Fresnel lens


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Fres·nel lens

(frā'nel),
a lens with a surface consisting of a concentric series of zones that duplicate the power of a lens or prism but with less thickness.
Synonym(s): lighthouse lens

Fresnel,

Augustin Jean, French physicist, 1788-1827.
Fresnel lens - a lens with a surface consisting of a concentric series of zones that duplicate the power of a lens or prism but with less thickness. Synonym(s): Fresnel prism; lighthouse lens
Fresnel prism - Synonym(s): Fresnel lens
References in periodicals archive ?
Chen, "The continuous production of fresnel lens and a discussion on its application in solar building Chen Yike," in Proceedings of ISES World Congress 2007, D.
Peter DeFazio (D-Ore.) pressured the Coast Guard into spending $55,000 to repair the Fresnel lens. He then sponsored a bill that transferred ownership of the lighthouse, located north of Florence, to the Oregon Department of Parks and Recreation, which already owned the land on which it sits.
All experiments were carried out in a pilotscale Fresnel lens (5 Fresnel lens, which was made of PMMA with a thickness of 2 mm, a pitch of 0.5 mm, a facet depth of 0.2 mm, and Fresnel circles of 395 were used) mounted inclined plate curvature channel (IPCC) reactor (Figure 1).
Each two light dependent resistor sensors were placed on the Fresnel lens along the east-west and north-south direction to control the N-S axis and E-W axis movement by two stepper motors, respectively.
(2.) Koshelev, A., et al., "High refractive index Fresnel lens on a fiber fabricated by nanoimprint lithography for immersion applications," Optics Letters, Optical Society of America, 2016.
Fresnel lens (magnifying sheet), Magnifying glasses, small containers of: raw sugar, rock salt, and other items, e.g., a bird feather, a leaf, a plant seed, a crystal, a coin, coral, bark, fabric, newsprint, a shell, a flower, bubble wrap, pencil shavings, a cicada wing, rice, cork, a shoelace, polystyrene foam.
Research paper "Optical Tests on a Curve Fresnel Lens as Secondary Optics for Solar Troughs" by D.
The advantage of the Fresnel lens compared to a light guide used in [21] is significant as collimation of light provides better signal to noise ratio (SNR) at lower power consumption and allows the construction of a more compact and easier to assemble sensor in comparison with a light guide.
(WFT).The supplier's Fresnel Lens film is featured on the La Mia Perla fragrance carton, which is described in detail later in this article.
Usually, Fresnel lens is used as an LCE, for the advantages of reduced thickness and light weight.
Motion detectors containing one PIR sensor, a Fresnel lens with a cone-type beam, and a binary output are very efficient for detecting any type of motion, including human or pet motion.