Optical mice use image sensors to image naturally occurring texture in materials such as wood, cloth, mouse pads and Formica.

Optical mice capture one thousand successive images or more per second.

Optical mice often use LEDs for illumination, even though they are sometimes colloquially referred to as ' lasers '.

Optical mice utilizing infrared elements ( LEDs or lasers ) offer substantial increases in battery life.

Optical models outperform mechanical mice on uneven, slick, soft, sticky, or loose surfaces, and generally in mobile situations lacking mouse pads.

# REDIRECT Optical mouse # Laser mice

To learn more about the process of exposure and development of positive resist, see Ralph Dammel, " Diazonaphtoquinone-based resists ", SPIE Optical Engineering Press, Vol TT11 ( 1993 ).

* Optical pumping, a process in which light is used to raise electrons from a lower energy level in an atom or molecule to a higher one

Optical effects ( also called photographic effects ), are techniques in which images or film frames are created photographically, either " in-camera " using multiple exposure, mattes, or the Schüfftan process, or in post-production processes using an optical printer.

The Court sounded the death knell for economic substantive due process several years later in Williamson v. Lee Optical of Oklahoma ( 1955 ).

Optical disc authoring, including DVD and Blu-ray Disc authoring ( often referred to colloquially as burning ), is the process of assembling source material — video, audio or other data — into the proper logical volume format to then be recorded (" burned ") onto an optical disc ( typically a compact disc or DVD ).

Optical mark recognition ( also called optical mark reading and OMR ) is the process of capturing human-marked data from document forms such as surveys and tests.

Optical discs, however, are almost exclusively used in the large-scale distribution of retail software, music and movies because of the cost and manufacturing efficiency of the molding process used to produce DVD and compact discs and the nearly-universal presence of reader drives in personal computers and consumer appliances.

Optical working typically involves a degree of randomness that helps greatly in preserving figure-of-revolution surfaces, provided the part is not flexing during the grind / polish process.

The result was the Todd-AO process, designed by the American Optical Company.

The May 10, 2010 synchronize elections had created an abrupt change in the history of electoral process in the nation because of the use of Precinct Count Optical Scan ( PCOS ) machine.

( 1955 ) was filmed using the Todd-AO process which was developed by the American Optical Company in Buffalo, New York, where Deutsch got his start.

Optical coatings, protective and decorative coatings, and electro-optic components can be applied to glass, metal and other types of substrates with these methods.

Optical traps allowed these biophysicists to observe the forces and dynamics of nanoscale motors at the single-molecule level ; optical trap force-spectroscopy has since led to greater understanding of the stochastic nature of these force-generating molecules.

Optical gain measurements conducted in these materials also show values comparable to single crystal, supporting the contention that these materials could be suitable substitutes to single crystals in solid-state laser applications.

Optical properties of the materials used for these applications are critical, as the transmission window and related cut-offs ( UV – IR ) control the spectral bandwidth over which the window is operational.

Optical nanocomposites may provide the opportunity to engineer new materials that may overcome these traditional limitations.

Optical correction in these patients without intraocular lens ( aphakic ) is usually managed with either special contact lenses or glasses.

Industry proposed requirements for these components are detailed in GR-1209, Generic Requirements for Passive Optical Components.

* Optical character recognition, conversion of images of text into characters

Optical ray tracing describes a method for producing visual images constructed in 3D computer graphics environments, with more photorealism than either ray casting or scanline rendering techniques.

Optical character recognition, usually abbreviated to OCR, is the mechanical or electronic conversion of scanned images of handwritten, typewritten or printed text into machine-encoded text.

Optical see-through employs half-silver mirrors to pass images through the lens and overlay information to be reflected into the user's eyes.

Optical images reveal clouds of gas and dust in the Orion Nebula ; an infrared image ( right ) reveals the new stars shining within.

IRAF ( an acronym for Image Reduction and Analysis Facility ) is a collection of software written at the National Optical Astronomy Observatory ( NOAO ) geared towards the reduction of astronomical images in pixel array form.

Optical Coherence Tomography, or ‘ OCT ’, is a technique for obtaining sub-surface images of translucent or opaque materials at a resolution equivalent to a low-power microscope.

* OIG (" Optical Imager Galileo "), CCD camera dedicated to optical images at high resolution ;

COAST, the Cambridge Optical Aperture Synthesis Telescope, is a multi-element optical astronomical interferometer with baselines of up to 100 metres, which uses aperture synthesis to observe stars with angular resolution as high as one thousandth of one arcsecond ( producing images with much higher resolution than can be obtained using individual telescopes such as the Hubble Space Telescope ).

The telescope hosts three instruments: the 67-million pixel Wide Field Imager with a field of view as large as the full Moon, which has taken many amazing images of celestial objects ; GROND, the Gamma-Ray Burst Optical / Near-Infrared Detector, which chases the afterglows of the most powerful explosions in the Universe, known as gamma-ray bursts ; and the high-resolution spectrograph, FEROS, used to make detailed studies of stars.

Optical techniques may be used to present the images at a distant focus, which seems to improve the realism of images that in the real world would be at a distance.

It also features an OCR ( Optical character recognition ) facility which allows the user to extract the text from objects such as images, to use elsewhere in a text format.

Optical interferometers are extremely complex, unfilled aperture photon-collecting telescopes in the visual ( sometimes the near infrared, too ), which produce synthesized images and fringe data " on the fly " ( unlike radio interferometers which are privileged to record the data for later synthesis ), essentially by taking an inverse Fourier transform of the incoming data.

Optical images were taken of GRB 970228's position on 1 and 8 March using the William Herschel Telescope and the Isaac Newton Telescope.

Optical attachments can be added to traditional 35mm projectors to adapt them for projecting film in the " over-and-under " format, in which each pair of images is stacked within one frame of film.

In 1995, using Optical Luminescence Dating, David Miles and Simon Palmer of the Oxford Archaeological Unit assigned the Uffington White Horse to the late Bronze Age.

* Optical parametric oscillation ( OPO ), generation of a signal and idler wave using a parametric amplifier in a resonator ( with no signal input )

* Optical parametric generation ( OPG ), like parametric oscillation but without a resonator, using a very high gain instead

Optical lithography has been extended to feature sizes below 50 nm using the 193 nm ArF excimer laser and liquid immersion techniques.

* Cure monitoring of composites using Optical fibers

Synchronous Optical Networking ( SONET ) and Synchronous Digital Hierarchy ( SDH ) are standardized protocols that transfer multiple digital bit streams over optical fiber using lasers or highly coherent light from light-emitting diodes ( LEDs ).

By using a noncollinear interaction geometry Optical Parametric Amplifiers are capable of extremely broad amplification bandwidths.

It was detected using the radial velocity method, based upon measurements made between 2003 and 2010 at the Bohyunsan Optical Astronomy Observatory in Korea.

As a research scientist, his principle duties included conducting scientific studies of the Sun and other celestial objects using advanced space instruments and serving as a co-investigator on one of the Spacelab 2 solar experiments, the Solar Optical Universal Polarimeter.

In 2011, light echoes from the 19th century Great Eruption of η Carinae were detected using the U. S. National Optical Astronomy Observatory's Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory.

Optical perception: Frisch was to first to demonstrate that honey bees had color vision, which he accomplished by using classical conditioning.

** Optical proximity correction, OPC – up-front compensation for diffraction and interference effects occurring later when chip is manufactured using this mask.

Optical sensing was developed in 1935, and patented in Great Britain in 1936, by a Swedish inventor, probably Edward W. Brandt, using a petoscope.

Most MANs now use Synchronous Optical Network ( SONET ) or Asynchronous Transfer Mode ( ATM ) network designs, with recent designs using native Ethernet or MPLS.

* A. Ashkin, " Optical trapping and manipulation of neutral particles using lasers "

* Single molecule studies using Optical Tweezers & TIRF microscopy

* Optical coherence tomography an imaging technology using light

* ISO / IEC 17344: 2005, Data interchange on 120 mm and 80 mm Optical Disc using + R format-technical specification

In 1952 Asahi Optical introduced its first camera, the Asahiflex ( the first Japanese SLR using 35mm film ).

* Optical systems using plane gratings

* Optical systems using concave gratings

Optical filters, tunable for differing wavelengths by varying the magnetic field can be built using ferrofluid emulsion.