Abstract: Provided is an optical apparatus that is capable of switching between a state in which the optical apparatus can reflect light and a state in which the optical apparatus can output light and suppressing deterioration of display quality of a light reflection image. The optical apparatus includes: a light emitting device having a light emitting surface; an absorption type polarizing plate disposed opposite to the light emitting surface of the light emitting device; a liquid crystal optical element disposed between the light emitting device and the absorption type polarizing plate; a reflection type polarizing plate disposed between the light emitting device and the liquid crystal optical element; and an adhesive layer disposed on a surface of the reflection type polarizing plate that faces the light emitting device.

Abstract: Provided is an optical apparatus that is capable of switching between a state in which the optical apparatus can reflect light and a state in which the optical apparatus can output light and suppressing deterioration of display quality of a light reflection image. The optical apparatus includes: a light emitting device having a light emitting surface; an absorption type polarizing plate disposed opposite to the light emitting surface of the light emitting device; a liquid crystal optical element disposed between the light emitting device and the absorption type polarizing plate; a reflection type polarizing plate disposed between the light emitting device and the liquid crystal optical element; and an adhesive layer disposed on a surface of the reflection type polarizing plate that faces the light emitting device.

Abstract: To reliably perform light irradiation in a vehicular lamp system using a liquid crystal element even in a cryogenic environment. A control device for a vehicular lamp comprising a light source and a liquid crystal element where the liquid crystal element is set to a light-shielded state and the light source is set to a light-on state to heat the liquid crystal element by the light emitted from the light source when the temperature of the liquid crystal element is estimated to be lower than a predetermined value.

Abstract: To increase the light utilization efficiency when selective light irradiation is performed using a liquid crystal element (a liquid crystal device). A lamp unit including: a light source; a reflective polarizing plate disposed at a position where light from the light source is incident; a reflecting mirror configured to reflect a reflected light generated by the reflective polarizing plate and re-enters the reflected light to the reflective polarizing plate; a liquid crystal device disposed on the light emitting surface side of the reflective polarizing plate; a polarizing plate disposed on the light emitting surface side of the liquid crystal device; and a lens disposed on the light emitting surface side of the polarizing plate.

Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.

Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.

Abstract: To increase the light utilization efficiency when selective light irradiation is performed using a liquid crystal element (a liquid crystal device). A lamp unit including: (a) a light source; (b) a reflective polarizing plate disposed at a position where light from the light source is incident; (c) a reflecting mirror configured to reflect a reflected light generated by the reflective polarizing plate and re-enters the reflected light to the reflective polarizing plate; (d) a liquid crystal device disposed on the light emitting surface side of the reflective polarizing plate; (e) a polarizing plate disposed on the light emitting surface side of the liquid crystal device; and (f) a lens disposed on the light emitting surface side of the polarizing plate.

Abstract: To reliably perform light irradiation in a vehicular lamp system using a liquid crystal element even in a cryogenic environment. A control device for a vehicular lamp comprising a light source and a liquid crystal element where the liquid crystal element is set to a light-shielded state and the light source is set to a light-on state to heat the liquid crystal element by the light emitted from the light source when the temperature of the liquid crystal element is estimated to be lower than a predetermined value.

Abstract: To obtain projection images with high contrast when selective light irradiation is performed forward of its own vehicle. A lamp unit for a vehicular lamp system performing selective light irradiation to the surroundings of the own vehicle includes: a light source; an optical shutter part that modulates light emitted from the light source; and an optical system that projects the light transmitted through the optical shutter part. The optical shutter part includes: polarizers; a liquid crystal element disposed between the polarizers and where the initial alignment of liquid crystal molecules is horizontally aligned and causes an alignment change in the in-plane direction upon electric field application; a first optical plate which is a positive A-plate disposed between the polarizers closer to the light source and the liquid crystal element; and a second optical plate which is a positive C-plate disposed between the first optical plate and the liquid crystal element.

Abstract: A LCD device containing an active drive dot matrix LCD element, each pixel containing subsidiary pixels each having a color filter; a passive drive segment display LCD element laminated on rear side of the active drive LCD element, having segment electrode, arranged to be applied with a set voltage, the segment electrode having edge defining a segment shape; cross-nicol polarizers disposed on both outer sides of the LCD elements; controller circuit including first part controlling voltages to be applied to subsidiary pixels, and second part controlling voltages to be applied to the segment electrode; wherein the display device produce normally black display in the absence of applied voltage; and wherein when the segment electrode is activated, those subsidiary pixels in pixels outside the edge of the activated segment electrode are partly driven and partly not driven, displaying different color or intermediate grade, than the conventional art.

Abstract: A liquid crystal element comprises: a first substrate and a second substrate disposed substantially in parallel to each other to face each other, an electrode and a homeotropic alignment film being disposed on each of facing surfaces of the first substrate and the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate and formed of a liquid crystal material having a negative dielectric-constant anisotropy, wherein a twisting angle of the liquid crystal layer when a voltage is applied between the electrode of the first substrate and the electrode of the second substrate is in a range from 70° to 120°.

Abstract: A liquid crystal apparatus comprises, a display device having a display surface, a first polarizing plate categorized as absorption type, disposed so as to face the display surface of the display device, and having a transmittance characteristic that a transmittance to a non-polarized light is 50% or more, a liquid crystal optical element disposed between the display device and the first polarizing plate, and a second polarizing plate categorized as reflection type and disposed between the display device and the liquid crystal optical element.

Abstract: A LCD device containing an active drive dot matrix LCD element, each pixel containing subsidiary pixels each having a color filter; a passive drive segment display LCD element laminated on rear side of the active drive LCD element, having segment electrode, arranged to be applied with a set voltage, the segment electrode having edge defining a segment shape; cross-nicol polarizers disposed on both outer sides of the LCD elements; controller circuit including first part controlling voltages to be applied to subsidiary pixels, and second part controlling voltages to be applied to the segment electrode; wherein the display device produce normally black display in the absence of applied voltage; and wherein when the segment electrode is activated, those subsidiary pixels in pixels outside the edge of the activated segment electrode are partly driven and partly not driven, displaying different color or intermediate grade, than the conventional art.

Abstract: To further reduce time necessary to eliminate the problem caused by static electricity. The liquid crystal display apparatus includes a plurality of unit display regions and the plurality of unit display regions are arranged along a first direction spaced from one another. At least one of a plurality of first electrodes has a plurality of electrode parts corresponding to each of the plurality of unit display regions and are mutually separated and arranged apart from one another in the first direction, a plurality of first lead wirings where each first lead wiring extends in the direction different from the first direction and extends outside an inner area, and a first crossover wiring disposed outside the inner area and mutually connects the plurality of first lead wirings.

Abstract: A liquid crystal display includes first and second substrates placed opposite each other, a common electrode on one side of the first substrate to substantially cover a whole surface, a segment electrode on one side of the second substrate, a routing wire on one side of the second substrate and connected to the segment electrode, a liquid-crystalline resin film without electrical conductivity on one side of the second substrate, and a liquid crystal film between the substrates. The liquid-crystalline resin film has refractive index anisotropy being substantially equal to that of a liquid crystal material of the liquid crystal film, has molecular alignment being substantially equal to that of the liquid crystal film, and is disposed to fill a space between the routing wire and the common electrode. The liquid crystal film is disposed to fill a space between the segment electrode and the common electrode.

Abstract: A liquid crystal display includes first and second substrates placed opposite each other, a common electrode on one side of the first substrate to substantially cover a whole surface, a segment electrode on one side of the second substrate, a routing wire on one side of the second substrate and connected to the segment electrode, a liquid-crystalline resin film without electrical conductivity on one side of the second substrate, and a liquid crystal film between the substrates, and being subject to twisted alignment between the substrates. The liquid-crystalline resin film has refractive index anisotropy being substantially equal to that of a liquid crystal material of the liquid crystal film, is subject to twisted alignment, and is disposed to fill a space between the routing wire and the common electrode. The liquid crystal film is disposed to fill a space between the segment electrode and the common electrode.

Abstract: To further reduce time necessary to eliminate the problem caused by static electricity. The liquid crystal display apparatus includes a plurality of unit display regions and the plurality of unit display regions are arranged along a first direction spaced from one another. At least one of a plurality of first electrodes has a plurality of electrode parts corresponding to each of the plurality of unit display regions and are mutually separated and arranged apart from one another in the first direction, a plurality of first lead wirings where each first lead wiring extends in the direction different from the first direction and extends outside an inner area, and a first crossover wiring disposed outside the inner area and mutually connects the plurality of first lead wirings.

Abstract: A liquid crystal display includes first and second substrates; first and second electrodes provided on the first and second substrates respectively; and a liquid crystal layer provided between the first and second substrates. The first electrode includes first openings each having an elongated shape in a first direction and which are arranged with regularity, and a short side edge thereof is longer than a length between the first openings adjacent in the first direction. The second electrode includes second openings each having an elongated shape in the first direction and which are arranged with regularity, and a short side edge thereof is longer than a length between the second openings adjacent in the first direction. Each of the first and second openings has a recess in at least either of two outer edge parts along the first direction in a planar view.

Abstract: A liquid crystal display apparatus with electrodes comprising openings that is less susceptible to disturbance of the contour shape of the display part. The apparatus includes two substrates, a first electrode, a second electrode. A display part is demarcated in a region where the two electrodes overlap, and an offset region is set from the display part edge to the inside. The electrodes comprise first openings disposed in a non offset region, and second openings disposed in the offset region. First openings comprises a shape wherein a branch part disposed so that the longitudinal direction thereof extends along a first direction and a branch part disposed so that the longitudinal direction thereof extends along a second direction are connected. Second openings comprises openings disposed so that the longitudinal direction thereof extends along the first direction, and openings disposed so that the longitudinal direction thereof extends along the second direction.

Abstract: To provide a technique that prevents electrode disconnection in a liquid crystal display apparatus comprising a plurality of openings in an electrode. The apparatus comprises a first substrate, a second substrate, a first electrode, a second electrode, and a liquid crystal layer. The first electrode comprises first openings and the second electrode comprises second openings. Each first opening is disposed forming columns so that the respective longitudinal directions align with a first direction, and comprises two short-side edges that obliquely cross the first direction at an angle other than orthogonal. Each opening is disposed forming columns so that the respective longitudinal directions align with the first direction, and comprises two short-side edges that obliquely cross the first direction at an angle other than orthogonal. The first openings and second openings are alternately disposed column by column along a second direction that crosses the first direction.