The present invention provides a method and compact apparatus for laser induced breakdown atomic emission spectroscopy from a targeted sample having a laser generating a laser beam, the laser beam directed to the sample, optical means for manipulating the laser beam in order maximize laser fluency at the target surface of the sample, the laser beam generating ablation and plasma emission from the sample at the target surface, an emission spectrometer having a detector for detecting a plasma plume from the plasma emission.

The invention relates to a method for two-dimensional, spatially resolved measurement of tristimulus values of light emitted from a plurality of positions on a sample. It is an object of the invention to provide an improved method and system for spatially resolved chromaticity and luminance measurement in a standardized color space for display testing. The method of the invention comprises the steps of: directing a first portion of the light to an RGB camera which produces a two-dimensional map of RGB color values; transforming the RGB color values into first tristimulus values to produce a map of tristimulus values; directing a second portion of the light to a colorimeter which produces second tristimulus values; deriving a tristimulus correction by comparing the second tristimulus values with at least a subset of the first tristimulus values; and applying the tristimulus correction to the first tristimulus values to produce a corrected map of tristimulus values. Moreover, the invention relates to an imaging colorimeter system capable of two-dimensional, spatially resolved measurement of tristimulus values of light emitted from a plurality of positions on a sample.

A biometric sensor that measures biometric information and a biometric analysis system including the biometric sensor are provided. The biometric sensor may include: a light source configured to emit light toward a region of interest of an object under examination, the light being diffused at the region of interest; a collimator that includes a though-hole and is configured to collimate the diffused light received from the region of interest; and a spectrometer configure to analyze the diffused light transmitted by the collimator.

A spectroscopy system that includes a light source that generates light having a plurality of wavelengths, a light transmitter that transmits the light to a target analyte, a light receiver that receives Raman-scattered light scattered from the target analyte, and a multi-wavelength spectroscopy assembly that acquires a spectrum by splitting the Raman-scattered light transmitted from the light receiver. The multi-wavelength spectroscopy assembly includes a single diffraction grating configured to diffract the Raman-scattered light and a single concave mirror configured to focus the Raman-scattered light.

Wide spectrum optical systems and devices are provided for use in multispectral imaging systems and applications, and in particular, wide spectrum optical assemblies are provided which are implemented using low cost, first surface mirrors in an optical framework that enables real-time viewing of an image in multiple spectral bands simultaneously over the same optical centerline with one main optical element.

A compact wavelength dispersing device and a wavelength selective optical switch based on the wavelength dispersing device is described. The wavelength dispersing device has a folding mirror that folds the optical path at least three times. A focal length of a focusing coupler of the device is reduced and the NA is increased, while the increased optical aberrations are mitigated by using an optional coma-compensating wedge. A double-pass arrangement for a transmission diffraction grating allows further focal length and overall size reduction due to increased angular dispersion.

An electrical inspection method includes: a step of preparing a wafer in which a plurality of Fabry-Perot interference filter portions is formed, each of the plurality of Fabry-Perot interference filter portions in which a distance between a first mirror portion and a second mirror portion facing each other varies by an electrostatic force; and a step of inspecting electrical characteristics of each of the plurality of Fabry-Perot interference filter portions.

A handheld LIBS analysis method features a moveable laser focusing lens, and a laser beam directed to a sample via the laser focusing lens. A first mirror includes an aperture for the laser beam. This mirror is oriented to re-direct plasma radiation for delivery to a detection fiber.

A handheld LIBS spectrometer system features an optics stage moveable with respect to a housing and including a laser focusing lens. A laser source is mounted in the housing for directing a laser beam to a sample via the laser focusing lens. A detection fiber is mounted in the housing and is fixed relative thereto. A first mirror is fixed relative to the housing and includes an aperture for the laser beam. This mirror is oriented to re-direct plasma radiation for delivery to the detection fiber. A controller subsystem is responsive to the output of a spectrometer subsystem and is configured to control the laser source and the optics stage.

A biometric sensor that measures biometric information and a biometric analysis system including the biometric sensor are provided. The biometric sensor may include: a light source configured to emit light toward a region of interest of an object under examination, the light being diffused at the region of interest; a collimator that includes a though-hole and is configured to collimate the diffused light received from the region of interest; and a spectrometer configure to analyze the diffused light transmitted by the collimator.