A method includes forming sacrificial blocks on a substrate, reflowing the sacrificial blocks, performing a first etching process to etch both of the sacrificial blocks and the substrate until parts of the substrate that are etched to form micro lenses, forming a patterned etching mask, and performing a second etching process to etch the substrate. At a time after both of the first etching process and the second etching process have been performed, the micro lenses are in recesses of the substrate.

In accordance with various embodiments of the present disclosure, an assembly of a plurality of optical modules is provided. In some embodiments, the assembly comprises a base layer, and cover layer, and a wall layer. The base layer comprises one circuit board laminated substrate having a plurality of optical components mounted thereon. The cover layer comprises one circuit board laminated substrate having a plurality of apertures defined therein. Each of the plurality of apertures correspond to a respective one of the plurality of optical modules and align with a respective one of the plurality of optical components. The wall layer is coupled to the base layer and to the cover layer and forms a plurality of external walls. The base layer, the cover layer, and the wall layer together define a plurality of chambers, each corresponding to a respective one of the optical modules.

Disclosed is a method implemented by a computer for determining surfacing data to obtain a surface of a lens element, the surface of the lens element including: a refraction area having a first curvature; and multiple optical elements placed on at least part of the finished optical surface, each optical element having at least a second curvature.

A stacked lens includes: a first optical device; a second optical device disposed on an optical axis of the first optical device; and an adhesive layer bonding the first optical device and the second optical device and including a projection projecting outside a side surface of the first optical device and a side surface of the second optical device.

A method includes forming sacrificial blocks on a substrate, reflowing the sacrificial blocks, performing a first etching process to etch both of the sacrificial blocks and the substrate until parts of the substrate that are etched to form micro lenses, forming a patterned etching mask, and performing a second etching process to etch the substrate. At a time after both of the first etching process and the second etching process have been performed, the micro lenses are in recesses of the substrate.

A method for fabricating a microlens array includes: step S1, providing a first substrate, and forming a patterned mask layer on the first substrate; step S2, etching the first substrate to form spaced grooves; step S3, removing the patterned mask layer; step S4, attaching a photoresist layer to the upper surface of the first substrate; step S5, softening the photoresist layer so that it adheres to the inner wall of the groove to form a concave smooth surface; step S6, solidifying the photoresist layer to form a working mold; applying an adhesive material and the working mold through the second substrate. The microlens array is produced by pressing the mold together or injecting PDMS material into the surface of the working mold.

The present invention provides an optical device and a method of fabricating the same. A first dielectric layer is formed on a substrate structure and then patterned and partially removed, forming openings therein, which define at least one first dielectric sub-layer in the first dielectric layer. The first dielectric sub-layer is rounded into a microlens. In this way, the microlens can be fabricated in a chip fabrication plant, without needing to deliver an associated chip to a dedicated microlens fabrication plant, thereby improving production efficiency and shortening the manufacturing cycle. The microlens can be fabricated in the optical device using a semiconductor process and thus exhibits increased density and uniformity, resulting in higher optical efficiency.

The invention relates to a lenticular device comprising a profiled surface which extends in an x-direction and in an y-direction; and has a profiling in a z-direction perpendicular to the profiled surface. The profiled surface defines an array of elongate lenticular elements have lenticular surfaces that intersect with one another along an intersection line. At least one intersection line in the lenticular device is a curved intersection line comprising one or more curved segments that are curved in the x-direction and/or in the z-direction. A lenticular lens with such curved lines reduces moire patterns when positioned on an array of display pixel elements in an autostereoscopic display device. The invention therefore also relates to an autostereoscopic display device comprising such lenticular device and an array of display pixel elements.

A security feature on a personalized plastic identification document such as a personalized plastic card and a plastic page of passport. The security feature includes a lens structure with a plurality of lenses, where the lens structure is formed using a laser at a location on the personalized plastic identification document to facilitate viewing of a security feature underlying the lens structure.