Abstract: A system for evaluating the reflectance of an object (e.g., a CRT) that is coated with an anti-reflective coating material is disclosed. The quality and/or uniformity of the coating is evaluated by a reflectometer. The reflectometer is positioned relative to the object by non-contact sensors. Reflectance data gathered by the reflectometer is analyzed to determine to what extent the actual coating differs from the optimal (i.e., ideal) coating. A feedback system modifies the coating process for subsequent objects in an attempt to fine-tune the coating process and achieve optimal anti-reflective coatings.

Abstract: An article comprising a transparent or translucent polymer substrate and a transparent or translucent coating applied thereto in which the refractive index of the coating material substantially matches the refractive index of the polymer substrate. The invention also relates to a method for making an article comprising a polymer substrate and a coating in which the refractive index of the coating substantially matches the refractive index of the polymer substrate.

Abstract: A method and system for designing and manufacturing a high-performance, optimized optical interference coatings that have a minimal number of layers. Index of refraction, absorption coefficient, and thickness values are selected for each of the layers in the design so as to cause the reflectance of a coated object to be zero for a given wavelength. Materials that with the selected properties are manufactured by mixing two or more preexisting available materials.

Abstract: A system for evaluating the reflectance of an object (e.g., a CRT) that is coated with an anti-reflective coating material is disclosed. The quality and/or uniformity of the coating is evaluated by a reflectometer. The reflectometer is positioned relative to the object by non-contact sensors. Reflectance data gathered by the reflectometer is analyzed to determine to what extent the actual coating differs from the optimal (i.e., ideal) coating. A feedback system modifies the coating process for subsequent objects in an attempt to fine-tune the coating process and achieve optimal anti-reflective coatings for later objects passing through the system.

Abstract: An optical analyzer measuring the reflectivity of a moving article in an in-line sputtering deposition system. The optical analyzer includes a light source which provides a light beam. Light is reflected from an optical coating of a moving article into a concentrator, which captures and directs the reflected light to a detector. The analyzer may be mounted in an evacuable chamber in which the end walls have openings to allow passage of the article.

Abstract: A multilayer antireflection coating for a temperature sensitive substrate such as plastic. One layer is a DC reactively sputtered metal oxide which may be deposited quickly and without imparting a large amount of heat to the substrate. Another layer has a refractive index lower than the substrate.

Abstract: High purity (95-99.5 percent) red, orange and yellow filters are disclosed which comprise a periodic stack of relatively low index of refraction dielectric material (L) such as SiO.sub.2 or MgF.sub.2 and absorbing relatively high index material such as silicon or Fe.sub.2 O.sub.3. Together, the low and high index materials provide a high index ratio (typically 1.7 to 2.5). The filters are fabricated according to designs such as (H/2 L H/2).sup.n, typically using only 5 to 7 layers. Despite the very small layer count, these filters provide overall optical performance which is at least the equivalent of all-dielectric filters of 30 or more layers, with color purity that is unachievable by all-dielectric filters and simple low cost design. In addition, our filters have inherently low stress levels and absorb and reflect unwanted light such as blue light.

Abstract: A method and apparatus are disclosed for taping the lead (10) and tail (20) ends of a web (12) during winding of the web onto a core (14), in which a vacuum drum (72) advances tape (66) past a cutter (126) to provide tape strips (16,22) to be applied when the drum initially is lowered into contact with the empty core and subsequently is raised and lowered again by a cylinder (36) into contact with the fully wound core.

Abstract: There is disclosed a test element advancing mechanism for use in an analyzer to move such test element from station to station, and a method of doing the same. The mechanism features a support surface over which the test elements move in a predetermined direction, a test element mover for engaging and moving the test elements, means for reciprocating the mover along a surface disposed to one side of the support surface, a portion of said mover being constructed to engage the reciprocating means, and means for pivoting the mover about an axis that extends parallel to the movement direction so that the engaging means are moved into or out of contact with such test elements. The test element mover includes a lever arm emanating from one side of the reciprocating means engaging portion, constructed to interact with the pivoting means.