Abstract: Improved optically absorptive surfaces as well as surfaces and structures exhibiting reduced or minimized optical scattering or reflection, including an improved optically black surface that can be used for stray light suppression having macroscopic repetitive features with multiple facets and/or curved faces that direct near specular rays and scattered rays from one feature element to neighboring elements.

Abstract: A device for improving the suppression of light from a Pulsed Xenon light source for spectrometry by combining a Variable Longpass Order-Sorting filter with a Dichroic Balancing filter coated on a fused Silica substrate is disclosed.

Abstract: A method for generating uniform light with a tailored spectrum using one or more light sources, an integrating space, and one or more selected phosphors to build stable absolute irradiance calibration light sources for fiber and cosine correctors is disclosed.

Abstract: A method to adjust the energy transmitted from a multiplicity of light sources to provide an adequate reference for spectral measurement or control using a multichannel feedback adjustment algorithm that compensates for the interactions between adjacent spectral ranges and sets reference light sources for optimal system performance using a normalized energy value for each spectral range is disclosed.

Abstract: An optical slit device that combines microelectromechanical design techniques, semiconductor laser technology, and micro-optics to provide a spectrometer entrance slit on a semiconductor substrate with integrated calibration light sources, which integrated light enters the entrance slit and is transmitted down the same optical path as a light source under test and by which the spectrometer can be wavelength calibrated in situ is disclosed.

Abstract: A single lithography process for multi-layer metal/dielectric coatings using a series of developing, baking, and lifting steps to coat two or more thin films without re-patterning that results in the encapsulation and profile optimization of multi-spectral patterned thin film coatings is disclosed.

Abstract: An optical system design using Morse Taper mounted optical components for improving alignment performance, and more specifically a spectrometer design wherein the components include Morse Taper male tapers and the spectrometer bench include Morse Taper female openings that eases alignment and improves alignment stability, both physical and temperature related, of optical components while simplifying manufacture and maintaining a compact footprint is disclosed.

Abstract: A spectrometer design method that corrects aberration by using crossed optical paths and minor alignment, simplifies manufacture by applying the light entrance slit and aperture on opposite sides of a transparent input block, and creates a more compact footprint by placing a 45 degree mirror or right angle prism directly in front of the detector is disclosed.

Abstract: An aperture shaped to provide a narrow beam in the horizontal plane but a wider beam in the vertical plane that will provide improved image quality in spectrometers without sacrificing as much throughput as typically experienced using a reduced diameter round aperture along with a method of mounting the entrance slit and the limiting aperture on a transparent block for optical stability and ease of alignment is disclosed.

Abstract: A method of making specially shaped mirrors for astigmatism correction in spectrometers having a folded optical path using two mirrors by determining the curvature of one or both mirrors in the vertical direction such that the focal length in the sagittal direction of each of said one or both mirrors becomes the same as the focal length in the tangential direction wherein the radius of curvature of each of one or both mirror in the sagittal plane is adjusted to be equal to the radius of curvature in the tangential plane of each of one or both mirrors times the square of the cosign of the angle of incidence of the optical path at each of one or both mirrors is described.

Abstract: This disclosure describes a device that belongs to the field of optical devices. More specifically it is a novel way of achieving light splitting or combining using a spherical reflector with a single input and multiple outputs, or multiple inputs and a single output.

Abstract: This disclosure describes a method of using specially shaped mirrors for astigmatism correction in spectrometers having a folded optical path.

Abstract: This disclosure describes a spectrometer design that corrects aberration by using crossed optical paths, simplifies manufacture by applying the light entrance slit and aperture on opposite sides of a transparent input block, and creates a more compact footprint by placing a 45 degree mirror or right angle prism directly in front of the detector.

Abstract: This disclosure describes an aperture shaped to provide a narrow beam in the horizontal plane but a wider beam in the vertical plane that will provide improved image quality in spectrometers.