Abstract: A method for measuring a chemical concentration in tissue has two measurement steps. A portion of tissue is illuminated with a first generated light and a second generated light. A first Raman scattered light, corresponding to the first generated light, and a second Raman scattered light, corresponding to the second generated light, are directed to a plurality of light sensors, each light sensor measuring light at a different wavelength, that wavelength being proximate to a wavelength of an expected Raman shift wavelength for the chemical in the tissue. A measurement is obtained from each light sensor, each measurement being specific to the first scattered light and/or the second reflected light to that light sensor. The measurements of the first scattered light and the measurements of the second scattered light are used to calculate a concentration of the chemical in the tissue.

Abstract: A method for measuring a chemical concentration in tissue has two measurement steps. A portion of tissue is illuminated with a first generated light and a second generated light. A first Raman scattered light, corresponding to the first generated light, and a second Raman scattered light, corresponding to the second generated light, are directed to a plurality of light sensors, each light sensor measuring light at a different wavelength, that wavelength being proximate to a wavelength of an expected Raman shift wavelength for the chemical in the tissue. A measurement is obtained from each light sensor, each measurement being specific to the first scattered light and/or the second reflected light to that light sensor. The measurements of the first scattered light and the measurements of the second scattered light are used to calculate a concentration of the chemical in the tissue.

Abstract: A method for measuring a chemical concentration in tissue has two measurement steps. A portion of tissue is illuminated with a first generated light and a second generated light. A first Raman scattered light, corresponding to the first generated light, and a second Raman scattered light, corresponding to the second generated light, are directed to a plurality of light sensors, each light sensor measuring light at a different wavelength, that wavelength being proximate to a wavelength of an expected Raman shift wavelength for the chemical in the tissue. A measurement is obtained from each light sensor, each measurement being specific to the first scattered light and/or the second reflected light to that light sensor. The measurements of the first scattered light and the measurements of the second scattered light are used to calculate a concentration of the chemical in the tissue.

Abstract: A method for measuring a chemical concentration in tissue has two measurement steps. First, generating a first light and illuminating a portion of the tissue with the first light; capturing a first reflected light from the tissue; directing the first reflected light to a plurality of light sensors, each light sensor measuring light at a different wavelength, that wavelength being proximate to a wavelength of an expected Raman shift wavelength for the chemical in the tissue; and obtaining a measurement from each of the light sensors, each measurement being specific to the first reflected light through that light sensor.

Abstract: A teleprompter configured to project an image to a viewer at a viewer location comprises a single-beam teleprompter projector, configured to project an image to a focal plane, and a directional screen, disposed at the focal plane. The directional screen is configured to direct the image to a focal point at the viewer location, and diffuse the image within a limited viewing region surrounding the focal point, such that the apparent brightness of the image to the viewer at the viewer location is increased, and the visibility of the image to persons other than the viewer is reduced. Because the device concentrates the light at the viewer, it can be made much larger than conventional video monitors typically used in speech-prompter settings, while still maintaining very high brightness.

Abstract: A teleprompter configured to project an image to a viewer at a viewer location comprises a single-beam teleprompter projector, configured to project an image to a focal plane, and a directional screen, disposed at the focal plane. The directional screen is configured to direct the image to a focal point at the viewer location, and diffuse the image within a limited viewing region surrounding the focal point, such that the apparent brightness of the image to the viewer at the viewer location is increased, and the visibility of the image to persons other than the viewer is reduced. Because the device concentrates the light at the viewer, it can be made much larger than conventional video monitors typically used in speech-prompter settings, while still maintaining very high brightness.