A lens barrel including a first lens, an actuator that drives the first lens, a first barrel that holds a first cam follower and the actuator and moves in an optical axis direction, a second lens, and a second barrel that holds a second cam follower and the second lens and moves in the optical axis direction, the second barrel having a first hole portion in which the first cam follower is disposed.

An illumination device has a coherent light source, an optical device that diffuses the plurality of coherent light beams and illuminates a predetermined illumination area, and a timing control unit that individually controls incident timing of the plurality of coherent light beams to the optical device or illumination timing of the illumination area, wherein the optical device has a plurality of diffusion regions, the diffusion regions being provided corresponding to the plurality of coherent light beams, the plurality of diffusion regions illuminate the illumination range by diffusion of incident coherent light beams, the plurality of diffusion regions have a plurality of element diffusion regions, the plurality of element diffusion regions illuminate partial regions in the illumination area by diffusion of incident coherent light beams, and at least parts of the partial regions illuminated by the plurality of element diffusion regions are different from one another.

A camera includes a counter rotatable about a support shaft, a spring that urges the counter in a first rotation direction, a rotary member and a drive cam that rotate the counter in a direction opposite to the first rotation direction, a stopper rotatable about the support shaft, and a spring that urges the stopper in a second rotation direction. The counter includes an outer circumferential surface that changes an indication in a circumferential direction, and a first engagement portion including a plurality of projections. The stopper includes contact tabs that receive a force acting in a direction opposite to the second rotation direction from at least one of a film pack or a door, and an engagement tab engageable with one of the projections on the first engagement portion on the counter to restrict rotation of the counter in the first rotation direction.

An apparatus including: a first gripping member having a first magnetic element and moveable between a first position and a second position; a first biasing member configured to bias the first gripping member toward the first position; and a second magnetic element selectively operable in a first mode, in which the second magnetic element interacts with the first magnetic element to overcome the first biasing member and move the first gripping member to the second position, and a second mode, in which the second magnetic element does not overcome the first biasing member such that the first gripping member rests in the first position.

Methods and apparatus for automatically expanding the eyebox of an optical imaging device by tracking the movement of an operator's eye, and automatically repositioning the exit pupil of the optical imaging device to follow the movement of the eye.