Systems and methods to reduce light loss from a waveguide. The system includes a waveguide having an incoupler to direct light into the waveguide and a laser projector having laser diodes mounted to a substrate. The laser projector is configured to provide a plurality of laser light beams to the incoupler of the waveguide. The system further includes at least one alignment component configured to align the plurality of laser light beams tangent with an edge of the incoupler to minimize light lost from the waveguide through contact with the incoupler more than once.

An optical system is provided, including a movable part, a fixed module, a driving assembly, a position sensor, and an electronic element. The movable part holds an optical element that defines an optical axis, and the fixed module is movably connected to the movable part and has a base. The driving assembly drives the movable part to move relative to the fixed module. The position sensor is disposed on the base for detecting the position of the movable part relative to the fixed module. The electronic element is disposed on the base, wherein the position sensor overlaps the electronic element when viewed along the optical axis.

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, a first driving assembly, and a circuit assembly. The movable portion is used for connecting to an optical element. The movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the movable portion to move relative to the fixed portion. The circuit assembly is used for connecting to an external circuit, and is affixed on the fixed portion.

An optical system is provided, including a holder, a fixed module, a driving assembly, and a first resilient member. The holder is used for holding an optical element that defines an optical axis. The fixed module is movably connected to the holder and has a housing and a base connected to the housing. The base has a bottom surface parallel to the optical axis and a first pillar forming a first surface not parallel to the optical axis. The driving assembly drives the holder to move relative to the fixed module. The first resilient member is disposed on the first surface and movably connecting the holder with the fixed module.

An optical unit including a reflection portion, a movable body, a fixed body; and a rotation support mechanism that rotates the movable body with respect to the fixed body in an axial direction as a rotation axis, in which the rotation support mechanism has a U-shaped spring member disposed between the fixed body and the movable body in the axial direction and applies a force in a direction that widens the space between the fixed body and the movable body, the spring member has a rotation-axis first forming member, the movable body has a rotation-axis second forming member, and the rotation-axis first forming member and the rotation-axis second forming member are arranged at positions where a rotation axis passes through a center of gravity position of the movable body.

An image projection apparatus includes: a light source; an image display element including multiple micromirrors arranged in two dimensions, the multiple micromirrors forming an image display plane, each micromirror having a reflecting surface; and a projection optical system. Conditional expressions (1) and (2) below are satisfied:

θ1≥14 (deg)  (1)

1.2<BF/L<2.2  (2) where θ1 is a maximum tilt angle of the reflecting surface of each micromirror with respect to the image display plane, L is a diagonal length of the image display plane, and BF is a distance between a vertex of a lens within the projection optical system and closest to the image display plane and the image display plane along an optical axis of the projection optical system.

A line narrowing module includes a prism including an entrance side surface that light enters, an exit side surface from which the light is emitted, and a bottom surface, and configured to wavelength-disperse the light having entered the entrance side surface and to emit the light from the exit side surface; a holder portion having a stationary surface on which the bottom surface of the prism is secured; a rotary mechanism portion including a rotary stage on which the holder portion is secured, the rotary stage being configured to rotate the prism around an axis perpendicular to a dispersion plane of the light emitted from the prism; a drive unit configured to rotate the rotary stage; and a grating configured to reflect the light emitted from the prism, centroids of the prism, the holder portion, and the rotary stage being located on the axis.

A present disclosure relates to a prism apparatus, a camera apparatus and an image display apparatus including same. The prism apparatus according to one embodiment of the present disclosure includes a prism holder for fixing a prism to a first surface; a yoke of which a first surface is attached to a second surface of the prism holder which is rear surface of the first surface of the prism holder; a drive magnet attached to a second surface of the yoke which is rear surface of the first surface of the yoke; a sensor magnet disposed above the yoke; a hall sensor spaced apart from the sensor magnet; and a sensor magnet supporter to which the sensor magnet is attached. Accordingly, the magnetic field is detected accurately.

A light ranging and detection system achieving reconfigurable very wide field of view, high sampling of spatial points per second with high optical power handling by using architecture to efficiently combine different wavelengths, time and frequency coding, and spatial selectivity. The transmitter is capable of generating multiple narrow beams, encoding different beams and transmitting in different spatial directions. The receiver can differentiate and extract range and reflectivity information of reflected beams. Three dimensional imaging of the environment is achieved by scanning the field of view of the transmitter. Control and signal processing electronic circuitries fabricated in a chip are packaged together with a chip containing the photonic components of the ranging system.

An optical system is provided and includes a reflecting unit, a lens unit, an image sensor, and a control module. The image sensor is configured to receive light, and the light is configured to enter the optical system and pass through the reflecting unit and the lens unit to the image sensor. The control module is configured to control a first driving module of the reflecting unit and/or a lens driving mechanism of the lens unit according to reference information to drive the light to move in a first direction and/or a second direction on the image sensor, so as to compensate for the offset displacement of the light on the image sensor when the optical system is shaken.