Abstract: A mounting device for mounting an optical panel on the front side of a housing which contains means having an illuminated display area and a bezel on its front side that frames the display area, the bezel having holes located in spaced regions, the device comprising a body having front and rear sides, means carried by the body and projecting from the rear side of the same dimension to be received in one of said holes and to be retained therein, and means for removably attaching the contiguous surface of an applied panel to the front side of the body.

Abstract: Optical article having a substrate with first and second surfaces and with a conductive antireflection coating disposed on the first surface. The conductive antireflection coating is comprised of at least one layer of a low index material carried by said first surface and a thin transparent conducting layer of a material having a high index of refraction carried by the layer of material having a low index of refraction. The conducting layer provides an exposed surface to which the direct electrical contact can be made. The conducting layer has an optical thickness ranging from 1.0 to 30.0 nanometers. The layer of material having a low index of refraction has its design thickness reduced to compensate for the thickness of the conducting layer whereby the conducting layer does not seriously degrade the optical performance of the coating over that which could be obtained without the use of the conducting layer.

Abstract: A transparent electromagnetic shield adapted for use on an information display device in electronic equipment. First and second transparent substrates each having major front and back surfaces are adapted to be mated together with a front surface of one substrate facing a back surface of the other. A conductive wire screen is interposed between the first and second substrates in physical contact with one of the mating front and back surfaces thereof and a single layer of polymer laminating material is interposed between the screen and the other of the mating surfaces. The layer of polymer laminating material fills the apertures in the screen and contacts portions of both mating surfaces to bond the screen and the two substrates together. An embodiment in which the wire screen is provided in contact with a conductive transparent optical coating on one of the mating surfaces of the substrates is also disclosed.

Abstract: A thin film optical filter having a bandpass reflectance characteristic with one of the transition wavelength edges thereof being non-polarizing for radiation incident at a preselected non-normal angle. The filter comprises a transparent substrate and a multilayer thin film optical coating provided on one surface thereof. The optical coating includes a preselected number of alternate layers of a first higher refractive index dielectric material and a second lower refractive index dielectric material arranged as a sequence of dielectric multilayer stacks with intervening spacer layers formed of one of the dielectric materials. The optical thickness of the spacer layers is detuned from half-wave optical thickness to shift either the low wavelength transition edges or the high wavelength transition edges for the separate bandpass response characteristics for the two principal polarization planes substantially into alignment with each other.

Abstract: Multi-layer coating apparatus and system for coating a substrate having a coating chamber and means for advancing the substrate in a horizontal position through the coating chamber. The coating chamber is provided with means for depositing the coating on the bottom side of the substrate as it is advanced through the chamber. Means is provided for preventing one substrate from bumping into another and for providing a predetermined spacing from the substrates as they are advanced through the coating chamber.

Abstract: Apparatus and method for forming high quality thin film oxide layers on a substrate by a reactive evaporation process utilizing an oxygen plasma activation source in the form of a cylindrical boule of insulating material surrounded by a radio frequency coil for generating a radio frequency electromagnetic field in the boule of sufficient magnitude to create a self-igniting oxygen plasma within the boule without evaporating material from the walls thereof.

Abstract: Multi-layer coating apparatus and system for coating a substrate having a coating chamber and means for advancing the substrate in a horizontal position through the coating chamber. The coating chamber is provided with means for depositing the coating on the bottom side of the substrate as it is advanced through the chamber. Means is provided for preventing one substrate from bumping into another and for providing a predetermined spacing from the substrates as they are advanced through the coating chamber.

Abstract: A contrast enhancement filter is produced by photographic reproduction of a master filter on to positive color transparency film. The master filter may be a multilayer thin film optical filter. The developed positive color transparency film may be laminated between a pair of glass sheets with layers of an ultraviolet absorbing polymer material.

Abstract: Contrast enhancement filter having first and second transparent glass substrates with first and second surfaces with the first surface of each facing the medium in which the filter is disposed. A sheet-like circular polarizer is provided formed of stretched plastic members covered by layers of cellulose acetate butyrate. The circular polarizer is disposed between the first and second glass substrates and faces the second surfaces of the glass substrates. A dried plastisol primer layer is disposed on the surface of the layers of cellulose acetate butyrate facing the glass substrates. First and second layers of polyvinyl butyral adhesive secure the layers of cellulose acetate butyrate carried by the circular polarizer with the primer layers thereon to the second surfaces of the glass substrates. An anti-reflection coating is disposed on the first surface of the first substrate.

Abstract: A flexible polymer substrate coated with an aluminum oxide thin film of an optimum adherent thickness of at least about 170 nanometers, with a final optical coating of preselected design formed on the aluminum oxide film.

Abstract: A high reflectance mirror utilizing a dielectric stack having multiple layers of low and high refractive index material, at least one of which is absorbing at the design wavelength. At least one pair of layers is formed on a substructure with the thickness of the individual layers being both different from a quarterwave optical thickness and preselected to maximize the reflectance of the mirror. Mirrors in which both dielectric materials in the stack have different absorptances at the design wavelength are disclosed with the layer thickness of one or more optimum pairs formed on a substructure being different from a quarterwave optical thickness such that the layers of higher absorptance material are less than a quarterwave optical thickness and the layers of lower absorptance material are more than a quarterwave optical thickness.

Abstract: Solar cell construction having a body formed essentially of silicon and having a surface with a photovoltaic junction applied thereon. An anti-reflection coating is formed on the surface. A transparent protective cover is provided. A cut-on filter is carried by the cover for reflecting solar energy below approximately 350 nanometers. A layer of substantially transparent cement is used for securing the protective cover to the body so that it overlies the junction and the anti-reflection coating. The cut-on filter includes a stack of high and low index layers for reflecting solar energy in the ultra-violet region of 350 nanometers and below and also may include at least one additional layer of material of absorbing ultraviolet energy below 350 nanometers which passes through the high and low index layers above it.

Abstract: Contrast enhancement filter having first and second transparent glass substrates with first and second surfaces with the first surface of each facing the medium in which the filter is disposed. A sheet-like circular polarizer is provided formed of stretched plastic members covered by layers of cellulose acetate butyrate. The circular polarizer is disposed between the first and second glass substrates and faces the second surfaces of the glass substrates. A dried plastisol primer layer is disposed on the surface of the layers of cellulose acetate butyrate facing the glass substrates. First and second layers of polyvinyl butyral adhesive secure the layers of cellulose acetate butyrate carried by the circular polarizer with the primer layers thereon to the second surfaces of the glass substrates. An anti-reflection coating is disposed on the first surface of the first substrate.

Abstract: A coating apparatus having a housing and a vacuum pump for establishing a vacuum in the housing. First and second rotors are disposed within the housing for rotation about axes which are offset from the horizontal by less than 45.degree. whereby the upper portions of the rotors are in relatively close proximity to each other and the lower portions of the rotors are spaced apart from each other. A source of coating material is disposed between the rotors generally in line with the axis of rotation of the rotors.

Abstract: Method for forming mixed oxide and/or nitride films upon the surface of an article by the use of a partially confined plasma-activated source. The plasma-activated source has a cavity in which an RF field is formed within the cavity to create a gas plasma in the cavity as gas is introduced into the cavity. The gas plasma is caused to exit from the cavity to impinge upon the surface of the article to be coated. At least one of the constituents of the film is selected as a compound vapor and is chemically reacted with at least one other constituent by utilization of the gas plasma to form the thin film on the surface of the article while the article is maintained at a low temperature. A chemical reaction takes place within the cavity itself and/or alternatively at the surface to be coated for the formation of the films.

Abstract: Visible transmitting and infrared reflecting filter having a substrate formed of a material capable of transmitting visible light or absorbing visible light and having a surface and a coating carried by the surface of the substrate. The coating comprises at least one period of a multilayer stack which is reflecting in the infrared and transmitting at shorter wavelengths. The period is formed of a plurality of layers of high and low index materials with alternate layers being formed of materials having a high index of refraction and the other layers being formed of materials having a low index of refraction. At least one anti-reflection layer is disposed between adjacent layers of the period for matching the layers of the period to each other in the visible so that the transmission of the filter is relatively high over a relatively wide wavelength band at shorter wavelengths while maintaining high reflection and low absorption at the longer wavelengths.

Abstract: Solar cell for use in a concentrator having a body formed essentially of silicon doped with a P-type impurity and having a base resistivity ranging from 0.5 to 1.5 ohm-centimeter and having back and front side planar surfaces. A layer of aluminum is formed on the back side surface and is alloyed into the silicon body to form a P-plus layer extending through the back side surface. An N+ layer is formed in the silicon body and extends through the front side surface. A multi-layer metal contact structure is secured by the backside and makes a P-type contact. A multi-layer metal contact structure is carried by the front side surface and makes an N-type contact. The multi-layer contact structure carried by the front side surface is formed into a grid line pattern with the grid line pattern being characterized by first and second common bus bars extending substantially through 360.degree. on said surface and being spaced at different distances from the center of the front side surfaces.

Abstract: Lighting fixture having housing with an open side. A lamp is mounted in the housing and is capable of producing light rays which pass through the open side of the housing. A glass protective covering is carried by the housing and encloses the open side. At least one surface of the glass is provided with anti-reflection film formed by a chemical etch/leach process on the one surface. The anti-reflection film increases the transmission of the high angle light rays from the lamp.

Abstract: Coating apparatus having a vacuum chamber and a rotary motion assembly rotatably mounted in the vacuum chamber. Drive means is carried by the vacuum chamber for rotating the rotary motion assembly on an axis. At least one coating source is disposed within the chamber and is generally coincident with the axis of rotation for the rotary motion assembly. A mask structure is mounted in the chamber for rotational movement about an axis which is generally coincident with the axis of rotation of the rotary motion assembly. Additional drive means is provided for rotating the mask structure as the rotary motion assembly is rotated.

Abstract: Apparatus for scribing a planar work piece includes a vacuum chuck table and a scribe bridge assembly moveable along shaft tracks straddling the table surface. The bridge assembly supports first and second sets of scribe devices which can be alternately rotated into engagement with a work piece as the bridge assembly moves along the tracks. The assembly is driven at both ends by chain drives by synchronized movement.