Abstract: An imaging optical system includes an optical component having a plurality of annular grooves formed to provide a phase to optical ray propagating an effective pupil, the phase causing the longitudinal aberration of the optical ray to alternate plural times to zigzag, and therefore, a focal-depth extended image being clear and having a large focal depth in a uniform image quality is achieved in a wide defocus range in front and back of a focal point.

Abstract: The cost and power consumption of an imaging apparatus are reduced by facilitating detection of an incident angle of a light beam transmitted through a grating substrate. An image sensor converts an optical image captured by pixels arranged on an imaging surface and outputs the converted image signal. A modulator is configured to modulate intensity of light; and an image processing circuit performs image processing of the output image signal. The modulator has a grating substrate, a grating pattern formed on a back surface side of the grating substrate arranged in proximity to the light receiving surface of the image sensor; and a grating pattern formed on a front surface facing the back surface. Each of the grating patterns is constituted of a plurality of concentric circles. The modulator performs intensity modulation on the light transmitted through the grating pattern and outputs the modulated light to the image sensor.

Abstract: Some embodiments provide a non-transitory machine-readable medium that stores a program. Upon receiving an email from a client device, the program determines a datamap from a plurality of datamaps that corresponds to the email. The program further uses the determined datamap to parse the email and extract data from the email. Based on the extracted data from the email, the program also determines that the email is a cancelation for a first event. The program further determines that the cancelation for the first event matches a second event of a collection of events. The program also associates the cancelation for the first event with the second event of the collection of events.

Abstract: The cost and power consumption of an imaging apparatus are reduced by facilitating detection of an incident angle of a light beam transmitted through a grating substrate. An image sensor converts an optical image captured by pixels arranged on an imaging surface and outputs the converted image signal. A modulator is configured to modulate intensity of light; and an image processing circuit performs image processing of the output image signal. The modulator has a grating substrate, a grating pattern formed on a back surface side of the grating substrate arranged in proximity to the light receiving surface of the image sensor; and a grating pattern formed on a front surface facing the back surface. Each of the grating patterns is constituted of a plurality of concentric circles. The modulator performs intensity modulation on the light transmitted through the grating pattern and outputs the modulated light to the image sensor.

Abstract: The cost and power consumption of an imaging apparatus are reduced by facilitating detection of an incident angle of a light beam transmitted through a grating substrate. An image sensor converts an optical image captured by pixels arranged on an imaging surface and outputs the converted image signal. A modulator is configured to modulate intensity of light; and an image processing circuit performs image processing of the output image signal. The modulator has a grating substrate, a grating pattern formed on a back surface side of the grating substrate arranged in proximity to the light receiving surface of the image sensor; and a grating pattern formed on a front surface facing the back surface. Each of the grating patterns is constituted of a plurality of concentric circles. The modulator performs intensity modulation on the light transmitted through the grating pattern and outputs the modulated light to the image sensor.

Abstract: An imaging optical system includes an optical component having a plurality of annular grooves formed to provide a phase to optical ray propagating an effective pupil, the phase causing the longitudinal aberration of the optical ray to alternate plural times to zigzag, and therefore, a focal-depth extended image being clear and having a large focal depth in a uniform image quality is achieved in a wide defocus range in front and back of a focal point.

Abstract: To reduce size and cost of a stereo camera and an onboard lighting unit. A stereo camera includes a first convex hyperboloidal mirror and a second convex hyperboloidal mirror that share a central axis and are vertically disposed with vertexes facing each other, an imaging optical system, and an image sensor. The second convex hyperboloidal mirror is formed of an outer circumferential hyperboloidal mirror and an inner circumferential hyperboloidal mirror that share the central axis with different conic constants, and an absolute value of the conic constant of the inner circumferential hyperboloidal mirror is greater than an absolute value of the conic constant of the outer circumferential hyperboloidal mirror.

Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.

Abstract: To reduce size and cost of a stereo camera and an onboard lighting unit. A stereo camera includes a first convex hyperboloidal mirror and a second convex hyperboloidal mirror that share a central axis and are vertically disposed with vertexes facing each other, an imaging optical system, and an image sensor. The second convex hyperboloidal mirror is formed of an outer circumferential hyperboloidal mirror and an inner circumferential hyperboloidal mirror that share the central axis with different conic constants, and an absolute value of the conic constant of the inner circumferential hyperboloidal mirror is greater than an absolute value of the conic constant of the outer circumferential hyperboloidal mirror.

Abstract: The cost and power consumption of an imaging apparatus are reduced by facilitating detection of an incident angle of a light beam transmitted through a grating substrate. An image sensor converts an optical image captured by pixels arranged on an imaging surface and outputs the converted image signal. A modulator is configured to modulate intensity of light; and an image processing circuit performs image processing of the output image signal. The modulator has a grating substrate, a grating pattern formed on a back surface side of the grating substrate arranged in proximity to the light receiving surface of the image sensor; and a grating pattern formed on a front surface facing the back surface. Each of the grating patterns is constituted of a plurality of concentric circles. The modulator performs intensity modulation on the light transmitted through the grating pattern and outputs the modulated light to the image sensor.

Abstract: The cost and power consumption of an imaging apparatus are reduced by facilitating detection of an incident angle of a light beam transmitted through a grating substrate. An image sensor converts an optical image captured by pixels arranged on an imaging surface and outputs the converted image signal. A modulator is configured to modulate intensity of light; and an image processing circuit performs image processing of the output image signal. The modulator has a grating substrate, a grating pattern formed on a back surface side of the grating substrate arranged in proximity to the light receiving surface of the image sensor; and a grating pattern formed on a front surface facing the back surface. Each of the grating patterns is constituted of a plurality of concentric circles. The modulator performs intensity modulation on the light transmitted through the grating pattern and outputs the modulated light to the image sensor.

Abstract: An image sensor has a plurality of pixels arranged in an array on an imaging surface and converts a captured optical image into an image signal. A modulator is provided on a light receiving surface of the image sensor and modulates the light intensity using a grating pattern. An image processor performs image processing of the image signal output from the image sensor. The modulator has a grating substrate and a first grating pattern is formed on a first side of the grating substrate adjacent to a light receiving side of the image sensor. The grating pattern is composed of a plurality of concentric circle patterns. Each concentric circle pattern has concentric circles having a pitch which becomes smaller in inverse proportion to the distance from the center thereof. The plurality of concentric circle patterns do not overlap with each other in the grating pattern.

Abstract: An imaging device includes: a modulator configured to modulate the intensity of light, based on a real pattern; an image sensor configured to convert light passing through the modulator to electrical signals to generate a sensor image; a complex sensor image processing unit configured to generate a complex sensor image including a complex number, from an image obtained by executing predetermined positioning for the sensor image taken through the real pattern; and an image processing unit configured to restore an image, based on an operation with the complex sensor image and data of a pattern for reconstruction.

Abstract: Some embodiments provide a non-transitory machine-readable medium that stores a program. Upon receiving an email from a client device, the program determines a datamap from a plurality of datamaps that corresponds to the email. The program further uses the determined datamap to parse the email and extract data from the email. Based on the extracted data from the email, the program also determines that the email is a cancelation for a first event. The program further determines that the cancelation for the first event matches a second event of a collection of events. The program also associates the cancelation for the first event with the second event of the collection of events.

Abstract: The diffraction lens has an incident side and an exit side that are both convexly shaped, includes an exit diffraction plane that has an absolute value for the order of diffraction of 5 or greater and is disposed on the exit side, and is shaped such that the absolute value of a curvature at the surface apex of an envelope surface of the exit diffraction plane is smaller than the absolute value of a curvature at the surface apex of an incident surface, or the absolute value of the amount of sag in the direction of the optical axis at an outer periphery of the envelope surface of the exit diffraction plane is smaller than the maximum absolute value of the amount of sag in the direction of the optical axis at an outer periphery of the incident surface.

Abstract: To obtain an imaging device capable of achieving high functionality of the imaging device by facilitating detection of an incident angle of light transmitted through a grating substrate.

Abstract: This imaging device comprises: an image sensor which converts an optical image, captured by pixels arranged in an array on an imaging surface, into an image signal and outputs the image signal; a modulation unit which is provided to a light-receiving surface of the image sensor and modulates the intensity of light; and an image processing unit which carries out image processing on an output image output by the image sensor. The modulation unit has a grating substrate and a first grating pattern formed on a first surface of the grating substrate facing a surface of the image sensor near the light-receiving surface. The grating pattern is configured from a plurality of concentric circles having pitches which are inversely proportional to the distance from the origin point of at least one reference coordinate, the concentric circles do not overlap with each other within the grating pattern.

Abstract: Provided is an optical component including multiple annular zones that each provides a predetermined phase to a light flux passing through an optical system, where for each of the annular zones, the surface closer to the inner circumference of the optical component is substantially equal in area to the surface closer to the outer circumference thereof, and in a cross section in the radial direction of the optical component, the tangent at an outer circumferential end of each annular zone is substantially equal in inclination to the tangent at an inner circumferential end thereof.

Abstract: An imaging device includes: a modulator with a first pattern, which is configured to modulate light intensity; an image sensor configured to convert light passing through the modulator to image data, and output the image data; and an image processing unit configured to restore an image on the basis of cross-correlation operation with the image data and pattern data that represents a second pattern.

Abstract: A phase filter 101 is configured to comprise an annular structure rotationally symmetrical about an optical axis, each annular zone including a cross-sectional shape of substantially parabola for uniformly extending incident rays of light on a focal plane and letting the rays overlap with each other.