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Latest Geometrical optics Stories

2011-09-27 09:34:11

University of Texas at Austin researchers have discovered how to extract and use information in an individual image to determine how far objects are from the focus distance, a feat only accomplished by human and animal visual systems until now. Like a camera, the human eye has an auto-focusing system, but human auto-focusing rarely makes mistakes. And unlike a camera, humans do not require trial and error to focus an object. Johannes Burge, a postdoctoral fellow in the College of...

Researchers Create Bizarre Optical Phenomena
2011-09-02 09:53:34

  Defying the laws of reflection and refraction Exploiting a novel technique called phase discontinuity, researchers at the Harvard School of Engineering and Applied Sciences (SEAS) have induced light rays to behave in a way that defies the centuries-old laws of reflection and refraction. The discovery, published this week in Science, has led to a reformulation of the mathematical laws that predict the path of a ray of light bouncing off a surface or traveling from one medium...

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2011-05-20 13:08:17

Suspicion of melanoma: In the future, doctors can pull out a new type of microscope to get to the bottom of suspicious changes in the skin. It provides a high-resolution image of skin areas of any size "“ and so quickly that you can hold it in your hand without blurring the resulting picture.Are the dark spots on a patient's skin malignant? In the future, doctors will be able to take a closer look at suspicious blemishes using a new microscope "“ with results in just a few...

2011-03-15 08:00:00

MOUNTAIN VIEW, Calif., March 15, 2011 /PRNewswire/ -- Synopsys, Inc. (Nasdaq: SNPS), a world leader in software and IP for semiconductor design, verification and manufacturing, today announced the availability of enhancements to its CODE V® optical design and analysis software. CODE V 10.3 delivers new design and analysis capabilities that enable optical designers to more easily take advantage of the unique image quality and cost benefits that aspheres offer....

2011-01-16 00:23:38

GetLenses, the UK's largest online contact lens supplier, has offered a free contact lens trial to the losing Australian Cricket team following their loss of the Ashes series to England. (Vocus/PRWEB) January 14, 2011 GetLenses, the UK's largest online contact lens supplier, has caused a few chuckles with its offer of a free contact lens trial for the Australian cricket team. The offer, made in a light hearted way by during the Christmas period was picked up by a number of newspapers,...

2010-12-13 07:00:00

ROANOKE, Va., Dec. 13, 2010 /PRNewswire/ -- PixelOptics (Pixel) of Roanoke, Virginia USA announced today that Panasonic Healthcare Co., Ltd. of Ehime, Japan (Panasonic) will manufacture electronic lenses for PixelOptics' electronic focusing eyeglasses named emPower!(TM). The emPower! eyeglasses focus faster than the blink of an eye, have no moving parts, and change focus without making a sound. In March of 2010 at Vision Expo East in New York, New York, Pixel and Panasonic announced that...

2010-07-26 19:00:00

LOS ANGELES, July 26 /PRNewswire/ -- SIGGRAPH 2010 -- Caustic Graphics®, the leader in accelerated ray tracing, today introduced Brazil for Developers(TM) -- a real-time, fully interactive renderer for a wide range of 3D graphics applications. For the first time, developers will be able to incorporate the look and photorealism of Brazil directly into their 3D graphics applications, with the tremendous enhancement of real-time, interactive scene manipulation. The Brazil...

2010-04-13 17:32:00

ST. LOUIS, April 13 /PRNewswire/ -- A newly introduced Contact Lens Care Kit is now available at Target stores nationwide for $11.99. The Care Kit includes LensAlert®, the first ever (patented) contact lens and case reminder timer, 3 colorful contact lens cases, and easy to understand lens care tips. "The greatest damn lens care invention in the last 20 years" 80% of all contact lens complications are traced back to poor patient compliance. Most contact lens wearers...

2010-01-19 18:18:35

Unmanned aerial vehicles UAVs deployed on landscape analysis missions carry optical measuring equipment that is required to operate free of chromatic aberration. Researchers have now designed an all-reflective zoom objective with deformable mirrors. A small unmanned aerial vehicle (UAV) circles above the ground, capturing the typical green of a coniferous forest or the radiated heat from a town. The objectives in its on-board measuring equipment must function free of chromatic aberration...


Latest Geometrical optics Reference Libraries

45_d1e42be1d02b86de582358c7ab315da5
2010-09-16 15:48:43

A magnifying glass is a convex lens, usually mounted in a frame with a handle, which is used to produce a magnified image of an object. The glass works by creating a magnified virtual image of an object behind the lens. However, the distance between the lens and the object must be shorter than the focal length for the glass to work. If the distance is not correct then the image will appear small and inverted. Many magnifying glasses are mounted on a stand to insure the proper distance...

7_152e02a5c30619830f270e3091ec38522
2004-10-19 04:45:43

Parabolic Mirror -- A parabolic reflector or parabolic dish is a reflective device formed in the shape of a paraboloid of revolution. Parabolic reflectors can either collect or distribute energy such as light, sound, or radio waves. The parabolic reflector functions due to the geometric properties of the paraboloid shape: if the angle of incidence to the inner surface of the collector equals the angle of reflection, then any incoming ray that is parallel to the axis of the dish will be...

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Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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