Patent application number | Description | Published |
20080198457 | DUST-PROOF, REFLECTING MIRROR AND OPTICAL APPARATUS COMPRISING SAME - A dust-proof, reflecting mirror comprising a reflecting mirror substrate, a dust-proof coating having fine surface roughness, which is formed on a reflecting surface of the reflecting mirror substrate, and an outermost water-repellent or water/oil-repellent coating. | 08-21-2008 |
20090009857 | OPTICAL LOW-PASS FILTER AND IMAGING APPARATUS HAVING SAME - An optical low-pass filter is disposed on a light-receiving surface of an imaging device. The filter has a light-transmitting substrate including at least one birefringent plate and an infrared-cut plate , a dust-proofing layer provided on a light-input surface of the light-transmitting substrate, and an infrared-cut coat layer provided between the dust-proofing layer and the light-transmitting substrate or on a light-output surface of the light-transmitting substrate. A surface of the dust-proofing layer contains fine roughness. | 01-08-2009 |
20090010636 | FINDER OPTICAL SYSTEM AND SINGLE-LENS REFLEX CAMERA HAVING SAME - The finder optical system has a reflex mirror, a focal plane plate, a prism, an eyepiece, and a dust-proofing multilayer. The reflex mirror is disposed on an optical path of a photographing optical system. The focal plane plate is disposed at a position on which an image is formed by a light which passes through the photographing optical system and which is reflected by the reflex mirror. The light-input surface of the prism races a light-output surface of the focal plane plate. The eyepiece faces a light-output surface of the prism. The dust-proofing multilayer, which is provided on a surface of the focal plane plate, has a water-repellent or water- and oil-repellent layer and an anti-static layer. | 01-08-2009 |
20090011243 | METHOD FOR MANUFACTURING A DUST-PROOFING AND LIGHT-TRANSMITTING MEMBER, AND A DUST-PROOFING AND LIGHT-TRANSMITTING MEMBER, LOW-PASS FILTER, IMAGING DEVICE PROTECTOR, AND IMAGING APPARATUS - A method for manufacturing a dust-proofing and light-transmitting member comprising the steps of forming a deposited coating and forming a dust-proofing coating is provided. The dust-proofing and light-transmitting member is arranged on a side of a light-receiving surface of an imaging device. The deposited coating is formed on a light-incident surface of a light-transmitting substrate. The deposited coating comprises aluminum, alumina, or a mixture of aluminum and alumina. The dust-proofing coating having fine roughness is formed on a surface by carrying out a hot water process for the deposited coating. Water warmed to between 40 and 100 degrees Celsius or a mixture of water and organic solvent is used in the hot water process. | 01-08-2009 |
20090168184 | ANTI-REFLECTION COATING, OPTICAL MEMBER, EXCHANGE LENS UNIT AND IMAGING DEVICE - An anti-reflection coating comprising first to seventh layers formed on a substrate in this order, the first layer being an alumina-based layer, the seventh layer being a porous, silica-based layer, and each of the first to seventh layers having predetermined refractive index and optical thickness in a wavelength range of 400-700 nm. | 07-02-2009 |
20090219620 | ANTI-REFLECTION COATING, OPTICAL MEMBER, EXCHANGE LENS UNIT AND IMAGING DEVICE - An anti-reflection coating comprising first to seventh layers formed on a substrate in this order, the first layer being an alumina-based layer, the seventh layer being a porous, silica-based layer, and each of the first to seventh layers having predetermined refractive index and optical thickness in a wavelength range of 400-700 nm. | 09-03-2009 |
20090220774 | ANTI-REFLECTION COATING AND ITS PRODUCTION METHOD - An anti-reflection coating comprising a mesoporous silica coating composed of mesoporous silica nano-particles formed on a substrate or a dense coating formed on the substrate, the mesoporous silica coating having a refractive index of more than 1.10 and 1.35 or less. | 09-03-2009 |
20090244709 | METHOD FOR FORMING ANTI-REFLECTION COATING AND OPTICAL ELEMENT - A method for forming an anti-reflection coating of alkali-treated silica aerogel on a substrate, comprising the steps of hydrolyzing and polymerizing alkoxysilane in the presence of a base catalyst to prepare an alkaline sol, adding an acid catalyst to the alkaline sol to carry out further hydrolysis and polymerization to prepare a first acidic sol, hydrolyzing and polymerizing alkoxysilane in the presence of an acid catalyst to prepare a second acidic sol, mixing the first and second acidic sols, applying the resultant mixed sol to the substrate, drying it, and treating the resultant silica aerogel coating with an alkali. | 10-01-2009 |
20100027123 | ANTI-REFLECTION COATING, OPTICAL MEMBER COMPRISING IT, AND EXCHANGE LENS UNIT AND IMAGING DEVICE COMPRISING SUCH OPTICAL MEMBER - An anti-reflection coating laminated on a substrate, wherein in a wavelength range of 400-700 nm, the substrate has a refractive index of 1.45-1.72, the first layer is based on alumina, the second to sixth layers are dense layers having refractive indices of 1.95-2.23, 1.33-1.50, 2.04-2.24, 1.33-1.50 and 1.85-2.40, respectively, the seventh layer is composed of nanometer-sized, mesoporous silica particles, and the first to seventh layers have optical thicknesses of 25.0-250.0 nm, 27.5-52.5 nm, 37.5-54.0 nm, 45.0-62.5 nm, 77.5-102.5 nm, 16.0-26.5 nm and 112.5-162.5 nm, respectively. | 02-04-2010 |
20110203519 | METHOD AND APPARATUS FOR FORMING OPTICAL FILM, AND OPTICAL ARTICLE - An apparatus for forming an optical film on an optical substrate is provided. The apparatus may include a rotatable jig for fixedly holding the optical substrate, an apparatus for rotating the jig, and a nozzle for dispensing a coating solution containing an optical-film-forming component onto the optical substrate. A rotation speed of the jig may be 8,000 rpm or more, and a deviation of rotation axis of the jig may be 50 μm or less. | 08-25-2011 |