Abstract: The invention relates to a system and a method for optical measurement of a target, wherein the target is illuminated, either actively illuminated, reflecting ambient light, or self illuminating, and a measurement light beam received from the target or through it is detected. The prior art optical measurement systems generally include mechanical filter wheels and photomultiplier tubes, which cause the equipment to be expensive, large-sized and often not sufficiently accurate and stable. The objective of the invention is achieved with a solution, in which the illuminating light beam and/or measurement light beam is led through a Fabry-Perot interferometer or a set of two or more Fabry-Perot Interferometers, and the pass band of the Fabry-Perot interferometer or a set of two or more Fabry-Perot Interferometers is controlled during the measurement of a single target. The invention can be applied in optical measurements where, for example, reflectance, absorption of fluorescence of the target is measured.

Abstract: An imaging section that detects the amount of light separated by a wavelength tunable interference filter to acquire a spectroscopic image (imaging device and light amount acquisition section) detects the amount of light successively separated for three wavelengths to acquire spectroscopic images for producing a combined image. A display controller causes a display section to display a combined image based on the spectroscopic images for producing the combined image. A specified position detection section identifies based on user's operation a specified position where a colorimetry result is to be outputted. The imaging section detects the amount of light successively separated for a plurality of wavelengths by the wavelength tunable interference filter to acquire spectroscopic images for colorimetry corresponding to the plurality of wavelengths. A colorimetry section measures the color in the specified position by using the amount of light obtained from each of the spectroscopic images for colorimetry.

Abstract: A monitoring system 100 comprising a material transport system 104 providing for the transportation of a substantially planar material 102, 107 through the monitoring zone 103 of the monitoring system 100. The system 100 also includes a line camera 106 positioned to obtain multiple line images across a width of the material 102, 107 as it is transported through the monitoring zone 103. The system 100 further includes an illumination source 108 providing for the illumination of the material 102, 107 transported through the monitoring zone 103 such that light reflected in a direction normal to the substantially planar surface of the material 102, 107 is detected by the line camera 106. A data processing system 110 is also provided in digital communication with the line camera 106.

Abstract: A system and method for detecting at least one target of interest using at least two conformal filters in a dual polarization configuration. A plurality of interacted photons are collected from a sample comprising at least one analyte of interest. The plurality of interacted photons are separated into at least a first and second optical component. The first optical component is passed through a first conformal filter and the second optical component is passed through a second conformal filter. A Data set corresponding to each filtered optical component is generated and an optical computation is applied to assess at least one characteristic of the analyte.

Abstract: A filter arrangement can transmit and/or reflect light emanating from a moving object so that the emanating light has time variation, and the time variation can include information about the object, such as its type. For example, emanating light from segments of a path can be transmitted/reflected through positions of a filter assembly, and the transmission functions of the positions can be sufficiently different that time variation occurs in the emanating light between segments. Or emanating light from a segment can be transmitted/reflected through a filter component in which simpler transmission functions are superimposed, so that time variation occurs in the emanating light in accordance with superposition of two simpler non-uniform transmission functions. Many filter arrangements could be used, e.g. the filter component could include the filter assembly, which can have one of the simpler non-uniform transmission functions.

Abstract: The present disclosure provides a method for correcting a measurement deviation of a transmittance frequency spectrum of a color filter. With the standard measuring data of transmittance frequency spectrum of the color filter, based on the deviation between the standard measuring data and the instantaneous measuring data of the transmittance frequency spectrum, the measurement of the transmittance frequency spectrum can be corrected automatically, which reduces the time of the transferring of the glass, analysis of the data, and manual correcting, reduces the labor, improves the utilization rate and productivity of the machine. The present disclosure further provides a system correcting a measurement deviation of transmittance frequency spectrum of a color filter.

Abstract: In an optical measuring device, the visual observation section includes: a white light source which emits white light; a first objective lens arranged between the white light source and measurement object, through which the white light emitted from the white light source and return light from the measurement object transmit; a plurality of tube lenses which change a magnification of the return light passing through the first objective lens to a predetermined magnification; and a lens switching mechanism which can selectively switch the tube lenses so as to select one of the tube lenses to be arranged on the return light, and the special observation section includes: a special light source which emits special light; and a second objective lens arranged between the special light source and measurement object, through which the special light emitted from the special light source and return light from the measurement object transmit.

Abstract: Methods, apparatus and/or systems are disclosed for collecting and processing of spectral data from an object to enable the determination of the presence and/or amount of a target analyte present in the object is disclosed. The object may be a portion of a person's body such as the forearm, palms, fingers, or eye. The target analyte may be ethanol. The method/apparatus/system for performing such spectral data collection may include one or more broadband emitters such as thermal emitters (aka “black-body” or “gray-body” emitters), incandescent sources, light emitting diodes, and the like.

Abstract: The present invention relates to systems and methods for minimizing or eliminating diffusion effects. Diffused regions of a segmented flow of multiple, miscible fluid species may be vented off to a waste channel, and non-diffused regions of fluid may be preferentially pulled off the channel that contains the segmented flow. Multiple fluid samples that are not contaminated via diffusion may be collected for analysis and measurement in a single channel. The systems and methods for minimizing or eliminating diffusion effects may be used to minimize or eliminate diffusion effects in a microfluidic system for monitoring the amplification of DNA molecules and the dissociation behavior of the DNA molecules.

Abstract: A method and device for periodically perturbing the flow field within a microfluidic device to provide regular droplet formation at high speed.

Abstract: A spectrometer includes a first reflective film, a second reflective film facing the first reflective film with a gap interposed therebetween, a gap change portion that changes the amount of the gap by changing the relative position of the second reflective film with respect to the first reflective film, and a processing unit that outputs optical characteristic data at a predetermined first wavelength interval on the basis of light of a plurality of the wavelengths to be measured which are extracted by the first reflective film and the second reflective film by changing the gap amount using the gap change portion, wherein a full width at half maximum of a spectrum of at least one component of light among the light of the plurality of wavelengths to be measured which are extracted by the first reflective film and the second reflective film is larger than the first wavelength interval.

Abstract: A method for characterizing a primary radiant spectra of a projector includes projecting primary colors with a projector having a projector lamp and color filters. Measurements of each primary color are taken with a multi-band camera. Spectra of the color filters are estimated using the measurements from the multi-band camera. The primary radiant spectra of the projector are estimated using spectral data of the projector lamp and the estimated spectra of the color filters.

Abstract: A wavelength-tunable detector for use in a label-independent optical reader for reading at least one resonant waveguide grating (RWG) biosensor is disclosed. The wavelength-tunable detector includes a tunable wavelength filter. Broadband light is made incident upon the RWG biosensor to produce resonantly reflected light, which is then passed through the tunable wavelength filter whose central wavelength is adjusted, such as by varying the filter angle of the tunable wavelength filter. This generates filtered resonantly reflected light, which is detected by a photodetector that generates an electrical signal in response thereto. The electrical signal is representative of the detected spectrum, which includes the center resonant wavelength of the RWG biosensor. A controller can be used to determine the center resonant wavelength from the electrical signal.

Abstract: The invention relates to a system and a method for optical measurement of a target, wherein the target is illuminated, either actively illuminated, reflecting ambient light, or self illuminating, and a measurement radiation beam received from the target or through it is detected. The measurement system has optical fibres for guiding radiation from/to target positions. Radiation of several target positions is simultaneously filtered by a Fabry-Perot interferometer and detected by a row detector, for example.

Abstract: A wavelength-tunable detector for use in a label-independent optical reader for reading at least one resonant waveguide grating (RWG) biosensor is disclosed. The wavelength-tunable detector includes a tunable wavelength filter. Broadband light is made incident upon the RWG biosensor to produce resonantly reflected light, which is then passed through the tunable wavelength filter whose central wavelength is adjusted, such as by varying the filter angle of the tunable wavelength filter. This generates filtered resonantly reflected light, which is detected by a photodetector that generates an electrical signal in response thereto. The electrical signal is representative of the detected spectrum, which includes the center resonant wavelength of the RWG biosensor. A controller can be used to determine the center resonant wavelength from the electrical signal.

Abstract: A variable wavelength interference filter includes a first substrate having a stationary mirror, a second substrate bonded to the first substrate and provided with a movable section and a movable mirror fixed to the movable section, and a third substrate bonded to the second substrate on an opposite side to the first substrate, and is provided with a first inner space sandwiched by the first substrate and the second substrate, a first gap, through which the first inner space communicates with the outside, a second inner space sandwiched by the second substrate and the third substrate, and a second gap, through which the second inner space communicates with the outside, and the first gap and the second gap are each sealed by a sealing member.

Abstract: A spectral imaging system comprises a plurality of spectral units arranged in an array, each spectral unit of the plurality of spectral units comprising: a microlens having an optical axis; a spectral filter having a center wavelength and aligned with the optical axis; a fiber optic bundle, the fiber optic bundle having a curved light receiving surface and a planar light output surface, wherein the curved light receiving surface is aligned with the optical axis; and a plurality of pixel sensors configured to receive light from the planar light output surface of the fiber optic taper portion.

Abstract: Provided is a spectrometer capable of separating a particular wavelength component from light including a plurality of wavelength components by means of a small, simple configuration. The spectrometer comprises a filter part configured to transmit a specific wavelength component of light incident onto an incident surface. An illuminating means is configured to cause the light to be incident at respectively different incident angles onto a plurality of incident positions at different positions in the longer direction of the incident surface.

Abstract: This invention provides a novel methods and devices for measurement of particle concentration or changes in particle concentration over a wide linear range. The invention comprises one or more radiation sources and one or more detectors contained in a housing which is interfaced to a medium containing particulate matter. The one or more radiation sources are directed into the medium, scattered or transmitted by the particulate matter, and then some portion of the radiation is detected by the one or more detectors. Methods for confining the measurement to a specific volume within the medium are described. Algorithms are provided for combining the signals generated by multiple source-detector pairs in a manner that results in a wide linear range of response to changes in particle concentration. In one embodiment the sensor provides non-invasive measurements of biomass in a bioreactor. In another embodiment an immersible probe design is described, which may be suited for one-time use.

Abstract: A portable system and method for analyzing biological tissue samples and detecting analytes associated with tissue oxygenation using a conformal filter. A conformal filter, which may comprise a tunable filter, is configured to filter interacted photons conforming to a spectral shape correlated with an analyte of interest. Conformal filter configurations may be selected by consulting a modified look-up table associated with an analyte. An iterative methodology may be used to calibrate a conformal design for an analyte of interest, refine a previous conformal filter design for an analyte of interest, and/or generate a new conformal filter design for an analyte of interest.

Abstract: The invention relates to methods and systems for measuring and/or monitoring the chemical composition of a sample (e.g., a process stream), and/or detecting specific substances or compounds in a sample, using light spectroscopy such as absorption, emission and fluorescence spectroscopy. In certain embodiments, the invention relates to spectrometers with rotating narrow-band interference optical filter(s) to measure light intensity as a function of wavelength. More specifically, in certain embodiments, the invention relates to a spectrometer system with a rotatable filter assembly with a position detector rigidly attached thereto, and, in certain embodiments, the further use of various oversampling methods and techniques described herein, made particularly useful in conjunction with the rotatable filter assembly.

Abstract: A method for multispectral imaging that includes positioning a continuously graded color filter in front of a plurality of detectors. Wavelengths of energy passed by the filter vary smoothly along the filter length and the detectors are configured in a pattern having a plurality of rows each having a plurality of detectors. Each of the plurality of rows is oriented across the length of the filter. The method also includes measuring outputs of the detectors in response to moving an image along the length of the filter and generating a spectrum response function for the image based on the outputs of two or more rows of the detectors using a time delayed integration method.

Abstract: Micro-spectral sensors and methods are presented in which a Fizeau wedge interference filter is disposed between a focal plane array and a visible scene with an increasing wedge filter dimension varying along a scan direction, where the scene is scanned along the FPA to obtain light intensity measurements of a given scene location at different times using different FPA sensor elements through different wedge filter thicknesses, and the measurements correlated to the given scene location are Fourier transform to generate spectral data for the location.

Abstract: A method for matching colors including comparing the appearance of a first white color associated with a first color imaging system and a second white color associated with a second color imaging system, wherein the tristimulus values of the first and second white color are similar; determining a fixed correction to the tristimulus values of the second white color to achieve a visual match to the first white color; measuring a first set of spectral values for a first color associated with the first color imaging system; determining a first set of tristimulus values from the first set of spectral values; measuring a second set of spectral values for a second color associated with the second color imaging system; determining a second set of tristimulus values from the second set of spectral values; applying a correction to the tristimulus values of the second color; determining a difference between the tristimulus value of the first color and the corrected tristimulus value of the second color; and adjusting th

Abstract: A system for evaluating the susceptibility of a soybean plant to iron deficiency chlorosis is described. Soybean plants are planted in range and rows multiple micro-plots and a cart is used to pass a radiometric sensor over the micro-plots. The cart may have a sensor housing that is divided into multiple partitions with a radiometric sensor assembly positioned within each partition. Each sensor assembly generates a data signal and a computer receives and stores the data signals. The field cart is positioned above the range. The number of partitions corresponds to the number of rows in the range and each sensor assembly is positioned above a single row.

Abstract: Disclosed is a method for testing a light-emitting device comprising the steps of: providing a light-emitting device comprising a plurality of light-emitting diodes; driving the plurality of the light-emitting diodes with current; generating an image of the light-emitting device; and determining a luminous intensity of each of the light-emitting diodes with the image. An apparatus for testing a light-emitting device comprising a plurality of light-emitting diodes is also disclosed. The apparatus comprises: a current source to provide a current to drive the plurality of the light-emitting diodes; an image receiving device for receiving an image of the light-emitting device in the driven state; and a processing unit for determining a luminous intensity of each of the light-emitting diodes with the image.

Abstract: A system and method for detecting analytes using a conformal filter. A conformal filter, which may comprise a tunable filter, is configured to filter interacted photons conforming to a spectral shape correlated with an analyte of interest. Conformal filter configurations may he selected by consulting a modified look-up table associated with an analyte. An iterative methodology may be used to calibrate a conformal design for an analyte of interest, refine a previous conformal filter design for an analyte of interest, and/or generate a new conformal filter design for an analyte of interest.

Abstract: Methods for in situ detection and classification of analyte within a fluid sample are provided. In one embodiment, the method can include: (a) continuously flowing the fluid sample through a multivariate optical computing device, wherein the multivariate optical computing device illuminates an area of the fluid sample as it flows through the multivariate optical computing device to elicit a continuous series of spectral responses; (b) continuously measuring the series of multivariate spectral responses as the fluid sample flows through the multivariate optical computing device; (c) detecting an analyte (e.g., phytoplankton) in the sample based on an multivariate spectral response of the plurality of spectral responses; and (d) classifying the analyte based on the multivariate spectral response generated by the analyte.

Abstract: A spectroscopic measurement apparatus includes: a wavelength tunable interference filter including a fixed substrate having a fixed reflection film, a movable substrate having a movable reflection film, and an electrostatic actuator that changes a gap value of an inter-reflection-film gap by applying a voltage to bend the movable substrate; a detector that detects a light level; and a controller that measures a spectral characteristic of light under measurement. The controller includes a filter driver that applies a drive voltage to the electrostatic actuator to change the inter-reflection-film gap, a detected light level acquisition unit that acquires light levels detected by the detector, and a target light level acquisition unit that acquires a light level corresponding to an oscillation center of the movable substrate as a target light level based on how the detected light level transitions and a natural oscillation cycle that the movable substrate has.

Abstract: A spectrophotometer includes a fixed substrate having a fixed reflecting film, a movable substrate having a movable reflecting film, a tunable interference filter having a static actuator changing the gap distance of an inter-reflecting film gap between the fixed reflecting film and the movable reflecting film, a detecting section detecting the light intensity of a light extracted by the tunable interference filter, a voltage setting section and a voltage controlling section that apply a continuously-varying analog voltage to the static actuator, a voltage monitoring section monitoring the voltage applied to the static actuator, and a light intensity obtaining section obtaining the light intensity detected by the detecting section when the voltage monitored by the voltage monitoring section becomes a predetermined voltage to be measured.

Abstract: A sensor and system combine photo-acoustic sensing with elastic wave modulation to obtain one dimensional and two-dimensional broadband images.

Abstract: A spectroscopic measurement device includes a variable wavelength interference filter having a stationary reflecting film, a movable reflecting film, and an electrostatic actuator adapted to vary the gap amount of the inter-reflecting film gap in accordance with a voltage applied thereto, a detector adapted to detect the light intensity of the light, and a control circuit section adapted to measure the dispersion spectrum of the measurement object light, the control circuit section includes a peak detection section adapted to detect a peak-corresponding gap amount, a filter drive section that varies the gap amount to the constant interval gap amounts and the peak-corresponding gap amount in a stepwise manner, and a spectroscopic measurement section that obtains the light intensities corresponding respectively to the constant interval gap amounts and the peak-corresponding gap amount.

Abstract: An analyte measuring device (5) for monitoring, for example, levels of a tissue analyte (e.g., bilirubin), includes a number of narrow band light sources (10), each narrow band light source being structured to emit a spectrum of light covering a number of wavelengths, and a number of detector assemblies (15) configured to receive light reflected from the transcutaneous tissues of a subject. Each of the detector assemblies includes a filter (20) and a photodetector (25), each filter being structured to transmit a main transmission band and one or more transmission sidebands, wherein for each narrow band light source the spectrum thereof includes one or more wavelengths that fall within the transmission band of at least one of the filters, and wherein for each narrow band light source the spectrum thereof does not include any wavelengths that fall within the one or more transmission sidebands of any of the optical filters.

Abstract: A variable wavelength interference filter includes a first substrate having a fixed mirror, a second substrate bonded to the first substrate and having a movable portion and a movable mirror fixed to the movable portion, a third substrate bonded to the second substrate on the side opposite to the first substrate, and an electrostatic actuator which displaces the movable portion in a substrate thickness direction, wherein a penetration hole connecting a light exiting-side space between the first substrate and the second substrate and a light incident-side space between the second substrate and the third substrate to a space outside the filter is formed, and the penetration hole is sealed with a sealant which tightly closes each space in a reduced-pressure state.

Abstract: In a measuring probe (40) according to the present invention, measuring light is split into a two or more through a split optical system (12), and, when each split light is received by a light-receiving sensor (13B, 13B, 15B) through an interference filter (13A, 14A, 15A) serving as a color filter, the split light is introduced into the interference filter (13A, 14A, 15A) through a collecting lens group (123C, 14C, 15C) formed as a substantially bilateral telecentric system. The interference filter (13A, 14A, 15A) is formed to obtain a transmittance characteristic corresponding to a measurement parameter, depending on a condition of an intensity distribution with respect to incidents angles of light incident on the interference filter (13A, 14A, 15A). Thus, the measuring probe (40) according to the present invention can reduce an influence of a deviation in the transmittance characteristic due to incident angles, even using the interference filter (13A, 14A, 15A).

Abstract: A color detector includes a light source, a photodiode, and a filter tuned to only allow light of a specific color to pass through to the photodiode. When the light reaches the photodiode, the photodiode outputs a current that indicates that the color is present in the light. The filter may include a pair of partially reflective layers consisting of a reflective metal, such as silver. To prevent the metal from oxidizing or reacting with the environment, the partially reflective layers may be coated with a protective layer, such as aluminum nitride. The color detector may further include a color enhancing layer. Finally, the color detector may include a capping layer. Accordingly, the color detector provided herein allows for the filter to use metals for partially reflective layers that would normally oxidize, as well as detect light of a specific spectrum of wavelengths.

Abstract: A device measures a spectral distribution with respect to each of a plurality of color charts, sets default values to band specification data, and computes a camera output signal based on spectral sensitivity of the multiband camera and spectral feature of light from each of the plurality of charts. The device computes a candidate value of a spectral estimation parameter from the measured spectral distribution of each color chart and the computed camera output signal. The device successively varies the band specification data from the default values to make an evaluation function approach a target value, determines a spectral estimation parameter corresponding to the band specification data when the evaluation function reaches the target value. The evaluation function is defined to correlate the measured spectral distribution of each color chart to a spectral estimation value computed from the candidate value of the spectral estimation parameter and the camera output signal.

Abstract: In a particle analyzing apparatus including a capillary for passing through a fluid containing particles to be analyzed, an optical system is employed to collect fluorescent light emitted from particles or substances labeled to the particles with improved collection efficiency preserving resolution of the instrument. The optical system may include a first collection lens attached to the capillary and a first reflection element arranged adjacent to the first collection lens configured to reflect fluorescent light of one or more wavelengths. The optical system may include a second collection lens attached to the capillary and a second reflection element arranged adjacent to the second collection lens configured to reflect fluorescent light of one or more wavelengths.

Abstract: A filter set for observing fluorescent radiation in biological tissue includes at least one illumination filter and at least one observation filter. The at least one illumination filter is arrangeable in an illumination system of an optical system. The at least one least one observation filter is arrangeable in an imaging system of the optical system.

Abstract: The invention discloses a light emitting component measuring system and the method thereof which is capable of measuring the optical proprieties of a plurality of the devices under test (DUT). Each DUT is capable of receiving electricity so as to output an initial ray, wherein each initial ray has a first wavelength range. The light emitting component measuring system comprises a filtering device and a sensing device. The filtering device comprises a first filtering portion which can filter a corresponding third wavelength of the said initial rays and output a plurality of first filtered rays simultaneously. Each first filtered ray has a second wavelength range respectively. The said sensing device receives the ray outputted from the filtering device and generates an optical data accordingly.

Abstract: A system and method for determining bias in a spectrometer is described. One embodiment includes a method for determining bias in a spectrometer system, the method comprising over-scanning a grating in a near-zero-response wavelength range; and determining a bias based on the over-scanning. This methodology allows for over-scanning a grating in a near-zero-response wavelength range as a substitute for using shutters or other mechanisms to block light from entering a detector in the system.

Abstract: The present invention relates to a spectral detection device (100) for detecting spectral components of received light, wherein the spectral detection device (100) comprises a filtering structure (110) arranged to filter the received light and output light with a wavelength within a predetermined wavelength range; and a light sensor (120) arranged to detect the light output by the filtering structure (110), wherein the filtering structure (110) is variable to allow a variation of the predetermined wavelength range over time. The arrangement enables a compact spectral detection device that may be provided at a low cost.

Abstract: The invention provides a method for stabilising a spectrometric transducer for an optical spectrum measuring instrument by obtaining an instantaneous central wavelength of a thermally controlled tunable filter of the instrument, calibrating for a selected ambient temperature, determining a heat variance of the filter and controlling the filter to compensate for heat variance

Abstract: A system and method for spatial imaging and imaging spectroscopy system includes a sample holder for holding samples, an illumination system arranged to illuminate the samples, a wavelength isolation module configured to selectively isolate received illumination from the samples to a plurality wavelengths, a single matrix imaging device arranged to receive the isolated wavelengths from the wavelength isolation module through a single lens system, and a computing device configured to perform a spatial imaging and imaging spectroscopy process. The spatial imaging and imaging spectroscopy process includes acquiring image data corresponding to each of the isolated wavelengths, performing spatial imaging analysis based on the acquired image data, and performing imaging spectroscopy on the acquired image data.

Abstract: A color measurement device includes an aperture for obtaining light from a color sample to be measured; a plurality of sets of color filters associated with human observer functions at different regions of color space; at least one detector for measuring the intensity of filtered light; an analog to digital converter for converting voltage signals from the at least one detector to digital values representative of tristimulus values associated with each of the sets of color filters; and a processor to combine the sets of tristimulus values in order to calculate a final set of tristimulus values, the combining being a function of at least one of the sets of tristimulus values.

Abstract: The invention describes a light sensor (1) comprising a filter arrangement (11), which filter arrangement (11) comprises a number of spectral filters (F1, F2, . . . , Fn) for filtering incident light (L), wherein a spectral filter (F1, F2, . . . , Fn) is realized to pass a distinct component of the incident light (L), an aperture arrangement (12) for admitting a fraction of the incident light (L), and a sensor arrangement (13) realized to collect the admitted filtered light (L?), which sensor arrangement (13) comprises an array of sensor elements (130) for generating image-related signals (S, S1, S2, . . . , Sn) and which sensor array is sub-divided into a number of regions (R1, R2, . . . , Rn), wherein a region (R1, R2, . . . , Rn) of the sensor array is allocated to a corresponding spectral filter (Fi, F2, . . . , Fn) such that an image-related signal (S) generated by a sensor element (130) of a particular region (R1, R2, . . .

Abstract: A wavelength-variable interference filter includes first and second electrodes provided at first and second substrates, respectively, the second substrate including a movable section, first and second electrode wires that extend from the first and second electrodes toward outer circumferential edges of the first and second substrates, respectively, a first opposite electrode wire disposed so as to be isolated from the second electrode, and a first conductive section that connects the first electrode wire with the first opposite electrode wire. The second electrode wire and the first opposite electrode wire extend passing through a center point of an imaginary circle of the movable section in respective directions and dividing the imaginary circle at regular angular intervals.

Abstract: An optical unit is provided with a filter member (1) that disperses transmitted light and a photodetector (2) that has a plurality of light receiving elements. The filter member (1) is provided with a light transmissive substrate, a plurality of protrusions comprising a first metallic material and formed on one surface of the substrate, and a metal film comprising a second metallic material having a refractive index higher than that of the first metallic material and formed so as to cover the plurality of protrusions as well as the one surface of the substrate. The plurality of protrusions is disposed such that the metal film located between adjacent protrusions can be a diffraction grating and the protrusions can be waveguides. At least one of the grating cycle of the diffraction grating, the height of the protrusions, or the thickness of the metal film is set to a value different each portion such that a wavelength of light transmitted through the filter member changes each portion.

Abstract: An observation device observing a sample cultured in a culture vessel includes an illuminating unit including an illumination optical system and illuminating the sample, an image-capturing unit including an imaging sensor and generating an image by capturing an image of the sample illuminated by the illuminating unit, and a wavelength limiting filter being placed on an optical axis of the illumination optical system and between the illuminating unit and the image-capturing unit, and limiting a part of wavelengths of an illumination light from the illumination optical system in accordance with optical absorption properties of an additive contained in a culture medium used for culturing the sample. Accordingly, it is possible to suppress a change of the image resulting from the additive and to enable to generate an appropriate image in an automatic observation.

Abstract: An optical analysis system and method for determining information carried by light include a multivariate optical element disposed in the system to receive a source light from an illumination source; filtering the source light through a spectral element in the optical element analysis system; reflecting the filtered light through an inner region of a cavity in a first direction of a sample to be measured, the cavity defining a second region disposed about the inner region; focusing the reflected light proximate the sample; reflecting the focused light from the sample through the second region in a second direction of a beamsplitter, the light being reflected from the sample carrying data from the sample; splitting the sample carrying light with the beamsplitter into a first light and a second light; optically filtering the data of the first light with the multivariate optical element into an orthogonal component; directing the first light filtered by the multivariate optical element onto a first photodetector