Abstract: An optical module includes: first and second optical elements; third and fourth optical elements; a first polarization control element and a first reflective light modulator that are sequentially arranged in one of a positive direction of a first vector and a negative direction of a second vector from the second optical element; a second polarization control element and a second reflective light modulator that are sequentially arranged in one of a negative direction of the first vector and a positive direction of the second vector from the third optical element; and a sliding mechanism that relatively moves the first and second optical elements and the third and fourth optical elements in the direction of the first vector relative.

Abstract: A reflective spatial light modulator includes a perovskite-type electro-optic crystal having a relative permittivity of 1,000 or higher, a light input and output unit disposed on an input surface of the electro-optic crystal and including a first electrode through which input light is transmitted, a light reflecting unit including a plurality of second electrodes disposed on a rear surface of the electro-optic crystal and reflects the input light toward the light input and output unit, a drive circuit including a plurality of drive electrodes respectively corresponding to the plurality of second electrodes and for applying an electric field to a part between the first electrode and the second electrode by inputting an electrical signal to each of the plurality of drive electrodes, and a plurality of bumps which are disposed such that the plurality of second electrodes and the plurality of drive electrodes are electrically connected to each other.

Abstract: A light modulator includes a perovskite-type electro-optic crystal including a first surface to which the input light is input and a second surface which faces the first surface; a first electrode which is disposed on the first surface of the electro-optic crystal and through which the input light is transmitted; a second electrode which is disposed on the second surface of the electro-optic crystal and through which the input light is transmitted; and a drive circuit for applying an electric field between the first electrode and the second electrode. The first electrode is disposed alone on the first surface. The second electrode is disposed alone on the second surface. At least one of the first electrode and the second electrode partially covers the first surface or the second surface. A propagation direction of the input light and an applying direction of the electric field are parallel to each other.

Abstract: A reflective spatial light modulator includes a perovskite-type electro-optic crystal having a relative permittivity of 1,000 or higher and including an input surface to which the input light is input and a rear surface which faces the input surface; a light input and output unit disposed on the input surface of the electro-optic crystal and including a first electrode through which the input light is transmitted; a light reflecting unit including a pixel electrode portion including a plurality of second electrodes and an adhesion layer fixing the pixel electrode portion to the rear surface, is disposed on the rear surface of the electro-optic crystal, and reflects the input light toward the input and output unit; and a drive circuit for applying an electric field between the first electrode and the plurality of second electrodes. The adhesion layer includes a dielectric material in a cured material of a non-conducting adhesive material.

Abstract: An optical element includes an electro-optic crystal having an isotropic crystal which belongs to a point group m3m of a cubic system and including an input surface to which input light is input and a rear surface which is a surface on the opposite side of the input surface; a first electrode disposed on the input surface; and a second electrode disposed on the rear surface. The input surface is located along at least one axis between axes obtained by rotating two crystal axes about one remaining crystal axis used as a rotation center at a predetermined angle in three crystal axes of the electro-optic crystal. A direction of an electric field to be induced by a voltage applied to a part between the first electrode and the second electrode is set in a propagation direction of the input light.

Abstract: A quantum simulator includes a pseudo speckle pattern generator, a main vacuum chamber, an atomic gas supply unit, a light beam generator, a photodetector, and an atom number detector. The pseudo speckle pattern generator generates a pseudo speckle pattern in the inside of the main vacuum chamber by light allowed to enter the inside of the main vacuum chamber through the second window. The pseudo speckle pattern generator includes a controller, a light source, a beam expander, a spatial light modulator, and a lens. The controller sets a modulation distribution of the spatial light modultor based on a two-dimensional pseudo random number pattern.

Abstract: A light irradiation device includes a Gaussian beam output unit for outputting light having a light intensity distribution that conforms to a Gaussian distribution, a spatial light modulator for receiving the light and modulating the light by presenting a CGH, an optical system for converging the modulated light, and an amplitude mask arranged on at least one of an optical axis between the Gaussian beam output unit and the spatial light modulator and an optical axis between the spatial light modulator and the optical system. The amplitude mask has a circular-shaped first region centered on the optical axis and an annular-shaped second region that surrounds the first region. Transmittance in the second region continuously decreases as a distance from the optical axis increases.

Abstract: An optical module includes: first and second optical elements; third and fourth optical elements; a first polarization control element and a first reflective light modulator that are sequentially arranged in one of a positive direction of a first vector and a negative direction of a second vector from the second optical element; a second polarization control element and a second reflective light modulator that are sequentially arranged in one of a negative direction of the first vector and a positive direction of the second vector from the third optical element; and a sliding mechanism that relatively moves the first and second optical elements and the third and fourth optical elements in the direction of the first vector relative.

Abstract: A portable device includes a reservation setting device which stores an automatic door opening command for automatically opening a door, and in a case where the portable device is moved close to a vehicle and authentication is established between the portable device and a door opening-closing control unit, the door opening-closing control unit automatically opens the door when receiving the automatic door opening command stored in the reservation setting device from the portable device. Accordingly, for example, in a case where a driver leaves the vehicle and then needs to return to the vehicle while holding an unexpectedly large amount of goods, the driver operates the portable device and reserves the automatic door opening command before returning to the vehicle so as to be able to automatically open the door when returning to the vehicle, and convenience is thereby improved.

Abstract: A vehicle wireless communication apparatus, including: a first portable device; a second portable device; a first receiver; a second receiver; a control apparatus; an in-vehicle communication network; and a relay unit, wherein, on receiving first directive data transmitted from the first portable device, the first receiver transmits first identification data of the first portable device to the relay unit; on receiving second directive data transmitted from the second portable device, the second receiver transmits second identification data of the second portable device to the relay unit; and on receiving the first identification data transmitted from the first portable device or the second identification data transmitted from the second portable device, the relay unit transmits more-recently received data to the control apparatus as identification data continuously at predetermined regular intervals.

Abstract: A vehicle wireless communication apparatus, including: a first portable device; a second portable device; a first receiver; a second receiver; a control apparatus; an in-vehicle communication network; and a relay unit, wherein, on receiving first directive data transmitted from the first portable device, the first receiver transmits first identification data of the first portable device to the relay unit; on receiving second directive data transmitted from the second portable device, the second receiver transmits second identification data of the second portable device to the relay unit; and on receiving the first identification data transmitted from the first portable device or the second identification data transmitted from the second portable device, the relay unit transmits more-recently received data to the control apparatus as identification data continuously at predetermined regular intervals.

Abstract: There is provided an antenna small in its size but capable of achieving sufficient gain. The antenna comprises antenna elements connected to a power source. The antenna elements comprise upstanding vertical sections connected to the power source and horizontal sections substantially parallel with a ground pattern and having one end thereof connected to an end portion of the vertical sections. The antenna elements further comprise short stubs provided away from the vertical sections toward the other end of the horizontal sections and connected to the ground pattern, and open-ended open stubs provided away from the short stubs toward the other end of the horizontal sections and extending from the horizontal sections toward the ground pattern. The antenna elements are made of a metal foil and are provided on an antenna board.

Abstract: There is provided an antenna small in its size but capable of achieving sufficient gain. The antenna comprises antenna elements connected to a power source. The antenna elements comprise upstanding vertical sections connected to the power source and horizontal sections substantially parallel with a ground pattern and having one end thereof connected to an end portion of the vertical sections. The antenna elements further comprise short stubs provided away from the vertical sections toward the other end of the horizontal sections and connected to the ground pattern, and open-ended open stubs provided away from the short stubs toward the other end of the horizontal sections and extending from the horizontal sections toward the ground pattern. The antenna elements are made of a metal foil and are provided on an antenna board.