Latest Geometrical optics Stories

Tiny Camera Gives Big Picture View Without Sacrificing High-resolution
2013-09-25 09:34:47

The Optical Society New system could be used to build a camera that pans and zooms with no moving parts To capture all the details of a crime scene, you might take many photos at close range. To get the whole scene at once, you could use a wide-angle or fisheye lens; but without an especially large lens you would be sacrificing the fine resolution that would help you catch that partial footprint you might otherwise have missed. Now a new type of miniature camera system promises to give...

Wavefront Optics Can Help You See Better
2013-08-27 17:44:13

Brett Smith for redOrbit.com – Your Universe Online Astronomers have developed groundbreaking optical techniques to bring distant stars into focus and this same technology is now being appropriated by eye care professionals to improve their analysis and corrective methods. According to a recently published review in the journal Optometry and Vision Science by Indiana University optometrist Larry N. Thibos, the concept of ‘wavefront optics’ is transforming how vision professionals...

New Lenses For Nanoscale Light Beams Are Tiny Liquid Bubbles
2013-08-09 12:43:10

Penn State Bending light beams to your whim sounds like a job for a wizard or an a complex array of bulky mirrors, lenses and prisms, but a few tiny liquid bubbles may be all that is necessary to open the doors for next-generation, high-speed circuits and displays, according to Penn State researchers. To combine the speed of optical communication with the portability of electronic circuitry, researchers use nanoplasmonics -- devices that use short electromagnetic waves to modulate light...

2013-06-27 23:03:10

Eye Excellence is now providing Houston cataract patients with the recently released Trulign™ Toric Lens IOL. Houston, Texas (PRWEB) June 27, 2013 The first accommodating Intraocular Lens (IOL) that also corrects astigmatism is available for cataract patients in Houston at Eye Excellence. Shortly after being approved by the FDA May 2013, Mary Green, Ph.D, M.D., director of Eye Excellence, decided to be one of the first institutions in Houston to carry the revolutionary new Trulign™...

2013-05-09 23:30:44

Loden Vision Centers First in Tennessee & One of First in U.S. to Use This Technolgy. NASHVILLE, TN (PRWEB) May 09, 2013 Loden Vision Centers, Tennessee´s innovator in eye care, is the first ophthalmology practice in Tennessee and one of the first in the entire United States to offer cataract patients FDA-approved TECNIS® Toric Intraocular Lens. This 1-Piece intraocular lens (IOL) has received FDA approval for treatment of cataract patients with pre-existing corneal...

Latest Geometrical optics Reference Libraries

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...

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
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'