There is also a powerful LED light surrounding the lens for adding light to close up shots.
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Instead of having spectacles with a crude red filter for one eye and green for the other, the Real D system relies on circularly polarised light with one lens polarising the light to the left, and the other to the right.
Driven by Lumus' patented Light-guide Optical Element, a micro-display pod, and the Optical Engine which projects light into the lens -- where it is reflected back to the user's eye via reflectors embedded in the lens -- the Lumus' DK-32 delivers a bright 720p 3D-capable display that only weighs 27 grams.
The secret is in the imaging chip that records the light coming through the lens.
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Light entering through a lens is focused through an aperture and exposure is controlled by a shutter.
Then your doctor uses a thin tube equipped with a camera lens and light (laparoscope) to view the area.
In a conventional optical system, light rays enter through a lens and converge at a point to form an image.
The light, compact 3x zoom lens covers a frequently-used range of focal lengths from wide-angle 18mm to standard 55mm (35mm camera equivalent range: 27-82.5mm).
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For that to work, each lens must respond to light coming from only one direction.
Astronomers are able to detect planets orbiting the lens star if the light from the background star is warped by one or more planets.
The technique employed to find the new planet uses the gravitational field of a star like a lens - magnifying the light from a distant background star.
Optical correlators, meanwhile, work by encoding images on to a beam of light and, using a special lens, transforming them into their Fourier components building-blocks that encode the thickness and direction of lines in the image, but not their position.
With a built-in Fujinon wide angle 23x zoom lens, superior low-light performance, and excellent sensitivity (F11 at 2000 lux), the GY-HM650 has ideal optics for challenging shooting environments.
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This hybrid system guarantees the photographer sharp, blur-free images even under demanding shooting conditions prone to camera shake, such as when using a telephoto lens, shooting with incident light in poorly lit locations, or photographing sunset scenes.
This hybrid system assures the photographer of sharp, blur-free images and video even under demanding, camera-shake-prone shooting conditions, such as when using a telephoto lens, shooting with incident light in poorly lit locations, or photographing sunset scenes.
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Then he discovered a new Japanese method of cutting diamonds: When viewed under a low-magnification (3x) lens, the stone refracted light in such a way as to give off a pattern of eight heart-shaped sparkles at the bottom of the diamond and eight arrow-shaped fire-bursts through the top--hence the name "hearts-and-arrows" diamonds.
At F2.8-4 wide open, this fast lens is perfect for low-light photography or scenes beckoning a beautiful bokeh effect.
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And with its bright, F2.8 aperture, the lens performs beautifully in low-light shooting.
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As the light rays pass through this odd-shaped lens, they are distorted.
The mirror-less camera builds on its forbears, phasing out the mirror-based optical viewfinder of the SLR camera and adding an interchangeable lens mount, while keeping the light-weight feel of the compact camera.
The liquid acts as an additional lens, narrowing the beam of light just as a telescope turns what looks to the naked eye like a smudge on the horizon into a crisp image.
As a result, the PENTAX Q10 produces sharp, blur-free images even under demanding conditions that are prone to camera shake, such as use with a telephoto lens or shooting in low-light without flash.
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When a beam of light is focused by the cornea and the lens, at the front of the eye, on to the retina, at the back, it stimulates photosensitive cells known as rods and cones.
The lens inside the device picks up the light from the camera's screen.
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Jazz composer Guillermo Klein uses filters the way a photographer uses lens filters: Only certain frequencies of light are allowed to pass.
That may sound impossible, but it apparently works by concentrating the extra light-gathering area of a full-frame lens down to the smaller E-mount sensor area, turning an f4.0 lens into an f2.8 lens, for instance.
Despite the 22x zoom lens, the camera was very thin and light -- it should be able to tuck into a pocket just fine.
To safeguard close-range installations, the W1080ST features an "Auto Blank" mode that blocks light output when objects are detected in front of the lens.
Pyron uses an acrylic concentrating lens, which focuses the equivalent of the light from 6, 500 suns on a small optical device, which then spreads it across the surface of the solar cell.
However, because the light from any planet orbiting a star at which the lens is aimed directly is arriving from a point slightly to the side of that star, it is able to shine through essentially unaltered.
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