Abstract: A photoelectric encoder includes an irradiation unit configured to apply first and second irradiation light beams having a first linear polarization direction, a scale configured to produce first and second diffraction light beams having the first linear polarization direction by diffracting the first and second irradiation light beams, respectively, the scale having a glass plate whose front surface has a grating shape, a polarizing unit configured to convert the first diffraction light beam into a third diffraction light beam having a second linear polarization direction which is perpendicular to the first linear polarization direction, to produce first and second composite light beams by combining the second diffraction light beam and the third diffraction light beam, and to convert the first composite light beam into a circularly polarized third composite light beam, and a light receiver configured to receive the second composite light beam and the third composite light beam.

Abstract: A method for calibrating a rotary encoder, in particular an incremental encoder, of an electrical machine, wherein the encoder has a number of reference marks and outputs a sine track and a cosine track. The electrical machine can be regulated to a specific speed, an angle of the electrical machine is determined with the aid of the sine track and/or the cosine track, from this an angular progression over time is ascertained, an oscillation in the angular progression over time with a frequency of substantially one integral multiple of the product of the specific speed and the number of reference marks is ascertained, and from this a correction factor the sine track and/or the cosine track is derived, wherein the amplitude of the oscillation is less than or equal to a limiting value. The invention further relates to an encoder evaluation and an electric motor having a rotary encoder.

Abstract: A light guide includes a first incident portion at an end side thereof near a light source, a stepped portion disposed on a rear surface side thereof in an axial direction and wholly reflects a portion of guided light, and a radiating portion disposed on a front surface side thereof in the axial direction that radiates the wholly reflected light forward. The light guide guides light that is incident through the first incident portion from front to back within the light guide. The stepped portion is a plurality of generally triangular prisms formed continuous in an extension direction, and has, in a cross section that follows an extension axis of the light guide and is parallel to a lamp optical axis, a long first projection surface that extends in the extension direction and a short second projection surface that forms an apex angle with the first projection surface.

Abstract: A collector transfers an emission of an EUV radiation source to a main intensity spot. The collector has at least one collector subunit including at least one grazing incidence mirror. The grazing incidence mirror transfers EUV radiation from the radiation source to an intensity spot. At least one ellipsoid mirror of the collector has an ellipsoidal mirror surface. The ellipsoidal mirror surface is impinged by an angle of incidence above a critical grazing incidence angle. No more than one collector subunit is arranged in the beam path of an EUV radiation source between a position of the EUV radiation source and the intensity spot. At least some of the EUV rays are only reflected in a grazing manner.

Abstract: A lens array has structures in which light of each light-emitting element in plural rows that has been incident on first lens faces in plural rows on a first plate-shaped portion is totally reflected by a second prism surface. The light of each light-emitting element is then divided by a reflection/transmission layer on a third prism surface to a side of second lens faces in plural rows on a second plate-shaped portion and a side of third lens faces in plural rows on the first plate-shaped portion. The light of each light-emitting element transmitted to the second lens face side is emitted by the second lens faces towards a side of end faces of an optical transmission body, and monitor light of each light-emitting element reflected towards the third lens face side is emitted by the third lens faces towards a side of light-receiving elements.

Abstract: A motion sensing device for sensing infrared rays, the motion sensing device includes a substrate; a sensing unit, configured on the substrate for sensing the infrared rays; a stabilizing layer, covering on the sensing unit for fixing and protecting the sensing unit, wherein the stabilizing layer has an opening; a protection layer, formed on the opening; and a coating layer, covering the stabilizing layer for absorbing infrared rays, wherein the coating layer does not cover the opening.

Abstract: A system for imaging an object is provided. The system includes a light source configured to emit light having a predetermined wavelength towards the object. The system further includes a metalens including a metallic film having a plurality of slits defined therethrough, the plurality of slits having a width a and a periodicity d that are both less than the predetermined wavelength, wherein the object is positioned between the light source and the metalens. The system further includes a detector configured to acquire measurements indicative of light transmitted through the metalens, and a computing device communicatively coupled to the detector and configured to reconstruct an image of the object based on the acquired measurements.

Abstract: Method and apparatus for obtaining qualitative and quantitative analysis of the optical properties or structures of tissue or turbid medium at one or more wavelengths via 1) detection at a single spatial location on the surface of a turbid medium (such as tissue) under two or more structured light conditions or 2) detection at two or more spatial locations on the surface under a single structured light condition.

Abstract: In one embodiment, an optical device comprising an emitter, first and second emitter optical elements and a receiver is disclosed. The emitter and the receiver may be arranged substantially along a longitudinal axis. The first and second emitter optical elements may be interposing the longitudinal axis. One other embodiment discloses an optical device comprising an emitter and a receiver arranged on a longitudinal axis. The optical device may further comprise first and second emitter optical elements arranged along an axis orthogonal to the longitudinal axis but interposing the longitudinal axis. In another embodiment, a proximity sensor having first and second emitters interposing a longitudinal axis is disclosed.

Abstract: A continuous loop of thermally conductive material is provided with a first portion in frictional contact with a casing of an electronic device and a second portion located within a cooling region. The loop is advanced such that the first portion is located within the cooling region and the second portion is in frictional contact with the casing.

Abstract: An optical system includes a first deformable lens having a membrane with a deformable portion. A sensor is configured to receive the light focused by the first deformable lens. An optical path extends through the first deformable lens and to the sensor. The first deformable lens is tuned according to an applied electrical signal in order to directly focus light traversing the optical path onto the sensor. A first volume of a first optical media and a second volume of a second optical media are defined at least in part by the deformable portion of the membrane. The first volume and the second volume are completely enclosed by the housing. The first volume and the second volume remain substantially constant for all configurations of the first deformable lens.

Abstract: A continuous loop of thermally conductive material is provided with a first portion in frictional contact with a casing of an electronic device and a second portion located within a cooling region. The loop is advanced such that the first portion is located within the cooling region and the second portion is in frictional contact with the casing.

Abstract: A method of monitoring particles in a stack comprises generating on a first side of the stack a beam of light directed towards a second, opposite, side of the stack. The beam is reflected back towards the first side of the stack and through the particles in the stack. An image is obtained of light scattered from the particles. The image is obtained using an imager positioned and oriented to have a field of view that includes unwanted scattered light. The method includes the step of blocking the unwanted scattered light from the image.

Abstract: Provided is a piezoelectric linear actuator. The piezoelectric linear actuator includes a slider having first and second surfaces facing each other, first and second plates spaced by predetermined distances from the first and second surfaces of the slider, respectively, a plurality of shear piezo stacks having one end fixed to the corresponding first or second plates, the plurality of shear piezo stacks being disposed toward the slider, and a friction member disposed on the shear piezo stacks to support the slider by a friction force with the slider. The slider includes a piezo plate expanding or contracting with respect to the shear piezo stacks according to a voltage applied thereto and a sliding member on each of both opposite surfaces of the piezo plate contacting the friction member.

Abstract: Optical analytical devices and their methods of use are provided. The devices are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices include optical waveguides for illumination of the optical reactions. The devices further provide for the efficient coupling of optical excitation energy from the waveguides to the optical reactions. Optical signals emitted from the reactions can thus be measured with high sensitivity and discrimination using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices of the invention are well suited for miniaturization and high throughput.

Abstract: A projection objective for imaging a pattern arranged in an object surface of the projection objective into an image surface of the projection objective with a demagnified imaging scale has a plurality of optical elements which are arranged along an optical axis of the projection objective and are configured so that a defined image field curvature of the projection objective is set such that an object surface that is curved convexly with respect to the projection objective is imaged into a planar image surface. Such projection objective, with a suitable setting of the object surface curvature, avoids the disturbing effect on the image quality that would otherwise result from gravitation-dictated bending of a mask.

Abstract: An image sensor including a plurality of sensing pixels, a plurality of micro-lenses disposed on the sensing pixels and a plurality of first light distributing elements disposed between the sensing pixels and the micro-lenses is provided. Each of the first light distributing elements includes a first refractive index pattern and a second refractive index pattern surrounding the first refractive index pattern. The refractive index of the first refractive index pattern is larger than the refractive index of the second refractive index pattern.

Abstract: A calibration device for a radiometer includes an integrating cavity and a honeycomb blackbody mounted to the integrating cavity. A plurality of emitters are mounted to the exterior rim of the integrating cavity for transmitting narrow band wavelengths of light into and out of the integrating cavity. A controller, selectively, activates one or more emitters to radiate a single narrow band wavelength of light during an ON period and turn OFF during another period. A plurality of reference detectors are also mounted to the exterior rim of the integrating cavity for measuring the intensity of each narrow band radiation outputted from the integrating cavity. The reference detectors are effective in determining changes in intensity output by each of the narrow band emitters from the integrating cavity. The measured changes in intensity outputted by the emitters are used to calibrate the radiometer with the changes traced back to a NIST standard.

Abstract: A microscope for observing a specimen, while switching optical-path splitting portions, by using bright images without a positional displacement between the images, includes an optical-axis moving portion that parallelly moves laser light; a scanning portion; an objective lens; a detector; a plurality of excitation dichroic mirrors placed in an optical path in an insertable/removable manner and split the optical path; an excitation DM turret that selectively switches the excitation dichroic mirrors; a storage portion storing entry-angle displacement information and transmitting-position displacement information for the laser light at the pupil position of the objective lens, which are associated with the individual excitation dichroic mirrors; and a control portion controlling the scanning portion based on the entry-angle displacement information associated with an excitation dichroic mirror placed in the optical path and also controlling the optical-axis moving portion 15 based on the transmitting-position d

Abstract: An information input device includes: an input panel having an effective photo-detectable region in which a plurality of photodetectors are arranged for detecting an external proximity object, and having a shading region located in a margin of the effective photo-detectable region; a correction section performing outermost-region correction on an outermost photo-detection signal to increase intensity thereof, the outermost photo-detection signal being obtained from a photodetector located in an outermost-region of the effective photo-detectable region; and an image processor acquiring object information about one or more of a position, a shape and size of the external proximity object based on a resultant photo-detection signal obtained from the outermost-region correction.

Abstract: An optical-electrical connector (100) having an end for mating with an electrical connector and an opposite end coupling with an optical medium, includes a thermal conductive shell (10), a printed circuit board assembly (20) received in the thermal conductive shell, and an optical-electrical module (50). The printed circuit board assembly includes a printed circuit board (21) including a thermal conductive layer (214) thermal conductively connected with the metal shell. The optical-electrical module is mounted on the printed circuit board and is in contact with the thermal conductive layer, heat produced by the optical-electrical module being transmitted to the thermal conductive shell by the thermal conductive layer.

Abstract: An optical device which reduces coupling loss while improving practicality is provided. A multi-core fiber coupling device is an optical device which couples a multi-core fiber to single core fibers, and includes a first optical system which is located on optical axes of a plurality of beams emitted from the multi-core fiber, and which makes the optical axes of the respective beams non-parallel to each other, thereby making the beams in a state of being separated from each other, and a second optical system S2 which makes the optical axes of the plurality of beams in a state of being non-parallel to each other on the side of the first optical system, in a state of being approximately parallel to each other.

Abstract: A two-sided-access (TSA) eWLB is provided that makes it possible to easily access electrical contact pads disposed on both the front and rear faces of the die(s) of the eWLB package. When fabricating the IC die wafer, metal stamps are formed in the IC die wafer in contact with the rear faces of the IC dies. When the IC dies are subsequently reconstituted in an artificial wafer, portions of the metal stamps are exposed through the mold of the artificial wafer. When the artificial wafer is sawed to singulate the TSA eWLB packages and the packages are mounted on PCBs, any electrical contact pad that is disposed on the rear face of the IC die can be accessed via the respective metal stamp of the IC die.

Abstract: The invention relates to a surface light source with a lighting surface that includes at least one semiconductor body that emits electromagnetic radiation from its front side during operation. Decoupling structures are suitable for producing a local variation of the light density on the lighting surface, so that the light density is increased in at least one illumination area with respect to a background area.

Abstract: A scanning optical microscope includes a light source; a first beam splitter that splits light into irradiation light and reference light; a first objective lens that converges the irradiation light on a sample and receives signal light; a second beam splitter that splits the signal light off from an optical path; a pin hole positioned on an optical path of the split signal light at a position optically conjugate with an image-forming point of the first objective lens; a condenser lens that converges the split signal light on the pin hole; a phase plate that outputs first light including at least four firstly-split beams having different phases; a third beam splitter that multiplexes the first light and second light to generate interfering light including at least four secondly-split beams having different phases; and a light detecting element that receives the interfering light and outputs at least four electric signals.

Abstract: Techniques for generating 3-D holographic images of a 3-D real or synthetic object scene are presented. A holographic generator component (HGC) can obtain a real or synthetic 3-D object scene. The HGC generates a high-resolution grating, and generates a low-resolution mask based on the 3-D object scene. The HGC overlays the mask on the grating to generate the hologram, which can be a digital mask programmable hologram. The HGC can use the grating as an encryption key, if desired, wherein the mask can be encrypted based on the encryption key. The display component receives the hologram and can generate holographic images, based on the hologram, and display the holographic images using one or more low-resolution displays. The grating and display can be arranged in various formations in relation to each other. A single display can be partitioned into a tile structure for displaying holographic images in the respective tiles.

Abstract: An image sensor module is provided. The image sensor module includes a circuit board, a flat material, an image sensing chip, a holder and a covering plate. The flat material disposed on an assembling surface of the circuit board has a supporting surface and a bottom surface opposite thereto. The image sensing chip with its base surface facing to the supporting surface is configured on the supporting surface. The holder is disposed on the flat material, and the bottom plane of the holder faces to the supporting surface. The supporting surface is used to make the base surface parallel to the bottom plane. The covering plate is arranged on the holder to seal the image sensing chip.

Abstract: A lens holding frame includes a plurality of conical protrusions. The plural conical protrusions include a pitch of greater than or equal to 0.1 mm and less than or equal to 2.0 mm.

Abstract: A multi-channel optical device and method of making the same are disclosed. The optical device includes a plurality of detectors on a detector mounting substrate, and a corresponding plurality of lenses on an interior surface of the optical device. Each detector detects light having a unique center wavelength. Each center wavelength corresponds to a channel of the optical device. Each lens focuses light towards a corresponding detector. Each detector has a location corresponding to a focal point of the light focused by a corresponding lens. The method of making the optical device includes placing lenses on a surface of the optical device housing, transmitting light having a plurality of center wavelengths through the lenses, determining locations on a detector mounting substrate where each light beam is focused by a lens, and placing a detector at each location.

Abstract: A solid-state imaging apparatus includes unit pixels each having a light-collecting element for collecting incident light, the light-collecting element: is divided into a plurality of zones each having a ring shape of concentric structure and a line width shorter than a wavelength of the incident light; and has an effective refractive index distribution controlled according to a combination of the zones, and in at least one of the zones, a light-transmissive film which is included in the zone is divided in a circumferential direction of the concentric structure at an interval shorter than the wavelength of the incident light.

Abstract: Disclosed is an arrangement for detecting first light (L1) and second light (L2), with the first light (L1) and second light (L2) having no wavelength in common. The arrangement includes a first effective detector area (D1) and a second effective detector area (D2). The first effective detector area (D1) is exposed to the first light (L1) and/or second light (L2) different from the first light (L1) and/or second light (L2) to which the second effective detector area (D2) is exposed when the arrangement is exposed to spatially uniformly distributed first light (L1) and second light (L2). The difference between the first light (L1) and/or second light (L2) to which said first detector area (D1) and second detector area (D2) are exposed to can be a difference in intensity and/or difference in an angle of incidence relative to the arrangement.

Abstract: An automobile includes a main body, and an infrared detecting unit on the front portion of the main body. The infrared detecting unit includes an infrared emitter connected to a motor, and an infrared receiver. An anti-collision method includes controlling the motor to rotate to rotate the infrared emitter. Controlling the rotating infrared emitter at each rotated position to emit infrared lights with an effective projection range L which form an illuminating trajectory spaced from the front portion by a distance S. Calculating a height of a protruding portion on the road surface according to the effective projection range L, the distance S, and the distance between the infrared detecting unit and the road surface H, if the infrared receiver receives the reflected infrared lights reflected by the protruding portion. Actions are preformed to protect the automobile if the calculated height is greater than a preset value.

Abstract: An extended depth of field microscope system for phase object detection includes an imaging optical module and a phase/intensity converting module. The imaging optical module has an object lens group, in which an axial symmetric phase coding is added, to produce an axial symmetric spherical aberration. A point spread function (PSF) and an image with extended depth of field can be obtained with a predetermined level of similarity. The phase/intensity converting module converts the phase change of the light passing the phase object, into an image light with change of light intensity.

Abstract: A lens array is provided with a prism adhered within a prism placement recessing section by an adhesive, wherein retention of air-bubbles in the adhesive on an optical path of light of each light-emitting element between the prism placement recessing section and the prism is prevented by a first air-bubble retention prevention recessing section and a second air-bubble retention prevention recessing section that communicate with the prism placement recessing section in a lens array direction, and flowing of the adhesive onto a total reflection surface is prevented by an adhesive flow prevention recessing edge section.

Abstract: An optical system for producing color images includes: an objective lens system having an entrance aperture; a multi-faceted prism positioned at the entrance aperture of the objective lens system and including at least a first face having a first optical filter formed thereon and a second face having a second optical filter formed thereon; and a monochromatic detector array positioned to receive light from the objective lens system. The multi-faceted prism intercepts light from a scene and splits a pupil of the objective lens system into two or more spectrally separated sub-images which are projected onto the monochromatic detector array.

Abstract: A plurality of edges of sensor substrates are connected in a longitudinal direction in a sensor substrate unit. Farthest tips of sensor chips at the edges of the sensor substrates are positioned inside of farthest edges of the edges in the longitudinal direction. The edges of the connected sensor substrates overlap each other in a thickness direction of the sensor substrates in plan view.

Abstract: Microscope and method for detecting sample light, having at least one illuminating beam which is partially phase-modulated with a modulation frequency along the cross section thereof and a microscope objective for intensity-modulated focusing of the illuminating beam into a sample. The microscope has a detection beam path that has at least one demodulator. At least one electro-optical modulator (EOM) is used for phase modulation of at least a part, preferably half, of the illuminating beam, or different portions or halves of the illuminating beam are modulated differently, preferably anti-phase, by anti-phase control of piezoelectric elements, or acousto-optical modulators for splitting into a plurality of partial beam paths. Optic elements are provided for partial phase modulation of the excitation beam.

Abstract: An ice detecting apparatus for an ice maker provided in a refrigerator includes an ice maker, and an ice detecting sensor attached to the ice maker and detecting an amount of ice collected in an ice container. The ice detecting sensor includes at least one optical transmitter or emitter provided on one side of the ice maker and at least one receiver at another side of the ice maker. The optical transmitter and receiver are separated by a prescribed distance and, at least one heater is provided to generate heat to be transferred to at least one of the optical transmitter or receiver.

Abstract: A corner reflector of an armored vehicle includes a housing having a look-in aperture of a subregion extending into a vehicle interior, a look-out aperture of a subregion extending out of the vehicle and at least one prism body or deflection mirrors disposed in the housing, to provide effective shielding against sources of electromagnetic interference. Providing the corner reflector on all sides with a shield made of electrically conductive material ensures that vehicles equipped therewith or individual electronic components thereof cannot be influenced or rendered unusable by sources of electromagnetic interference.

Abstract: A camera module and a fabrication method thereof are provided. The camera module includes a lens structure and an image sensor device chip disposed under the lens structure. The lens structure includes a transparent substrate and a lens disposed on the transparent substrate. A spacer is disposed on the transparent substrate to surround the lens, wherein the spacer contains a base pattern and a dry film photoresist. The method includes forming a base pattern on a carrier and attaching a dry film photoresist on the carrier. The dry film photoresist is planarized by a lamination process and then patterned to form a spacer. A transparent substrate having a plurality of lenses is provided. The spacer is stripped from the carrier, attaching on the transparent substrate to surround each of the lenses, and then bonded with image sensor device chips.

Abstract: A lamp including a light source, a reflective unit and a light modulation module is provided. The light source provides an illuminating light, and the reflective unit reflects the illuminating light. The light modulation module is disposed between the light source and the reflective unit. In the light modulation module, a region where movable light absorbing materials exist is a light absorbing region, and a region where the movable light absorbing materials are absent is a light penetration region. By applying different electrical fields to the movable light absorbing materials, sizes and locations of the light absorbing region and the light penetration region can be changed. A portion of the illuminating light irradiating the light penetration region penetrates through the light penetration region, is transmitted to the reflective unit, being reflected by the reflective unit, and penetrates through the light penetration region again sequentially.

Abstract: Technologies are generally described for providing and using a material including: a template molecule; a first cluster of one or more nanoparticles located at a first site on the template molecule; and a second cluster of one or more nanoparticles located at a second site on the template molecule and spaced apart from the first cluster. In some embodiments, the first and second clusters of nanoparticles exhibit a plasmon resonance having a first resonant peak and a second resonant peak.

Abstract: Light field imaging systems, and in particular light field lenses that can be mated with a variety of conventional cameras (e.g., digital or photographic/film, image and video/movie cameras) to create light field imaging systems. Light field data collected by these light field imaging systems can then be used to produce 2D images, right eye/left eye 3D images, to refocus foreground images and/or background images together or separately (depth of field adjustments), and to move the camera angle, as well as to render and manipulate images using a computer graphics rendering engine and compositing tools.

Abstract: The number of detection channels of detecting sections is increased and the detecting sections are replaced easily and at low cost while suppressing loss in the quantity of returning light. Provided is a detection unit (5A) including a detector entrance port (75A) through which light in a predetermined optical form enters, a detector (57A) that detects at least a portion of the light entering through the detector entrance port (75A), and a detector exit port (65A) through which at least another portion of the light entering through the detector entrance port (75A) can exit in the same optical form.

Abstract: The invention provides, in some aspects, devices for image acquisition that use seals between concentrically disposed portions of an enclosure and an optics assembly in order to protect image acquisition components from the surrounding environment while providing adequate friction for both adjusting and locking focus. Such devices can include an image capture medium that is disposed within an enclosure and an optics assembly that is also disposed within that enclosure. The optics assembly, which includes at least a lens, can have a cylindrical outer diameter along at least a portion of its length that is received within the enclosure along a length that has a corresponding cylindrical inner diameter. A first seal is disposed between, and in contact with, the optics assembly and the enclosure. That seal permits rotation of the optics assembly for purposes of focusing the lens, while preventing contamination from the environment from entering into the enclosure.

Abstract: The present invention provides, in addition to other things, methods, systems, and apparatuses that involve the use of an optical fiber with grating and particulate coating that enables simultaneous heating; optical detection; and optionally temperature measurement. Methods, systems, and apparatuses of the present invention may be used in many applications including isothermal and/or thermal cycling reactions. In certain embodiments, the present invention provides methods, systems, and apparatuses for use in detecting, quantifying and/or identifying one or more known or unknown analytes in a sample.

Abstract: An optical receiver module includes: a lens array including a plurality of condenser lenses arranged in one direction to define a plane with optical axes in parallel to each other; and a light receiving element array including a plurality of light receiving elements each configured to receive light emitted from each of the condenser lenses. The light receiving element array includes: a semiconductor substrate to which the light from each of the condenser lenses is input and through which the light is transmitted; and light receiving portions each configured to receive the light transmitted through the semiconductor substrate and convert the light into an electrical signal. A shift of the optical axis of each of the condenser lenses from a center of each corresponding one of the light receiving portions is larger in a direction perpendicular to the one direction within the plane than in the one direction.

Abstract: An optical element includes a refractive index pattern that is periodically formed by a plurality of media having refractive indices different from each other. The highest diffraction order for a light beam of a first wavelength region that enters the optical element is greater than the highest diffraction order for a light beam of a second wavelength region that is longer than the first wavelength region, and the light beams of the first wavelength region and the second wavelength region are emitted so that each of the light beams of the first wavelength region and the second wavelength region is periodically localized.

Abstract: An accessory mounting system for mounting an electronic device at a windshield of a vehicle includes a bracket. The bracket is configured to mount at an interior surface of the vehicle windshield. The bracket includes an attaching structure configured to attach the bracket at the interior surface of the vehicle windshield. The bracket may include a support frame coupled to an attaching structure and to an adjustable support of an interior rearview mirror assembly. The support frame may have a set off portion set off from the interior surface of the windshield to accommodate an electronic device between the windshield and the set off portion.

Abstract: According to one embodiment, a solid-state imaging device including a plurality of pixels two-dimensionally arranged at a preset pitch in a semiconductor substrate is provided. Each of the pixels is configured to include first and second photodiodes that photoelectrically convert incident light and store signal charges obtained by conversion, a first micro-lens that focuses light on the first photodiode, and a second micro-lens that focuses light on the second photodiode. The saturation charge amount of the second photodiode is larger than that of the first photodiode. Further, the aperture of the second micro-lens is smaller than that of the first micro-lens.