Examples of 'fresnel lenses' in a sentence
Meaning of "fresnel lenses"
fresnel lenses - Optical lenses that use a series of concentric grooves or rings to achieve a large aperture and short focal length, commonly used in lighthouses, visual effects, photography, and other applications requiring compact and lightweight lens designs
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- plural of Fresnel lens
How to use "fresnel lenses" in a sentence
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fresnel lenses
Fresnel lenses have also been used in the field of popular entertainment.
The lenses may appear similar to the fresnel lenses used in overhead projectors.
Fresnel lenses weighed roughly five to eight tons based on their size.
It also has two fourth order Fresnel lenses.
Two fresnel lenses were used as shown in order to obtain a shorter focal length.
This second element actually comprises n Fresnel lenses.
Fresnel lenses are in many cases the equivalent of infrared and visible lenses.
The requirement of three Fresnel lenses necessarily adds to the cost.
The Fresnel lenses comprise projections facing the respective ledes.
In the center are amber and red lights composed of Fresnel lenses.
Modern Fresnel lenses usually consist of all refractive elements.
We present a method to characterize achromatic Fresnel lenses for photovoltaic applications.
Durable Fresnel lenses can be molded from plastic and are inexpensive.
It is quite possible to carry out an analogous function by means of Fresnel lenses.
The lens is one of only six Fresnel lenses still in service in Maine.
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The invention also applies to zone lenses and to Fresnel lenses.
The cylindrical Fresnel lenses in combination act optically as a conventional circular lens.
The known focusing means generally use Fresnel lenses or parabolic mirrors.
Particularly compact designs of optical sensor devices may be achieved by using Fresnel lenses.
Canon and Nikon have used Fresnel lenses to reduce the size of telephoto lenses.
The comparatively lower thickness variation may enable Fresnel lenses to be tempered.
The first and second cylindrical Fresnel lenses in combination act optically as a conventional circular lens.
Link to Technological signature in precision injection compression moulding of polymer Fresnel lenses.
Aircraft carriers and naval air stations typically use Fresnel lenses in their optical landing systems.
The largest Fresnel lenses are called hyperradiant Fresnel lenses.
The Museum includes a display of Fresnel lenses.
Have scratched Fresnel lenses replaced refer to Service parts and accessories.
The sensor arrangement of claim 9 wherein the array of fresnel lenses comprises,.
Accordingly, fresnel lenses are also relatively inexpensive.
Additionally, there is the potential of Fresnel lenses to concentrate heat.
Fresnel lenses are used as simple hand-held magnifiers.
Compared to the spherical lenses, fresnel lenses require less material and account for a lower attenuation.
Fresnel lenses are relatively easy to fabricate, particularly as compared to functionally comparable conventional lenses.
The top wall 6 is composed of a primary optics comprising one or more Fresnel lenses.
Fresnel lenses are stacked layers of transparent material with ridges, which redirect electromagnetic radiation.
In another embodiment ( not shown ) the elementary lenses may naturally be Fresnel lenses.
In lieu of mirrors, Fresnel lenses can also be used to concentrate heat flux.
A signalling light according to claim 1, wherein the optical arrangements are constituted by Fresnel lenses.
Plastic Fresnel lenses are used as magnifiers when a thin, light lens is needed.
Such lenses might be, for example gradient index diffractive optics or Fresnel lenses.
At this time in history, Fresnel lenses were the most advanced in lighthouse lens technology.
Screen according to claim 1, characterized by the fact that the elementary lenses are Fresnel lenses.
Obviously, Fresnel lenses are soon to equip the lighthouses of France and the world.
The upper bottom 6 is formed by the primary optics comprising one or more Fresnel lenses.
FIG . 8 shows an example which only uses Fresnel lenses as the beam shaping optics.
This coloured filter may also have prisms or a matrix of micro-lenses or Fresnel lenses.
Alternatively, the Fresnel module can comprise Fresnel lenses suitable for transmitting the light.
Configurations of such lenses particularly include planoconvex lenses, double-convex lenses and even Fresnel lenses.
Apparatus as claimed in claim 5 wherein the array of Fresnel lenses share a common focal plane.
In particular, Fresnel lenses are used for CPV technology.
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