Methods and systems for generating non-diffracting light sheets for multicolor fluorescence microscopy are disclosed. A method for generating a non-diffracting light patterned Bessel sheet comprises transmitting an input light beam through a Fourier transform lens the input light beam has a spatial intensity pattern at a first plane, and a Fourier plane is formed after the Fourier transform lens to obtain a first light beam; transmitting the first light beam through an annulus mask to obtain a second light beam; and transmitting the second light beam through an excitation objective lens to form a non-diffracting patterned light sheet. A method for generating a non-diffracting light line Bessel sheet comprises transmitting an input light beam at a first lane through an annulus mask to obtain a first light beam; and transmitting the first light beam through an excitation objective lens to form a non-diffracting Bessel light sheet.

A device for generating a laser line on a work plane includes a first laser light source configured to generate a first raw laser beam, a second laser light source configured to generate a second raw laser beam, and an optical arrangement configured to reshape the first raw laser beam to form a first illumination beam with a first caustic and a first beam profile, and reshape the second raw laser beam to form a second illumination beam with a second caustic and a second beam profile. The first illumination beam and the second illumination beam are directed with overlap on the work plane and define a joint illumination direction. The first beam profile and the second beam profile jointly form the laser line on the work plane. The optical arrangement is configured to position the first caustic and the second caustic offset from one another in the illumination direction.

A transmission unit of a LIDAR device. The transmission unit includes at least one beam source for generating electromagnetic beams having a linear or rectangular cross section, and transmission optics. The transmission unit has an optical homogenizer which is arranged in a beam path of the generated beams in front of or behind the transmission optics and has at least one lens array. A LIDAR device is also described.

In the embodiments of the present disclosure, additive manufacturing devices and methods are provided. The additive manufacturing device includes a light source, a building device, and a light scattering member. The light source is configured to provide light to cure photocurable resins. The building device includes a resin tank configured to store the photocurable resins. The building device has a building surface on which the photocurable resins are cured. The light scattering member is arranged between the light source and the building surface. The light scattering member is configured to alter a light propagation direction of the light from the light source to cause an inner-pixel light intensity change on the building surface.

An optical arrangement converts a laser beam into a line-type beam having a line-type beam cross-section that extends along a line direction with a non-vanishing intensity. The arrangement has: reshaping optics having: an input aperture through which the laser beam is radiated in; and an elongate output aperture, the reshaping optics being configured such that the laser beam radiated in is converted into a beam packet with beam segments that emerge through the output aperture; homogenization optics, which contribute to the conversion of the beam packet into the line-type output beam, and by which different beam segments are mixed and superposed along the line direction; and redirection optics configured to redirect the laser beam such that an incidence position/direction of laser beam on the input aperture is changed in dependence on time.

A beam intensity uniformizing element includes an optical base, a first lens array disposed at a front surface of the optical base; and a second lens array disposed at a back surface of the optical base. The first lens array includes first mold lens cells arranged in different directions along the front surface of the optical base. The first mold lens cells have surfaces constituting the front surface of the optical base. The surfaces of the first mold lens cells have first linear marks thereon extending in a first direction. The second lens array includes second mold lens cells arranged in different directions along the back surface of the optical base. The second mold lens cells have surfaces constituting the back surface of the optical base. The surfaces of the second mold lens cells have second linear marks thereon extending in a second direction different from the first direction. This element suppresses generation of an interference pattern and reduces cost.

A laser processing device for forming vias has a galvo mirror module, a first lens, a second lens, a focusing module, and a laser source. The laser source emits a laser beam through the first lens and the second lens to convert the laser beam into an incident ring beam. The galvo mirror module reflects the incident ring beam into a reflected ring beam into the focusing module to convert the reflected ring beam into a Bessel-like beam. The galvo mirror module has a scanning direction and shifts a reflection direction of the reflected ring beam to move an end of the reflected ring beam along the scanning direction. The focusing module has a third lens linearly slid along the scanning direction to reduce variations in shape and laser fluence of the Bessel-like beam focused at different positions.

Provided are a Fourier-beam shaper and a display apparatus including the Fourier-beam shaper. The Fourier-beam shaper includes: a waveguide; an input coupler configured to direct a plurality of light beams toward the waveguide in a time-sequential manner; and a spatial converter configured to output the plurality of light beams traveling in the waveguide through spatially different regions of the spatial converter.

A method of Bessel beam laser processing for forming through glass vias is adapted for processing a glass substrate having a thickness of less than or equal to 1000 micrometers. The glass substrate is processed by a Bessel beam laser to form a pilot through via and is etched to enlarge the pilot through via to form a through glass via having a diameter ranging from 25 micrometers to 200 micrometers. The Bessel beam laser has a pulse width ranging from 10 picoseconds to 20 picoseconds and is converted as a Bessel beam passing through the glass substrate to form the pilot through via. The through glass via with a smooth interior surface is formed.

A light source device includes a light source device includes a first light source configured to emit first light, and a first lens that includes a first surface on which the first light having a first optical axis is incident and a second surface from which a second light having a second optical axis is emitted. An intensity of the first light has a first value on the first optical axis of the first light.