Abstract: The present embodiment relates to a light transmission band change unit comprising: a base including a first axis; a blade arranged on the base and including a body, which has a first hole having a lens and an infrared pass filter arranged therein, a second hole having an infrared cut filter arranged therein, and a third hole into which the first axis is inserted; a magnet arranged between the base and the blade; a core coupled with the base and having a coil arranged thereon; and a blade cover including an upper plate arranged on the blade so as to have a fourth hole formed at a position corresponding to the lens, wherein at least a portion of the lens is arranged within the fourth hole.

Abstract: A modeling system is provided, including a light-emitting source, a chromatic aberration member, and a receiving module. The light-emitting source can emit a mixed light, including a main light having a first wavelength and a sub-light having a second wavelength. The main light and the sub-light are emitted along an emission path and toward an object, and they are reflected by the object after reaching it. The chromatic aberration member is disposed on the emission path. The receiving module includes a main body, a receiving member, a space filtering member, and a first driving assembly. The receiving member is disposed on the main body. After being reflected, the main light and the sub-light move along a reflecting path and reach the receiving member. The space filtering member is disposed on the reflecting path. The first driving assembly can drive the space filtering member to move.

Abstract: An information processing apparatus includes: an image acquiring unit configured to acquire a plurality of types of images including a plurality of confocal images obtained by imaging an eye at different times, and a plurality of non-confocal images temporally corresponding to the plurality of confocal images; and an information acquiring unit configured to acquire information indicating a positional gap of at least one of the plurality of types of images, based on the plurality of non-confocal images.

Abstract: A displacement sensor includes a linear light source which emits a linear beam, a beam splitter, a line sensor, and an imaging lens. The linear light source is disposed with an inclination of a predetermined angle with respect to a perpendicular line of an optical axis of the imaging lens. The imaging lens forms an image of the linear light source at a position conjugate with the linear light source with an inclination of a predetermined angle with respect to the perpendicular line of the optical axis of the imaging lens. The beam splitter is disposed between the linear light source and the imaging lens. The line sensor is disposed at a position conjugate with the image formed by the imaging lens through the imaging lens and the beam splitter so that the optical axis of the imaging lens has the inclination of the predetermined angle with respect to the perpendicular line of the optical axis reflected by the beam splitter.

Abstract: A super resolution microscope system is disclosed and described. The system can include a sample stage (180) adapted to receive a sample (185) including probe molecules. At least one light source (105) is provided to produce a coherent excitation light to excite the probe molecules and cause luminescence of the probe molecules. An image detector (100) can detect the luminescence from the probe molecules. A microlens array (125) can be positioned in a beam path (110) of the coherent light from the at least one light source (105). The beam path (110) of the coherent light extends between the light source (105) and the sample stage (180). The microlens array (125) can also be positioned in a beam path (112) of the luminescence from the probe molecules. The beam path (112) of the luminescence extends between the sample stage (180) and the image detector (100).

Abstract: A device for microscopic examination includes an image output unit, at least two image input units, which are arranged in a spatially distributed manner and which have different sample receiving regions, at least one object carrier unit which supports at least one sample, in particular at least one biological sample, and includes a coupling unit, which couples the image output unit and one of the at least two image input units optically to form a microscope unit.

Abstract: A confocal measuring device capable of enlarging a measurement range using a compact device configuration is provided. A confocal measuring device (1A) is configured to include: a diffractive lens (11) that causes chromatic aberration in light emitted from a white LED light source (21); a diffractive lens (13b) that increases chromatic aberration of light passing through the diffractive lens (11); and an objective lens (12) that condenses light into a measurement target range such that the condensed light has chromatic aberration along an optical axis.

Abstract: A microscope apparatus provided with: a disk unit obtained by integrally forming a pinhole array disk in which pinholes are arranged and a microlens array disk in which microlenses are arranged; a dichroic mirror focusing illumination light that has been transmitted through the microlenses of the disk unit, on the corresponding pinholes and splitting off fluorescence from a specimen that has passed through the pinholes in the reverse direction from the illumination light; an objective lens radiating the illumination light that has passed through the pinholes onto the specimen and focusing the fluorescence from the specimen on the pinholes; an illumination-light-axis adjustment mechanism adjusting the position and the angle of the optical axis of the illumination light; an installation-angle adjustment mechanism adjusting the installation angle of the disk unit; and a unit insertion/removal mechanism removably supporting the disk unit onto the optical axis of the illumination light.

Abstract: The subject disclosure is directed towards active depth sensing based upon moving a projector or projector component to project a moving light pattern into a scene. Via the moving light pattern captured over a set of frames, e.g., by a stereo camera system, and estimating light intensity at sub-pixel locations in each stereo frame, higher resolution depth information at a sub-pixel level may be computed than is captured by the native camera resolution.

Abstract: Provided herein is an apparatus, including a reflective surface configured to reflect photons onto a surface of an article, a stage configured to support the article, and an assembly. The assembly is configured to radiate photons through the article to the reflective surface. The assembly is further configured to image the article with irradiance of the photons.

Abstract: To provide a user with descriptive images for each function performed by a button, the embodiments described herein use a transforming graphical expression that presents different images depending on the particular function the button is currently performing. For example, if the button is used to increase speaker volume, the graphical expression may display plus sign, but if the button is currently being used to navigate through a display menu, the graphical expression may be transformed into an arrow to indicate the direction a selection element in the menu moves if the button is activated. Thus, as the current function of the button changes, the graphical expression presented to the user also changes. In this manner, the same button may be used to perform multiple functions while presenting to a user a customized graphical expression indicating the current function of the button.

Abstract: Methods and apparatus for using optical chains, e.g., camera modules, with different lens configurations to support a wide range of focal lengths are described. In some embodiments a camera device includes a plurality of optical chains. In at least some embodiments non-circular outer lenses are used for optical chains with large focal lengths while optical chains of the same camera device which have smaller focal lengths use round outer lenses. Thus an exemplary camera device supports a number of different focal lengths.

Abstract: A microscope and a method of microscopy use structured illumination, involving imaging a grid structure or periodic light distribution on a sample. By displacing the image of the grid structure, imaging is carried out under different phase positions, and a high-resolution sample image is calculated from the recorded images. The grid structure or light distribution is generated by using at least two phase grids arranged one in front of the other, and different orientations of the light distribution perpendicular to the illumination direction are generated by displacing the phase grids relative to one another, with displacement, imaging and calculation being carried out for different orientations.

Abstract: An apparatus includes a three dimensional array of light receptors disposed within a substrate having a light receiving surface, where light receptors disposed closer to the light receiving surface are responsive to light having shorter wavelengths than light receptors disposed further from the light receiving surface, and where each light receptor is configured to output a binary value and to change state between an off-state and an on-state by the absorption of at least one photon.

Abstract: A microscope illumination system includes a first light source configured to provide light along an optical axis and an aperture device including an aperture wheel that is rotatable about an axis of rotation. The aperture wheel includes a plurality of apertures of varying size disposed circumferentially on the aperture wheel. The aperture wheel is rotatable so as to dispose each of the apertures in a position that is centered on the optical axis so as to generate an illumination beam path that extends in a centered relationship with respect to the optical axis, and so as to dispose each of the apertures in a position that is off-center from the optical axis and that is within a defined region around the optical axis so as to generate an illumination beam path that extends off-center from the optical axis for oblique incident illumination.

Abstract: An imaging system which includes a housing for a radiation detector having a window disposed above and in axial alignment with the radiation detector, a variable aperture assembly which includes a base ring having a first opening and mounted on the radiation detector housing such that the first opening is in axial alignment with the window, a plate having a first aperture and adapted to engage the base ring such that the first aperture is disposed over the window, at least one aperture blade each operatively coupled to the base ring, and an aperture drive mechanism having a body and an actuator coupling member extending at an angle from the body. In addition, the imaging system includes an actuator assembly having an actuator and an actuator arm, the actuator arm disposed adjacent to the radiation detector housing in proximity to the actuator coupling member.

Abstract: A versatile beam scanner for generating a far-field scanned pencil beam, and, alternatively, a far-field pencil beam. An angle selector limits the angular extent of an inner fan beam emitted by a source of penetrating radiation. The source and angle selector may be translated, along a direction parallel to a central axis of a multi-aperture unit, in such a manner as to generate a scanned far-field pencil beam, when rings of apertures are interposed between the source and an inspected target, or, alternatively, a far-field fan beam, when no ring of apertures is interposed.

Abstract: Apparatus for interrupting and/or scanning a beam of penetrating radiation, such as for purposes of inspecting contents of a container. A source, such as an x-ray tube, generates a fan beam of radiation effectively emanating from a source axis, with the width of the fan beam collimated by a width collimator, such as a clamshell collimator. An angular collimator, stationary during the course of scanning, limits the extent of the scan, and a multi-aperture unit, such as a hoop, or a nested pair of hoops, is rotated about a central axis, and structured in such a manner that beam flux incident on a target is conserved for different fields of view of the beam on the target. The central axis of hoop rotation need not coincide with the source axis.

Abstract: An imaging system which includes a housing for a radiation detector having a window disposed above and in axial alignment with the radiation detector, a variable aperture assembly which includes a base ring having a first opening and mounted on the radiation detector housing such that the first opening is in axial alignment with the window, a plate having a first aperture and adapted to engage the base ring such that the first aperture is disposed over the window, at least one aperture blade each operatively coupled to the base ring, and an aperture drive mechanism having a body and an actuator coupling member extending at an angle from the body. In addition, the imaging system includes an actuator assembly having an actuator and an actuator arm, the actuator arm disposed adjacent to the radiation detector housing in proximity to the actuator coupling member.

Abstract: A light quantity adjustment apparatus includes a pair of substrates having a light-path aperture; a plurality of diaphragm blades disposed between the pair of substrates; a driving ring that opens and closes the plurality of diaphragm blades; and a driving device. The plurality of diaphragm blades is supported by the substrate via a first guide plate made of a resin film. The substrate and the first guide plate are provided with guide grooves fitted into protrusions formed in the plurality of diaphragm blades to guide the blades. Guide grooves of the substrate are formed of concave grooves. Guide grooves of the first guide plate are formed of through holes. The through holes of the first guide plate have a narrower width than the concave grooves of the substrate to engage in the protrusions of the diaphragm blades and to guide the diaphragm blades in the open and close direction.

Abstract: A microscope has an aperture arrangement that, in order to limit the dimension of a light beam, comprises an aperture opening. The size of the aperture opening is adjustable with the aid of a first aperture member and a second aperture member. At least one of the two aperture members is movable relative to the other aperture member. The aperture members are spaced apart from one another when the aperture opening is closed.

Abstract: An optical shutter apparatus has at least one shutter blade that is movable between a first position blocking at least a portion of an aperture and a second position spaced apart from the first position. A linkage member is coupled to the at least one shutter blade and has a magnetic material. An actuator is coupled to the linkage member and is energizable to translate the at least one shutter blade between the first and second positions. An intermediate plate has a friction surface of a non-magnetic material. A magnet positioned away from the friction surface of the intermediate plate is disposed to urge the linkage member against the friction surface of the intermediate plate.

Abstract: This disclosure provides systems, methods and apparatus for a multi-state shutter assembly. The multi-state shutter assembly can be used in an electronic display. The shutter assembly can include a movable light obstructing component. The shutter assembly also can include first and second actuators configured to move the light obstructing component between three states, including a fully light obstructive state, a substantially transmissive state, and a partially transmissive state. At least one of the three states is a neutral state in which both the first and second actuators are in an unactuated state. The shutter assembly also can include a controller configured to control the first and second actuator to selectively move the light obstructing component into each of the three states.

Abstract: A blade drive device includes: a board including an opening; a first blade movable toward and away from the opening, and including: a first slot; and first and second aperture openings each of which is smaller than the opening; a second blade movable toward and away from the opening and including a second slot; a first drive member including a first drive pin that engages the first slot and that is rotatable about a predetermined position; and a second drive member including a second drive pin that engages the second slot and that is rotatable about a predetermined position.

Abstract: An optical switching assembly having an optical path therethrough includes an optical element, a base frame, an optical support that supports the optical element and is pivotably mounted to the base frame, and a linkage. The linkage interconnects the base frame and the optical support to effect movement of the optical support between an aligned position where the optical element is in the optical path and a non-aligned position removed from the aligned position. The linkage has two over-center positions that respectively correspond to the aligned position and the non-aligned position. No additional energy is required to hold the linkage in the over-center positions.

Abstract: A light quantity adjustment apparatus has a board including an exposure aperture, blade members adjusting a quantity of light passing through the exposure aperture, and a driving device for driving the blade members. The driving device is provided with an electromagnetic coil, a magnet rotor rotating by applying a current to the electromagnetic coil, a rotating shaft, a coil frame having bearings, a reference surface for positioning formed in the coil frame, and a shield yoke supported relative to the reference surface and magnetically shielding the magnet rotor. The board includes a support plane supporting the blade members, a concave portion in the support plane to store the driving member, a support portion in the concave portion to support one end of the shield yoke, and a holding device for storing and supporting the driving member in the concave portion.

Abstract: A display apparatus includes a first substrate and a second substrate. The first substrate includes a light blocking layer and the second substrate includes a shutter part. The shutter part includes first, second, third, and fourth operators and a shutter. The first, second, third, and fourth operators are operated independently from each other in response to first, second, third, and fourth voltages, respectively. The shutter is connected to the first to fourth operators to be rotationally moved. Thus, the display apparatus display may display various gray scales.

Abstract: To provide a mechanism in which a moving body can be stored in a housing. A gate valve has a slide plate and a moving mechanism for changing the positions in the radial and axial directions of the slide plate. A shaft is a rotating shaft the axial displacement of which is controlled by an axial driving mechanism and the angle of rotation of which is controlled by a radial driving mechanism, and is turnably supported in the housing by a shaft supporting spring consisting of a magnetic bearing and a conical coil spring. By controlling the attraction force of a balance weight in an electromagnet, the shaft can be moved in the radial direction. Also, by controlling the attraction force of an electromagnet target in the electromagnet, the shaft can be moved in the axial direction.

Abstract: The present application generally describes several microelectromechanical systems (MEMS) including apparatuses, devices and systems configured for actuating a microdevice such as a shutter for use in a mobile terminal camera. One preferred embodiment described herein can include an apparatus including a curtain substantially disposed in a plane; an actuator mechanically connected to the curtain; and a voltage supply electrically connected to the actuator such that in response to a predetermined voltage the actuator thermally expands and thereby causes displacement of the curtain within the plane.

Abstract: The light-amount-adjustment apparatus includes a base member formed with cam-groove portions, and light-blocking blades forming a variable light-passing aperture and each of which is provided with a driving pin and a cam pin, the cam pin engaging one of the cam-groove portions. The apparatus also includes a driving ring disposed on a side of the blades opposite from the base member and rotating with respect to the base member to transmit a driving force to the driving pins so as to rotate the light-blocking blades. A base-member side face of each light-blocking blade is supported by the base member. The driving ring is formed with first blade-supporting portions protruding from a ring-shaped portion outward in a radial direction and including a driving-hole portion with which the driving pin engages. Each first blade-supporting portion supports an opposite-side blade face opposite to the base-member side blade face of a light-blocking blade.

Abstract: The invention relates to an improved apparatus and method for the design and manufacture of MEMS anchoring structures for light modulators in order to address the stresses of beams mounted on them.

Abstract: A light scanning microscope with an illumination module generates several illumination beams and moves them, in each case as a spot, in a predefined region of a sample to excite sample radiation. A detector module for confocal detection of the sample radiation excited by each spot includes a first detector, an imaging lens system, having an optical axis, for imaging the predefined region along an imaging beam path running from the sample as far as the first detector, and a rotatable diaphragm with several pinholes located in a pinhole plane. The diaphragm, upon rotation, may be located at least partially in the imaging beam path for confocal detection. A second detector may be arranged outside of the imaging beam path. A first beam splitter may be arranged in the imaging beam path between the sample and the diaphragm. The beam splitter deflects sample radiation onto the second detector.

Abstract: An aperture adjusting device is disclosed. The aperture adjusting device includes a support frame, a gear ring, at least one blade, and a connector. The support frame includes an aperture, and a guiding slot. The gear ring is rotatably disposed on a first side of the support frame. The blade is swingably disposed on a second side of the support frame, and used to partially cover the aperture. The connector is fixed to the gear ring, and passes through the guiding slot to connect with the blade. The gear ring is adapted to rotate to make the connector move along the guiding slot to drive the blade to swing.

Abstract: A projector includes: a light source, a light amount control device, an electro-optic unit, and a projection device, the light amount control device includes a light-shielding member configured to shield part of the luminous flux emitted from the light source, a holding member configured to hold the light-shielding member, the holding member is formed of a material having a coefficient of thermal conductivity lower than the coefficient of thermal conductivity of the light-shielding member, and a position changing unit configured to move or rotate in order to change the position of the light-shielding member, the light-shielding member is attached to the position changing unit via the holding member, and the light-shielding member comes into contact with the holding member via a projection provided on at least one of the light-shielding member and the holding member.

Abstract: A diaphragm arrangement (100) for generating an oblique illumination in a microscope comprises a carrier element (130), an iris diaphragm element (110) having a variable iris diaphragm opening (111), a further diaphragm element (120) having a diaphragm opening (121) that, when it is in a first position relative to the carrier element (130), covers a portion of the iris diaphragm opening (111) and is mounted rotatably around a first rotation axis (A), such that a rotation of the further diaphragm element (120) around the first rotation axis (A) changes that portion of the iris diaphragm opening (111) which is covered by the further diaphragm element (120), and an actuation element (140) coupled to the further diaphragm element (120) via a coupling device (150) such that a rotation of the further diaphragm element (120) around the first rotation axis (A) is produced by an actuation of the actuation element (140).

Abstract: The optical apparatus includes plural stop blades, an opening/closing mechanism moving the stop blades in opening and closing directions, an actuator driving the opening/closing mechanism, and a controller controlling drive of the actuator. The controller calculates, when moving the stop blades from a first position to a second position in video capturing, a control driving amount of the actuator that is a sum of a target driving amount corresponding to a moving amount of the stop blades from the first position to the second position and a driving correction amount that varies depending on a position and a moving direction of the aperture blades, the position being at least one of the first and second positions. The controller controls the drive of the actuator based on the control driving amount.

Abstract: A projector includes: an illuminator that emits an illumination light flux; a light control mechanism that blocks at least part of the illumination light from the illuminator; a light modulator illuminated with the illumination light from the illuminator; a projection system capable of projecting modulated light formed by the light modulator and switching the f number when the modulated light is projected; and a control unit that controls the open/close state of the light control mechanism in accordance with the f number of the projection system so that illumination light having an angular distribution corresponding to the f number of the projection system is incident on the projection system.

Abstract: A continuous variable non-circular aperture for an infra-red camera is formed by a plurality of positionable metal blades arranged to define there between an aperture of non-circular shape. A rotatable actuator plate positions the blades. Actuator rotation in one direction moves the metal blades to increase the size of the non-circular aperture without changing the non-circular shape of the aperture and vice-versa when the actuator plate is rotated in the opposite direction also maintaining the non-circular aperture shape. A preferred non-circular shape for a continuous variable aperture now possible is a rectangle; another is configured as a racetrack.

Abstract: A light adjusting apparatus according to the present invention includes a first substrate and a second substrate having an optical aperture, a rotating shaft member which has been rotatably installed with respect to the first substrate and the second substrate, a light adjusting unit which is joined to the rotating shaft member, and a driving unit which moves the light adjusting unit by driving to rotate the rotating shaft member. Light which passes through the optical aperture is adjusted by moving the light adjusting unit by rotating the rotating shaft member by the driving unit. The light adjusting unit has a notch, and the rotating shaft member and the light adjusting unit are joined at the notch.

Abstract: A device for in-situ thermal imager calibration having a rotatable lens curtain with an aperture for the lens of a thermal imager to observe a scene. The lens curtain includes a balancing weight and blocking portion having a thermally uniform interior calibration surface that is rotatably disposed such that when the UAS is in level flight, the lens views the scene through the aperture. When the UAS is laterally rotated about its flight path, the lens curtain maintains its absolute position relative to the Earth by virtue of the balance weight and the lens rotates within the lens curtain for viewing a thermally uniform interior surface for calibration.

Abstract: A shutter device with a multi-stage diaphragm includes a base, a shutter unit pivoted on the base, a driving unit, and an actuator unit. The base includes a first optical opening defining an optical axle passing through the first optical opening. The shutter unit is adjusted to cover the first optical opening. The driving unit includes a main axle perpendicular to the optical axle and installed on the base, and a driving bar moving along the main axle and linking to the shutter unit. The actuator unit includes a coil board installed on one of the base and the driving bar, and an actuator magnet installed on the other of the base and the driving bar corresponding to the coil board. The coil board receives signals to change the relative position between the coil with pattern and the actuator magnet, whereby the actuator unit drives the shutter unit in multi-stages.

Abstract: A light amount adjustment apparatus having a plurality of light-shielding blade members that can be so manufactured by simple machining as to reduce undesired reflection on end faces of the light-shielding blade members which are parallel with the optical axis and prevent degradation in image quality such as flare and ghosts. A driving force of a stepping motor is transmitted to the light-shielding blade members so that an aperture diameter can be changed. The light-shielding blade members are formed by injection molding of a light-shielding resin material. By performing blasting on an end face of each light-shielding blade member in a part that forms the aperture diameter, an aperture end face whose surface is roughened while substantially maintaining outside dimensions of the light-shielding blade member is formed, and an oblique portion tilted relative to the aperture end face is formed.

Abstract: A mechanical shutter includes a base including a plate with an aperture and a protruding positioning projection. A core on the surface surrounds the aperture and includes a first end and a second end. The positioning projection is arranged between the first end and the second end, on one corner of the surface. A coil surrounds the core and a blade and a permanent magnet are pivoted on the positioning projection. When receiving current, the coil magnetizes to the core to generate a magnetic force and rotates the permanent magnet, and the blade, to cover and expose the aperture. An electronic device having the mechanical shutter is also provided.

Abstract: A light amount adjusting device includes: a board including an opening; a linear moving blade linearly and movably supported by the board; and a swinging blade swingably supported by the board, wherein: the linear moving blade and the swinging blade are receded from the opening to form a fully opened state; the linear moving blade covers the opening to form a fully closed state; and the swinging blade has a small aperture opening with a diameter smaller than a diameter of the opening, and causes the small aperture opening and the opening to be overlapped with each other to form a small aperture state.

Abstract: One aspect of the invention provides a spatially-selective disk including a plurality of holes arranged such that a matrix having a plurality of rows, each row having elements corresponding to a fraction of a pixel in a viewing window projected onto the disk that is backed by a hole at a distinct rotational position of the disk, has linearly independent rows. Another aspect of the invention provides a spectrometry device including: a disk having one or more holes; a motor configured to rotate the disk; one or more beam-shaping optics arranged to map one or more spectral components of radiation of interest onto a plurality of locations on the disk; and a receiver positioned to capture the one or more spectral components passing through the one or more holes as the disk is rotated.

Abstract: A blade drive device includes: a board including an opening; a first blade movable toward and away from the opening, and including: a first slot; and first and second aperture openings each of which is smaller than the opening; a second blade movable toward and away from the opening and including a second slot; a first drive member including a first drive pin that engages the first slot and that is rotatable about a predetermined position; and a second drive member including a second drive pin that engages the second slot and that is rotatable about a predetermined position.

Abstract: A light control apparatus for controlling incident light passing through an aperture includes a substrate having the aperture, a plurality of incident light control members that are moved respectively in different planes perpendicular to an optical axis direction on the substrate, a plurality of drive members that drive the incident light control members, and separating members that separate, with a certain gap, moving spaces in which the plurality of incident light control members moves in the respective planes. The plurality of incident light control members are each moved by the drive members between an aperture position and a retracted position away from the aperture position.

Abstract: A blade drive device includes: a board including an optical path opening; first and second blades cooperatively defining an amount of light passing through the optical path opening to a given amount of light. The first blade includes a first opening. The second blade includes: a first cutout portion defining the amount of light in cooperation with the first opening; and a second cutout portion defining the amount of light in cooperation with the first opening. The second cutout portion overlaps the first blade when the first cutout portion and the first opening cooperatively define the amount of light.

Abstract: A projection type display apparatus is capable of significantly reducing operational noise of a color wheel. The projection type display apparatus includes a color wheel, a color wheel assembly in which the color wheel is installed, and a noise damping section which changes air flow caused by a rotation of the color wheel so as to reduce the noise.

Abstract: The light amount adjustment apparatus includes a base member formed with cam groove portions, light-blocking blades forming a variable light-passing aperture and being provided with a driving pin and a cam pin engaging with each cam groove portion, a driving ring disposed on an opposite side to a base member side with respect to the light-blocking blades and rotating with respect to the base member to transmit driving force to the driving pins so as to rotate the light-blocking blades. A base member side face of each light-blocking blade is supported by the base member. The driving ring is formed with first blade supporting portions protruding from a ring-shaped portion outward in a radial direction and including a driving hole portion with which the driving pin engages. Each first blade supporting portion supports an opposite side blade face to the base member side blade face of each light-blocking blade.