A spectacle lens has a body containing at least one diffraction structure, which is made to extend in the body on a body surface. The diffraction structure is formed by a spatial modulation of the refractive index n(x, y) dependent on the location in the body surface. The spatial modulation of the refractive index n(x, y) in the body is continuous. The continuity of the spatial modulation of the refractive index n(x, y) in the body typically exists over a contiguous area B of the body surface, for the diameter D of which, defined as the supremum of the metric distance d(x, y) between two arbitrary points x, y arranged in the area of the body surface, with

D:=sup{d(x, y): x, y ∈ B},

the following applies:

D≥1 mm, preferably D≥10 mm, particularly preferably D≥20 mm.

The subject disclosure is directed towards projecting light in a pattern in which the pattern contains components (e.g., spots) having different intensities. The pattern may be based upon a grid of initial points associated with first intensities and points between the initial points with second intensities, and so on. The pattern may be rotated relative to cameras that capture the pattern, with captured images used active depth sensing based upon stereo matching of dots in stereo images.

Systems and methods for stereo matching based upon active illumination using a patch in a non-actively illuminated image to obtain weights that are used in patch similarity determinations in actively illuminated stereo images is provided. To correlate pixels in actively illuminated stereo images, adaptive support weights computations are used to determine similarity of patches corresponding to the pixels. In order to obtain adaptive support weights for the adaptive support weights computations, weights are obtained by processing a non-actively illuminated (clean) image.

An optical device (1), comprising: a first optical transparent thermoplastic layer (2); a second optical transparent thermoplastic layer (3), and; in between both thermoplastic layers (2, 3); a diffractive optical element (4) adjacent to the first thermoplastic layer (2), a spacer (5) in between the diffractive optical element (4) and the second thermoplastic layer (3), and; a border (6) enclosing the diffractive optical element (4) thereby forming a sealed cavity (7); wherein at least an upper part of the border (6), adjacent to the cavity (7) is formed from an adhesive (15).

An ophthalmic device includes at least one ophthalmic lens and at least one diffractive structure for the at least one ophthalmic lens. The ophthalmic lens(es) have at least one base focal length and a base power for a first wavelength of visible light. The diffractive structure(s) have a chromatic aberration such that the diffractive structure(s) have a first power for the first wavelength of visible light and a second power for a second wavelength of visible light. A difference between the first power and the second power is at least two diopters.

According to some embodiments, a Micro Wideband Spectroscopic Analysis Device (MWSAD) is designed to operate from the visible to the far infrared. The MWSAD is the first unified platform to implement nearly all kind of molecular spectroscopy. This design is based on combining/integrating Diffractive Focusing Element (DFE) such as Fresnel lens/Zone plate with wide and finite range tuning devices. The wide range tuning devices are tunable lenses and/or a long stroke linear motor. The finite tuning devices are micro pinhole controlled by MEMS/PZT actuator. The MEMS/PZT actuator is used for finite tuning the micro pinhole location across the chromatic focuses of the Fresnel lens/DFE. The long stroke linear motor is used for wide range tuning the pinhole location across the chromatics focuses. The tunable lens is used for wideband tuning the chromatics focuses locations within the micro pinhole.

Systems and methods for providing optical systems which utilize double Fresnel lenses on curved surfaces for use with display systems, such as silicon-based micro display systems (e.g., OLED micro displays) used with head mounted display (HMD) systems. The optical systems disclosed herein may implement multiplexing or blending to provide a smooth profile transition and reduce aberrations between zones or fields (e.g., small FOV angles, large FOV angles) of a Fresnel surface which is defined by multiple Fresnel patterns or functions. An optical system for a micro display is provided which utilizes double Fresnel lenses on curved surfaces to shorten the focal length while maintaining a good shape factor for moldability and aberration control.

Arrays of integrated analytical devices and their methods for production are provided. The arrays are useful in the analysis of highly multiplexed optical reactions in large numbers at high densities, including biochemical reactions, such as nucleic acid sequencing reactions. The devices allow the highly sensitive discrimination of optical signals using features such as spectra, amplitude, and time resolution, or combinations thereof. The devices include an integrated diffractive beam shaping element that provides for the spatial separation of light emitted from the optical reactions.

The subject disclosure is directed towards active depth sensing based upon moving a projector or projector component to project a moving light pattern into a scene. Via the moving light pattern captured over a set of frames, e.g., by a stereo camera system, and estimating light intensity at sub-pixel locations in each stereo frame, higher resolution depth information at a sub-pixel level may be computed than is captured by the native camera resolution.

There are provided an excellent diffractive optical element having a small amount of flare coloring and unaffected optical performance with a decrease in diffraction efficiency minimized and an optical system and an optical apparatus using the diffractive optical element. A diffractive optical element GD used in an optical system OL of a camera 1, which is an optical apparatus, and including a diffraction grating so that the diffractive optical element GD serves as a lens is so configured that the grating height h0 of the diffraction grating in a central region Ac around an optical axis Z is smaller than the grating height hmax of the diffraction grating in a peripheral region Ap.