Porro prism


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Porro prism

[′pȯ·rō ‚priz·əm]
(optics)
One of two identical prisms used in the Porro prism erecting system; it is a right-angle prism with the corners rounded to minimize breakage and simplify assembly.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Added features include Porro prism construction, ultra-fine center focus wheel, adjustable eyecup and indexed rotational tripod ring.
The incorporation of a double Porro prism system will result in a bulkier unit compared to a telescope containing a roof prism system.
Rather than being an inline design, it's laid out like a sideways "Z." It's basically like a Porro prism binocular with the objective lens to the left of the ocular lens.
Most of the binoculars I'm familiar with are roof-prism designs, not the porro prism found on the Yosemites.
Leica's phase-corrected Perger Porro prism design merges the benefits of roof and Porro designs, delivering a streamlined form factor without sacrificing depth of field or color fidelity.
Bushnell's latest couples a waterproof 8x36 porro prism center-focus binocular with a laser rangefinder.
Porro prism scopes have a characteristic dogleg in the barrel (see photograph above right).
The new LandScout Porro Prism binocular series from Celestron offer durability, quality lenses and a host of other features.
Favored for their compact nature and high-performance Porro prism optical system, the Leupold BX-1 Rouge Series ($124.994224.99) is exciting archers.
Birding forums also gave a high rating to the Leupold Yosemite 8x30 porro prism, especially impressive since it retails for around $100.