Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7468796 | Multiple-color monochromatic light absorption and quantification of light absorption in a stained sample An absorption detection system is provided. The system includes a plurality of monochromatic light sources and a separator for separating the light from the plurality of monochromatic light sources into a plurality of wavelengths. A plurality of detectors, receives ... | 12/23/2008 |
| 7414724 | Light diffuser used in a testing apparatus An apparatus for photometrically testing several specimens each irradiated by a light source, the light altered by the specimens being detected by an optical device and analyzed, the apparatus including a light source, a plurality of sample holders configured adjace... | 08/19/2008 |
| 7358476 | Sensing photons from objects in channels A fluidic structure includes a channel and along the channel is a series of sensing components to obtain information about objects traveling within the channel, such as droplets or other objects carried by fluid. At least one sensing component includes a set of cell... | 04/15/2008 |
| 7291824 | Photosensing throughout energy range and in subranges An integrated circuit (IC) includes a photosensor array, some cells of which are reference cells that photosense throughout an application's energy range, while other cells of which are subrange cells that photosense within respective subranges. For example, the sub... | 11/06/2007 |
| 7280201 | Sensor having integrated light detector and/or light source A sensor, such as a lateral flow sensor, which includes a chemical layer and a detector on a flexible substrate. An optical signal is produced in response to an analyte placed on the chemical layer. The detector detects the signal, to thereby detect the presence, ab... | 10/09/2007 |
| 7254490 | Marking system and method A methodology for facilitating the identification, authentication or quality control of packaged products is described comprising a marking and an authentication phase. In the marking phase the method involves obtaining an analytical specification, and for example a... | 08/07/2007 |
| 7218656 | Control of spectral content of a laser diode light source In one exemplary embodiment, apparatus is provided with a plurality of laser diodes, sensing means and control means. During normal operation, the laser diodes produce a mixed light. The sensing means measures light that is output by the laser diodes; and the contro... | 05/15/2007 |
| 7034943 | Gas sensors The present invention relates to a device for accomplishing noise reduction in a photoacoustic gas detector using a sound damping element and/or a background or reference microphone where a preferably larger external volume that acts as a sound damping element (SDE)... | 04/25/2006 |
| 6995386 | Fluorescence detecting device with integrated circuit and photodiode, and detection method A fluorescence detecting device is configured so that a semiconductor integrated circuit substrate includes a photodiode and a signal detecting circuit for detecting charges obtained as a result of photoelectric conversion by the photodiode, and a fluorescence react... | 02/07/2006 |
| 6657718 | Measuring cell for liquids A liquid measuring cell for measuring optical properties of liquids, with a measuring chamber (16), which is adjoined on one side by a transparent window (11), and with a reflector (30) disposed on the opposite side of the measuring chamber (16), which re... | 12/02/2003 |
| 6486957 | Replaceable filter module An instrument for processing light information to assay chemical or biological molecules is made more flexible by the use of a replaceable filter module. Several light filters, or in one embodiment dichroic mirrors, are mounted in a common module in fixed... | 11/26/2002 |
| 6398914 | Method and device for process control in cellulose and paper manufacture In the production of de-inked pulp, measuring devices are used to register spectral and/or physical characteristic values of a starting material. These values are then fed to a neural network, by means of which correction variables are obtained for a regu... | 06/04/2002 |
| 6362887 | Device for measuring changes in parameters within transparent objects A device is described for measuring changes in parameters in transparent objects, in particular for medical applications. For universal use in various applications, the device includes a light source, an optical line sensor which detects the intensity of ... | 03/26/2002 |
| 6061141 | Method and system for detecting gases or vapors in a monitored area A method of detecting the presence of a predetermined vapor of a predetermined concentration in a monitored area, the method including the steps of (a) exposing gas in or from the monitored area to radiation at wavelengths at least covering and surroundin... | 05/09/2000 |
| 6057912 | Method for Blackbody lamp reference compensation using a single silicon photodiode A method to compensate for lamp spectrum shift, comprises exposing a first detector to a first light from a lamp, thereby generating a first signal indicative of intensity of said first light; exposing a second detector to a wavelength (λ) of a second li... | 05/02/2000 |
| 5825478 | Multifunctional photometer apparatus A photometer for measuring electromagnetic radiation absorption of a sample utilizing a source of the electromagnetic radiation. Electromagnetic radiation is conducted from the source, to a sample sensor or sensors, and is passed through or scattered from... | 10/20/1998 |
| 5745243 | Photometer apparatus A photometer for measuring electromagnetic radiation absorption of a sample utilizing a source of the electromagnetic radiation. Electromagnetic radiation is conducted from the source, to a sample sensor, and is passed through the sample utilizing a sampl... | 04/28/1998 |
| 5699156 | Spectrophotometer apparatus with dual light sources and optical paths, fiber optic pick-up and sample cell therefor A spectrophotometer employs an array of optical elements to focus light from at least one, but preferably two light sources onto a fiber optic beam splitter that provides a pickup for a selected bandwidth of wavelengths of light in the spectral pattern. T... | 12/16/1997 |
| 5682038 | Fluorescent-particle analyzer with timing alignment for analog pulse subtraction of fluorescent pulses arising from different excitation locations A flow cytometry system includes a flow tube through which particles marked with different fluorochromes pass from a first location, illuminated by a red laser, to a second location, illuminated by a blue laser. A "red" photodetector is optically coupled ... | 10/28/1997 |
| 5661558 | Optical detector for flowing sample and optical detection method for flowing sample An optical detector for flowing sample comprises a light condenser for condensing a diverging monochrome light, a flow cell arranged in the course of convergence of the converged light beam, and a sample-side detector for receiving a sample-side light. Su... | 08/26/1997 |
| 5526122 | Method for determining the mass flow of gases on the basis of optical absorption and employment of said method In the method, the totality of the gases is conducted through an absorption cell. A reference cell contains a reference gas. The cells are optically transirradiated and a signal representing a quantity for the mass flow to be identified is generated in a ... | 06/11/1996 |
| 5483057 | Glass color sensor unit Apparatus for measuring the color of glass, particularly pieces of broken glass relies upon simultaneously measuring the glass transmission in different spectral regions. The glass pieces travel along a conveying path between a light source and a light se... | 01/09/1996 |
| 5483334 | System for generating the same instantaneous pressure between two tanks The present invention relates to a system for generating the same instantaneous pressure between two tanks filled each with a given medium, the first tank including at least one inlet channel and at least one outlet channel for the given medium, the secon... | 01/09/1996 |
| 5432096 | Simultaneous multiple, single wavelength electromagnetic wave energy absorbtion detection and quantifying spectrophotometric system, and method of use Spectrophotometric sample analysis systems, and methods of their use, capable of "simultaneously" detecting, quantifying, displaying and/or recording energy absorption factors, and ratios of various energy absorbtion factors, regarding a multiplicity of s... | 07/11/1995 |
| 5423513 | Method of and a capillary flow cell for analysing fluid samples A method of analyzing fluid samples using a bent capillary flow cell, in which method an external UV/visible light ray beam is directed into an elongated section of the flow cell from a bend thereof, this incident light ray beam is limited to a solid acce... | 06/13/1995 |
| 5418614 | Optical photometry system for on-line analysis of fluid systems The present invention concerns a new optical photometry system for on-line analysis of industrial fluid streams. The invention is a general purpose optical photometer, capable of absorption, fluorescence and reflectance measurements at single wavelengths ... | 05/23/1995 |
| 5307146 | Dual-wavelength photometer and fiber optic sensor probe A dual wavelength optical sensor for measuring chemical properties of a particular quantity, the optical sensor including a sensor probe having a thin sensing film whose optical characteristics are responsive to the chemical properties of the measured qua... | 04/26/1994 |
| 5274227 | Capillary detector cell having imaging elements positioned to optimize sensitivity A detector cell, having a capillary entrance elbow through which a beam of exposing light can be directed into the bore of a central leg of the detector cell capillary. Ray traces, to determine the effect of the entrance elbow on the beam of exposing ligh... | 12/28/1993 |
| 5272090 | Sensor element for determining the amount of oxygen dissolved in a sample A method and apparatus are described for an accurate determination of the concentration of a gas, vapor or a gas dissolved in a sample which compensate for variations in temperature and light - source intensity. The apparatus comprises a sensor containing... | 12/21/1993 |
| 5124130 | Optical probe Method for making a probe with a plurality (one or more) of optical fiber sensors containing colorimetric chemical indicators in gaps in the fibers, the fibers bent to provide good light transmission qualities. Apparatus for making a probe with a pluralit... | 06/23/1992 |
| 5121164 | Method for maintaining a liquid composition A method for maintaining a preselected concentrations of first and second charge directors in a toner composition, where such composition is being subjected to a use in which initial concentrations of the first and second charge directors are being deplet... | 06/09/1992 |
| 5073345 | Light detector apparatus A light absorption detector includes a light source substantially adjacent a window of a chromatogrpahic flow cell. The flow cell is defined by a housing member which also includes a photo-sensitive detector.... | 12/17/1991 |
| 5002397 | System of fluid inspection and/or identification A Method and Apparatus for identifying and distinguishing fluids and for recognizing contamination of a fluid, which method and apparatus utilizes spectrographic analysis of control samples of known fluids and then spectrographic analysis of unknown fluid... | 03/26/1991 |
| 4998824 | System of fluid inspection and/or identification A method and apparatus for identifying and distinguishing fluids and for recognizing contamination of a fluid, which method and apparatus utilizes spectrographic analysis of control samples of known fluids and then spectrographic analysis of unknown fluid... | 03/12/1991 |
| 4900152 | Apparatus for measuring foreign substance content in a flowing liquid In an apparatus for determining the concentration of foreign matter in a water stream, a stream of liquid is bypassed through conduits both before and after the pipeline block for the process and each stream is pumped into a cell, a beam source being asso... | 02/13/1990 |
| 4878756 | Method and apparatus for sensing color A color detecting apparatus and process in which light from a source is directed to a surface whose color is to be measured through an aspheric lens situated so that reflected radiation is returned to the aspheric lens along a reversely directed path. The... | 11/07/1989 |
| 4822168 | Spectroscopic photometer for flow through sample absorption An analyzing apparatus provided with a spectroscopic photometer, in which light emitted by a deuterium lamp enters a flow cell; light transmitted by the flow cell is divided into two light beams by means of a beam splitter, one of which is received by a d... | 04/18/1989 |
| 4726680 | Absorbance monitor To reduce noise in an absorbance monitor in which the light source is a deuterium lamp, an aspheric condensing mirror focuses light from an approximately 0.6 mm-high by 2 mm-wide part of the central bright spot in the deuterium lamp through a slit in an a... | 02/23/1988 |
| 4637730 | Optical and electronically compared absorptiometer This invention relates to an optical absorptiometer which is characterized by a light source unit of a broad wavelength having a source of constant energy which is collimated into two light beams, one of which is transmitted through the liquid to be measu... | 01/20/1987 |
| 4601582 | Spectrophotometer A spectrophotometer is shown in which a deuterium lamp emits a plurality of frequencies of interest the beam passes through a filter for selecting the wavelength of the light desired to be incident onto the sample and then onto a beam splitting plate whic... | 07/22/1986 |
