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telescope Features
Flat Surface Lens Overcomes Limitations of Conventional Optics
The telescope has been used for more than 400 years. Although there have been many designs created for looking at distant objects, there is a fundamental weakness with the lens system. By necessity, telescopes use curved lenses — which are prone to aberrations. For the first time, a novel flat surface lens system offers the potential for better resolution from a significantly more compact size. The flat lens system gathers about 27 percent more light than a comparably sized curved
Photonics Spectra, August 2017
New Approaches Improve Beam Expansion
Afocal beam expansion systems based on the basic principles of Kepler and Galileo telescopes can be improved in terms of wavefront quality by using additional optical surfaces or aspherizing them using monolithic beam expansion elements. Everyday...
Photonics Spectra, March 2014
Lasers Find Varied Uses in Space Applications
From the first laser fired on another planet to observatory guide stars and space collision avoidance systems, lasers in space are making news with numerous advances and universal firsts (as far as we know). With the beginning of the Laser Lunar...
Photonics Spectra, November 2012
Telescopes Require Polishing to Perfection
As astronomy projects look deeper into space, polishing the optics becomes more and more critical. This past summer, there was a go-ahead to go big. The European Southern Observatory member states declared support for the billion-plus-euro ($1.3...
Photonics Spectra, November 2012
Property Management: A Review of Optical Materials
Optical materials are as old as the natural quartz and obsidian crystals early civilizations used to change the way people saw the world. Artificial materials came later, with mirrors and other optics produced following the growth of art glass in...
Photonics Spectra, September 2011
SQUARE Fibers Solve Multiple Application Challenges
A square-core optical fiber makes a better match with laser diode output beams, allowing greater coupling efficiency. Square-core fibers also offer advantages over circular fibers in applications such as spectroscopy and laser machining, where...
Photonics Spectra, February 2011
Near-Infrared Bandpass Filters for Astronomy
Near-infrared filters operate within a wavelength range of 800 to 5000 nm and typically consist of multiple thin-film interference layers of silicon/ silicon compounds deposited on a suitable optical substrate. They can be manufactured in narrow-...
Photonics.com, August 2010
New Technologies Power New Eyes
on the Sky
A science that studies exploding stars is itself exploding. Over the next decade, astronomers will more than double the cumulative worldwide telescope mirror area, survey the sky as never before while looking for killer asteroids, resolve objects...
Photonics Spectra, July 2008
New South Pole Telescope Seeks Neutrinos in Ice
A telescope under construction at the South Pole will be employed to study the high-energy subatomic particles known as neutrinos. IceCube, as the telescope is called, will consist of up to 4800 basketball-size instruments spread throughout 1 km3 of...
Photonics Spectra, April 2005
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March 2024
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