A system for imaging at least one source of radiation with a mask and a plurality of detectors. The mask is characterized by a base pattern and configured to selectively transmit or block the radiation striking the mask based in part on the base pattern. The mask includes a plurality of tiles each repeating the base pattern. The number of the detectors is N and each of the tiles is divided into N respective portions. The plurality of detectors is positioned in a spaced apart configuration such that each of the plurality of detectors captures the radiation passing through different ones of the N respective portions of the plurality of tiles. The different ones of the N respective portions combine to form the base pattern.

A method of obtaining depth information and a display apparatus may adjust a sensor area of a sensor panel based on a distance from an object, and may obtain depth information of the object based on the adjusted sensor area.

A bijective coded aperture system uses mirror system with a multitude of reflector elements attached to an absorbing, such as black, substrate. Each of the reflector elements is independently placed at a different angle with respect to each other in such a manner that the image of the scene is replicated several times at the focal plane and on the image sensor. Moreover, these replicated images may be overlapping. An image processor can then execute reconstruction methods of the image to faithfully represent the scene.

Apparatus and associated methods relate to forming images for a terminal-imaging seeker using software defined optics. An optically-neutral lens with a ballistic-ogive-shaped front surface receives light from a scene aligned along an optical axis. The optically-neutral lens transmits the light received at the ballistic-ogive-shaped front surface to a planar rear surface, which is then transmitted to a coded-aperture plate aligned with the optical axis. The coded-aperture plate includes a plurality of pinhole-like apertures, each of which is configured to perform pinhole-like lensing of the scene. The plurality of pinhole-like apertures form a multiplex of overlapping images on a focal plane array aligned with the optical axis. An image processor reconstructs, based on a configuration of the plurality of pinhole-like apertures and the multiplex of overlapping images, a single image of the scene.

In one embodiment, a camera includes an image sensor within a camera housing that converts light entering the camera housing through an optical filter into digital image data. The optical filter can have a variable opacity. A processor in communication with the image sensor identifies operation settings for the optical filter and adjusts an opacity level of the optical filter over an exposure period in accordance with the operation settings for the optical filter. In addition, the processor modifies values of the digital image data based at least on the operation settings for the optical filter.

A sensing device projects near-field spatial modulations onto a closely spaced photodetector array. Due to physical properties of the grating, the point-spread response distributes spatial modulations over a relatively large area on the array. The spatial modulations are captured by the array, and photographs and other image information can be extracted from the resultant data. An image-change detector incorporating such a sensing device uses very little power because only a small number of active pixels are required to cover a visual field.

A method for increasing the pixel count delivered from a plurality of light detectors when scanning an object that includes positioning a mask, having a plurality of two dimensional Walsh-Hadamard filter patterns, in front of a plurality of light detectors to control the passage of light through the mask filter patterns to the light detectors. The method also includes positioning a lens assembly in front of the mask to project an image through the mask filter patterns on to the plurality of light detectors. The method also includes moving the mask, plurality of light detectors, or the image in a plane defined by a planar surface of the plurality of light detectors. The method also includes measuring the filtered image projected through the mask with the plurality of light detectors.

An imaging module has a spatial light modulation element which applies spatial modulation to an incident luminous flux and emits it; an image sensor which obtains the luminous flux to which the spatial modulation has been applied by the spatial light modulation element as image information; and a fixing part which integrally fixes the spatial light modulation element and the image sensor, and the fixing part has a gap-defining member which is arranged between the spatial light modulation element and the image sensor and forms a gap structure having a certain distance, and an imaging device includes the imaging module.

Disclosed is a metrology apparatus and method for measuring a structure formed on a substrate by a lithographic process. The metrology apparatus comprises an illumination system operable to provide measurement radiation comprising a plurality of wavelengths; and a hyperspectral imager operable to obtain a hyperspectral representation of a measurement scene comprising the structure, or a part thereof, from scattered measurement radiation subsequent to the measurement radiation being scattered by the structure.

An intraocular medication delivery system includes: (a) a substrate implantable in an eye; (b) at least one reservoir of medication coupled to the substrate; and (c) a control system coupled to the substrate and including at least one controller operable to control release of the medication from the reservoir to provide the medication to the eye.