Abstract: An observation window is provided for use with a spray booth during a spray coating process where the observation window is located in a position to permit an operator to observe the spray coating process. The observation window is controlled to provide light transmission in the window suitable for the specific spray process being performed. The control can be automatic or operator controlled. The window is adapted to have a different light transmission during different spray processes such as plasma spray and HVOF spray.

Abstract: A display apparatus for reducing an afterimage and a driving method thereof are provided. The display apparatus includes a video processor which divides and outputs each of frames constituting the left-eye image and the right-eye image into a plurality of sub-frames which have different sustaining times when the left-eye image and the right-eye image are input; a display unit which displays an image based on the divided sub-frames; and a controller which prevents recognition of at least one sub-frame among the plurality of sub-frames on the basis of the sustaining times of the plurality of sub-frames, thus presenting a clear image.

Abstract: An apparatus for viewing stereoscopic images may include, but is not limited to: a first viewing lens including a first polarization layer; a second viewing lens including a second polarization layer; and one or more birefringence compensation layers. Further, the apparatus may be viewing glasses including a frame wearable by a user.

Abstract: A head-mounted display apparatus includes a head-mounted display, the head-mounted display including a plurality of independently controllable switchable viewing areas that can each be independently switched between a transparent state and an information state. The transparent state enables a user of the head-mounted display to see the scene outside the head-mounted display through the independently controllable switchable viewing areas. The information state is opaque and displays information in the independently controllable switchable viewing areas visible to a user of the head-mounted display. Circuitry produces a control signal for controlling the states of the independently controllable switchable viewing areas and a controller responsive to the control signal independently switches each of the independently controllable viewing areas between the transparent state and the information state.

Abstract: The present invention discloses shutter glasses and a 3D display system. The shutter glasses include a first polarizer, a second polarizer, a normally-white LCD panel, and a normally-black LCD panel. A thickness of the normally-white LCD panel is not the same as a thickness of the normally-black LCD panel, and an optical compensation film is installed between the first polarizer and the liquid crystal layer of the normally-black LCD panel and/or between the second polarizer and the liquid crystal layer of the normally-black LCD panel in order to compensate for a dispersion occurred when the liquid crystal layer of the normally-black LCD panel is in a dark mode. In this way, the present invention can not only shorten the response time of the shutter glasses to reduce the power consumption, but also reduce the 3D crosstalk.

Abstract: A projection display system includes a glasses system, a driving unit and a projection apparatus. The driving unit is electrically connected to the glasses system for repeatedly applying or removing a voltage to/from the glasses system. The projection apparatus includes an illumination system and a color wheel. The color wheel is in a transmission path of a light beam provided by the illumination system. The color wheel has a compensation zone and a plurality of color zones. When the color wheel is rotated, the compensation zone and the color zones sequentially pass through the light beam. The compensation zone has first, second and third sub compensation zones. A time for the first sub compensation zone passing through the light beam is substantially equal to a time for the third sub compensation zone passing through the light beam. A liquid crystal glasses and a control method are also provided.

Abstract: An attachable/detachable covering lens for covering eyeglass lenses is disclosed. A transparent optical material is suitably shaped to cover at least a portion of an eyeglass lens. The transparent optical material is coupled to the eyeglass lens by adhering means. The adhering means may comprise a viscosity of the transparent optical material. Embodiments of the disclosure provide mechanisms to easily provide attachable/detachable temporary lenses such as a sun-shield, temporary eyesight correction to the prescription lenses for applications such as reading, watching TV, or 3-D movie viewing. Embodiments of the disclosure also provide mechanisms for providing an easily attachable/detachable temporary prescription lens over special purpose glasses.

Abstract: A light deflecting apparatus includes first and second light deflecting liquid crystal cells, each corresponding to each eye of a user and each comprising a liquid crystal layer including liquid crystal molecules with positive dielectric anisotropy and exhibiting a cholesteric blue phase when no voltage is applied, a pair of transparent substrates sandwiching the liquid crystal layer, a pair of transparent electrodes each being formed above each transparent substrate, a prism layer formed above one of the transparent substrates, and a driving device switching between a first state wherein the first and the second light deflecting liquid crystal cells are respectively in a homeotropic phase and a cholesteric blue phase, and a second state wherein the first and the second light deflecting liquid crystal cells are respectively in a cholesteric blue phase and a homeotropic phase.

Abstract: An automatic-darkening filter 10, 10? that comprises a first polarizer 14, a second polarizer 18, a first liquid-crystal cell 16, and a sensor 64. The first polarizer 14 has a first polarization direction, and the second polarizer 18 has a second polarization direction. The liquid crystal cell 16 is disposed between the first and second polarizers 14, 18 and contains first and second optically-transparent, flexible, glass layers 40 and 42 with the liquid crystal layer 48 being located between these layers. The sensor 64 detects incident light and causes a signal to be sent, which causes molecular rotation within the liquid crystal layer. The inventive automatic-darkening filter is beneficial in that overall product weight can be reduced and the view field can be increased.

Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including an upper substrate, a lower substrate, and a liquid crystal layer between the upper substrate and the lower substrate, an upper polarizing plate including a first ?/4 plate positioned on the upper substrate of the liquid crystal display panel, a first linear polarizer positioned on the first ?/4 plate, and a second ?/4 plate displayed on the first linear polarizer, and a lower polarizing plate including a third ?/4 plate positioned on the lower substrate of the liquid crystal display panel and a second linear polarizer positioned on the third ?/4 plate.

Abstract: Embodiments of the present invention provide three-dimensional glasses and a control chip thereof. The three-dimensional glasses comprise: a normal black mode liquid crystal eyeglass; a normal white mode liquid crystal eyeglass; and a control chip, connected to both of the normal black mode liquid crystal eyeglass and the normal white mode liquid crystal eyeglass, wherein a voltage output terminal of the control chip simultaneously supplies a high level or a low level to the normal black mode liquid crystal eyeglass and the normal white mode liquid crystal eyeglass based on a predetermined high and low level switching frequency.

Abstract: In one embodiment, a pair of liquid crystal shutter glasses include a first liquid crystal shutter and a second liquid crystal shutter. The first and second liquid crystal shutters are switched to a transmissive state by turns. The respective first and second liquid crystal shutters include a first electrode substrate and a second electrode substrate opposing the first electrode substrate. An OCB (Optically Compensated Bend) mode liquid crystal layer is held between the first and second electrode substrates. The first electrode substrate includes a first electrode and a second electrode arranged adjacent to the first electrode. The first and second electrodes respectively include a side opposing each other and a plurality of projecting portions provided to the respective opposing sides of the first and second electrodes alternately.

Abstract: A control device (4) controls a varifocal lens (2) having a first substrate (20), a second substrate (22) facing the first substrate (20), and a varifocal component (14) disposed between the first substrate (20) and the second substrate (22). When an off signal is inputted to the varifocal component (14), the control device (4) stops applying voltage to the varifocal component (14), then applies voltage for a specific length of time, and finally stops the voltage. This reduces the duration of hazing that occurs during the switching of voltage application to the varifocal component (14).

Abstract: In one embodiment, the liquid crystal shutter is equipped with a first liquid crystal panel in the OCB mode to control the transmissivity of the light entering into left eye and a second liquid crystal panel in the OCB mode to control the transmissivity of the light entering into right eye, and a drive portion to control the transmissivity. The drive portion applies a normal voltage of a normal drive in a pulse shape and a retention voltage having a pulse shape with lower frequency than the normal voltage or lower voltage than normal voltage to the first liquid crystal panel and the second liquid crystal panel. The drive portion switches between the normal drive and the retention drive while maintaining bend alignment state.

Abstract: This invention discloses optical modules, and eyewear using them for performing viewing function(s) including viewing a shutter-based 3D display, viewing a polarization-based 3D display, emulating the Pulfrich effect, emulating a pair of pinhole glasses and emulating a pair of sunglasses.

Abstract: Significantly faster state transitioning time between the optimal optical density for viewing 2D Movies as 3D movies through Continuous Adjustable 3Deeps Filter Spectacles can be achieved by using multiple layers (multi-layer) of electronically controlled variable tint materials to fabricate the right and left lenses of the 3Deeps spectacles. The use of multi-layered lenses may result in as much as a 50% decrease in transition time between states. The invention also relates to Multi-Use Electronically Controlled Continuous Adjustable 3Deeps Filter Spectacles that house within a single spectacle frame several layers of optoelectronic material in which each layer of electronically controlled relates to a different method of viewing.

Abstract: The invention relates to liquid crystal lenses having dynamically switchable light transmission, including: a shutter (2) including two transparent substrates (21, 22) and a nematic liquid crystal layer (20) arranged between the substrates (21, 22); and a control circuit capable of alternately applying a bias voltage or a relaxation voltage across the liquid crystal to render the shutter (2)clear or opaque, the falling edges between the bias voltage and the relaxation voltage having a duration of 80 to 900 ?s.

Abstract: An electro-active ophthalmic lens is presented in which the lens includes a progressive addition region having an add power and an electro-active element. The electro-active element is in optical communication with the progressive addition region and has an activated state and a deactivated state. The electro-active element also includes a liquid crystalline material disposed in a cavity having a diffractive surface relief structure. The liquid crystalline material has a low rotational viscosity.

Abstract: According to one embodiment, a liquid crystal shutter component includes a first polarizer, a second polarizer, a liquid crystal layer, a first retardation layer, a second retardation layer, a third retardation layer and a fourth retardation layer. A liquid crystal orientation of the liquid crystal layer transitions between a plurality of bend orientation states. The retardation in the direction along the plane of the second retardation layer and the fourth retardation layer is 20 nm or more and 120 nm or less. The retardation along the first direction of the second retardation layer and the fourth retardation layer is 40 nm or more and 140 nm or less.

Abstract: A liquid crystal shutter includes a plurality of liquid crystal layers arranged in a light-incident direction; and a plurality of polarizers attached to each of the plurality of liquid crystal layers, polarization axes of 2 adjacent polarizers that have a liquid crystal layer therebetween being crossed at an angle of 90°, the accumulated value of degrees of polarization of polarizers that have polarization axes in a first direction being identical to that of degrees of polarizations of polarizers that have polarization axes in a second direction that crosses the first direction at an angle of 90°.

Abstract: Aspects of the present invention provide an electro-active lens and method for manufacturing the same that encapsulates liquid crystal using solid transparent optical material using an improved liquid crystal seal feature. The seal feature greatly reduces the visibility of the liquid crystal seal feature in an assembled electro-active lens. The seal feature is also structurally robust such that the electro-active lens can be processed to fit a spectacle frame without disturbing containment of the liquid crystal and without disrupting electrical connectivity to the lens used to alter the refractive index of the liquid crystal, thereby ensuring fabrication of a commercially viable electro-active lens.

Abstract: Shuttering eyewear (or shutter glasses) may be used to enable stereoscopic 3D and to provide different images to two viewers using a single display, known as Dual View. The shuttering eyewear may utilize charge recovery circuits. The charge recovery circuits may achieve high charge recovery efficiencies on the order of 80 to 90 percent resulting in a dramatic reduction in power supply battery operating current and a resulting increase in operating time. The charge recovery circuits may utilize switch mode boost conversion to recover most of the charge from a shutter that is being closed to one that is to be opened. Further, a charge recovery method for utilizing energy stored on a capacitive storage device may include closing a first active shutter, moving charge to a converter in buck mode to a capacitor, and pulling charge from the capacitor to open a second shutter.

Abstract: A liquid crystal device at least includes a first liquid crystal panel assembly in which a phase difference decreases due to application of a voltage, a second liquid crystal panel assembly that is formed to overlap with the first liquid crystal panel assembly and in which the phase difference increases due to application of a voltage, a pair of polarizers that is formed to be interposed between the first liquid crystal panel assembly and the second liquid crystal panel assembly, an optical compensation plate that is formed to overlap with at least one of the pair of polarizers, and a control unit that controls the voltages applied to the first liquid crystal panel assembly and the second liquid crystal panel assembly.

Abstract: The present disclosure relates to a pair of 3D glasses and a 3D video playing apparatus. A quarter-wave phase plate is provided at the end of a liquid crystal display (LCD) and the end of the pair of 3D glasses respectively so that the light propagates in the form of the circularly polarized light from a 3D display device to the pair of 3D glasses. Thereby, the technical shortcoming of a decreased luminance of an image or even failure to form an image due to an inappropriate angle included between the pair of 3D glasses and the 3D display device is overcome.

Abstract: A 3D image display device includes a 3D image display panel. A patterned retarder is formed on an entire surface of the 3D image display panel. 3D glasses include a lens. The lens includes an SG panel having liquid crystal molecules and a ?/4 plate on an upper surface of the SG panel. The 3D image display panel and the 3D glasses are synchronized.

Abstract: A liquid crystal shutter that realizes a high speed response and that solves a problem in which light leakage cannot be alleviated is provided. An alignment film coated on substrate 5a adjacent to another liquid crystal device of substrates (5a) and (5b) of each of liquid crystal devices (2a, 2b) is horizontal alignment film (7a) and alignment film coated on the other substrate (5b) is vertical alignment film (7b). A alignment treatment is performed on the horizontal alignment film coated on substrate (5a) of liquid crystal device (2b) having a polarizer (3) in a direction parallel to a light transmission axis of analyzer (4) and an alignment treatment is performed on the horizontal alignment film coated on substrate (5a) of liquid crystal device (2a) having analyzer (4) in a direction parallel to the light transmission axis of polarizer (4). Liquid crystal materials (6) of liquid crystal devices (2a, 2b) have a positive dielectric anisotropy and have twisting directions that is the reverse of each other.

Abstract: An adaptive liquid crystal lens system comprising a first substrate assembly, a second substrate assembly having a continuous phase profile, and a liquid crystal layer disposed between the first and second substrate assemblies. The first substrate assembly includes a first transparent substrate, an alignment layer, and a first conductive layer. The first conductive layer is disposed on the bottom surface of the first transparent substrate and adjacent to the top surface of the alignment layer. The second substrate assembly includes a second transparent substrate, a lens having a grooved surface, and a second conductive layer. The second conductive layer is a continuous layer adjacent to the lens. The liquid crystal layer is received in the grooves of the lens, and is adjacent to the bottom surface of the alignment layer. The alignment layer causes the liquid crystal material in the liquid crystal layer to be in a homeotropic state.

Abstract: A pair of stereoscopic glasses includes a pair of left and right stereoscopic rims connected to each other and respectively holding stereoscopic optical components used when observing a stereoscopic image, and a stereoscopic frame that includes stereoscopic temples extending rearward from the stereoscopic rims. The stereoscopic frame is provided with an engagement section that is brought into engagement with a rim or a bridge of a frame of glasses already worn by a user in a state where the stereoscopic optical components are positioned in front of lenses of the glasses so that the stereoscopic optical components are positionally maintained in front of the lenses of the glasses.

Abstract: A stereoscopic image display device includes a display panel provided with a pixel array, a rendering processing unit that performs rendering for odd left image data and even right image data during an n-th frame period, and performs rendering for odd right image data and even left image data during a (n+1)-th frame period, a patterned retarder including a first retarder that transmits light so as to be modulated into first circularly polarized light and a second retarder that transmits light so as to be modulated into second circularly polarized light, active retarder glasses including a first active retarder that transmits one of the first circularly polarized light and the second circularly polarized light, and a second active retarder that transmits the remaining one of the first circularly polarized light and the second circularly polarized light, and a control unit that generates a switchable control signal.

Abstract: There is provided a superior shutter glass device that has a simple and light-weight structure, has a high degree of designability, and is fitted to each wearing user. Shutter glasses 400 form a structure body in which a transparent front shield 401 to which left and right liquid crystal shutters 403L and 403R are bonded is supported by a front frame 407. On both left and right ends of the front frame 407, left and right temples 402L and 402R are supported so as to be open or closed. The shutter glasses 400 supporting the liquid crystal shutters 403L and 403R using the front shield 401 are simple, light-weight, and have superior designability.

Abstract: A liquid crystal lens including a first substrate, a first electrode layer, a liquid crystal layer and a second electrode layer is provided. The second electrode layer includes a plurality of first electrode patterns and a plurality of second electrode patterns. The second electrode patterns are opposite to the first electrode patterns, respectively, and the second electrode patterns and the first electrode patterns are alternately arranged. A square measure of first or second electrode patterns decreases from an edge of the liquid crystal lens to a center of the liquid crystal lens, so that a resistance of the first or second electrode patterns increases from the edge to the center of the liquid crystal lens.

Abstract: Techniques, systems and apparatus are described for implementing a telescopic contact lens. In one aspect, a telescopic contact lens includes an inner lens including optical apertures and aspheric reflectors, an outer lens of a biocompatible material, and a switching device that rapidly switches between normal and telescopic vision. The optical apertures of the inner lens includes a center aperture that allows light to pass through for normal vision and an annular aperture located on the periphery of the inner lens that allows light to enter for telescopic vision, The aspheric reflectors are configured between the annular aperture and the center aperture to reflect the light and magnify a visual image for telescopic vision.

Abstract: The instant application describes a display device for switching a display mode between a first display mode for displaying a stereoscopic image with an eyewear device, and a second display mode, which is different from the first display mode. The display device includes a signal generator, which generates a timing signal for notifying a timing of an increasing period of an incident light amount to left and right eyes or a stop signal for stopping the adjustment operation as a control signal, which is transmitted by a transmitter to the eyewear device. The transmitter transmits the timing signal for the first display mode while the image is displayed in the first display mode. If the display mode is then switched from the first to second display mode, the transmitter sequentially transmits the stop signal and the timing signal for the second display mode to the eyewear device.

Abstract: A three-dimensional imaging device is provided which includes a display device and a viewing device. The display device includes a first substrate, a second substrate, a black absorbing layer and a cholesteric liquid crystal layer including a first levo-cholesteric liquid crystal layer and a first dextro-cholesteric liquid crystal layer. The viewing device includes a second levo-cholesteric liquid crystal layer and a second dextro-cholesteric liquid crystal layer. The first levo-cholesteric liquid crystal layer is made of a same material as the second levo-cholesteric liquid crystal layer, and the first dextro-cholesteric liquid crystal layer is made of a same material as the second dextro-cholesteric liquid crystal layer.

Abstract: A liquid crystal shutter includes a first support substrate having a first electrode and a second support substrate having a second electrode opposite to the first electrode. A liquid crystal layer is sandwiched between the first and second electrodes so as to have a switching region. The switching region becomes a bend alignment state from a splay alignment state when a voltage is applied to the liquid crystal layer. A nucleus region formation portion is arranged on the first support substrate to form a nucleus region in the switching region corresponding to the nucleus region formation portion in the liquid crystal layer, in which the splay alignment is more stable than in the switching region.

Abstract: A spectacle lens is disclosed. The disclosed lens provides a vision correcting area for The correction of a wearer's refractive error. The viewing correction area provides Correction for non-conventional refractive error to provide at least a part of the Wearer's vision correction. The lens has a prescription based on a wave front analysis Of the wearer's eye and the lens can further be modified to fit within an eyeglass frame.

Abstract: The present invention generally relates to contact lenses. Specifically, this invention relates to contact lenses that change color based on one or more stimuli. The present application provides for a color changing contact lens that can change its color based on one or more stimuli. The color changing contact lens is constructed of an inner layer, an outer layer and a supply of liquid crystal.

Abstract: A system, method, and computer program product are provided for determining an angle of polarization for a display device. Further, a polarization associated with shutter glasses is rotated the determined angle for viewing the display device utilizing the shutter glasses.

Abstract: Aspects of the present invention provide an electro-active lens and method for manufacturing the same that encapsulates liquid crystal using solid transparent optical material using an improved liquid crystal seal feature. The seal feature greatly reduces the visibility of the liquid crystal seal feature in an assembled electro-active lens. The seal feature is also structurally robust such that the electro-active lens can be processed to fit a spectacle frame without disturbing containment of the liquid crystal and without disrupting electrical connectivity to the lens used to alter the refractive index of the liquid crystal, thereby ensuring fabrication of a commercially viable electro-active lens.

Abstract: A display apparatus switching between a two-dimensional (2D) display mode and a three-dimensional (3D) display mode is provided. The display apparatus includes: an imaging device configured to capture an image a pair of 3D glasses worn by a user to view an image displayed in the 3D display mode, wherein the 3D glasses are switchable between a plurality of different states; a transmitter/emitter module configured to remotely control the 3D glasses so as to switch the states of the 3D glasses; and a controller configured to determine whether the user is wearing the 3D glasses based on a state of the 3D glasses in the image captured by the imaging device, and to control the display apparatus to operate in the 3D display mode when it is determined that the user is wearing the 3D glasses.

Abstract: To improve a small image display device of the type to be attached to glasses so that positioning thereof can be made easily during use. An image display device 100 comprises a body assembly 110 which can be fixed to a temple 210 of glasses 200, and an image display section 120 adapted to move from a standby position that is located close to the body assembly 110 to a service position just in front of lenses 220. The service position for the image display section 120 is previously determined, and the image display section 120 is automatically moved from the standby position to the service position. This allows the image display section 120 to be positioned at a proper position. The image display section 120 contains a display 125 and a free curved surface prism 126 therein. A user can view images enlarged from the images produced on the display 125 when the image display section 120 is at the service position.

Abstract: Shuttering eyewear (or shutter glasses) may be used to enable stereoscopic 3D and to provide different images to two viewers using a single display, known as Dual View. The shuttering eyewear may utilize charge recovery circuits. The charge recovery circuits may achieve high charge recovery efficiencies on the order of 80 to 90 percent resulting in a dramatic reduction in power supply battery operating current and a resulting increase in operating time. The charge recovery circuits may utilize switch mode boost conversion to recover most of the charge from a shutter that is being closed to one that is to be opened. Further, a charge recovery method for utilizing energy stored on a capacitive storage device may include closing a first active shutter, moving charge to a converter in buck mode to a capacitor, and pulling charge from the capacitor to open a second shutter.

Abstract: Glasses of present invention includes a frame portion which includes an opening through which an image displayed on a displaying device is viewed with bilateral eyes, a temple portion configured to be capable of being opened and closed against the frame portion and which includes spring material capable of being inelastically deformed, a movable portion arranged at one of the temple portion and the frame portion and which contacts to the other of the temple portion and the frame portion when the temple portion is opened to the maximum while the contacting position is movable, and a contacting portion which is arranged at the other of the temple portion and the frame portion and which contacts to the movable portion when the temple portion is opened to the maximum and varies the maximum open amount of the temple portion corresponding to movement of the movable portion.

Abstract: A pair of stereoscopic glasses includes a pair of left and right stereoscopic rims connected to each other and respectively holding stereoscopic optical components used when observing a stereoscopic image, and a stereoscopic frame that includes stereoscopic temples extending rearward from the stereoscopic rims. The stereoscopic frame is provided with an engagement section that is brought into engagement with a rim or a bridge of a frame of glasses already worn by a user in a state where the stereoscopic optical components are positioned in front of lenses of the glasses so that the stereoscopic optical components are positionally maintained in front of the lenses of the glasses.

Abstract: A display apparatus includes a shutter panel and a display panel that alternately displays a left-eye image and a right-eye image in a 3D mode. The shutter panel includes dual-frequency liquid crystals in which a polarity of dielectric constant anisotropy is changed according to a frequency of the driving voltage to selectively delay a phase of the left-eye image or the right-eye image, which pass through the dual-frequency liquid crystals. The dual-frequency liquid crystals have a fast response speed to the low voltage, and thus a cross-talk phenomenon between the left-eye image and the right-eye image may be prevented.

Abstract: An optical device including: one or more optical components configured to be electrically actuated such that light transmission states are variable, a driver circuit for the optical components, a power source unit for driving the optical components, a pair of rims for supporting the optical components, a pair of temples having front and rear ends and being connected at the front ends to the pair of rims, and a pair of earpieces formed at the rear ends of the pair of temples. The power source unit includes a secondary battery, and a power receiver coil for charging the secondary battery. The secondary battery includes a case made of a non-magnetic material.

Abstract: Aspects of the disclosure provide a display system. The display system can include a display module having a configurable optical characteristic that varies from substantially transmissive to substantially reflective, at least one data capturing device configured to capture data to form a display image, and at least a first projector configured to project the display image to the display module. Therefore, the display image can be overlaid with a real image according to an optical configuration of the display module.

Abstract: Disclosed are active shutter glasses and a three-dimensional image recognition unit capable of visually recognizing a three-dimensional image with excellent display quality. The active shutter glasses are active shutter glasses for three-dimensional image recognition. The active shutter glasses comprise a right temple, a left temple, a right-eye lens, and a left-eye lens. The right-eye lens and the left-eye lens comprise liquid crystal cells. The right-eye lens and the left-eye lens have an inclination with respect to a state where the right-eye lens and the left-eye lens are arranged on the same plane, and are arranged on a surface orthogonal to a horizontal surface including the top surfaces of the right temple and the left temple.

Abstract: Disclosed is an optical device which includes: an optical component configured to be electrically actuated such that a light transmission state is variable; a driver circuit for the optical component; a power source unit for driving the optical component; a rim for supporting the optical component; a temple having front and rear ends and connected at the front end to the rim; and an earpiece formed at the rear end of the temple. The power source unit includes a secondary battery, a power switch, a power switch control portion, and a use-status sensing portion for sensing the status of use by a user of the optical device. The power switch control portion performs control to turn off the power switch when the use-status sensing portion does not sense any use by the user of the optical device.

Abstract: A method for driving at least one shutter glass lens having a property of light retardation that is variable at least according to the wavelength of the light passing through it, the shutter glass lens having an LC cell driven to a relatively “on” or a relatively “off” state according to a voltage applied across it. The lens is further operable to pass temporally modulated color display images of at least first, second, and third wavelengths being applied to a display surface, further including first, second, and third holding voltages to the LC cell in decreasing magnitude to stabilize the retardation of the lens for first, second, and third display image wavelengths.