Methods, devices, and systems for processing information are disclosed. An example device may comprise a metastructure comprising a plurality of physical features configured to transform an analog signal according to a kernel of an integral equation. The device may comprise one or more waveguides coupled to the metastructure and configured to recursively supply a transformed analog output signal of the metastructure to an input of the metastructure to iteratively cause one or more transformed analog signals output from the metastructure to converge to an analog signal representing a solution to the integral equation.

A meta optical device is provided. The meta optical device includes an array of meta structures. Each of the meta structures includes a plurality of stacked layers at least including a first layer with a first refractive index and a second layer with a second refractive index. The first refractive index and the second refractive index are different.

A meta-optical device and a method of manufacturing a metasurface are provided. The meta-optical device includes a substrate and a nanostructure, wherein the nanostructure includes a first portion and a second portion that differ in at least one of a diameter and a period, wherein a ratio of an etch depth of the second portion to an etch depth of the first portion is about 0.9 to about 1.1, and the nanostructure includes at least one of sulfur, fluorine, and fluorocarbon.

Embodiments described herein provide for devices and methods for retaining optical devices. The devices and methods described herein provide for retention of the substrate without contacting sensitive portions of the substrate. The devices and methods utilize retention pads or vacuum pins to contact the exclusion zones i.e., inactive areas of the substrate to retain the substrate and prevent the substrate from moving laterally. Additionally, a holding force retains the substrate in the vertical direction, without contacting the substrate. The methods provide for adjusting the devices to account for multiple geometries of the substrate. The methods further provide for adjusting the devices, such as adjusting a gap between the optical device and a suction pad, to alter the holding force of the devices on the optical devices.

A metalens (wavefront control element) according to the present disclosure is a wavefront control element that controls a wavefront of incident light, and includes a plurality of metasurface regions. The plurality of metasurface regions are arranged in an array.

A device includes an array of light sources configured to emit light beams, and a metasurface including a plurality of nanostructures and configured to receive and deflect the light beams emitted by the array of light sources. The metasurface includes a plurality of regions. Nanostructures in different regions of the plurality of regions are configured to deflect center light rays (with peak intensity) of the light beams into different directions towards a target, such as display optics of a near-eye display. In some embodiments, nanostructures in each region of the plurality of regions are configured to deflect center light rays of light beams of two or more different colors into a same direction or similar directions towards the target.

A see-through type display apparatus includes an image projector configured to output image light, a waveguide configured to receive the image light output from the image projector and transmit the image light to a user's view, and a first lens having a negative refractive power and a second lens having a positive refractive power, which are arranged on both surfaces of the waveguide. Each of the first lens and the second lens includes one or more meta lenses and is configured to operate as a lens with almost no chromatic aberration, thereby implementing a thin optical system having good image quality.

The invention relates to an on-chip optical waveguide comprising an input or output facet, the facet comprising an array of unit-cells; each unit cell is a recess that gradually narrows in the direction from the outer of the waveguide towards the interior of the waveguide.

An optoelectronic sensor in accordance with the principle of triangulation for detecting an object in a monitored zone is provided that has a light transmitter and a transmission optics associated with the light transmitter in a transmission path for transmitting a light beam, and a spatially resolving light receiver and a reception optics associated with the light receiver in a reception path for receiving the light beam remitted by the object, as well as a control and evaluation unit that is configured to evaluate a received signal of the light receiver. The sensor furthermore has an optical metaelement having a metasurface and/or a metamaterial in the reception path.

A meta-optical device for light beam combining is provided to include a substrate and a meta-optical array that is formed on the substrate and that is disposed to receive N number of col-mated light beams. The meta-optical array includes a plurality of nanostructures that are made in such a way that the N number of collimated light beams are deflected to travel in a predetermined direction.