Abstract: A lens device is capable of simply adjusting the tilt of a lens. A lens holding frame in which a fulcrum portion is tiltably supported by a fulcrum supporting portion is fixed to a lens barrel by tightening a first screw to a first connection portion and a second screw to a second connection portion. The first screw is arranged at a position that is rotated 90° from the fulcrum supporting portion in the clockwise direction, and the second screw is arranged at a position that is rotated 90° from the fulcrum supporting portion in the counterclockwise direction. The first screw is tightened to tilt the lens holding frame about the X-axis, and the second screw is tightened to tilt the lens holding frame about the Y-axis. The amount of tightening of the first and second screws is adjusted to adjust the tilt of a first lens.

Abstract: A second fixed cylinder includes a lens attachment portion having straight-ahead grooves provided therein and a guide groove arrangement portion having a first guide groove and a second guide groove provided therein. A second rotating cylinder rotatably supported by the second fixed cylinder includes a cam groove arrangement portion having cam grooves provided therein and a claw arrangement portion having a first claw portion (third claw portion) fitted to the first guide groove and a second claw portion fitted to the second guide groove. The first guide groove and the second guide groove are arranged so as to deviate from each other in the axial direction. Therefore, the operation range of the second rotating cylinder is not regulated by the movement range of the first claw portion, and a wide operation range of the second rotating cylinder is ensured.

Abstract: A second fixed cylinder includes a lens attachment portion having straight-ahead grooves provided therein and a guide groove arrangement portion having a first guide groove and a second guide groove provided therein. A second rotating cylinder rotatably supported by the second fixed cylinder includes a cam groove arrangement portion having cam grooves provided therein and a claw arrangement portion having a first claw portion (third claw portion) fitted to the first guide groove and a second claw portion fitted to the second guide groove. The first guide groove and the second guide groove are arranged so as to deviate from each other in the axial direction. Therefore, the operation range of the second rotating cylinder is not regulated by the movement range of the first claw portion, and a wide operation range of the second rotating cylinder is ensured.

Abstract: Disclosed is a lens device capable of simply adjusting the tilt of a lens. A lens holding frame in which a fulcrum portion is tiltably supported by a fulcrum supporting portion is fixed to a lens barrel by tightening a first screw to a first connection portion and a second screw to a second connection portion. The first screw is arranged at a position that is rotated 90° from the fulcrum supporting portion in the clockwise direction, and the second screw is arranged at a position that is rotated 90° from the fulcrum supporting portion in the counterclockwise direction. The first screw is tightened to tilt the lens holding frame about the X-axis, and the second screw is tightened to tilt the lens holding frame about the Y-axis. The amount of tightening of the first and second screws is adjusted to adjust the tilt of a first lens.

Abstract: A monitoring lens device includes a focus ring that is provided in an outer circumferential portion of a fixed cylinder and a zoom ring that is provided in an outer circumferential portion of the focus ring. A screw hole that is engaged with a shaft portion of a lock knob is formed in the focus ring, and an opening portion (long groove) through which the lock knob passes is formed in the zoom ring. A spacer is attached to the lock knob and a convex portion of the spacer is fitted into the opening portion.

Abstract: The focus adjustment support device is mounted on a lens apparatus included in an image pickup system for supporting the focus adjustment of the lens apparatus. The image pickup system comprises: an image pickup apparatus having a lens apparatus including focus adjusting section requiring a manual adjustment; and, a case member disposed at a given position for covering at least the image pickup range of the lens apparatus and focus adjusting section, while a portion of the case member corresponding to the image pickup range of the lens apparatus is made of a first light transmissible member having a given optical characteristic. The focus adjustment support device includes a second light transmissible member formed to have an optical characteristic which can provide the same image forming position as in a state where the case member is disposed at a given position.

Abstract: A monitoring lens device includes a focus ring that is provided in an outer circumferential portion of a fixed cylinder and a zoom ring that is provided in an outer circumferential portion of the focus ring. A screw hole that is engaged with a shaft portion of a lock knob is formed in the focus ring, and an opening portion (long groove) through which the lock knob passes is formed in the zoom ring. A spacer is attached to the lock knob and a convex portion of the spacer is fitted into the opening portion.