varifocal


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varifocal

1. Optics having a focus that can vary
2. relating to a lens that is graduated to permit any length of vision between near and distant
References in periodicals archive ?
Subsequently, the laser beam is adjusted by two lenses that magnify the laser beam that is then reflected from a mirror into the varifocal lens.
Appropriate viewing sector can be set up by the adjustable varifocal lens with 3.
Physicist and engineer Blundell continues his long interest in three-dimensional display and interactive systems by focusing on two general classes of such displays: volumetric systems in which images may be depicted within a transparent physical volume, and varifocal systems that support the formation of images within a virtual space.
XT] cameras are available with auto-iris varifocal lens options, line-lock with phase adjustment, and backlight compensation.
Ingeniously designed to allow distance through the centre of the lenses, and near vision around the periphery, Boots Near & Far contact lenses work like varifocal lenses.
They can be made up in single, bifocal or varifocal lenses and you can even select the lens colour from a shade card.
The new cameras including 4MP ultra-low profile vandal domes with fixed lens (DWC-MF4WiC), 4MP vandal domes with motorized auto focus zoom and varifocal lens (DWC-MV84WiAC) and 5MP vandal fisheye models (DWC-PVF5M1TIRC) are powered by DW Spectrum IPVMS server onboard.
Optik Mizen has launched a new varifocal lens that has been designed to achieve more natural vision for patients with astigmatism.
IF YOU buy glasses from Specsavers' pounds 75 range or above, it will fit standard PENTAX varifocal lenses, worth pounds 49, free.