Hoya Corporation

Ken-ichi Shinde

Hiroshi Kojima

Hiroshi Ohta

Hiroshi Ota

Takeshi Mitsuishi

Hitoshi Kamura

Yukihiro Takahashi

Yoshitaka Kitahara

Terufumi Hamamoto

Masanori Kadota

Takeshi Imizu

A process for producing a thin film and an optical member which are free from discoloration of a lens and exhibit a good antistatic property and a good water repellency. The thin film is formed by a vacuum deposition of a water repellent solution which contains (a) a water repellent having a perfluoroalkyl group, (b) a mixture of a silane coupling agent, a modified silicone oil introduced with an organic group into its side chain and/or both terminal ends, and a perfluoroether compound, and (c) at least one conductive substance selected from the group consisting of fullerenes, carbon nanotubes and graphite compounds.

Processes for producing thin films and optical members

The present invention provides an optical member having a plastic substrate and a multilayered antireflection film formed by vapor deposition, wherein at least one layer in the antireflection film is a hybrid layer formed of at least one inorganic substance selected from silicon dioxide, aluminum oxide, titanium oxide, zirconium oxide, tantalum oxide, yttrium oxide, and niobium oxide and an organosilicon compound that is a liquid at normal temperature and at atmospheric pressure and/or an organic compound not containing silicon that is a liquid at normal temperature and at atmospheric pressure as vapor deposition raw materials.

Optical element having antireflection film

An optical member and process for making it including an optical substrate, a multilayered antireflection film provided on the optical substrate, and a water-repellent layer provided on an outermost layer of the multilayered antireflection film, wherein the outermost layer of the multilayered antireflection film is a layer containing, as a major component, silicon dioxide; and the water-repellent layer includes a first layer containing, as major components, a fluorine-substituted alkyl group-containing organosilicon compound and a silicon-free perfluoropolyether and a second layer provided on the first layer and which is in direct contact therewith, which contains, as a major component, a silicon-free perfluoropolyether.

Optical member

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Tokyo, Japan

Ken-ichi Shinde