摘要:
A hinge ball for a variable capacity wobble plate compressor includes a central through hole 27 for permitting a shaft 5 to loosely extend therethrough, and an outer peripheral wall 9b in a convex form for being slidably fit with an inner peripheral wall 43a in a concave form of a boss 43 of a drive hub 41 rotatively fitted on the shaft 5. The shaft 5 is higher in hardness than the hardness of the boss 43 of the drive hub 41, and the outer peripheral surface 9b in sliding contact with the inner peripheral surface 43a of the boss 43 of said drive hub 41 is lower in hardness than the hardness of the shaft 5 and the boss 43 of the drive hub 41 or equal in hardness thereto. The hardness of the inner peripheral wall 9a defining the central through hole 27 is made higher than the hardness of the boss 43 of the drive hub 41.
摘要:
A zoom lens barrel is provided having a plurality of lens groups which are moved with respect to one another along a predetermined path. The zoom lens barrel comprises a driving barrel which rotates about an optical axis of the plurality of lens groups and at least three telescoping barrels which are moved in the direction of the optical axis by rotation of the driving barrel. Each telescoping barrel which is mounted on an inner periphery of another telescoping barrel of the telescoping barrels, travels a greater distance along the optical axis direction than the another telescoping barrel. A lens group driving mechanism is provided for moving the plurality of lens groups in the optical axis direction by movement of the at least three telescoping barrels in the optical axis direction.
摘要:
A camera having a zoom lens barrel that includes an aperture size changing mechanism including a pair of light intercepting members which are inserted into a retracted from a rectangular-shaped photographing aperture of the camera for changing the photographing aperture size. The camera further includes a non-rotational cylinder which moves in the direction of the optical axis of the zoom lens without rotating. A rotational cylinder is also included and is driven to rotate with respect to the non-rotational cylinder about the optical axis. A gear supporting member is supported on the non-rotational cylinder. The gear supporting member includes a raised portion projecting toward the photographing aperture. The camera further includes a gear train which is supported on the gear supporting member for transmitting a drive force to the rotational cylinder. At least a part of the gear train is supported by the raised portion, which is formed such that the orthographic projection thereof may not overlap the pair of light intercepting members in the optical axis direction.
摘要:
A lens centering apparatus of a lens barrel having therein a lens supporting frame includes male threads provided on an outer periphery of the lens supporting frame, and female thread sets provided on the lens barrel and having different centers. The female thread sets can be selectively engaged by the male threads of the lens supporting frame.
摘要:
A rotary feed mechanism including gears provided on an outer peripheral surface of an inner ring, male threads on an outer peripheral surface of an inner ring, and an outer ring having female threads which .engage with the male threads of the inner ring. At least one male thread formed between the gears of the inner ring is engaged with a female thread provided on the outer ring, and at least one pinion engages with at least one of the gears, regardless of the axial position of the inner ring with respect to the outer ring. When the at least one pinion is rotated, the rotation is transmitted to the inner ring, and the inner ring is moved in an optical axis direction, with respect to the outer ring, in accordance with the engagement between the male and female threads.
摘要:
A light intercepting frame which has an opening which permits only usable light (luminous flux) to pass therethrough and which is provided on a final lens surface of a final lens of a zoom lens.
摘要:
A cover unit for lens unit having a lens barrel, which has a cylindrical support member to be coupled to an end of the lens barrel, at least one engaging pin member is provided at a predetermined position on the outer circumferential surface thereof. Further, the cover unit has a cylindrical hood member capable of being superposed on the lens barrel, at least one cam groove to slidably receive the at-least-one engaging pin member therein being formed on the inner circumferential surface of the hood member, wherein by means of the engagement of the at-least-one engaging pin member with the at-least-one cam groove, the hood member moves in its axial direction relative to the support member upon rotation of the hood member relative to the support member. Lens barriers are supported by the support member for covering the end of the lens barrel, the lens barrier means being openable. The lens barriers are driven in accordance with the movement of the hood member.
摘要:
A code plate mounting device for mounting a code plate on an outer peripheral surface of an annular member in a lens barrel. A pair of engaging portions are provided on the outer peripheral surface of the annular member, and are spaced from one another in a circumferential or axial direction of the annular member. A tension member is connected at one end to one end of the code plate. An engaging portion is provided on the other end of the code plate to engage with one of the engaging portions of the annular member. An engaging portion is provided on the other end of the tension member to engage with the other engaging portion of the annular member.
摘要:
A flexible printed-circuit board covered with a coverlay is produced by bonding (a) a flexible printed-circuit board that comprises a flexible base having a surface bearing a circuit and (b) a polyimide film having a surface treated to increase adhering property and another surface not treated to increase adhering property, each of the surfaces being coated with an adhesive layer, with the adhesive layer on the surface treated to increase adhering property interposed between the polyimide film and the surface bearing the circuit, and then peeling off the adhesive layer coating the polyimide film on the surface not treated to increase adhering property.
摘要:
A zoom lens barrel is disclosed with includes a stationary barrel. A rotatable cam ring is supported by the stationary barrel and is adapted to move along an optical axis direction in association with rotation of the rotatable cam ring. A lens guide ring is adapted to move together with the cam ring along the optical axis direction, and the cam ring is adapted to rotate relative to the lens guide ring, in association with axial movement of the cam ring. Cam grooves are provided for guiding the movement of at least two movable front and rear lens groups, with at least one groove being formed on the cam ring. Lens guide grooves are formed on the lens guide ring and are adapted to correspond to the cam grooves of the cam ring. At least one guide pin is provided which is adapted to extend through an associated cam groove and an associated lens guide groove. The cam grooves and lens guide grooves are shaped such that the movable lens groups can be moved along a predetermined track by the movement which results from axial movement and relative rotation of the cam ring and the lens guide ring.