摘要:
Microlenses and microlens arrays according to the invention are based on Group III-nitride materials. As used herein, “Group III” represent the elements in the Periodic Classification of Elements Charts that includes Boron (B), Aluminium (A1), Galium (Ga), Indium (In), and Thallium (T1), and alloys. In certain embodiments, the microlenses are durable in challenging environments such as higher temperatures and exposure to chemicals and/or radiation. In one aspect, the invention provides microlenses made from Group III-nitride materials. The microlenses and arrays thereof are transmissive to electromagnetic radiation, particularly in the green through ultra-violet light spectrum. In another aspect, an embodiment of the invention includes a system having an opto-electric device and a microlens made from Group III-nitride material. Another aspect of the invention is a method of making microlenses from Group III-nitride materials.
摘要:
Composite materials containing nanoscalar particles are produced by causing a) a compound soluble in the solvent of a metal of group 6 to 15 of the periodic system or the lanthanides to react in an organic solvent with b) a precipitated reagent to form antimonides, arsenides, chalcides, halides or phosphides of the metal compound a), in the presence of c) a bifunctional compound which has at least one electron pair donor group and at least one group transferable by polymerisation or polycondensation into an organic or inorganic network, the stabilised sol of nanoscalar particles is mixed with d) a compound which can be thermally or photochemically cured or polymerised to form a polymer and e) a polymerisation initiator, the groups present which can be converted into an inorganic network are hydrolysed and polycondensed and the material is thermally or photochemically cured. The nanocomposites of the invention are especially suitable for optical components.
摘要:
The present invention provides a method to fabricate an optical coupler comprising the steps of: preparing a photosensitive glass substrate comprising at least silica, lithium oxide, aluminum oxide, and cerium oxide; masking a halftone design with variation in optical density to delineate an optical element in the glass; exposing the photosensitive glass substrate to an activating energy source; exposing the photosensitive glass substrate to a heating phase of at least ten minutes above its glass transition temperature; cooling the photosensitive glass substrate to transform at least part of the exposed glass to a crystalline material to form a glass-crystalline substrate; and etching the glass-crystalline substrate with an etchant solution to form the one or more optical elements.