An active alignment machine includes a base, a first pillar, a second pillar, a distribution module, a first alignment module, a second alignment module and a third alignment module. The first pillar has a first pillar top surface. The second pillar has a second pillar top surface. The first pillar top surface and the second pillar top surface cooperatively support plural assembling specifications. The distribution module is installed on the base and arranged between the first pillar and the second pillar. The first alignment module, the second alignment module and third alignment module are replaceable to be assembled with or dissembled from the first pillar top surface and the second pillar top surface. The first alignment module, the second alignment module and third alignment module work with the distribution module to perform the active alignment on a first-type product, a second-type product and a third-type product, respectively.

Disclosed are an optical path changing unit and a lens assembly comprising same. The optical path changing unit comprises: a base; a prism unit a part of which is connected to the base and the other part of which is arranged to be movable within the base; and first to third optical image stabilizing (OIS) drive units which change the prism unit into a tiltable position.

Implementations described herein generally relate to scanning beam display systems and more specifically, to systems and methods for improved image alignment of such scanning beam display systems. The method comprises providing a display system comprising a display screen having a plurality of display screen region each with a corresponding light engine module having a servo laser beam and an excitation laser beam, scanning the servo laser beam of a light engine module in an outer scanning region outside of the light engine module's corresponding display screen region, detecting servo laser beam feedback light to measure an alignment error of the light engine module relative to the light engine module's corresponding display screen region, and adjusting alignment of the excitation laser beam based on the measured alignment error.

An alignment mechanism to position and focus a lens assembly includes a housing and an eccentric shaft supported by the housing. The eccentric shaft is configured to rotate with respect to the housing. The alignment mechanism further includes a lens assembly having a bracket coupled to the eccentric shaft, and an actuator assembly, coupled to the bracket of the lens assembly and configured to rotate the lens assembly about the eccentric shaft. The alignment mechanism further includes at least one thrust drive nut mounted on the eccentric shaft, the at least one thrust drive nut being configured to move the eccentric shaft and the bracket of the lens assembly in a z-axis direction.

A method for fabricating a semiconductor device is provided. The method includes: loading a substrate on a stage of an apparatus for inspecting the substrate; extracting a first light having a first wavelength from a light by using a light source; acquiring first position information on at least one focal point, formed on the substrate, based on the first wavelength by using a controller, the at least one focal point being a pre-calculated at least one focal point; adjusting a position of at least one from among an objective lens and at least one microsphere in a vertical direction by using the first position information in the controller; condensing the first light, which has passed through the at least one microsphere, on the at least one focal point formed on the substrate; and inspecting the substrate by using the first light condensed on the at least one focal point.

An optical element driving mechanism is provided. The optical element driving mechanism includes an immovable part, a movable part, a driving assembly, and a sensing assembly. The movable part is connected to an optical element including an optical axis. The movable part is movable relative to the immovable part. The driving assembly drives the movable part to move relative to the immovable part. The sensing assembly senses the movement of the movable part relative to the immovable part.

The present disclosure provides an optical system, including a first optical mechanism. The first optical mechanism includes a first movable part, a fixed assembly, a first driving assembly and a guiding assembly. The first movable part includes an optical element. The first movable part is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable part to move relative to the fixed assembly. The guiding assembly is configured to guide the first movable part to move relative to the fixed assembly. A friction force is generated between the first movable part and the guiding assembly, and the first movable part is temporarily positioned on the fixed assembly through the friction force.

An optical assembly for an autofocus imaging system for capturing at least one image of an object appearing in an imaging field of view (FOV) is provided. The optical assembly includes a front aperture along an optical axis and a front lens group along the optical axis that receives light from the object of interest. The position of the front lens group is adjustable to change a focal distance of the optical assembly. The optical assembly further includes an actuator physically coupled to the front lens group that adjusts the position of the front lens. A rear lens group is disposed along the optical axis to receive the light from the front lens group, and an imaging sensor is disposed at a back focal distance of the rear lens group, to detect the light.

The present disclosure provides a camera module and an optical lens thereof, an optical lens element and a manufacturing method therefor, and a method for assembling a large wide-angle camera module, wherein the camera module comprises a lens and a photosensitive assembly. The lens comprises a lens barrel, at least one first lens element unit and at least one second lens element unit, and is further provided with at least one notch, wherein the first lens element unit and the second lens element unit are disposed in the lens barrel, and the first lens element unit is configured as a non-rotating body, and wherein the notch is provided in the lens barrel, or the notch is formed in the first lens element unit, or the notch is formed in the second lens element unit, and the first lens element unit is marked by means of the notch.

A camera assembly includes a motor configured to generate a driving power; a motor shaft that extends from the motor, such as to define a first axis, and is configured to rotate by the driving power of the motor; a pulley configured to rotate on a second axis, that is spaced from the first axis, according to rotation of the motor shaft; a belt configured to couple the motor shaft and the pulley, and convert the rotation of the motor shaft to rotation of the pulley, and tension of the belt applies a force to the motor shaft in a direction towards the second axis; a camera module configured to be mounted on the pulley and rotate together with the pulley; and an elastic body configured to apply a biasing force to the motor shaft such as to bias the motor shaft in a direction away from the second axis.