A deformable mirror can include a reservoir containing a ferrofluid. The deformable mirror can also include a reflective face sheet covering a front side of the reservoir such that a back side of the reflective face sheet is exposed to the ferrofluid. The reflective face sheet can have a reflective surface on a front side of the reflective face sheet opposite the back side. The reflective face sheet can have a non-uniform thickness between the front and back sides of the reflective face sheet to provide stiffness for the reflective face sheet. In addition, the deformable mirror can include one or more electromagnets operable to generate a magnetic field that acts on the ferrofluid to deform the reflective face sheet. A deformable mirror system can further include a control system operably coupled to the one or more electromagnets to control the magnetic field and thereby a deformation of the reflective face sheet.

An imaging apparatus including: an image sensor having a photo-sensitive surface; an optical device arranged on an optical path of light incidenting on the photo-sensitive surface, the optical device being electrically controllable to have a spatially variable focal length; and a processor configured to: generate and send a drive signal to the optical device to compensate for field curvature of optical device by adjusting focal lengths of different portions of the optical device to different extents, wherein a focal length of a first portion of the optical device is higher than a focal length of a second portion of the optical device surrounding the first portion; and control the image sensor to capture a distorted image of a real-world environment.

There is provided an information processing apparatus and method, and a projection imaging apparatus and an information processing method capable of suppressing an increase in processing amount of processing related to update of correction information used for geometric correction and the like, the information processing apparatus detecting, in regard to projection imaging apparatuses each having a projection unit that projects an image on a projection surface and an imaging unit that images the projection surface, a corresponding point between a pixel of the projection unit and a pixel of the imaging unit for a relation between one of the projection imaging apparatuses whose posture has changed and one of the projection imaging apparatuses whose posture has not changed, and estimating a relative posture of the projection imaging apparatus whose posture has changed with respect to the projection imaging apparatus whose posture has not changed.

A spiral phase plate, according to one embodiment, for generating a Laguerre Gaussian beam by reflecting an incident beam emitted from a light source, may comprise: a first quadrant area in which the step height increase rate per unit angle decreases progressively in one direction from the point with the lowest step height to the point with the highest step height; and a second quadrant area in which the step height increase rate per unit angle increases progressively in the one direction.

A projection lens includes a plurality of lens units, and a diaphragm, wherein in a case where a lens unit that moves in an optical axis direction of the projection lens during focusing serves as a focus lens unit among the plurality of lens units, at least one lens included in a lens unit that is different from the focus lens unit among the plurality of lens units and is disposed more towards a reduction conjugate side than the diaphragm is configured to move in the optical axis direction when an amount of field curvature is adjusted to focus on a curved projection surface, and wherein when the amount of field curvature is adjusted, both the at least one lens and the focus lens unit move in the optical axis direction.

A system and method of providing a deformed FAC Lens to a multi-emitter diode bar laser system comprised of a lens holder and FAC lens wherein the FAC Lens is deformed so as to offset or compensate for the inherent smile properties present in a multi-emitter diode bar.

An optical system is provided. The optical system includes a first optical module with a first light-entering hole, a second optical module with a second light-entering hole, and a third optical module with a third light-entering hole. The second light-entering hole is close to the first light-entering hole and the third light-entering hole. The focal length of the second optical module is different from the focal length of the first optical module and the focal length of the third optical module.

An optical member driving mechanism is provided. The optical member driving mechanism includes a movable portion and a fixed portion. The movable portion includes a holder for holding an optical member with an optical axis. The movable portion is movable relative to the fixed portion. The fixed portion has a housing and a base. The housing is disposed on the base, and includes a top surface and a side surface. The top surface extends in a direction that is parallel to the optical axis. The side surface extends from an edge of the top surface in a direction that is not parallel to the optical axis. The side surface has a rectangular opening.

This document relates to an optical device that uses adaptive optics as part of an optical system. The adaptive optics can be used to correct light rays that correspond to a portion of an eye box based on information received from an eye-tracking unit, and can also correct for aberrations in the optics in the optical device. The adaptive optics include corrective elements that can be modified using modifying elements to correct the angle of light rays, such that rays associated with a specific pupil position and gaze direction of a user's eye can be made parallel and ensure a high quality image is viewed by the user.

An electronic device is disclosed. The electronic device of the present disclosure includes a light emitting unit for providing image light, and a display unit for reflecting the image light and transmitting the reflected image light to eyes of a user. The display unit includes a lens unit and a reflective surface for reflecting the image light. The reflective surface is formed of a 3-dimensional curved surface having different curvatures in a first direction and in a second direction perpendicular to the first direction, thereby correcting astigmatism. An electronic device according to the present invention may be associated with an artificial intelligence module, robot, augmented reality (AR) device, virtual reality (VR) device, and device related to 5G services.