンプルの前端部(ヒンジの軸心)から12cmの位置としたこと以外は実施例1と同様にして、眼鏡の重心の前後方向の位置を求めた。求められた重心の位置は、テンプルの前端部から4.7cmの位置であり、テンプルとモダン部の合計長さの35%の位置であった。
二次電池と樹脂片Bとの合体物、並びに樹脂片Cの重心の位置を、それぞれ、テンプルの前端部から5cmの位置としたこと以外は実施例1と同様にして、眼鏡の重心の前後方向の位置を求めた。求められた重心の位置は、テンプルの前端部から1.8cmの位置であり、テンプルとモダン部の合計長さの13%の位置であった。
12 光シャッター、
14 駆動回路、
16 電源装置、
22 テンプル、
26 モダン部、
28 二次電池、
30 充放電回路、
34 収納部
50 レンズ
51 電気活性素子
Claims (9)
- 光の透過状態を可変にするように電気的に作動する光学要素、前記光学要素の駆動回路、前記光学要素の駆動用電源装置、前記光学要素を支持するリム、前端部及び後端部を有するとともに、前記リムと前端部で接続されたテンプル、及び前記テンプルの後端部に形成されたモダン部、を備える光デバイスであって、
前記電源装置が、
二次電池と、
前記二次電池の充電及び放電を制御する充放電回路と、を含み、
前記二次電池が、前記テンプルの後端部寄り、または前記モダン部に設けられている、光デバイス。 - 前記テンプルの前端部から重心までの前記テンプルが延びる方向に沿った距離が、前記テンプルの前端部から前記モダン部の後端部までの前記テンプルが延びる方向に沿った距離の15~50%である、請求項1記載の光デバイス。
- 前記二次電池が、円筒状または角筒状の二次電池である、請求項1または2記載の光デバイス。
- 前記二次電池の径または幅が2~6mmである、請求項3記載の光デバイス。
- さらに、前記駆動回路または前記充放電回路の少なくとも一部が、前記テンプルの後端部寄り、または前記モダン部に設けられている、請求項1~4のいずれか1項に記載の光デバイス。
- 前記テンプルの後端部寄り、または前記モダン部に中空部があり、前記中空部に前記二次電池が収納されている、請求項1~5のいずれか1項に記載の光デバイス。
- 前記テンプルまたは前記モダン部が樹脂から構成され、前記二次電池がインサート成形により前記テンプルの後端部寄り、または前記モダン部と一体的に設けられている、請求項6記載の光デバイス。
- 前記光学要素が液晶光シャッターであり、前記駆動回路が、外部の映像表示装置により交互に表示される2系統の映像の切替に同期して、前記液晶光シャッターを駆動する、請求項1~7のいずれか1項に記載の光デバイス。
- 前記光学要素が、所定値以上の電圧の印加により活性化して屈折率が変化する電気活性材料を含み、前記駆動回路は、前記電気活性材料に前記所定値以上の電圧を印加して、前記電気活性材料を活性化させる、請求項1~7のいずれか1項に記載の光デバイス。
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US13/700,964 US9256077B2 (en) | 2010-06-30 | 2011-06-13 | Optical device |
KR1020127029788A KR101364942B1 (ko) | 2010-06-30 | 2011-06-13 | 광 디바이스 |
JP2012522441A JP5436668B2 (ja) | 2010-06-30 | 2011-06-13 | 光デバイス |
CN2011800244763A CN102893619A (zh) | 2010-06-30 | 2011-06-13 | 光学设备 |
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JP2014137597A (ja) * | 2013-01-18 | 2014-07-28 | Otos Wing Co Ltd | 有害閃光遮断と防眩用の電子保護眼鏡 |
JP2016076475A (ja) * | 2014-08-06 | 2016-05-12 | 株式会社半導体エネルギー研究所 | 二次電池を有する電子機器及び眼鏡型デバイス |
JP2020027271A (ja) * | 2018-08-10 | 2020-02-20 | 株式会社リコー | メガネ型デバイス及びその充電器 |
CN114649835A (zh) * | 2020-12-17 | 2022-06-21 | 东莞宇龙通信科技有限公司 | 一种智能眼镜和外置电池 |
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KR20130008610A (ko) | 2013-01-22 |
KR101364942B1 (ko) | 2014-02-19 |
CN102893619A (zh) | 2013-01-23 |
US9256077B2 (en) | 2016-02-09 |
JPWO2012001891A1 (ja) | 2013-08-22 |
JP5436668B2 (ja) | 2014-03-05 |
US20130076998A1 (en) | 2013-03-28 |
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