spherical lens


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spherical lens

A lens in which all surfaces are spherical.
See also: lens
References in periodicals archive ?
In the same way, cylindrical lens, spherical lens, IPD, and visual acuity were detected by the outpatient department of ophthalmology based on automatic optometry method and comprehensive optometry detection.
In the previous section, we used the approximate analytical formulas (1) and (13) to design the spherical lens and to obtain the cells' dimensions.
Nie, "Design and optimization of spherical lens antennas including practical feed models," Progress In Electromagnetics Research, Vol.
In the second half of fiscal 1999, it expects to complete the European toric launch and begin the rollout of two new products: Frequency 55 AB(TM), a spherical lens with a new optical design that can enhance visual clarity in selected patients, and Frequency 55 UV(TM), which contains an ultra violet light blocking agent.
Contract awarded for 7690n00-univet 619 over eye vision shield is clear in lens, blue frame approved en 166 univet can be worn over prescription shield due to its spherical lens, version unvented or provided with indirect ventila
The final fitting anomaly often encountered is lack of a 360[degrees] seal in the alignment zone; this typically occurs when a spherical lens is applied to a toric cornea.
The MarqMetrix TouchRaman BallProbe with patented spherical lens allows users to "touch the sample, take the measurement" without any sample prep or handling.
(2) Spherical lens may lead to pupillary block and secondary angle-closure glaucoma.
$20 instant cash back will be given towards the evaluation fees ($59 for spherical lens, $89 for multifocal lens).
Moreover, most of the previous works usually design spherical lens antennas (SLAs) with ideal primary sources models, such as the point source models, incident plane waves [11], end-fire dipoles [14,15], or open-ended waveguide [16], which are inaccurate for the description of practical feed model (PFM).
In addition to the 0.3mm super thin aspherical lens and 0.3mm thin spherical lens, another aspherical lens is designed to be as thin as 0.4mm, which results in the realization of F2.2 brightness and 24mm ultra wide angle of view at the same time.

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