R, G, B laser beams emitted from an R_LD, a G_LD, and a B_LD, respectively, are divided, through demultiplexers, into respective monitoring laser beams and respective irradiation laser beams to be applied to a scanning type endoscope side. R, G, B drive currents for causing light emission at the R_LD, the G_LD, and the B_LD are controlled such that the light quantities of the divided monitoring laser beams become equal to monitoring light quantity values on which the division ratios in the case of temperature change are reflected. As a result of this control, the light quantities of the irradiation laser beams each fall within a range satisfying a predetermined condition.

Aspects of the disclosure are related to a Lidar device, comprising: a vibrating fiber optic cantilever system on a transmit (TX) path; and a two-dimensional (2D) light sensor array on a receive (RX) path.

An apparatus is presented for refractive beam steering in a LIDAR system. The apparatus includes a first scanner that receives a beam transmitted along an optical axis and projects the beam as a plurality of scan lines in a first plane between a first angle and a second angle, wherein the first angle and the second angle are defined with respect to the optical axis; a motor that is coupled to the first scanner; one or more processors that are configured to generate rotation information based on one or more components of a particular waveform and transmit a signal to the motor, the signal causing the motor to rotate the first scanner based on the rotation information.

Described are optical fibers and scanning fiber displays comprising optical fibers. The disclosed optical fibers include a plurality of mass adjustment regions, such as gas-filled regions, positioned between a central waveguiding element and an outer periphery for reducing a mass of the optical fiber as compared to an optical fiber lacking the plurality of mass adjustment regions.

An optical device may include an optical fiber having a fixed end and a free end; a first actuator positioned at a actuator position between the fixed end and the free end and configured to apply a first force on the actuator position of the optical fiber such that a movement of the free end of the optical fiber in a first direction is caused, wherein the first direction is orthogonal to a longitudinal axis of the optical fiber; and a deformable rod disposed adjacent to the optical fiber, and having a first end and a second end, wherein the first end is connected to a first rod position of the optical fiber and the second end is connected to a second rod position of the optical fiber.

A high-power laser beam with an arbitrary intensity profile is produced. Such beam has a variety of uses including for laser materials processing such as powder bed fusion additive manufacturing. Several challenges in additive manufacturing are mitigated with the present non-uniform intensity laser profiles. Nonuniform shapes include a set of intensity pixels in a line that could print a wide stripe area instead of just a single line. One example uses the multimode interference pattern from the output of a ribbon fiber which is imaged onto a work piece. The interference pattern is controlled to allow turning on or off of pixels along a line which can be used to shape the beam and form the additively manufactured part.

A projector including a cantilever position detection system includes a chassis and an actuator mounted to the chassis. The projector also includes a cantilever light source having a longitudinal axis and mechanically coupled to the actuator. The cantilever light source is operable to transmit display light and characterization light. The projector further includes an optical assembly section operable to receive the display light and the characterization light. The optical assembly section includes a dichroic mirror operable to reflect at least a portion of the display light and transmit at least a portion of the characterization light. Moreover, the projector includes a position measurement device operable to receive the transmitted portion of the characterization light.

A laser scanning method including emitting a pulsed laser beam from a distal end of an optical fiber in a liquid medium during a first period, the pulsed laser beam being emitted for generating a bubble at the distal end, stopping emission of the pulsed laser beam from the distal end during a second period, wherein the first period is a period for moving the optical fiber closer toward an operation member disposed parallel to the optical fiber by utilizing contraction of the bubble that comes into contact with or close to the operation member, and wherein the second period is a period for moving the optical fiber away from the operation member.

A laser scanning method that is a method for scanning a laser beam emitted from a distal end of an optical fiber in a liquid medium. The laser scanning method includes emission of a pulsed laser beam from the distal end in the medium, wherein the emission of the pulsed laser beam includes: generating a bubble that is to come into contact with the distal end and an operation member by means of the laser beam emitted from the distal end, the operation member being disposed only at one side of the distal end in a radial direction of the optical fiber; and contracting the bubble by stopping the emission of the laser beam from the distal end.

A display subsystem for a virtual image generation system comprises a planar waveguide apparatus, an optical fiber, at least one light source configured for emitting light from a distal end of the optical fiber, and a mechanical drive assembly to which the optical fiber is mounted as a fixed-free flexible cantilever. The drive assembly is configured for displacing a distal end of the optical fiber about a fulcrum in accordance with a scan pattern, such that the emitted light diverges from a longitudinal axis coincident with the fulcrum. The display subsystem further comprises an optical modulation apparatus configured for converging the light from the optical fiber towards the longitudinal axis, and an optical waveguide input apparatus configured for directing the light from the optical modulation apparatus down the planar waveguide apparatus, such that the planar waveguide apparatus displays one or more image frames to an end user.