Aspects of the present disclosure include systems, methods, and devices use a controllable matrix filter to selectively obscure regions of an image sensor's field of view. The controllable matrix filter is a physical component that may be placed in front of an image sensor and, in certain situations, one or more regions of the otherwise transparent matrix filter may be selectively configured to have an increased optical density such that the one or more regions become opaque thereby blocking out certain regions of the image sensor's field of view. In this way, the controllable matrix filter may be used to mask out certain regions in an image sensor's field of view that may present processing difficulties for downstream systems that utilize information from the image sensor.

Disclosed is a method to fabricate a multifunctional collimator structure In one embodiment, an optical collimator, includes: a dielectric layer; a substrate; and a plurality of via holes, wherein the dielectric layer is formed over the substrate, wherein the plurality of via holes are configured as an array along a lateral direction of a first surface of the dielectric layer, wherein each of the plurality of via holes extends through the dielectric layer and the substrate from the first surface of the dielectric layer to a second surface of the substrate in a vertical direction, wherein the substrate has a bulk impurity doping concentration equal to or greater than 1×10.sup.19 per cubic centimeter (cm.sup.−3) and a first thickness, and wherein the bulk impurity doping concentration and the first thickness of the substrate are configured so as to allow the optical collimator to filter light in a range of wavelengths.

A projection screen and a projection system are provided. The projection screen includes a microlens array layer, a filter layer, and an optical structure layer arranged sequentially from an incident side of a projection light. The microlens array layer includes microlens units. The filter layer has a predetermined transmittance and is provided with a light-transmissive hole. The optical structure layer includes an optical microstructure unit capable of reflecting the incident light. The light-transmissive hole in the filter layer is arranged on the basis of an optical axis of the microlens unit in the microlens array layer so that the light-transmissive hole is exactly located on a focal plane of the microlens unit, and the projection light is reflected by the microlens unit, and then exactly passes through the light-transmissive hole. The projection screen has a high screen gain.

Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focus corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

The present technology relates to a solid-state image capturing apparatus and an electronic device that can acquire a normal image and a narrow band image at the same time. The solid-state image capturing apparatus includes a plurality of substrates laminated in two or more layers, and two or more substrates of the plurality of substrates have pixels that perform photoelectric conversion. At least one substrate of the substrates having the pixels is a visible light sensor that receives visible light, and at least another substrate of the substrates having the pixels is a narrow band light sensor that includes narrow band filters being optical filters permeating light in a narrow wavelength band, and receives narrow band light in the narrow band.

Devices and methods for protecting electro-optical instruments includes a transparent substrate and a conductive film layer on the substrate. The film layer may be perforated with an array of holes and may be configured to attenuate RF/microwave electromagnetic radiation. The devices may include a plurality of optical waveguides having a first end and a second end, wherein the first end of each optical waveguide is disposed over the substrate and passes through a respective hole of the array of holes such that each hole includes at least one optical waveguide. The waveguide may be configured to capture incident light from the second end and guide the incident light to the first end through the hole.

Devices and methods for protecting electro-optical instruments includes a transparent substrate and a conductive film layer on the substrate. The film layer may be perforated with an array of holes and may be configured to attenuate RF/microwave electromagnetic radiation. The devices may include a plurality of optical waveguides having a first end and a second end, wherein the first end of each optical waveguide is disposed over the substrate and passes through a respective hole of the array of holes such that each hole includes at least one optical waveguide. The waveguide may be configured to capture incident light from the second end and guide the incident light to the first end through the hole.

Systems and methods for hyperspectral and multispectral imaging are disclosed. A system includes a lens and an imaging device having a plurality of pixel sensors. A focus corrector is located within the optical path to refract at least a portion of the incoming light and change the focusing distance of specific wavelengths of light to converge at a focal plane. The focal corrector is selected based upon the imaging system to reduce an overall measure of deviation between a focal length curve for the lens and a focus position curve for pixel sensors to produce focused imaging data for a broad spectrum of light, including beyond the visible range.

Various embodiments are described herein for an ocular device implantable in a user's eye and which has an adjustable optical element for varying one or more optical properties for the eye such as, but not limited to, providing a dynamically adjustable aperture stop to control the amount of incoming light, filtering incoming light, polarizing incoming light, and/or varying a depth of field for the eye.

A tunable notch filter for operation in reflection mode comprises an antenna layer positioned on a transmissive substrate and a mirror layer positioned on a support substrate. The antenna layer and the mirror layer are positioned on opposite sides of a gap and facing each other, the gap having a gap distance. The notch filter is tuned by adjusting the gap distance between the antenna layer and the mirror layer. Tuning the notch filter to a selected state can cause the filter to selectively attenuate the reflection of at least some electromagnetic radiation that is incident on the transmissive substrate and enters the notch filter.