An optical element driving mechanism is provided. The optical element driving mechanism includes a fixed portion, a movable portion, a first driving assembly, and a positioning element. The movable portion is movably disposed on the fixed portion and comprises an optical element, wherein the optical element moves in the first direction. The first driving assembly is at least partially disposed on the fixed portion. The positioning element is rotatably disposed on the fixed portion or the movable portion, wherein when the first driving assembly is not activated, the positioning element is used to limit the position of the movable portion relative to the fixed portion to a limit position.

Actuators for rotating or tilting an optical element, for example an optical path folding element, comprising a voice coil motor (VCM) and a curved ball-guided mechanism operative to create a rotation or tilt movement of the optical element around a rotation axis upon actuation by the VCM. In some embodiments, an actuator includes two, first and second VCMs, and two curved ball-guided mechanisms operative to create rotation or tilt around respective first and second rotation axes.

A method for ascertaining an alignment of a lens system. The method include: aligning the lens system according to a provided first alignment; ascertaining a first refracted optical signal, the first refracted optical signal being ascertained by a refraction of a first emitted optical signal at the lens system (aligned according to the first alignment; ascertaining a first attribute value, the first attribute value characterizing an attribute of the first refracted optical signal; training a first machine learning system as a function of the first alignment and the ascertained first attribute value, the machine learning system being designed to ascertain an output for an alignment that characterizes the attribute of the alignment; ascertaining the alignment of the lens system based on an output of the first machine learning system.

Provided is an optical axis alignment apparatus of a camera module including a chart unit, a substrate alignment unit, an optical axis alignment unit and a control unit, and wherein the control unit calculates a principal point of the images for optical axis alignment by using the acquired plurality of images for optical axis alignment, and controls the substrate alignment unit or the optical axis alignment unit such that a center of the image sensor is located coaxially with the calculated principal point.

A lens apparatus includes an optical element, a fixed member, a movable member configured to hold the optical element and movable in an optical axis direction relative to the fixed member, a guide member configured to guide a movement of the movable member in an optical axis direction, a first support member and a second support member spaced from each other in the optical axis direction, a pair of rotating elements held by the first support member and the second support member, respectively, and a biasing member configured to bias the pair of rotating elements and the guide member into contact with each other. The first support member and the second support member are fixed to one of the movable member and the fixed member. The guide member is fixed to the other of the movable member and the fixed member.

The actuator assembly comprises a first part (102), a second part (110) and a helical bearing arrangement. The helical bearing arrangement is arranged to guide helical movement of the second part with respect to the first part around a helical axis H such that rotation of the second part around the helical axis is converted into helical movement of the second part. The first and second parts comprise respective stops (152, 162) that are arranged such that the stops are spaced from each other throughout an operating range of said helical movement of the second part relative to the first part. The stops are configured to engage if the second part is moved relative to the first part in at least one direction other than the direction of said helical movement such that the engagement of the stops restricts relative movement of the first and second parts.

Provided is a vibration wave motor including: a vibrator; a pressurizing member configured to pressurize the vibrator against a friction member; a holding member configured to hold the vibrator; and a buffering member provided between the vibrator and the holding member. The vibrator and the friction member are moved relatively to each other in a relative movement direction by vibration of the vibrator, and the holding member holds the vibrator in such a manner that an extending part extending in a pressurizing direction of the pressurizing member sandwiches the vibrator and the buffering member.

An instruction position detection device includes: a processor that acquires a movement amount of an instruction position of an indicator capable of detecting the movement amount, and performs a control of projecting, from a projection apparatus, an image including a setting image for setting an origin of the instruction position of the indicator, and the processor is configured to: acquire an input result of a setting operation of an operator in a state where an instruction for a position indicated by the setting image in a projected projection image is provided by the indicator; and perform a control of detecting the instruction position of the indicator in the image based on the position of the setting image in the image and the movement amount after the input result of the setting operation is acquired.

A flexure guidance system may be provided for controlling movement of an optical subassembly and/or a connected combiner lens. For instance, the flexure guidance system may include a distal end piece, a proximal end piece, and multiple wire flexures that link the distal end piece to the proximal end piece. The linking wire flexures may be spaced to form an interior cavity between the distal end piece and the proximal end piece. This interior cavity may house various electronic components. One or more actuators in the system may move the electronic components according to input signals along different axes of movement provided by the wire flexures. Various other methods, systems, and computer-readable media are also disclosed.

An optical element driving mechanism is provided, including a fixed portion, a movable portion, a driving assembly, and a stopping assembly. The movable portion is movably connected to the fixed portion, wherein the movable portion is used for connecting to an optical element having a main axis. The driving assembly is disposed on the fixed portion or the movable portion, and the driving assembly is used for driving the movable portion to move relative to the fixed portion. The stopping assembly is connected to the movable portion and the fixed portion.