Abstract: A scissor assembly includes a scissor apparatus having a first scissor jaw and a second scissor jaw that are coupled together. The first scissor jaw has a first jaw face, and the second scissor jaw has a second jaw face that opposes the first jaw face. The scissor apparatus is configured to actuate between a closed position and a plurality of open positions. The scissor assembly includes a pivot pin extending through the first and second scissor jaws. The first and second jaws are configured to rotate around the pivot pin as the scissor apparatus actuates between the closed position and the open positions. The scissor assembly includes a dynamic pin positioned between the first jaw face and the second jaw face. The scissor assembly includes a biasing member positioned at least partially around the scissor apparatus and configured to bias the scissor apparatus toward the closed position.

Abstract: The system for making or breaking the riser includes a robotic system. The robotic system includes one or more robotic arms configured to be disposed on a spider deck, and one or more riser-connection manipulation tools each having a camera and being configured to manipulate a riser connection, the camera being configured to capture an image of an object, wherein each robotic arm is configured to couple to one riser-connection manipulation tool. Further the system for making or breaking the riser includes a control system. The control system includes a robot controller in communication with the one or more robotic arms and configured to control the one or more robotic arms. The system for making or breaking the riser is configured to analyze the image to determine the location and orientation of the object and transmit the location and orientation of the object to the robot controller.

Abstract: An optical system is provided. The optical system includes a movable portion used for connecting to an optical element having an optical axis, a fixed portion, and a second driving assembly used for driving the movable portion to move relative to the fixed portion. The movable portion includes a bottom having a window corresponding to the optical axis, a first blade corresponding to the window, and is movable relative to the bottom, a connecting element movable relative to the bottom and is used for bringing the first blade to move, and a first driving assembly used for driving the connecting element to move relative to the bottom. The movable portion is movable relative to the fixed portion. The fixed portion has a polygonal structure when viewed along the optical axis.

Abstract: A diopter adjustment device for an optical device such as a riflescope includes a first tubular member having overlapping left-handed and right-handed external threads, a second tubular member has internal threads mated with either the left-handed or right-handed external threads of the first tubular member, and a stop nut threaded onto the first tubular member via internal threads that are of opposite handedness as the internal threads of the second tubular member. A diopter lens is mounted in one of the first and second tubular members and movable therewith relative to the other of the first and second tubular members to adjust a diopter setting or focus of the optical device. Because the internal threads of the nut and the second tubular member have opposite handedness, the nut provides greater resistance to inward movement of the diopter lens than conventional locking diopter adjustments.

Abstract: A patterned light irradiation apparatus is enclosed. The patterned light irradiation apparatus comprises a light source, a pattern grating, an aperture, wherein the pattern grating includes a striped shape in a form including repetition of a transmission part and a shielding part, and the aperture includes an opening having a sinusoidal wave-shaped cross section. When the patterned light irradiation apparatus irradiates patterned light to a subject, the patterned irradiation apparatus performs defocusing and thus can irradiate patterned light having an ideal sinusoidal form to the subject. Therefore, a three-dimensional image of high quality can be acquired.

Abstract: [Subject(s)] To offer a ghost reducing device and an imaging device provided with it, a ghost reducing method, and an imaging optical system that can effectively reduce ghosts in a situation where ghosts can easily occur, and suppress deterioration in image quality in a situation where ghosts can hardly occur. [Means to Solve] A ghost reducing device includes multiple diaphragm blades that are formed in the vicinity of the pupil position in an imaging optical system and form at least one opening that lets light pass through, a diaphragm blade drive means that drives the diaphragm blades to adjust the size and/or position of the opening, and a control means that controls the driving of the diaphragm blades by the diaphragm blade drive means, wherein the control means controls the driving so that the diaphragm blades totally block the light in the symmetrical position to the opening with respect to the optical axis of the imaging optical system.

Abstract: According to an aspect of the invention, the diaphragm apparatus includes: a plurality of diaphragm blades which define an aperture diameter; a driving member which includes a protrusion protruding in an optical axis direction, rotates around an optical axis, and drives the diaphragm blades to change the aperture diameter; and a base plate which includes a rail part with which the protrusion contacts to be movable in a direction of a rotation of the driving member. The plurality of diaphragm blades are disposed in a gap between the driving member and the base plate, the gap being defined when the protrusion and the rail part contact with each other. A size of the gap changes in accordance with the rotation of the driving member in the optical axis direction.

Abstract: A camera housing/lens system comprises a camera housing for a camera and a lens. The camera housing/lens system further comprises a lock for locking the lens in position. The lock includes a stop member joined to the lens or the lens mount, and an elastic element arranged between the stop member and the lens mount or between the stop member and the lens, wherein the elastic element is compressed between the stop member and the lens mount or between the stop member and the lens to lock the lens in position. A gap remains between the stop member and the lens mount or between the stop member and the lens. This “elastic compression” allows the position of the lens to be finely adjusted in relation to the lens mount, without having to release the compression in order to do so.

Abstract: A lens module including a base, a lens, a front cover, a first shielding plate set, a second shielding plate set, and a gasket is provided. The lens is disposed on the base. The front cover is rotatably disposed above the base and the lens, and the front cover has a first through hole. Each of the first shielding plate set and the second shielding plate set is pivoted on the base. The second shielding plate set and the first shielding plate set interfere with each other. The gasket is fixed in the first through hole and coupled to the second shielding plate set. The gasket has a second through hole. When the base and the front cover rotate relative to each other, the gasket rotates with the front cover and drives the first shielding plate set and the second shielding plate set to limitedly swing.

Abstract: A device and related method for removing debris from a metal wire formed by a process utilizing a lubricant is provided. The device includes at least two segments forming a passage through which the wire passes, each having a leading edge for stripping debris from the wire, and a resilient member positioned around the at least two segments and applying a force to the segments sufficient to cause contact between the leading edges and the wire passing through the passage. The method broadly includes the steps of moving the metal wire through a passage formed by a plurality of segments, contacting the wire moving through the passage using a leading edge of each of the plurality of segments, and applying a force to the plurality of segments to cause contact between the leading edge of each of the plurality of segments and the wire passing through the passage.

Abstract: A motorized coupler assembly includes a coupler for coupling an insert to a receiving device; a plurality of movable components that cover an opening of the coupler; an electric motor; and an electronic sensing device. When the electronic sensing device detects an insert of a correct type, the movable components rotate to uncover the opening of the coupler and permit the insert to come into contact with the coupler.

Abstract: A lens module including a base, a lens, a front cover, at least a shielding plate and a gasket is provided. The lens is disposed within the base. The front cover is disposed over the base and the lens, and the base and the front cover may rotate relatively. The shielding plate is pivoted on the base and has a first guide portion. The gasket is fixed on the front cover, the shielding plate is located between the gasket and the base. The gasket has a through hole corresponding to the lens and a second guide portion coupled to the first guide portion. When the base and the front cover rotate relatively, the first guide portion is guided by the second guide portion, the shielding plate can limitedly swing to move to the through hole to cover the lens or move away from the through hole to expose the lens.

Abstract: A stop mechanism, including: diaphragms; a reception receiving the diaphragms; a cam rotating the diaphragms to change an aperture diameter; and an interlocking arm interlocking with rotation of the cam and arranged on a radially outer side of the cam to rotate the cam from an outside of the stop mechanism. The diaphragms each include: an arc portion defining the aperture diameter and being received in the reception at maximum aperture; and a light-blocking projection formed on the arc portion to block light outside the aperture diameter. The reception includes cutouts for allowing the light-blocking projection to project outside at the maximum aperture. The interlocking arm is located at a position where the light-blocking projection does not overlap in a circumferential direction, and the light-blocking projection moves into the reception while the interlocking arm moves in the circumferential direction in which the aperture diameter is reduced.

Abstract: A stop apparatus includes a stop operation member, a plurality of stop blades, each of which is provided with a pivot and a driving pin, a blade supporter that supports the stop blades in such a way that the stop blades are rotatable about the pivots of the respective stop blades, a first cam member provided with a first cam groove with which the driving pins of the respective stop blades engage, a second cam member provided with a second cam groove having a shape different from the first cam groove, and a driving force transmission member that transmits rotational driving force of the stop operation member to the second cam member. At least one of the driving pins engages with both the first cam groove and the second cam groove.

Abstract: There is provided a diaphragm unit, including a plurality of diaphragm blades structured to at least rotate, the plurality of diaphragm blades being capable of changing an area of an aperture, each of the diaphragm blades including portions on a part of an inner periphery, a R (radius) of a shape of one portion being at the opposite side of a R (radius) of a shape of the other portion, the inner periphery being a periphery forming an outer periphery of the aperture.

Abstract: A stop apparatus includes a stop operation member, a plurality of stop blades, each of which is provided with a pivot and a driving pin, a blade supporter that supports the stop blades in such a way that the stop blades are rotatable about the pivots of the respective stop blades, a first cam member provided with a first cam groove with which the driving pins of the respective stop blades engage, a second cam member provided with a second cam groove having a shape different from the first cam groove, and a driving force transmission member that transmits rotational driving force of the stop operation member to the second cam member. At least one of the driving pins engages with both the first cam groove and the second cam groove.

Abstract: A MEMS iris diaphragm (400) for an optical system is disclosed. The MEMS iris diaphragm (400) comprises at least two layers of diaphragm structures with each layer having suspended blade members (404a, 404b, 404c, 404d, 406a, 406b, 406c, 406d) angularly spaced from each other, the at least two layers of blade members (404a, 404b, 404c, 404d, 406a, 406b, 406c, 406d) arranged to overlap and cooperate with each other to define an aperture (408) to allow light to pass through, and a rotary actuating device (401) arranged to rotate at least some of the blade members (404a, 404b, 404c, 404d, 406a, 406b, 406c, 406d) of the at least two layers about their respective axis in a non-contact manner to vary the aperture's size. A method of adjusting a size of an aperture of a MEMS iris diaphragm (400) for an optical system is also disclosed.

Abstract: There is provided a diaphragm unit, including a plurality of diaphragm blades structured to at least rotate, the plurality of diaphragm blades being capable of changing an area of an aperture, each of the diaphragm blades including portions on a part of an inner periphery, a R (radius) of a shape of one portion being at the opposite side of a R (radius) of a shape of the other portion, the inner periphery being a periphery forming an outer periphery of the aperture.

Abstract: The present invention relates to a framing system for shaping a light beam. The framing system comprises a frame support comprising a number of shutter blades surrounding said light beam and a number of actuators adapted to move said shutter blades in and out of said light beam. The shutter blades form a merged pile, where part of a first shutter blade is in placed over a part of a second shutter blade and where another part is placed below a part of a third shutter blade. A first actuator rotates at least one of said shutter blades in relation to a first rotational point and a second actuator moves the first rotational point in relation to said light beam. The present invention relates further to a method of shaping a light beam comprising the steps of rotating a shutter blade around a first rotation point using a first actuator and moving the first rotation point in relation to the light beam using a second actuator.

Abstract: A lens barrel includes a lens tube configured to hold a lens, a barrier driving member configured to move between an opened state and a closed state by switching of the lens tube between a shooting-ready state and a retracted state, a pair of first barrier blades, each of which includes a blade portion, configured to open and close in conjunction with the barrier driving member, and a pair of second barrier blades, each of which includes a blade portion and a coupling portion, the coupling portion positioned outside the lens as viewed from an object side and located closer to the first barrier blade than the blade portion, the pair of second barrier blades being configured to be moved by contact between the coupling portion and the first barrier blade.

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: Provided is a light amount adjusting apparatus wherein a base member has a plurality of supporting parts for supporting the plurality of light amount adjusting blades and a second contact part is located outside a circle extending through the plurality of supporting parts, wherein a contact part between the second contact part and a first contact part is constituted at the other surface of the base member with respect to a surface having a jointing part between a blade driving member and the base member, and wherein, when the blade driving member is pivoted in the circumferential direction of an opening, a part of the blade driving member overlaps at least one of the supporting parts for supporting the light amount adjusting blades at a position offset in a direction parallel to the center axis of the opening.

Abstract: Provided is a restricting blade 21 which includes a blade substrate 21w and a blade end face 21u defining an aperture diameter as being an end face of the blade substrate 21w, while the blade end face 21u includes a first slant portion 21p which is curved and slanted against an optical axis O, a first leading end portion 21q which forms a leading end of the first slant portion 21p, a second slant portion 21r which is curved and slanted in the approximately same direction as the first slant portion 21p as being overlapped with the first slant portion 21p along the optical axis O, and a second leading end portion 21s which forms a leading end of the second slant portion 21r and the first leading end portion 21q is further protruded toward the optical axis O than the second leading end portion 21s.

Abstract: A light path adjustment apparatus includes: a support plate with a first through hole through which light passes; a plurality of optical units, including first and second optical units, that move between an open location where the first through hole is opened by the optical units moving toward an outside of the first through hole and a closing location where the first through hole is divided into a plurality of regions by the plurality of optical units moving toward the first through hole and blocking at least a part of the light; and a rotation plate that has a second through hole corresponding to the first through hole and is rotatably disposed with respect to the support plate. The first and second optical units correspond to first and second regions of the first through hole, respectively, and are coupled to the support plate and the rotation plate, respectively.

Abstract: A shutter device for a camera is provided, which effectively provides an operating space of a shutter blade and a light-amount adjuster, improves assemblability of a top cover, and improves mechanical stability according to the assembly of the top cover by modifying the geometry of the top cover. The shutter device includes a driving unit driving a shutter blade and a light-amount adjuster, the shutter device including: a base where the driving unit is installed; a first plate placed on the top of the base; a second plate disposed on the top of the first plate; a top cover including first supports bent downward and supports projecting downward, where the first supports extend to pass through the second plate and support the top surface of the first plate, and the second supports are supported on the top surface of the second plate.

Abstract: An optical apparatus includes a first optical member (10) on which a concave curved surface is formed, a second optical member (20) on which a convex curved surface is formed, and a light amount adjuster (23) that includes a plurality of blade members (233) each having a convex curved shape portion and that changes size of an aperture to pass a light beam by a rotation of the blade members (233), the first and second optical members are disposed side by side in an optical axis direction so that the concave curved surfaces of the first and second optical members face each other, the light amount adjuster is disposed between the first and second optical members, and a radius of curvature of the convex curved shape portion of the blade member is smaller than that of the first optical member and is larger than that of the second optical member.

Abstract: A lens barrier device includes a first barrier blade including a shielding portion, a connection portion, and an abutment portion. The abutment portion is connected, on an optical axis imaging surface side of the shielding portion, to the shielding portion via the connecting portion. Further, a second barrier blade is provided on an optical axis imaging surface side with respect to the shielding portion. A regulating portion is provided whose optical axis imaging surface side is configured to contact the abutment portion, wherein an outer peripheral portion of the second barrier blade, the connecting portion, and the abutment portion are located in this order from an optical axis center to an optical axis outer side.

Abstract: A lens barrel that is capable of reducing a size and cost by omitting an actuator only for diaphragm blades, and of preventing a change of a diaphragm aperture due to a variation in a part accuracy of a mechanism that drives diaphragm blades. Diaphragm blades have cam engagement parts, respectively. A holding member holds the diaphragm blades so as to be rotatable in directions to open and close an aperture. An energizing member energizes the diaphragm blades in a direction to open or close the aperture. A moving member has cam surfaces that engage with the cam engagement parts, and moves in an optical axis direction to operate the diaphragm blades by cam actions between the cam engagement parts and the cam surfaces against energizing force of the energizing member. Regulation parts regulate the operations of the diaphragm blades by the energizing force of the energizing member.

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: Provided is a restricting blade 21 which includes a blade substrate 21w and a blade end face 21u defining an aperture diameter as being an end face of the blade substrate 21w, while the blade end face 21u includes a first slant portion 21p which is curved and slanted against an optical axis O, a first leading end portion 21q which forms a leading end of the first slant portion 21p, a second slant portion 21r which is curved and slanted in the approximately same direction as the first slant portion 21p as being overlapped with the first slant portion 21p along the optical axis O, and a second leading end portion 21s which forms a leading end of the second slant portion 21r and the first leading end portion 21q is further protruded toward the optical axis O than the second leading end portion 21s.

Abstract: A lens barrel assembly has a first groove formed in a stationary barrel. A second groove is formed in a rotatable barrel. A diaphragm control plate portion is disposed between an inner surface of the rotatable barrel and an iris diaphragm device in a rotatable manner in a circumferential direction, has an end portion connected to a driving ring. An engaging groove is formed in the diaphragm control plate portion to extend along the optical axis. An operable aperture ring is disposed outside the stationary barrel. A pin device has first and second end portions, the first end portion being secured fixedly to the aperture ring, the second end portion being inserted through the first and second grooves and the engaging groove, for operating upon rotation of the aperture ring to cause the engaging groove to rotate the diaphragm control plate portion to actuate the driving ring.

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 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 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 compact camera lens composed of the following five lenses in this sequence proceeding from the object side: a first positive meniscus lens, wherein the concave surface of the first positive meniscus lens faces away from the object side; a second negative lens, wherein the object-side surface of the second negative lens is concave; a third positive lens, wherein the image-side surface of the third positive lens is convex; a fourth biconvex lens; and a fifth negative lens. The fourth biconvex lens and the fifth negative lens are in each case cemented with one another. The object-side surface of the third positive lens and the image-side surface of the fifth negative lens are of aspherical form. The objective is particularly robust, compact, has a large aperture and very good imaging characteristics. It is suitable for example as an objective of an exterior mirror replacement camera in the automotive field.

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 light quantity adjustment apparatus includes a support plate with a first through hole, a rotation plate with a second through hole corresponding to the first through hole and rotatable with respect to the support plate, 2D iris plates rotatably connected to the support plate so as to move between a location in which the first through hole is completely opened and another location in which the first through hole is completely closed, two 3D iris plates each having one end rotatably connected to the support plate and another end engaged with the rotation plate, a shading plate, and a shading plate driving unit. The 2D iris plates adjust an open area of the first through hole. The two 3D iris plates move between a retreat location away from the first through hole and a photographing location where a first photographing hole and a second photographing hole are formed.

Abstract: A light-amount adjusting apparatus includes a plurality of light-amount adjusting blades that causes a size of a light-passing aperture to change by rotation thereof. Each of the light-amount adjusting blades includes a base portion on which a rotation center portion and a driven portion are formed, and a blade portion that overlaps another light-amount adjusting blade in a light-passing direction so as to form the light-passing aperture. A thickness of the blade portion is thinner than that of the base portion. When the plurality of light-amount adjusting blades is rotated to set the light-passing aperture to be smaller than a full-opened aperture, a thickness of a portion that overlaps an adjacent stop blade is thinner than that of a portion that does not overlap the adjacent stop blade in each of the light-amount adjusting blades. The blades have high dimension accuracy, and deterioration of the optical performance of the apparatus is reduced.

Abstract: An optical path adjusting device includes a supporting plate having a hole through which light travels, a two-dimensional (2D) aperture disposed in the supporting plate so as to adjust an open area of the hole, and a three-dimensional (3D) aperture having a plurality of first blinds and a plurality of second blinds. The plurality of first blinds are disposed to correspond to a first area of the hole so as to move to open or close the first area, and the plurality of second blinds are disposed to correspond to a second area of the hole so as to move to open or close the second area.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

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 quantity adjustment apparatus includes a support plate with a first through hole, a rotation plate with a second through hole corresponding to the first through hole and rotatable with respect to the support plate, 2D iris plates rotatably connected to the support plate so as to move between a location in which the first through hole is completely opened and another location in which the first through hole is completely closed, two 3D iris plates each having one end rotatably connected to the support plate and another end engaged with the rotation plate, a shading plate, and a shading plate driving unit. The 2D iris plates adjust an open area of the first through hole. The two 3D iris plates move between a retreat location away from the first through hole and a photographing location where a first photographing hole and a second photographing hole are formed.

Abstract: A gear mechanism includes a pair of gears including first and second gears overlapped with each other in an axial direction. The first and second gears include first and second tooth portions, respectively. The first tooth portion slightly projects outwardly from the second tooth portion. The first gear is formed with a deformation facilitating portion for facilitating deformation of the first gear in a radial direction.

Abstract: A diaphragm unit includes: a plate-like base member having an optical path hole formed therein; diaphragm blades overlapping with each other in an optical axis direction of an optical system, being supported by the base member so as to be movable in directions in which the diaphragm blades approach and depart from the optical axis along a plan perpendicular to the optical axis, and forming a diaphragm opening centered on the optical axis inside the optical path hole; and a driving mechanism adjusting the size of the diaphragm opening by moving the diaphragm blades.

Abstract: A light amount adjusting device includes: a cover plate having a light-passing hole; a first separator being sheet-shaped and having a hole; a second separator being elastically deformable and sheet-shaped, positioned on a side opposite to the cover plate with the first separator therebetween, and having a hole; a first light amount adjusting blade movable between the cover plate and the first separator; a second light amount adjusting blade being movable between the first separator and the second separator; a base body to which the cover plate, the first separator, and the second separator are mounted, having a throughhole and mounting grooves, the throughhole being formed to have a diameter larger than a diameter of the hole of the second separator, the mounting grooves allowing the second separator to be mounted therein and being opened toward the throughhole.

Abstract: A camera diaphragm device in which two diaphragm blades, that is, first and second diaphragm blades having respective first and second diaphragm aperture portions whose diameters differ from each other is provided. The diaphragm blades are mounted to blade mounting shafts provided close to each other and in a standing manner, and are separately reciprocatingly rotated by driving pins of respective rotors. When the diaphragm device is set in a minimum diaphragm aperture control state, not only is the first diaphragm blade having the first aperture portion for restricting the minimum diaphragm aperture moved to an aperture portion, but also the second diaphragm blade having the second aperture portion for restricting an intermediate diaphragm aperture is moved to the aperture portion from the same direction. An area of the aperture portion that cannot be covered by only the first diaphragm blade is covered by the second diaphragm blade.

Abstract: A diaphragm unit includes: a pair of straight-moving diaphragm blades and a pair of swing diaphragm blades overlapping with each other in an optical axis direction of an optical system and forming a diaphragm opening centered on the optical axis by moving in directions in which the diaphragm blades get close to and apart from the optical axis along a plane perpendicular to the optical axis; a receiving member receiving the pair of straight-moving diaphragm blades and the pair of swing diaphragm blades; and a diaphragm driving mechanism adjusting the size of the diaphragm opening by moving the diaphragm blades. The receiving member has a pair of side surfaces facing each other in the optical axis direction. One and the other of the straight-moving diaphragm blades and one and the other of the swing diaphragm blades are disposed on one and the other of the side surfaces, respectively.

Abstract: A vane driving device includes: a board having an opening; a blade changing an area of the opening, having a cam slot, and being elastically deformable; and a drive member transmitting a drive force from a drive source to the blade, and having a drive pin engaging the cam slot. The drive member is stopped by contacting the drive pin with at least one of end portions of the cam slot, when the blade is located in a fully opened state or in a small aperture state.

Abstract: A light-amount adjusting apparatus includes a plurality of light-amount adjusting blades that causes a size of a light-passing aperture to change by rotation thereof. Each of the light-amount adjusting blades includes a base portion on which a rotation center portion and a driven portion are formed, and a blade portion that overlaps another light-amount adjusting blade in a light-passing direction so as to form the light-passing aperture. A thickness of the blade portion is thinner than that of the base portion. When the plurality of light-amount adjusting blades is rotated to set the light-passing aperture to be smaller than a full-opened aperture, a thickness of a portion that overlaps an adjacent stop blade is thinner than that of a portion that does not overlap the adjacent stop blade in each of the light-amount adjusting blades. The blades have high dimension accuracy, and deterioration of the optical performance of the apparatus is reduced.

Abstract: A blade drive device includes: a board having an opening; a blade for adjusting an amount of the opening; and first and second drive rings having a support structure for commonly supporting the blade for swinging, rotating in an identical direction with a given speed difference, and being arranged in a same plane.