Abstract: A latch circuit device includes: a latch circuit configured to latch an input signal to a microcomputer; a detection circuit configured to detect that the input signal is input to the latch circuit during a sleep period in which the microcomputer is in a sleep state; a wake-up circuit configured to transmit a wake-up signal to the microcomputer when an input of the input signal is detected during the sleep period; a sampling circuit configured to read the input signal from the latch circuit; a transmission circuit configured to transmit the input signal read by the sampling circuit to the microcomputer returned from the sleep state based on the wake-up signal; and a release circuit configured to release a latch state of the latch circuit after the input signal is read.

Abstract: A primary check system includes: a control unit configured to output data for primary check to a plurality of primary check circuits as a serial signal via a serial communication line; and a serial and parallel conversion circuit configured to convert the data for primary check, that is received as the serial signal, into a parallel signal and transmit the parallel signal to the plurality of primary check circuits, and the control unit is configured to set the serial and parallel conversion circuit into an active state before a primary check is started, and set the serial and parallel conversion circuit into an inactive state when the primary check is completed.

Abstract: A primary check system includes: a control unit configured to output data for primary check to a plurality of primary check circuits as a serial signal via a serial communication line; and a serial and parallel conversion circuit configured to convert the data for primary check, that is received as the serial signal, into a parallel signal and transmit the parallel signal to the plurality of primary check circuits, and the control unit is configured to set the serial and parallel conversion circuit into an active state before a primary check is started, and set the serial and parallel conversion circuit into an inactive state when the primary check is completed.

Abstract: A latch circuit device includes: a latch circuit configured to latch an input signal to a microcomputer; a detection circuit configured to detect that the input signal is input to the latch circuit during a sleep period in which the microcomputer is in a sleep state; a wake-up circuit configured to transmit a wake-up signal to the microcomputer when an input of the input signal is detected during the sleep period; a sampling circuit configured to read the input signal from the latch circuit; a transmission circuit configured to transmit the input signal read by the sampling circuit to the microcomputer returned from the sleep state based on the wake-up signal; and a release circuit configured to release a latch state of the latch circuit after the input signal is read.

Abstract: According to an embodiment, a display device includes a reflecting member and a display. The reflecting member has a reflecting surface and has an optical property that reflected light of parallel light incident on the reflecting surface is focused a focal point. The reflecting member is fixed to a couch top on which a user lies down. The display has a display surface for displaying an image. The display is fixed to the couch top so that the display surface is positioned between the focal point and the reflecting surface to face the reflecting surface.

Abstract: According to one embodiment, a display device includes a display unit, an optical unit, and a reflector. The display unit includes a plurality of pixels arranged in a first plane. The display unit emits light including image information. At least a portion of the light emitted by the display unit is incident on the optical unit. The optical unit includes a first optical element. A travel direction of the at least the portion of the light is modified by the first optical element. The reflector reflects the at least the portion of the light modified by the first optical element. A perpendicular direction perpendicular to the first plane is non-parallel to an optical axis of the first optical element.

Abstract: According to one embodiment, a display device includes a display, an optical unit, and a reflector. The display includes a first display region emitting a first bundle of rays and a second display region emitting a second bundle of rays. The optical unit includes first and second emission regions transmitting the first and the second bundle of rays. The reflector includes a first reflection region reflecting the first bundle of rays, and a second reflection region reflecting the second bundle of rays. The optical unit forms a first focal point of the first bundle of rays between the optical unit and the reflector, and forms a second focal point of the second bundle of rays between the optical unit and the reflector. A distance between the first emission region and the first reflection region is shorter than a distance between the second emission region and the second reflection region.

Abstract: An example optical device includes a first optical element and a second optical element. The first optical element has first and second surfaces. A first light emitted by a display is incident on the first surface. The first optical element includes transmissive portions and non-transmissive portions. Each of the transmissive portions extends in a first direction parallel to the first surface. The non-transmissive portions are respectively disposed in regions between the transmissive portions. A light transmittance of the non-transmissive portions is lower than that of the transmissive portions. A second light emitted from the second surface is incident on the second optical element, which emits a third light by condensing the second light. An optical axis of the third light is tilted with respect to an optical axis of the second light in a plane parallel to the first direction.

Abstract: A medical imaging apparatus comprises a gantry, a table, a first emitting unit, and a reflection unit. The table is movable to go in and out of the gantry. The first emitting unit is apart from the gantry and configured to emit image light. The reflection unit is configured to reflect the image light toward the table.

Abstract: According to an embodiment, a display device includes a reflecting member and a display. The reflecting member has a reflecting surface and has an optical property that reflected light of parallel light incident on the reflecting surface is focused a focal point. The reflecting member is fixed to a couch top on which a user lies down. The display has a display surface for displaying an image. The display is fixed to the couch top so that the display surface is positioned between the focal point and the reflecting surface to face the reflecting surface.

Abstract: According to one embodiment, a display device includes a display, an optical unit, and a reflector. The display includes a first display region emitting a first bundle of rays and a second display region emitting a second bundle of rays. The optical unit includes first and second emission regions transmitting the first and the second bundle of rays. The reflector includes a first reflection region reflecting the first bundle of rays, and a second reflection region reflecting the second bundle of rays. The optical unit forms a first focal point of the first bundle of rays between the optical unit and the reflector, and forms a second focal point of the second bundle of rays between the optical unit and the reflector. A distance between the first emission region and the first reflection region is shorter than a distance between the second emission region and the second reflection region.

Abstract: According to one embodiment, an optical device includes a first optical element and a second optical element. The first optical element has first and second surfaces. A first light emitted by a display is incident on the first surface. The first optical element includes transmissive portions and non-transmissive portions. Each of the transmissive portions extends in a first direction parallel to the first surface. The non-transmissive portions are respectively disposed in regions between the transmissive portions. A light transmittance of the non-transmissive portions is lower than that of the transmissive portions. A second light emitted from the second surface is incident on the second optical element, which emits a third light by condensing the second light. An optical axis of the third light is tilted with respect to an optical axis of the second light in a plane parallel to the first direction.

Abstract: According to one embodiment, an optical device includes first and second optical elements. The first optical element is disposed on a display surface. The first optical element includes first and second surfaces. A first light emitted from the display surface is incident on the first surface. The first optical element includes transmissive portions and non-transmissive portions. Each of the transmissive portions extends in a first direction parallel with the first surface. Each of the non-transmissive portions is disposed between the transmissive portions. A light transmittance of the non-transmissive portions is lower than that of the transmissive portions. A second light emitted from the second surface is incident on the second optical element, which emits the second light as a third light. An optical axis of the third light is tilted with respect to an optical axis of the second light in a plane perpendicular to the second direction.

Abstract: According to one embodiment, a display device includes a display unit, an optical unit, and a reflector. The display unit includes a plurality of pixels arranged in a first plane. The display unit emits light including image information. At least a portion of the light emitted by the display unit is incident on the optical unit. The optical unit includes a first optical element. A travel direction of the at least the portion of the light is modified by the first optical element. The reflector reflects the at least the portion of the light modified by the first optical element. A perpendicular direction perpendicular to the first plane is non-parallel to an optical axis of the first optical element.

Abstract: According to one embodiment, a display device includes a display, a first optical element, and a reflector. The display unit includes a first pixel emitting a first light, and a second pixel emitting a second light. The first optical element has an incident surface and an emission surface. A diameter of a bundle of rays of the first light at the incident surface is a first value. A diameter of a bundle of rays of the second light at the incident surface is a second value. A diameter of the bundle of rays of the first light at the emission surface is a third value. A diameter of the bundle of rays of the second light at the emission surface is a fourth value. A ratio of the third value to the first value is different from a ratio of the fourth value to the second value.

Abstract: A display device includes: a light source configured to generate a coherent light beam; and an optical plate including a plurality of microlenses arranged with a period larger than the diameter of the light beam, the optical plate being configured to control the divergence angle of the light beam.

Abstract: According to one embodiment, a display apparatus projects a light flux including image information toward one eye. The apparatus includes an image formation unit and a projection unit. The image formation unit is configured to emit the light flux. The projection unit includes a projection region limiting unit and a semi-transmissive reflective unit. The projection region limiting unit is configured to limit a width of the light flux emitted from the image formation unit. The semi-transmissive reflective unit is configured to reflect the light flux emitted from the projection region limiting unit. A distance between the semi-transmissive reflective unit and an imaging plane of the light flux is not more than 250 mm.

Abstract: According to one embodiment, an optical element includes a first optical sheet having a first major surface. The first optical sheet includes a first Fresnel lens provided in the first major surface. An optical axis of the first Fresnel lens at the first major surface is disposed at a position different from a position of a center of an outline of the first major surface.

Abstract: A display device is provided that includes: a projection unit emitting a light flux including image information; and a divergence angle controlling unit controlling a divergence angle of the light flux emitted from the projection unit to not more than a prescribed angle. The divergence angle controlling unit includes a transmission unit transmitting the light flux emitted from the projection unit and a light shielding unit shielding part of the light flux, and the part of the light flux is shielded by the light shielding unit so that the divergence angle of the light flux is controlled to not more than a prescribed angle.

Abstract: An automotive display system includes an image projection unit and an angle information acquisition unit. The image projection unit projects a light flux including an image including a display object toward one eye of an image viewer. The angle information acquisition unit acquires at least one of vehicle angle information and external environment angle information. The vehicle angle information relates to an angle of at least one of an attitude and a heading of a vehicle carrying the image viewer. The external environment angle information relates to an angle of a background object at a target position of the display object in a background of an external environment of the vehicle. The image projection unit changes an angle of the display object in the image based on at least one of the vehicle angle information and the external environment angle information acquired by the angle information acquisition unit.