Abstract:
An apparatus for exposing a flat card to sanitizing radiant energy, has an enclosure that has an exposure chamber having a source of sanitizing radiation. A first insert slot and a second insert slot, disposed along an input surface of the enclosure are each configured to accept insertion of the flat card. A transport apparatus defines a first transport path to convey the flat card from the first insert slot, and through the exposure chamber, to emerge from a first output that opens on a first side surface of the enclosure and a second transport path to convey the flat card from the second insert slot, and through the exposure chamber, to emerge from a second output that opens on a second side surface of the enclosure that is opposite the first side surface.
Abstract:
An apparatus for exposing an article to radiant energy has a rotating carousel having an article support in a support sector defined between a first energy-blocking feature of the rotating carousel and a second energy-blocking feature of the rotating carousel. An actuator is energizable to rotate the carousel and to revolve the article support along a circular transport path. An enclosure has a stationary hood that defines an enclosed sector of the transport path and an unenclosed sector of the transport path. There is at least a first radiant energy source energizable to direct the radiant exposure energy toward the carousel along the enclosed sector of the transport path.
Abstract:
The present disclosure relates to thin film optical interference filters. The filters include a substrate and a plurality of alternating material layers deposited on the substrate. When operated at about 45° angle of incidence, the filters exhibit at least one of improved polarization splitting, edge steepness, bandpass bandwidth, and blocking, relative to conventional thin film interference filters.
Abstract:
In accordance with the invention, a filter is fabricated by a modified form of the process disclosed in U.S. Pat. No. 7,068,430. In particular, the method is modified to take into account the effect of absorption by filter material. The method is exemplified by the fabricating of an ultraviolet light transmission filter for transmitting a band within the range 230-320 nanometers. The resulting filter comprises plurality of hard-coating, thin-film layers of alternating high and low index of refraction. The improved filter provides high transmission, sharp edge slopes, and deep and extended out-of-band blocking. As compared with currently available filters, the filter provides transmission up to three or more times greater, edge slopes up to four times sharper, and deep extended out-of-band blocking extending further, even through the visible range.
Abstract:
Thin-film interference filters are constructed with a generalized pattern of layers differing in both thickness and refractive index to produce spectral responses appropriate for adjusting optical power among a plurality of different wavelength channels. Each of the layers is composed of unit sub-layers having thicknesses equal to a quarter-wavelength thickness of a monitoring beam. Interference fluctuations of the monitoring beam associated with the deposition of the unit sub-layers enable a gain-flattening filter to achieve greater manufacturing accuracy by exploiting self-correcting effects of “turning point monitoring” techniques.
Abstract:
An optical recording material which when exposed to actinic radiation produces a change in optical properties in the exposed regions, thereby providing a pattern of intelligence for storing and retrieving information, the recording material comprising: a) a binder; b) a reactant which is capable of undergoing a chemical transformation upon a one electron oxidation, thus causing the change in optical properties in the exposed regions; and c) a sensitizer capable of absorbing actinic radiation to cause an initial one electron oxidation of the reactant.
Abstract:
The present invention is predicated upon the discovery by applicants of a relationship describing thermal decay of radiation-induced index changes and a mechanism which permits stabilization by accelerated aging. Specifically, the induced index change decays in proportion to 1/(1+At.sup..alpha.) where A and .alpha. are functions of temperature, and the decay can be accelerated by heat treatment. As a consequence, the extent of decay can be determined for arbitrary time and temperature and, significantly, an appropriate heat treatment can be scheduled for making a device stable within predeterminable limits.
Abstract:
An optical image splitter disposed in the path of image-bearing light along an optical axis has a coated dichroic surface disposed at an angle of 15 degrees or less relative to incident light along the optical axis. The coated dichroic surface has a number of layers of material, the of layers including layers having a first refractive index, nL, and layers having a second refractive index, nH, greater than the first refractive index. The coated surface transmits light of at least a first wavelength range to form a first image at an image plane and reflects light of a second wavelength range to form a second image at the image plane.
Abstract:
The present disclosure relates to thin film notch filters having the basic structure of an interference filter. In some embodiments, the filters according to the present disclosure exhibit at least one notch correlating to a pass band defect. The filters of the present disclosure may exhibit at least one of improved pass band bandwidth, improved edge steepness, narrower notch band FWHM, and lower sensitivity to material mismatch, relative to prior known thin film notch filters based on the basic structure of an interference filter. The present disclosure also relates to methods of making the filters described herein, and the use of these filters in optimal measurement systems.
Abstract:
Optical components and their methods of manufacture are provided, including a first stack of layers configured to exhibit a first stop band for s-polarized radiation and a second stop band for p-polarized radiation incident on the first stack of layers at an oblique angle, a second stack of layers configured to exhibit a third stop band for s-polarized radiation and a fourth stop band for p-polarized radiation incident on the second stack of layers at the oblique angle, where the cut-on wavelength for the first stop band is approximately equal to or larger than the cut-off wavelength for the third stop band. Optical components are further provided to include extended blocking functionality, and to permit stress balancing in thin-film coatings on opposite sides of a substrate.