In one embodiment, an electronic display assembly includes a first and second microlens layer. The first microlens layer includes a first plurality of cells and the second microlens layer includes a second plurality of cells. Each cell of the first and second plurality of cells includes a transparent lenslet and a plurality of opaque walls configured to prevent light from bleeding into adjacent cells. The electronic display assembly further includes an image sensor layer adjacent to the first microlens layer, and a display layer adjacent to the second microlens array. The electronic display assembly further includes a first Fresnel prism adjacent to the first microlens layer, the first Fresnel prism configured to redirect the incoming light into the first plurality of cells. The electronic display assembly further includes a second Fresnel prism adjacent to the second microlens layer, the second Fresnel prism configured to redirect the emitted light from the second plurality of cells.

The present discloses a device and method for installing and fixing lens. The device for installing and fixing lens includes a lens installation support. A plurality of through holes for placing lenses are provided in the lens installation support, and glue injection holes communicated with the through holes are provided around each through hole in the lens installation support so that when a lens is placed in the through hole, glue will be injected into the glue injection hole, the glue then will permeate around the lens and the through hole to paste the lens in the through hole, and the lens will be installed and fixed once the glue is cured. The device for installing and fixing lens is simple in structure, easy to install and fix the lens with high installation and fixation accuracy and good stability.

Digital camera systems and methods are described that provide a color digital camera with direct luminance detection. The luminance signals are obtained directly from a broadband image sensor channel without interpolation of RGB data. The chrominance signals are obtained from one or more additional image sensor channels comprising red and/or blue color band detection capability. The red and blue signals are directly combined with the luminance image sensor channel signals. The digital camera generates and outputs an image in YCrCb color space by directly combining outputs of the broadband, red and blue sensors.

Influence of chipping in case of dicing a plurality of stacked substrates is reduced. Provided is a semiconductor device where a substrate, in which a groove surrounding a pattern configured with a predetermined circuit or part is formed, is stacked. The present technology can be applied to, for example, a stacked lens structure where through-holes are formed in each substrate and lenses are disposed in inner sides of the through-holes, a camera module where a stacked lens structure and a light-receiving device are incorporated, a solid-state imaging device where a pixel substrate and a control substrate are stacked, and the like.

An exposure device according to an embodiment may include: a holding member provided with a reference surface; an optical system being in contact with the reference surface and slidable in a first direction parallel to the reference surface; and a board including a light emitting element and being fixed to the holding member such that the optical system is sandwiched between the reference surface and the board.

An optical device includes: a substrate including plural waveguide cores; and an optical component provided on the substrate, the optical component including plural lenses, each of the plural lenses transmitting light passing through one of the corresponding plural waveguide cores on the substrate. The substrate and the optical component are each provided with a positioning structure. The positioning structure includes plural protrusions and plural recesses provided on the substrate and the optical component. Each of the plural recesses accommodates a corresponding one of the plural protrusions, and an outer surface of each of the plural protrusions contacts a positioning surface of a corresponding one of the plural recesses. The positioning surface is a part of an inner surface of each of the plural recesses having accommodated the corresponding one of the plural protrusions to position the plural lenses relative to the substrate.

A method for manufacturing a stepped spacer wafer for a wafer-level camera includes a step of measuring a plurality of focal lengths f.sub.1,2, . . . , N of a respective one of a plurality of lenses L.sub.1,2, . . . , N of a lens wafer. The method also includes a step of fabricating a stepped spacer wafer including (i) a plurality of apertures A.sub.1,2, . . . , N therethrough, and (ii) a plurality of thicknesses T.sub.1,2, . . . , N defining a respective thickness of the stepped spacer wafer at least partially surrounding a respective one of the plurality of apertures A.sub.1,2, . . . , N. Each of the plurality of thicknesses T.sub.1,2, . . . , N is equal to a difference between (a) a respective one of the plurality of focal lengths f.sub.1,2, . . . , N, and (b) a uniform thickness that is the same for each of the plurality of thicknesses.

A method of forming an optical system is disclosed. The optical system may include a lens and another optical element. The method may include forming a master tool using a lithographic apparatus, using the master tool to form a substrate comprising a plurality of lenses and associated lens alignment features, dicing the substrate to form individual substrates each having a lens with an integrated lens alignment feature, locating the other optical element in a jig, and placing a lens of the plurality of lenses in the jig such that the integrated alignment feature for said lens rests against surfaces of the jig thereby placing the lens is in a desired position relative to the other optical element.

A plastic barrel including an object-end portion, a holder portion, and a tube portion is proposed. The object-end portion includes an outer object-end surface, an object-end hole, and an inner annular object-end surface. A part of the inner annular object-end surface is connected with the outer object-end surface and surrounding the object-end hole. The holder portion includes a bottom surface, a bottom hole, and an outer bottom side. The bottom surface surrounds the bottom hole and is connected with the outer bottom side. The holder portion further includes cut traces formed by partially removing gate portions. The tube portion includes inner annular surfaces and connects the object-end portion with the holder portion.

The apparatus includes holding components 12a, 12b, 12c, 12d as a holding unit that holds image display sheets 10a, 10b, 10c, 10d detachably in a cylinder-like fashion and thereby configures a barrel unit 11; a pair of closing units 13a, 13b that detachably close openings at both ends of the barrel unit 11; a rotating shaft that removably extends through the inside of the barrel unit 11 from one closing unit 13b to the other closing unit 13a; a support unit 17 that imparts a rotational force to the rotating shaft and includes a driving unit 18 configured to stand upright and to be tilted; and a bearing component 16 that rotatably supports an end of the rotating shaft to enable rotation of the main body of the barrel unit 11.