Class / Patent application number | Description | Number of patent applications / Date published |
359888000 | Neutral or graded density | 9 |
20080297932 | OPTICAL FILTER AND IMAGE PICKUP APPARATUS - This invention decreases a spectral reflectance in the entire visible wavelength range, to decrease inconveniences in an image such as flare or ghost. A non-reflective periodic layer including a large number of fine uneven periodic structure bodies is formed on a substrate, and an ND film is formed on the other surface of the substrate by vacuum deposition, to improve an anti-reflection function. Regarding a beam entering the ND filter, the MgF | 12-04-2008 |
20080316628 | Density filter, method of forming the density filter and apparatus thereof - A film coating method enables, when forming film layers in response to optical characteristics on a substrate, to coat gradation range layers of decreasing thickness without distributions, and to coat films on a plurality of substrates at the same time. The gradation range layer is formed by sputtering evaporation targets of dielectric substances with an introduction gas, followed by forming the films with compounds generated by applying a reactive gas to the films. | 12-25-2008 |
20090080098 | Absorption Type Multi-Layer Film ND Filter and Process for Producing the Same - An absorption type multi-layer film ND filter having a substrate formed of a resin film and provided on at least one side thereof an absorption type multi-layer film formed of oxide dielectric film layers and absorption film layers which are alternately formed in layers, characterized in that the oxide dielectric film layers are each constituted of an SiCyOx (003-26-2009 | |
20090128939 | Durability broad band metallic neutral density optical filters and related methods of manufacture - The present application disclosed various embodiments of improved durability broad band metallic neutral density optical filters and various methods for the manufacture thereof. The devices disclosed herein include a fully densified protective thin-film layer that is essentially 100% bulk devices, free of substantially all porosity, thereby providing full environmental protection of the underlying sensitive metallic filter layer and substrate. In one embodiment, the present application is directed to a neutral density filter and includes a substrate, at least one metallic filter layer having a thickness from about 10 nm to about 100 nm applied to the substrate, and at least one protective layer having a thickness of about 10 nm to about 100 nm applied to the filter layer using an ion-plating process. | 05-21-2009 |
20100014178 | Absorption type multi-layer film ND filter - In an absorption type multi-layer film ND filter having a thin substrate and provided thereon first and second absorption type multi-layer films which attenuate transmitted light, the first and second absorption type multi-layer films are constituted of multi-layer films each consisting essentially of dielectric layers formed of SiO | 01-21-2010 |
20120307388 | Adjustable Color Correction Automated High Intensity Stage Lights - Color correction system for an automated stage light that allows the color temperature of the light beam to be continuously adjustable to both a higher and lower Kelvin value than the natural temperature of the open beam, by filtering using a dual peak filter and also color correcting the beam. | 12-06-2012 |
20140022659 | ELECTROSTATIC LIGHT ATTENUATION AND INFORMATIONAL CARRIER SYSTEM AND METHOD - An apparatus and method for attenuating light transmitted through a surface. The apparatus may include a light attenuator comprised of a substrate and an electrostatic layer. The electrostatic layer may be configured to electrostatically couple with the surface. The electrostatic layer may also electrostatically couple with the substrate. The substrate, the electrostatic layer or layers, or a light attenuating substance combined with at least one of the substrate and the electrostatic layer may attenuate light transmitted through the surface. The method may include positioning the light attenuator on the surface between the light source and the light receiver. | 01-23-2014 |
20140233127 | SYSTEM WITH GRADUAL CHANGE OF LIGHT DISTRIBUTION OR SHADOW DISTRIBUTION ON A SURFACE COMPRISING LIGHT ELEMENTS OR PHOTOVOLTAIC ELEMENTS - The present invention refers to a system including light processing elements, arranged in a respective installation area and combined with a respective construction, at least partially above and/or next to an occupational or passage space, whereby said light processing elements or respective constructions produce a general light distribution over said occupational or passage space, that is more favorable in terms of visual performance and comfort, and that may assist and adjust to activities requiring different levels thereof. The inventive system is used for energy and/or information conversion and distribution, as part of one construction or clusters of constructions, for example disposed along traffic ways. | 08-21-2014 |
20140293468 | APODIZATION FILTER AND METHOD OF MANUFACTURING THE SAME - A light-blocking mask layer ( | 10-02-2014 |