Abstract: An alignment apparatus for aligning components of an optical assembly include a chuck configured to support the optical assembly thereon, and an adjustable flexure assembly disposed around the chuck. The adjustable flexure assembly includes a plurality of flexures. The plurality of flexures are positioned relative to the chuck such that each of the plurality of flexures contact the optical assembly when the optical assembly is positioned on the chuck. Adjustment of a position of one or more flexures of the plurality of flexures adjusts an alignment of an optical axis of an optical component of the optical assembly when the optical assembly is positioned on the chuck, wherein the alignment apparatus is configured to align optical axes of the optical component to an angle of deviation of less than about 1,000 ?rad and provide an extinction ratio within the optical assembly of greater than or equal to 1000:1.

Abstract: A split lens assembly module, comprising: a focusing mechanism; and a lens assembly, wherein the lens assembly comprises at least two optical lenses, at least one lens barrel member and a bearing structure, each of the at least one lens barrel member holds at least one optical lens to form at least one to-be-adjusted lens assembly, the bearing structure holds at least one optical lens to form a fixing lens assembly, the to-be-adjusted lens assembly is pre-assembled on the fixing lens assembly, the to-be-adjusted lens assembly is suitable for being adjusted relative to an assembly position of the fixing lens assembly, the fixing lens assembly is mounted inside the focusing mechanism through the bearing structure, and moves as the focusing mechanism is powered on, which is suitable for focusing.

Abstract: Apparatus and associated methods relate to a side-mounted field-installable indication module (SMFIIM) configured to reflect a status of a manufacturing area (e.g., a status of a machine, status of a light curtain). In an illustrative example, the SMFIIM may include a light emitting module configured to emit a visual indicium corresponding to the status of the manufacturing area, and a coupling member configured to be releasably captured within a longitudinally extending channel of a housing of a light curtain. After installation, for example, the SMFIIM may be disposed on a side of and substantially parallel to the housing. The light emitting module may emit the visual indicium in an emitting plane oriented at an angle less than 90° to a plane tangential to a mounting surface of the light curtain housing. Various embodiments may advantageously provide a wide viewing angle of the light emitting module around the lighting curtain.

Abstract: A light-emitting device includes: a light-emitting unit having a light-emitting surface; a light guide member configured to guide incident light from the light-emitting unit, the light guide member including: a total reflection portion configured to reflect the incident light from the light-emitting unit, and a Fresnel lens portion where light reflected by the total reflection portion is incident; and a movement mechanism configured to move the light guide member relative to the light-emitting unit in a direction that intersects a center axis of the light-emitting surface.

Abstract: Disclosed is a welding structure (20) for an optical module (300) and an application thereof, wherein the optical module (300) comprises at least a first module assembly and at least a second module assembly, the welding structure (20) comprises at least a first welding part (21) and at least a second welding part (22), wherein the welding part (21) is provided on the first module assembly and the second welding part (22) is provided on the second module assembly, and after the first welding part (21) is welded to the second welding part (22), the first module assembly and the second module assembly are fixed relative to each other.

Abstract: An apparatus for checking mechanical parts such as tools on machine tools employs optical devices for emitting and receiving a light beam, for example a laser beam, along a checking direction, and sensors for detecting variations in the features of such a light beam. A protection device (15) for at least one of the optical devices comprises a support element (21,22) with an inner seat (20), communication conduits (18,26,34) aligned along the checking direction and a shutter (44) movable, in the internal seat, from a rest position to an operative position of the apparatus. The shutter comprises a transversal through hole (60) which is arranged along the checking direction in the operative position, aligned with the communication conduits to allow the light beam to pass through. A movable closure element (55), for example a small sphere or ball, is arranged in a transversal hollow (54) of the shutter and is pushed by a spring towards the outside of the transversal hollow.

Abstract: An imaging device includes a stage, an imaging element, a plurality of lenses, a plurality of diaphragms, an adjuster, and a controller. Light passing through each of the plurality of lenses passes through any one of the plurality of diaphragms. The controller is configured to control at least one of a diameter of the opening in each of the plurality of diaphragms and a position of each of the plurality of diaphragms in the optical axis direction of the imaging element so that a size of a valid area of a plurality of images projected on the imaging element by the plurality of lenses is equal to or greater than a first reference value. The valid area is an area on which each of the plurality of images is projected, excluding an area in which two adjacent images overlap.

Abstract: The invention relates to an adjustment turret for a long-range optical device comprising a base, a rotary control element which can be rotated relative to the base about an axis of rotation, a stop pair consisting of a first stop and a second stop which in the stop position limit the rotational movement of the rotary control element, and a mechanism for overcoming the stop position of the stop pair wherein the mechanism comprises an actuating element accessible from the outside which bears or cooperates with one of the stops, and in at least one rotational position of the rotary control element can be moved relative to the base and relative to the rotary control element, so that by activating the actuating element one stop can be displaced relative to the other stop and the stop position can be overcome.

Abstract: A projection lens, a projection device and an optically-induced microparticle device are provided. The projection lens includes an aperture, a first and a second lens groups. The aperture, the first and the second lens groups are disposed on a projection path of an image. The aperture is between the first and the second lens groups. The first and the second lens groups are suitable for interchanging with each other to switch the magnification ratio. When in a first state, the first lens group is between the object and the aperture and the second lens group is between the aperture and a projection surface, herein the projection lens has a first magnification ratio. When in a second state, the first lens group is between the aperture and the projection surface, and the second lens group is between the object and the aperture, herein the projection lens has a second magnification ratio.

Abstract: A digital camera for wild game animals includes a camera having automatic flash, focus, aperture and shutter speed and film advance functions. The camera is mounted within a camera housing adapted for outdoor installation and protection from adverse weather conditions. An electronic control circuit mounted within the camera housing is operably connected to the camera and includes a memory device and a microprocessor for storing and performing a set of programmable functions. The camera is activated by a passive infrared sensor detecting body heat of the animal or group of animals. An electromechanical device mounted within the camera housing selectively inserts an optical lens filter, such as day optical filter and a night optical filter, into an optical path of the camera in accordance with light intensity and/or a signal from a user or timer.

Abstract: Some embodiments disclosed herein relate to a lens component having one or more lenses attached to a retainer portion configured to removably attach to communication devices such as mobile phones, tablet computers, media players, and the like. The retainer portion may be configured so as not to interfere with a user's view of a display panel of the communication device. In some embodiments, a plurality of lenses may be provided, and the lenses may be removably attached to the retainer portion and may be interchangeable. A structure for providing a flash may also be provided. In some embodiments, additional features may be provided, such as attachment components to facilitate attachment to stability devices, such as tripods, and to user-wearable accessories.

Abstract: An optical switching system and method of selecting between one of several available in optic modules in an optical system is disclosed. In one example, the optical switching system comprises a focus cell assembly disposed in a plane, a rotatable field of view optic system having an axis, configured to rotate around the axis, the axis disposed in parallel to the plane of the focus cell, and a cam device mounted to the field of view optic system and configured to push the focus cell assembly away from the field of view optic system with each rotation of the field of view optic system.

Abstract: A camera lens assembly is provided, including a holder, a lens module, and a metal frame. The lens module is fixed in the holder by an adhesive and includes a lens, a substrate connected to the lens, and a plurality solder balls disposed on the substrate. The metal frame is disposed around the lens module and fixed to the holder, wherein the metal frame forms an opening with the solder balls exposed thereto, and the lens module and the metal frame form a gap there between.

Abstract: A lens assembly for a smartphone and a method of use is disclosed. In a first aspect, a lens assembly comprises a rotatable wheel; wherein the wheel includes at least two lenses. The lens assembly includes a skin portion coupled to the rotatable wheel, wherein the skin portion is adjustable to cover a smartphone. The at least two lenses of the wheel are positioned such that when one of the lens of the assembly is properly positioned it covers the lens of a camera on the smartphone. In a second aspect the method comprises providing a lens assembly over a camera lens of a smartphone chassis. The lens assembly includes a plurality of lenses that are rotatable. The method includes ensuring that the center of the smartphone lens is congruent with the center of the selected lens of the plurality of lens by referencing at least two surfaces of the smartphone chassis.

Abstract: A microscope stage (14) comprising a platform (16) and a holder (42) for a microscope objective (38), which holder is mounted on the platform (16) pivotally about a bearing axis (46) and movably along the bearing axis (46) and holds the objective (38), an operating element (50) which is coupled to the holder (42) and with which the holder (42) is pivotable about the bearing axis (46) and is movable along the bearing axis (46) for its positioning in an operating position, and a locking mechanism (60) which is actuatable by the operating element (50) and with which the holder (42) positioned in the operating position can be fixed to the platform (16).

Abstract: A microscope objective changer includes a changing device for changing at least two objectives. A movable objective holder corresponds to each objective. Each movable objective holder is configured to receive a respective one of the objectives and to transfer the respective objective along a respective displacement path from an allocated stand-by position into an operating position. A carrier is associated with each objective holder and includes a guide groove constituting the respective displacement path. Each displacement path includes a first portion beginning at the respective stand-by position and extends substantially perpendicular to the optical axis and a second portion directly bordering the first portion that includes a downwardly component in a direction parallel to the optical axis such that each objective holder is movable from the respective stand-by position to the optical axis of the operating position when reaching a lower end of the second portion of the displacement path.

Abstract: According to one embodiment, a focus position changing apparatus is provided on an optical path of a confocal optical apparatus having a light source and an objective lens and is configured to change a focus position of the objective lens in an optical axis direction of the objective lens. The focus position changing apparatus includes at least a plurality of optical path changing pieces and a rotating plate. Each of the plurality of optical path changing pieces is differ from each other in at least one of a refractive index and a thickness. On the rotating plate, the plurality of optical path changing pieces is arranged along a rotation direction of the rotating plate so as to cross an optical axis of the objective lens. And an anti-reflection layer is formed in a predetermined region on a surface of the rotating plate on a side of the light source.

Abstract: A camera lens assembly is provided, including a holder, a lens module, and a metal frame. The lens module is fixed in the holder by an adhesive and includes a lens, a substrate connected to the lens, and a plurality solder balls disposed on the substrate. The metal frame is disposed around the lens module and fixed to the holder, wherein the metal frame forms an opening with the solder balls exposed thereto, and the lens module and the metal frame form a gap there between.

Abstract: An optical switching system and method of selecting between one of several available in optic modules in an optical system is disclosed. In one example, the optical switching system comprises a focus cell assembly disposed in a plane, a rotatable field of view optic system having an axis, configured to rotate around the axis, the axis disposed in parallel to the plane of the focus cell, and a cam device mounted to the field of view optic system and configured to push the focus cell assembly away from the field of view optic system with each rotation of the field of view optic system.

Abstract: A microscope apparatus capable of removing liquid from an observation field of view of a dry objective lens, when an immersion objective lens is switched to the dry objective lens, is provided. The microscope apparatus includes a specimen XY stage on which a specimen is placed, a dry objective lens and an immersion objective lens that collect light from the specimen, a movable revolver that selectively disposes one of these objective lenses at a position facing the specimen, and a control unit that controls the specimen XY stage and movable revolver such that the relative positions in the XY direction are changed until the immersion objective lens is disposed at a non-observation region of the dry objective lens, prior to switching of these objective lenses.

Abstract: An apparatus for positioning optical components in an optical device and a microscope with such an apparatus are described, comprising a holding device having a plurality of receptacles on which the optical components can be fixed. A stepper motor comprises a motor shaft for rotating the holding device via a toothed belt and therefore positions the optical components. This allows to position optical components in the optical beam path with low noise and in a vibration-free manner.

Abstract: A fixed-focus lens module includes an outer lens barrel, an inner lens, a first lens, and a second lens group. The outer lens barrel includes a first open end, a first cavity, and a second open end arranged in the order from the object side to the image side of the outer lens barrel. The inner lens barrel is received in the outer lens barrel adjacent to the first open end. The first lens is received in the inner lens barrel. The second lens group is received in the outer lens barrel adjacent to the second open end. An gap is defined between an outer wall of the inner lens barrel and an inner wall of the outer lens barrel at the first open end, and the center axis of the inner lens barrel is adjustable relative to the outer lens barrel for adjusting the alignment between the first lens and the second lens group.

Abstract: An objective lens to be fitted into a fitting hole of a nosepiece of a microscope includes an imaging lens that is composed of a plurality of lens groups, and a lens barrel that holds the imaging lens. The lens barrel is formed with a fitting portion that is fitted to the fitting hole of the nosepiece and provided at an outer circumference of a tip portion side away by a given distance from the tip portion where a first lens group in the imaging lens is held, and a mount surface that comes into contact with a contact surface of the fitting hole of the nosepiece upon fitting at the fitting portion. The nosepiece is equipped with the objective lens. The inverted microscope is equipped with the nosepiece fitting the objective lens.

Abstract: A turret knob comprises an adjustable member, an engagement member and a plurality of stop members. The adjustable member is capable of being adjustably positionable about an axis of rotation. The engagement member is coupled to the adjustment member, and a relative position of the engagement member with respect to the axis of rotation corresponds to a position of the adjustable member as the adjustable member is adjustably positioned about the axis of rotation. The plurality of stop members are each selectably positioned about the axis of rotation. Each stop member is capable of interfering with the engagement member and blocking movement of the adjustable member as the adjustable member is adjustably positioned about the axis of rotation. The adjustable member is adjustably positionable about the axis of rotation between adjacent stop member positions.

Abstract: When the lens barrel is in the storage state, a part of a lens group and a group cylinder are inserted into an aperture of a diaphragm unit and a shutter blade of a shutter unit is closed for light shielding. With this arrangement, the cylinder length in the storage state is shortened, and the performance degradation of an image sensor and optical components provided on a front side of an image sensor can be prevented as well.

Abstract: A lens unit is equipped with a lens, through which light from an object enters, and a lens barrel for holding the lens. An optical extending member is employed when observing a focal image of the lens with a microscope. A receiving portion having a receiving surface, for receiving a front end facet of the optical path extending member within the lens barrel that faces toward the lens, is formed at a portion of the lens barrel. A mounting portion positioned further rearward from a rear end facet of the optical path extending member, having a guide insertion aperture that extends in a direction perpendicular to the receiving surface and a mounting surface that extends in a direction parallel to the receiving surface is formed at the periphery of the guide insertion aperture is formed at a portion of the lens barrel.

Abstract: An optical-pickup apparatus includes first and second objective lenses that focus first and second laser light on information-recording layers of first and second optical discs, the second optical disc having an information-recording format different from that of the first optical disc; and a lens holder that integrally holds the first and second objective lenses in an adjacent manner, a disc surface of the first optical disc and of the second optical disc being substantially parallel to confronting faces of the first and second objective lenses, that confront the disc surface, a minimum distance between the disc surface and the confronting faces in a direction of an optical axis of the turntable being greater than a thickness of the turntable in a direction of a rotation axis of the turntable, either one or both of the first and second objective lenses configured to focus bluish-violet laser light on an optical disc.

Abstract: An optical apparatus includes an interchange mechanism and an optical assembly of an illumination system or a projection objective. At least one of the plurality of optical elements of the optical assembly is selected from among a plurality of ones selectable from the interchange mechanism which facilitates exchange of one for another in the beam path. To reduce transmission of vibration from the interchange mechanism to the optical assembly, the interchange mechanism is mounted on a structure which is substantially dynamically decoupled from the housing, and a selected selectable optical element is located at an operating position at which it is separate from the interchange mechanism.

Abstract: The invention provides a system and method for maintaining removable, rotatable gobo holders in place on a fixed baseplate within an effects lighting fixture. In the first preferred embodiment, a gobo platform includes a rotatable baseplate having at least one aperture and at least one removable, rotatable gobo holder including points of active retention configured to retain the removable, rotatable gobo holder on the rotatable baseplate.

Abstract: A housing assembly is provided including a housing, a lens panel received in the housing, and a shell. The shell includes latching end portions and secured with the housing by a latching of the latching end portions with the housing. The lens panel is secured between the housing and the shell and partially exposed through the shell.

Abstract: A turret knob comprises an adjustable member, an engagement member and a plurality of stop members. The adjustable member is capable of being adjustably positionable about an axis of rotation. The engagement member is coupled to the adjustment member, and a relative position of the engagement member with respect to the axis of rotation corresponds to a position of the adjustable member as the adjustable member is adjustably positioned about the axis of rotation. The plurality of stop members are each selectably positioned about the axis of rotation. Each stop member is capable of interfering with the engagement member and blocking movement of the adjustable member as the adjustable member is adjustably positioned about the axis of rotation. The adjustable member is adjustably positionable about the axis of rotation between adjacent stop member positions.

Abstract: A lens assembly is provided and includes: a plurality of lenses; a lens frame having a hollow part which includes an opening on each of an object side and an image forming side of the lens assembly and into which the plurality of lenses are inserted with their optical axes aligned; and a first coating film provided on an image forming side surface of a first lens that is located nearest to the object side among the plurality of lenses inserted into the hollow part, the first coating film being more hydrophilic than that of a base body of the first lens.

Abstract: An optical pickup apparatus including a first objective lens that focuses first laser light on an information recording layer of a first optical disc in a first mounting state where the first optical disc is mounted on a turntable; a second objective lens that focuses second laser light on an information recording layer of a second optical disc in a second mounting state where the second optical disc is mounted on the turntable, the second optical disc having an information recording format different from that of the first optical disc; and a lens holder that integrally holds the first objective lens and the second objective lens in an adjacent manner on the outside and inside, respectively, along a radial direction of the first optical disc in the first mounting state and of the second optical disc in the second mounting state.

Abstract: A lens barrel includes a rotational ring, first and second movable members linearly movable having first and second followers, respectively; and first and second guide grooves formed on the rotational ring, the first and second followers being slidably engaged therein, respectively. The first movable member has a non-linear moving path. The first guide groove includes an inclined linear lead groove. The lens barrel includes a complementary cam mechanism for controlling the rotational ring to define a non-linear moving path of the first movable member via a cam track of the complementary cam mechanism and a track of the linear lead groove. The second guide groove includes first and second lead groove portions extending parallel to the linear lead groove at different positions in the optical axis direction, and a differential groove portion extending in the circumferential direction which connect the first and second lead groove portions.

Abstract: When an external force that is equal to or greater than the urging force of a first ball spring is applied to a first lens holder, a first ball follower is dislocated from a first cam groove, and a first external force receiving groove and a first external force receiving pin are brought into engagement to receive the external force. When the external force that has been applied to the first lens holder is released, the first ball follower is restored to the first cam groove due to the urging force of the first ball spring.

Abstract: A lens barrel includes a plurality of lens groups (1, 2), lens frames (1a, 2a) to hold the plurality of lens groups, respectively, a lens driving apparatus to drive the plurality of lens frames and a fixed member (5) to hold the lens driving apparatus. The lens driving group includes a rotational member (6) which is forwardly moved while rotating relative to the fixed member (5), a linearly moving guide member (7) which moves with the rotational member (6) in the optical axial direction while limiting rotation of the lens frames and is not capable of rotating, and a linearly moving-guide biasing member (8) which is capable of moving in the optical axial direction relative to the linearly moving guide member and is configured to limit rotation. The linearly moving-guide biasing member has a resilient structure configured to bias the linearly moving guide member in the optical axial direction.

Abstract: A lens barrel has a first group frame, cam followers each having a shaft portion having a straight hollow hole and a slidably contacting portion integral with the shaft portion, which are fixed to the first group frame and a rotating frame having a cam groove with which the cam followers are in slidable contact, which moves relatively to the first group frame. The hollow hole of the cam follower reaches the inside portion of the slidably contacting portion. The shaft portion is press-fit fixed in the shaft hole of the first group frame when an impact force is applied to the lens barrel, the possibility of damaging the frame member is little.

Abstract: A field changer device (4) comprising: a rotary magazine (5) of spherical general shape mounted so as to rotate about a rotation axis (R) coincident with an axis of symmetry of the magazine (5), which is inclined to a fixed principal optical axis (X); and at least three optical channels (A, B, C) provided in said magazine (5) and having concurrent respective optical axes (XA, XB, XC) inclined at the same angle (?) to the rotation axis (R), it being possible for said magazine (5) to rotate about its rotation axis (R) through predetermined rotation angles (?1, ?2, ?3) in order to place each of the optical channels (A, B, C) alternately along the principal optical axis (X), the optical channels (A, B, C) being arranged in the magazine (5) in such a way that at least two of the rotation angles (?1, ?2, ?3) of the magazine (5) are different.

Abstract: Various lens barrels and lenses are provided which may be used in miniature cameras. In one example, a lens barrel assembly includes a substantially cylindrical lens barrel with a first end including a first aperture and a second end including a second aperture. The first end further includes a first substantially annular portion having a first diameter and a first external surface. The first end also includes a second substantially annular portion having a second diameter and a second external surface. The second diameter is smaller than the first diameter and greater than a diameter of the first aperture. The first external surface of the first substantially annular portion is recessed in relation to the second external surface of the second substantially annular portion. The lens barrel assembly may also include a lens having a portion that protrudes from the second aperture of the second end of the housing.

Abstract: A device for transferring a lens, including a lens installation member in which at least one lens is installed, a guide member guiding the lens installation member, a driver that transfers the lens installation member and comprises a lead screw, a clip member that comprises a thread part contacting the lead screw and an installation portion installed in the lens installation member, an installation pin that rotatably installs the clip member in the lens installation member, and an elastic member installed onto the installation pin. A first portion of the elastic member contacts the clip member and a second portion of the elastic member contacts the lens installation member. A portion of the lens installation member contacting the second portion of the elastic member has an inclined surface shape with respect to a longitudinal direction of the installation pin.

Abstract: A lens barrel includes: a plurality of lenses disposed in an outer enclosure; an imaging device that converts image light introduced through the plurality of lenses into an image signal; a first movable unit including a first movable lens and a first lens holder that holds the first movable lens; a second movable unit including a second movable lens and a second lens holder that holds the second movable lens; a first lead screw rotated by a first drive motor; a second lead screw rotated by a second drive motor; a first nut member made of a metal material threadably engaging the first lead screw and connected to the first lens holder; and a second nut member made of a metal material threadably engaging the second lead screw and connected to the second lens holder.

Abstract: A lens barrel includes a communicating passage that communicates between a space inside the lens barrel and outside of the lens barrel. The communicating passage includes a through hole, a circumferential groove, and a vertical groove. Light from outside the lens barrel is prevented from entering an effective optical range of a lens through the communicating passage. A partition is arranged between the effective optical range and a non-light-transmitting range. A surface of a portion outside the effective optical range is formed of a light-absorbing material, so that light is prevented from directly entering the lens through the communicating passage.

Abstract: A lens barrel includes: an image pickup optical system including a plurality of lenses. The plurality of lenses includes an adjusting lens for a shift adjustment in a direction perpendicular to an optical axis of the image pickup optical system. The lens barrel further includes a lens frame holding the adjusting lens; and a housing holding the lens frame and including a wall portion. The lens frame comprises a plurality of protrusions coming contact with the wall portion and each of the plurality of protrusions has a protruding amount which differs from the other for correcting a tilt of an optical axis of the adjusting lens.

Abstract: A method for aligning and assembling two lens pieces, and a machine to accomplish this task are provided. In one example of the method, the method includes holding an upper lens above a lower lens, holding the lower lens in a horizontal position, lowering the upper lens into a contact position with the lower lens, and allowing the upper lens to self-align to a top surface of the lower lens.

Abstract: The invention provides a lens barrel, an imaging device and an information terminal device using the lens barrel. The lens barrel includes: at least one lens group which constitutes an imaging optical system; a lens frame which retains the at least one lens group; and a retaining frame which retains the lens frame, the at least one lens group being capable of moving from a collapse position to a photographable position, at least one cam member being arranged between the lens frame and the retaining frame, and tilt of the lens frame relative to the retaining frame being changed by moving the at least one cam member.

Abstract: A mounting process/device for mounting and alignment of micro optical electro-mechanical systems (MOEMS) elements and/or devices. The mounting process/device can be obtained by attaching at least one optical element onto a mounting system, which contains an embedded optical element. The attached optical element(s) are aligned with respect to the embedded optical element.

Abstract: Disclosed is a lens barrel capable of placing at least a part of multiple lens groups in a retraction status in which the part of the multiple lens groups are accommodated in the lens barrel, and at least a part of the multiple lens groups in a photographing status in which the part of the multiple lens groups are moved closer to an object. The distance between a first lens group (11) located closest to the object and a second lens group (12) located second closest to the object changes in the optical axis direction. A spring mechanism (30) having a compression spring function and a torsion coil spring function in combination is arranged between the first lens group (11) and the second lens group (12). This spring mechanism biases (30) at least the second lens group (12) in the optical axis direction and in a rotational direction in a plane perpendicular to the optical axis.

Abstract: A lens drive device may include a movable lens body provided with a lens, a support body which movably supports the movable lens body through a plate spring in an optical axis direction, and a magnetic drive mechanism for driving the movable lens body in the optical axis direction. The plate spring may include an outer side connecting part connected with the support body, an inner side connecting part connected with the movable lens body, and an arm part which is connected with the inner side connecting part and the outer side connecting part through an inner connecting portion and an outer connecting portion. The arm part may include a meandering part which comprises a plurality of extending parts which is extended in a radial direction is serially connected through inner side turning portions and outer side turning portions.

Abstract: A diode-laser bar package includes two diode-laser bars mounted on a heat sink with slow-axes of the diode-laser bars aligned. Three spaced apart mounting bosses extend from the front of the heat sink. The package includes two cylindrical lens assemblies. Each lens assembly has an elongated cylindrical lens bonded to a rectangular mounting block. The cylindrical lenses are aligned with the diode-laser bars. Lateral faces of the mounting block are epoxy-bonded to lateral faces of the mounting bosses. Bonding is effected by injecting liquid epoxy between the faces to be bonded though holes extending through the mounting blocks from front to the lateral faces of the mounting blocks. The liquid epoxy is then cured to complete the attachment.

Abstract: A thermal contraction stress and a residual contraction stress caused by a difference between the linear expansion coefficients of an optical element unit and a carrier are reduced as much as possible. An optical module includes an optical element unit including optical elements requiring a stress control, and a carrier which supports the optical element unit. As the carrier is made of a material having the same property as that of the substrate material of the optical element, the thermal contraction stress is reduced.