Abstract: A rotary apparatus includes a motor including a rotary shaft, a plurality of gears including an output gear, and a housing accommodating the motor and the plurality of gears. The housing is separable into a first housing and a second housing. The motor includes a first end portion and a second end portion located on an opposite side of the first end portion. The rotary shaft is derived from the first end portion. The second housing includes a first regulating portion regulating a position of a part of the motor on the first end portion. The first housing includes a projecting portion projecting toward the second housing side. The projecting portion urges the second end portion of the motor toward the first regulating portion side directly or via another member.

Abstract: A rotary apparatus includes a motor, a plurality of gears, and a sensor configured to detect a rotation angle of one of the plurality of gears. The sensor includes a first connection terminal electrically connecting to the outside, and a base portion. The first connection terminal is disposed at the base portion. A second connection terminal is disposed at the base portion.

Abstract: A lens barrel includes a first support frame and a second support frame. The first support frame has a cam groove. The second support frame has an annular main body with a cam follower that extends outwardly in a radial direction. The cam follower is slidably disposed in the cam groove and has a first cam portion, a second cam portion and a connecting portion. The second cam portion is aligned with the first cam portion along the circumferential direction of the main body. The connecting portion connects the first cam portion and the second cam portion to create a space between the connecting portion and the cam groove.

Abstract: A method of turning the surface of a die, which is used to make a product, into an antireflective roughened one includes the steps of: a) producing a first roughness on the surface of the die; and b) producing a second roughness, which is smaller than the first roughness, on the surface of the die on which the first roughness has already been produced.

Abstract: A lens barrel 111 according to the present invention includes: a lens group 220 which moves along an optical axis direction 300; and a lens holding frame 224 holding a lens group 220. A guide hole 406 is provided in the lens holding frame 224, the guide hole 406 being penetrated by a main shaft 440 having a circular cross section. A cross section of the guide hole 406 taken orthogonal to a longitudinal direction of the main shaft 440 includes at least two linear portions 406a, and the main shaft 440 is in contact with the two linear portions 406a.

Abstract: An imaging device support structure includes a master flange having an opening portion through which an optical axis passes, an imaging device which is directly or indirectly attached to the master flange and is positioned in the opening portion as viewed in an optical axis direction, and a shielding member which shields a gap between the master flange and the imaging device in the opening portion. The shielding member includes a slit or a groove and is pressed against an opening edge of the opening portion.

Abstract: To produce a subject's image on an imager as accurately as possible, a technique that is effectively applicable to the process of assembling an optical system is provided. An imaging device includes: an imager; a plate member, to which the imager is attached; and a holding member configured to hold the plate member. The plate member has a first portion, through which at least one fixing hole has been cut, and a second portion, to which the imager is attached and through which at least one adjusting hole has been cut. The plate member is held by the holding member using a number of fastening members to be introduced through the at least one fixing hole and the at least one adjusting hole. When the first portion is fixed on the holding member, the fastening member that is introduced through the at least one adjusting hole adjusts the relative position of the second portion to the holding member.

Abstract: A barrier unit is provided that suppresses reflection of light at end faces of blades when the blades are in an open state and that prevents the blades from riding on top of each other. The barrier unit includes a base; and a pair of blades mounted on the base, the pair of blades being configured to be positioned in an open state and a closed state and to contact each other at predetermined end faces of the blades in the closed state. An inclined portion is provided at a central portion in a longitudinal direction, of each predetermined end face of the blades, the inclined portion defining a plane inclined with respect to an optical axis of a lens. A parallel portion is provided on both sides of the inclined portion of each predetermined end face of the blades, the parallel portion defining a plane parallel to the optical axis.

Abstract: The lens barrel of the present invention includes: a lens; and a light blocking member provided in the vicinity of the lens for blocking part of light traveling toward the lens, a main constituent of the light blocking member being a thermoplastic elastomer resin.

Abstract: The present invention provides a barrier unit structure that can avoid not only ruining the appearance of a barrier unit due to a vertical misfit of blades that contact with each other at their edges when closed but also interfering with smooth movement of the blades due to their unintentional overlap. The barrier unit includes: a base, which defines a first window; a cap, which defines a second window and which is arranged so that the second window faces the first window; and a number of blades, which are arranged between the base and the cap so as to open or close with respect to the first and second windows. In a space between the base and the cap, clearance e left in the vicinity of a first position, where the blades contact with each other at their edges when closed, is smaller than clearance d left at a second position, which is different from the first position.

Abstract: A lens barrel 111 according to the present invention includes: a lens group 220 which moves along an optical axis direction 300; and a lens holding frame 224 holding a lens group 220. A guide hole 406 is provided in the lens holding frame 224, the guide hole 406 being penetrated by a main shaft 440 having a circular cross section. A cross section of the guide hole 406 taken orthogonal to a longitudinal direction of the main shaft 440 includes at least two linear portions 406a, and the main shaft 440 is in contact with the two linear portions 406a.

Abstract: The lens barrel of the present invention includes: a lens; and a light blocking member provided in the vicinity of the lens for blocking part of light traveling toward the lens, a main constituent of the light blocking member being a polymer alloy resin.

Abstract: A barrier unit, of which the cap edge is not easily deformed even under some external force, is provided. The barrier unit includes: a base, which defines a first window; a cap, which defines a second window and which is arranged so that the second window faces the first window; and at least one blade, which is arranged between the base and the cap so as to open or close with respect to the first and second windows. A surface of the cap that is opposed to the at least one blade has a notched portion around the second window.

Abstract: The present invention provides a barrier unit, of which the blades can be opened fully. The barrier unit is designed to be attached to a camera in order to protect the lens of the camera and is ready to open or close as needed. The barrier unit includes: a base with a cylindrical portion; a first ring, which is arranged so as to rotate around the cylindrical portion; and first and second blades, which are interlocked with the first ring and which are gradually opened and closed as the first ring rotates. When one of the first and second blades is fully opened, the first ring is further movable to turn the other blade in a closing direction.

Abstract: An imaging device support structure includes a master flange having an opening portion through which an optical axis passes, an imaging device which is directly or indirectly attached to the master flange and is positioned in the opening portion as viewed in an optical axis direction, and a shielding member which shields a gap between the master flange and the imaging device in the opening portion. The shielding member includes a slit or a groove and is pressed against an opening edge of the opening portion.

Abstract: To produce a subject's image on an imager as accurately as possible, a technique that is effectively applicable to the process of assembling an optical system is provided. An imaging device includes: an imager; a plate member, to which the imager is attached; and a holding member configured to hold the plate member. The plate member has a first portion, through which at least one fixing hole has been cut, and a second portion, to which the imager is attached and through which at least one adjusting hole has been cut. The plate member is held by the holding member using a number of fastening members to be introduced through the at least one fixing hole and the at least one adjusting hole. When the first portion is fixed on the holding member, the fastening member that is introduced through the at least one adjusting hole adjusts the relative position of the second portion to the holding member.

Abstract: The lens barrel of the present invention includes: a lens; and a light blocking member provided in the vicinity of the lens for blocking part of light traveling toward the lens, a main constituent of the light blocking member being a thermoplastic elastomer resin.

Abstract: A lens barrel includes a first support frame and a second support frame. The first support frame has a cam groove. The second support frame has an annular main body with a cam follower that extends outwardly in a radial direction. The cam follower is slidably disposed in the cam groove and has a first cam portion, a second cam portion and a connecting portion. The second cam portion is aligned with the first cam portion along the circumferential direction of the main body. The connecting portion connects the first cam portion and the second cam portion to create a space between the connecting portion and the cam groove.

Abstract: The lens barrel of the present invention includes: a lens; and a light blocking member provided in the vicinity of the lens for blocking part of light traveling toward the lens, a main constituent of the light blocking member being a polymer alloy resin.

Abstract: A barrier unit, of which the cap edge is not easily deformed even under some external force, is provided. The barrier unit includes: a base, which defines a first window; a cap, which defines a second window and which is arranged so that the second window faces the first window; and at least one blade, which is arranged between the base and the cap so as to open or close with respect to the first and second windows. A surface of the cap that is opposed to the at least one blade has a notched portion around the second window.