G02B27/0911

Wireless power transmission device and method
10992186 · 2021-04-27 · ·

The present specification discloses a wireless power transmission device and method thereof. Here, the wireless power transmission device according to an embodiment of the present invention includes: a laser light source unit; a light output unit which emits laser light generated from the laser light source to a light receiving unit of the wireless power receiving device; and a control unit which controls shaping of the emitted light according to the angle of arrival with the light receiving unit so that an overfill loss is less than a predetermined threshold value. Here, the control unit detects the point at which the power conversion efficiency of the light receiving unit is highest, and sets and controls the power density value of the emitted light at the detected point.

Anamorphic refractive objective lens assembly

Aspects and embodiments are generally directed to compact anamorphic refractive objective lens assemblies. In one example, a refractive objective lens assembly includes a passively athermal anamorphic lens group including at least a first cylindrical lens having a surface optically powered in a first dimension, the first anamorphic lens group positioned to receive thermal infrared radiation, a focus cell positioned to receive the radiation from the anamorphic lens group, the focus cell including a first group of lenses each having a rotationally symmetric surface optically powered in the first dimension and a second dimension orthogonal to the first dimension, a relay lens group positioned receive the radiation from the focus cell, the relay lens group including a second group of lenses each having a rotationally symmetric surface optically powered in both the first and second dimensions, and a dewar assembly including a cold stop and an optical detector.

Device for generating a linear intensity distribution in a working plane

Device for generating a linear intensity distribution in a working plane (20), comprising at least one laser light source (11), optics (14) which shape the light (12) emitted by the at least one laser light source (11) in a first direction (X) and/or in a second direction (Y), a beam transformation device (13) increasing the beam quality factor (M.sub.x.sup.2) with respect to the first direction (X) and decreasing the beam quality factor (M.sub.y.sup.2) with respect to the second direction (Y), as well as an objective (17) acting in the second direction (Y) and a focusing device (18) acting in the second direction (Y), which is arranged behind the objective (17), wherein the objective (17) and the focusing device (18) image into the working plane (20) a plane (19) behind the beam transformation device (13) in which the light (12) in the second direction (Y) has an intensity distribution with a super-Gaussian profile or with a profile similar to a super-Gaussian profile.

Device for Converting electromagnetic Radiation into Electricity, and Related Systems and Methods

A device for converting electromagnetic radiation into electricity comprises an expander that includes a conical shape having an axis and a curved surface that is configured to reflect electromagnetic radiation away from the axis to expand a beam of the electromagnetic radiation; and one or more energy conversion components configured to receive a beam of electromagnetic radiation expanded by the expander, and to generate electricity from the expanded beam of electromagnetic radiation. With the expander's curved surface, a beam of electromagnetic radiation that is highly concentratedhas a large radiation fluxmay be converted into a beam that has a larger cross-sectional area. Moreover, one can configure, if desired, the curved surface to provide a substantially uniform distribution of radiation across the expanded cross-sectional area. With such an expanded beam the one or more energy conversion components can efficiently convert some of the electromagnetic radiation into electricity.

Light illumination device, light processing apparatus using light illumination device, light illumination method, and light processing method
10942357 · 2021-03-09 · ·

A light illumination device, a light processing apparatus using the light illumination device, a light illumination method, and a light processing method. The light illumination device, the light illumination method, and the light processing method include converting a phase distribution of a transmitted wavefront of light emitted from a light source, changing a ratio between a first diameter of a cross section perpendicular to an optical axis of the light whose phase distribution of the transmitted wavefront is converted in the converting along a first axis and a second diameter along a second axis perpendicular to the first axis and the optical axis of the light, and condensing the light whose ratio between the first diameter and the second diameter is changed in the changing.

Ultra-compact optical pulse compressor
10916907 · 2021-02-09 · ·

A uni-block optical pulse compressor which acts to manipulate an input beam with a train of pulses in such a way that the pulses returned after a round-trip though the uni-block compressor are temporally compressed as described. The device is comprised of two optically transparent dielectric blocks whose indices of refraction are larger than the ambient, and provides a compact, portable and robust means for temporally compressing long duration pulses.

AUTOMATED GENERATION OF ANAMORPHIC IMAGES FOR CATOPTRIC ANAMORPHOSIS
20210090213 · 2021-03-25 ·

Enhanced methods and systems for the automatic generation and rendering of anamorphic (e.g., curved, distorted, deformed, and/or warped) images are described. When viewed via a reflection from a non-planar (e.g., curved) surface, the automatically generated and rendered anamorphic images are perceived as being relatively non-distorted, deformed, and/or warped. The anamorphic images may be utilized for catoptric anamorphis, e.g., projective, mirrored and/or reflective anamorphic displays of images. Various artworks may employ the automatically generated anamorphic image, and the curved reflective surface to generate a relatively undistorted reflected image of the anamorphic image.

IRRADIATION OPTICAL SYSTEM, LIGHT IRRADIATION DEVICE, AND THREE-DIMENSIONAL FABRICATING APPARATUS
20210041677 · 2021-02-11 ·

An irradiation optical system includes a light source unit and an irradiation unit. The irradiation unit is configured to condense light from the light source unit onto an irradiated surface to irradiate the irradiated surface with the light. In the irradiation unit, a direction of an optical axis is a Z direction, two directions orthogonal to the optical axis and orthogonal to each other are an X direction and a Y direction, and a positive power in the X direction is set to be smaller than a positive power in the Y direction such that a condensing spot on an X-Y plane at a position where the light from the light source unit is condensed has an elliptical shape having the X direction as a major axis.

Production method of pseudo freeform lenses for PSP systems
11061241 · 2021-07-13 ·

A method of producing freeform lenses for a PSP laser line system having a laser line diode and a set of three freeform lenses aligned along an optical alignment axis, the set of freeform lenses configured to yield a resultant laser line, the method including: (a) calculating lens surfaces for a lens form to fabricate a lens of the lens set therefrom; (b) fabricating a plurality of slices of the lens form, the plurality of slices distributed over a width SW of the lens, wherein each the slices has a width dimension SL; (c) aligning and constraining together the plurality of slices to fabricate the lens form, and molding a lens using the fabricated lens form; (d) repeating steps (a) to (c) to produce all three lenses of the set of lenses; and (e) integrating the produced lens set into the laser line system; the resultant laser line having a length L and a width W and a power uniformity evaluated along L.

APPARATUS FOR PROJECTING LINEAR LASER BEAMS
20210210923 · 2021-07-08 ·

In one embodiment, described herein is an apparatus for projecting linear illumination fanned out along the slow axis of a laser source array. In addition to the laser source array, the apparatus can include a number of fast axis collimators (FACs) to collimate the laser beams from the laser source array along the fast axis, a cylinder lens array for converting the collimated laser beams to parallel laser beams, and a prism array pair for reducing the pitch of the parallel laser beams. The system further includes a first cylinder lens for focusing the laser beams from the prism array pair onto a MEMS mirror, which redirects the laser beams as a linear laser beam towards a predetermined direction.