A camera prevents a lens barrel from extending accidentally upon receiving, for example, an external impact. A camera includes a barrel having a guide groove extending in X-direction, a lens barrel including an engagement protrusion protruding radially outward and engaged with the guide groove on the barrel, a switch spring extending between a spring engagement portion and the engagement protrusion, a drive lever rotatable about a lever shaft, a stopper rotatable about a stopper shaft in the drive lever, and a stopper urging spring urging the stopper. The drive lever includes a pusher that pushes the engagement protrusion in the positive X-direction and a rotation restrictor that restricts rotation of the stopper. The stopper includes a restraint portion that is to be on a path of the engagement protrusion to restrain movement of the engagement protrusion in the positive X-direction when the drive lever is at an initial position.

A lens unit includes: a lens including a lens part formed at the center of the lens, and a flange part that extends radially outward from the periphery of the lens part and includes a rear end surface on its rear side; a transparent spacer that is disposed behind the lens in the optical axis direction and used for focusing the lens part, the spacer including a front end surface that opposes to the rear of the lens, a spaced-apart part that opposes to the lens part and is spaced apart rearward in the optical axis direction from the lens part, and a bonded peripheral part that extends radially outward from the periphery of the spaced-apart part; and an adhesive that is disposed between the rear end surface of the flange part and the bonded peripheral part and bonds the lens and the spacer.

The camera module has a lens assembly comprising a body and a heating element with an optically transparent coating applied to the body for heating it as electric current flows for removing water-based obstructions. The module includes a power supply for supplying electric current to the optically transparent coating through conductors, and a lens barrel (for receiving the body comprising a passageway for the conductors extending within the lens barrel towards the lens body. The method comprises applying to the lens body, high- and low-refractive index layers and an aluminium-doped zinc oxide layer.

An imaging lens system includes a lens barrel element and an imaging lens assembly disposed on the lens barrel element and including a first imaging lens element, a spacer element and a second imaging lens element. The spacer element has a second object-side contact surface corresponding to a first image-side contact surface of the first imaging lens element. The second imaging lens element has a third object-side contact surface corresponding to a second image-side contact surface of the spacer element. The lens barrel element and the spacer element form a buffer structure closer to an optical axis than the first image-side contact surface and including a first gap and a second gap located closer to the optical axis than the first gap. The first gap overlaps the third object-side contact surface in a direction parallel to the optical axis. A step difference is between the first and second gaps.

A lens barrel having one end and the other end includes: a first frame that is movable and holds optical members; a second frame that is arranged to be relatively movable toward the other end with respect to the first frame, and holds optical members; and a third frame that is mounted on the first frame so as to be movable, and holds an optical member. The first frame includes a first stopper portion that comes into contact with the third frame to limit movement toward the one end. The first frame includes a second stopper portion that comes into contact with, when the first frame is most distant from the second frame, the third frame to limit movement toward the other end. The second frame includes a third stopper portion that has a contact surface located close to the one end with respect to the second stopper portion, and that comes into contact with, when the second frame is located within a range on the optical axis where the third frame is movable, the third frame to limit movement toward the other end.

The present invention discloses a lens module and a system for producing an image. The lens module includes a print circuit board, a spacer, attached onto the print circuit board, and the spacer having a through hole; a lens assembly, supported by the spacer and covered the through hole; an image sensor, mounted on the print circuit board and electrically connected with the print circuit; the lens assembly is configured for capturing light reflected by an object and transmitting the light into the image sensor; the image sensor is configured for converting the light into raw image signals. The lens module may be a simple optics module and thinner than a related lens module.

An optical system has a virtual lens comprising an array of image sensors and processor in communication with the virtual lens and configured to focus the at least one virtual lens by way of mathematical image processing of a dynamic object plane.

A plastic lens element includes an effective optical portion and a peripheral portion in order from an optical axis to an edge thereof. The peripheral portion includes a plurality of rib structures, wherein each of the rib structures has a strip shape in a radial direction of the optical axis, and the rib structures are arranged around the effective optical portion and indirectly connected to the effective optical portion.

A lens barrel (3) holding an imaging lens (2) is inserted into a carrier (5) accommodated in an actuator (4), and the carrier (5) is held at a position in an optical axis direction of the imaging lens (2) by the actuator (4). The position of the imaging lens (2) in the optical axis direction and the eccentricity of the imaging lens (2) are adjusted on the basis of imaging information of an image sensor (6), and the lens barrel (3) is fixed to the carrier (5).

An annular optical element includes an outer annular surface, an inner annular surface, a first side surface, a second side surface and a plurality of strip-shaped wedge structures. The outer annular surface surrounds a central axis of the annular optical element and includes at least two shrunk portions. The first side surface connects the outer annular surface and the inner annular surface. The second side surface connects the outer annular surface and the inner annular surface, wherein the second side surface is disposed correspondingly to the first side surface. The strip-shaped wedge structures are disposed on the inner annular surface, wherein each of the strip-shaped wedge structures is disposed along a direction from the first side surface towards the second side surface and includes an acute end and a tapered portion connecting the inner annular surface and the acute end.