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.
References in periodicals archive ?
Tenders are invited for Porro Prism Binocular Magnification X Objilence 7X50 Lens, Coating Fully Field Of View H @ 1000 Yards/M @ 1000M 372F/124M Eye Relief20, Exit Pupil 7.
The incorporation of a double Porro prism system will result in a bulkier unit compared to a telescope containing a roof prism system.
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.
While roof prism instruments look rather like two small telescopes fitted together in parallel, porro prism types have an off-set in them so that the eyepieces are closer together than the objectives.
The BX-2 Acadia binoculars combine the handling of a roof prism binocular with the performance and price of a porro prism design.
Leupold Rogue binoculars offer durable, porro prism models for those who prefer a traditional binocular design.
Bushnell's latest couples a waterproof 8x36 porro prism center-focus binocular with a laser rangefinder.
The housing for the objective screws into the main body, or prism housing, which is divided in two, with a Porro prism in each half held in place by a steel spring clip.
Porro prism scopes have a characteristic dogleg in the barrel (see photograph above right).
Tenders are invited for Porro Prism Binocular Magnification 7X50 Lens Fully Coated Field Of View H @1000 Yards/1000 Meters