Abstract: An eyeblink measurement system 10 is a measurement apparatus for measuring a subject's eyelid position, and includes a lighting device 1 that irradiates light extending across upper to lower eyelids of the subject's eye region E, and an image measurement device 2 that has an optical axis Ia on a plane for which a plane including an irradiation optical axis La of the light is rotated by a predetermined angle ? around an axis A1 along the light to be irradiated onto the subject, obtains height information based on the position of an optical image of the light in an image imaged, and measures the eyelid position based on the height information.

Abstract: An eye movement feature amount calculating system includes: a moving state input unit that inputs moving state values in a time series indicating a moving state of an eye of an examinee; a saccade period extracting unit that extracts a saccade period in which the eye performs saccadic movement based on time-series variation of the moving state values; and a feature amount calculating unit that divides a period including at least a part of the extracted saccade period into a plurality of periods and calculates a feature amount of eye movement of the subject based on the separate periods.

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: In the control of light condensing irradiation of laser light using a spatial light modulator, the number of wavelengths of the laser light, a value of each wavelength, and incident conditions of the laser light are acquired (step S101), the number of light condensing points, and a light condensing position, a wavelength, and a light condensing intensity on each light condensing point are set (S104), and a light condensing control pattern to be provided for the laser light is set for each light condensing point (S107). Then, a modulation pattern to be presented in the spatial light modulator is designed in consideration of the light condensing control pattern (S108). Further, in the design of a modulation pattern, a design method focusing on an effect by a phase value of one pixel is used, and when evaluating a light condensing state on the light condensing point, a propagation function to which a phase pattern opposite to the light condensing control pattern is added is used.

Abstract: An object is to simply and easily evaluate differences in behavior of the eyes of subjects. A binocular measurement system 1 includes a photodetector 7 that detects reflected light from the right eye ER and the left eye EL of a subject, and outputs image signal of the reflected light, a feature amount calculating unit 11 that calculates a feature amount corresponding to the right eye ER and a feature amount corresponding to the left eye EL based on the image signal, and a comparison value calculating unit 13 that calculates, based on the two feature amounts, a comparison value obtained by comparing the two feature amounts.

Abstract: A micro object control apparatus for controlling motion of a micro object within a medium includes a light source, an optical vortex generation unit, an objective lens, an imaging unit, an analysis unit, and a movement unit. The analysis unit acquires first motion information of the micro object based on the image data in which the micro object optically trapped with the optical vortex is imaged by setting the focal position of the optical vortex to a first position, acquires second motion information of the micro object based on the image data in which the micro object optically trapped with the optical vortex is imaged by setting the focal position of the optical vortex to a second position, and evaluates a state of an optical trap of the micro object with the optical vortex by comparing the first motion information and the second motion information.

Abstract: An eyeblink measurement method includes a step of detecting reflected light from a part including a target person's eyelid and eye and outputting an image signal of the reflected light, using a photodetector, a step of calculating a position of a corneal reflected light produced on the eye in the part and a position of the eyelid in the part based on the image signal, a step of correcting the position of the eyelid based on the position of the corneal reflected light, and a step of calculating a feature amount regarding blinking based on a temporal change in the corrected position of the eyelid.

Abstract: An eyeblink measurement system 10 is a measurement apparatus for measuring a subject's eyelid position, and includes a lighting device 1 that irradiates light extending across upper to lower eyelids of the subject's eye region E, and an image measurement device 2 that has an optical axis Ia on a plane for which a plane including an irradiation optical axis La of the light is rotated by a predetermined angle ? around an axis A1 along the light to be irradiated onto the subject, obtains height information based on the position of an optical image of the light in an image imaged, and measures the eyelid position based on the height information.

Abstract: A tablet terminal 1A is a measurement apparatus for measuring a subject's eyelid position, and includes a display section 3 that generates a vertically long light emitting region to make a reflection image form on a corneal surface of the subject's eyeball, a camera 5 that images the reflection image formed by the display section 3, and an arithmetic circuit 7 that derives reflection image information concerning a size or position of the reflection image based on image data of the reflection image obtained by the camera 5, and measures the eyelid position based on the reflection image information.

Abstract: A micro object control apparatus for controlling motion of a micro object within a medium includes a light source, an optical vortex generation unit, an objective lens, an imaging unit, an analysis unit, and a movement unit. The analysis unit acquires first motion information of the micro object based on the image data in which the micro object optically trapped with the optical vortex is imaged by setting the focal position of the optical vortex to a first position, acquires second motion information of the micro object based on the image data in which the micro object optically trapped with the optical vortex is imaged by setting the focal position of the optical vortex to a second position, and evaluates a state of an optical trap of the micro object with the optical vortex by comparing the first motion information and the second motion information.

Abstract: A patterned light interference generating device 1 is provided with a laser light source 10; a wavefront controller 20 for receiving laser light, presenting a hologram pattern to control the wavefront of the laser light, and outputting wavefront-controlled light; an imaging optical system 40 for imaging the wavefront-controlled light at a target position 2; a filter 50 arranged at a portion of concentration by the imaging optical system 40; and a control unit 30 for controlling the hologram pattern; the filter 50 has a plurality of slits in one-to-one correspondence to a plurality of bright spots of a desired order; each of the plurality of slits has an elongated shape extending radially from a center of the plurality of bright spots of the desired order; one end on the center side of each of the plurality of slits is separated from the center.

Abstract: In the control of light condensing irradiation of laser light using a spatial light modulator, the number of wavelengths, a value of each wavelength, and incident conditions of the laser light are acquired, the number of light condensing points, and a light condensing position, a wavelength, and a light condensing intensity on each light condensing point are set, and a light condensing control pattern is set for each light condensing point. Then, a modulation pattern presented in the spatial light modulator is designed in consideration of the light condensing control pattern. Further, in the design of a modulation pattern, a design method focusing on an effect by a phase value of one pixel is used, and when evaluating a light condensing state, a propagation function to which a phase pattern opposite to the light condensing control pattern is added is used.

Abstract: A solid-state imaging device 1 according to an embodiment of the invention includes: pixel units P(x, y) each of which includes a photoelectric conversion element and an amplifying unit for a pixel unit and which are two-dimensionally arranged; at least one row of optical black units Pob(x, y) each of which includes a photoelectric conversion element, an amplifying unit for a pixel unit, and a light shielding film that covers the photoelectric conversion element, the photoelectric conversion element and the amplifying unit for a pixel unit being the same as those of the pixel unit P(x, y); and at least one row of optical gray units Pog(x, y) each of which includes an amplifying unit for a pixel unit which is the same as that of the pixel unit and to which a reference voltage is input. The value of the reference voltage is less than the value of the output signal from the photoelectric conversion element in a saturated state.

Abstract: In the control of light condensing irradiation of laser light using a spatial light modulator, the number of wavelengths, a value of each wavelength, and incident conditions of the laser light are acquired, the number of light condensing points, and a light condensing position, a wavelength, and a light condensing intensity on each light condensing point are set, and a distortion phase pattern provided in an optical system including the spatial light modulator to the laser light is derived. Then, a modulation pattern presented in the spatial light modulator is designed in consideration of the distortion phase pattern. Further, in the design of a modulation pattern, a design method focusing on an effect by a phase value of one pixel is used, and when evaluating a light condensing state, a propagation function to which a distortion phase pattern is added is used.

Abstract: A light source device 1 includes a laser light source 10 and an optical phase modulator 15 or the like. The optical phase modulator 15 inputs coherent light output from the laser light source 10 and transmitted through a beam splitter 14, phase-modulates the light according to the position on a beam cross section of the light, and outputs the phase-modulated light to the beam splitter 14. When (p+1) areas sectioned by p circumferences centered on a predetermined position are set on a beam cross section of light input to the optical phase modulator 15, the more outside each of the (p+1) areas is, the wider the radial width of the area, the amount of phase modulation is constant in each of the (p+1) areas, and the amounts of phase modulation differ by ? between two adjacent areas out of the (p+1) areas.

Abstract: An eye movement measurement apparatus 1 measures movement of a cornea 101 by imaging a corneal reflection light image L2 generated as a result of irradiating the cornea 101 with infrared light L1. The eye movement measurement apparatus 1 includes: an imaging section 5 having a sensor section 51 including a plurality of pixels arrayed two-dimensionally, for generating imaging data including the corneal reflection light image L2 made incident on the sensor section 51; a bright spot position operation section 6 that calculates a position of the corneal reflection light image L2 in the imaging data; and a tremor signal operation section 7 that generates a third data string indicating a tremor component included in movement of the cornea 101 by calculating a difference between a first data string concerning temporal changes in position of the corneal reflection light image L2 and a second data string obtained by smoothing the first data string.