Orion4Sight Eyewear delivers eye comfort with improved vision, regardless of the sun angle or weather and light conditions. O4S lenses do not “blacken” LCD screens or hand-held displays.
POLARIZING-TYPE SUNGLASSES: THEIR “LIMITS” & HOW THEY WORK
Polarization sunglasses performance is predicted by an infinite number of constantly changing optical variables that are beyond the scope of this writing. “Degrees” of polarization change constantly on land, on the water, at high altitudes, during fluctuating weather or cloud conditions, and even because of air pollutants.
However, there are 2 important polarizing scenarios to consider: LIGHT EMITTED from a display screen, and LIGHT REFLECTED from an object.
“LIGHT EMITTING SOURCE” SUCH AS VIEWIING AN LCD OR SIMILAR SCREEN
- Polarizing-type sunglasses typically “darken/blacken” LCD Displays making them difficult to read. LCD Displays are usually (but not always) used on fixed wing/rotary aircraft, gas pumps, boats, land vehicles, navigational displays, digital watches, hand-held devices, and car windows, etc.
- The quality of the LCD screen image depends upon the polarizing direction built into the sunglass lenses, combined with the manufactured LCD screen polarizing orientation, both of which vary between manufacturers
- If there is no opaque/dark polarization effect, the LCD screen and sunglasses are aligned in the same direction. If they are aligned differently, the screen may appear as varying shades of gray
- Polarizing lenses usually “darken” a scene because they are neutral density filters that obscure all colors indiscriminately
REFLECTED LIGHT, i.e., “LIGHT BOUNCING OFF” A VIEWED OBJECT
Throughout the day, continuously changing angles of reflected light determine the actual performance of polarizing-type sunglasses. These variable include:
- The weather and time of day, combined with the angle/height of the sun, control the angle(s) of reflection off surfaces/objects before viewing through polarizing-type sunglasses
- The angle at which the subject is being observed, with respect to the sun angle at that specific time of day
- The orientation of polarization manufactured into the sunglasses, which may vary between manufacturers
- When wearing polarizing sunglasses and recognizing the changing variables, a bright reflection may be eliminated—or there may be no visible benefit(s)—or perhaps, something in between
- The failure to easily and quickly view LCD Display Screens on airplanes, vehicles, or marine vessels –while wearing polarizing-type sunglasses—may cause any situation to become threatening