摘要:
Disclosed herein is a light quantity adjusting device including: first and second diaphragm blades shiftably provided to adjust a size of a diaphragm aperture; a neutral density filter blade provided shiftably in the same direction as the first and second diaphragm blades and having a neutral density filter adapted to cover the diaphragm aperture to reduce a quantity of light passing through the diaphragm aperture; and a drive mechanism adapted to shift the first and second blades and the neutral density filter blade; wherein the drive mechanism is configured to include an actuator, a first cam groove, a second cam groove, a third cam groove, an arm, a first cam-pin, and a second cam-pin.
摘要:
A lens barrel includes: a plurality of lenses disposed in an outer enclosure; and an imaging device that converts image light introduced as an image capturing signal through the plurality of lenses into an image signal. The outer enclosure has a unit assembling portion in which an imaging unit is disposed. The imaging unit includes a centering lens disposed in the bottom portion of the unit assembling portion, a pressing plate that presses the centering lens from the side opposite the bottom portion, a packing disposed on the opposite side of the pressing plate, and an imaging module having the imaging device and disposed on the opposite side of the packing to the pressing plate and pressing the packing against the pressing plate. A working hole through which an adjustment jig is inserted is formed in the peripheral side portion of the unit assembling portion.
摘要:
A light quantity adjusting device includes a plate, an upper diaphragm blade, a lower diaphragm blade, and a diaphragm blade driving unit. The upper diaphragm blade has a semicircular upper main opening and a semicircular upper sub opening. The lower diaphragm blade has a semicircular lower main opening and a semicircular lower sub opening formed. The diaphragm blade driving unit is formed so as to be capable of switching between a state in which a circular main diaphragm opening is formed by the upper main opening and the lower main opening with an optical axis being the center and a state in which a circular sub diaphragm opening that is smaller than the main diaphragm opening is formed by the upper sub opening and the lower sub opening with the optical axis being the center.
摘要:
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 movable unit including a movable lens and a lens holder that holds the movable lens; a lead screw rotated by a drive motor; a nut member made of a metal material threadably engaging the lead screw and connected to the lens holder, the nut member moved by the rotation of the lead screw in the optical axis direction moving the movable unit in the optical axis direction; a guide shaft that guides the movable unit in the optical axis direction, both axial ends of the guide shaft held by the outer enclosure; and an urging spring that presses part of the lens holder against the nut member when the movable unit moves in the optical axis direction.
摘要:
The present invention aims to provide a novel detonation flame spray apparatus which makes it possible to attain stable detonation flame spraying while using a hydrogen fuel.In the detonation flame spray apparatus, stable pulsed detonation with short DDTL has been attained by oppositely injecting hydrogen and oxygen while separating a sub-combustion room and a main combustion room to which a spiral ridge is formed at an inner wall. In addition, by distributing supply ports of flammable gas to the sub-combustion room and a rear end of the main combustion room, high frequency operation can be realized while assuring necessary heat amounts for fusing flame spray material and a mechanism for supplying intermittently the flame spray material to together with the hydrogen fuel has realized enhancement of flame spraying efficiency.
摘要:
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 movable unit including a movable lens and a lens holder that holds the movable lens; a lead screw rotated by a drive motor; a nut member made of a metal material threadably engaging the lead screw and connected to the lens holder, the nut member moved by the rotation of the lead screw in the optical axis direction moving the movable unit in the optical axis direction; a guide shaft that guides the movable unit in the optical axis direction, both axial ends of the guide shaft held by the outer enclosure; and an urging spring that presses part of the lens holder against the nut member when the movable unit moves in the optical axis direction.
摘要:
A light quantity adjusting device includes a plate, an upper diaphragm blade, a lower diaphragm blade, and a diaphragm blade driving unit. The upper diaphragm blade has a semicircular upper main opening and a semicircular upper sub opening. The lower diaphragm blade has a semicircular lower main opening and a semicircular lower sub opening formed. The diaphragm blade driving unit is formed so as to be capable of switching between a state in which a circular main diaphragm opening is formed by the upper main opening and the lower main opening with an optical axis being the center and a state in which a circular sub diaphragm opening that is smaller than the main diaphragm opening is formed by the upper sub opening and the lower sub opening with the optical axis being the center.
摘要:
There is provided a position detection device including a first detection sensor that operates in a predetermined direction, outputs a continuously increasing or decreasing signal, and detects an absolute position of a movable lens moved in an optical axis direction, and a second detection sensor that operates in the predetermined direction, outputs a periodically and continuously changing signal, and detects a relative position of the movable lens. The first detection sensor and the second detection sensor operate at different operation speeds.
摘要:
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.
摘要:
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.