Led Projection Tv. The Screen Is Exposed To Direct Sunlight For 20 Minutes A Day. Can This Cause Any Damage?

Most RPTVs use a rigid acrylic plastic screen to keep the weight and cost to a minimum. Over the average lifetime of a typical RPTV the effect of direct sunlight exposure—primarily UV exposure—is fairly negligible. I have seen older RPTV screens that have incurred slight discoloration in the form of yellowing. Unprotected acrylic, not unlike many other optically transparent plastics, is vulnerable to the effects of UV exposure. To err on the safe side I recommend that you proceed as if the RPTV manufacturer is using an acrylic screen material that does not contain a UV inhibitor or equivalent protective coating.
If your residence is not equipped with UV-blocking windows and if you’re reluctant or unable to block the direct sunlight from your viewing environment during that approximate time of day then your best option is to apply a UV-blocking window film or use a transparent, UV, glare, and heat blocking window treatment, e.g. a transparent window shade. This would not only reduce any potential risk of degradation to your projection screen but would also provide other valuable benefits.
As a side note with respect to your viewing environment: in order to prevent veiling glare and maximize ambient contrast, especially when using a projection display, you should make every effort to eliminate all (or nearly all) light within your viewing environment when using a display. This is very important if or when image quality is a priority.
3M™ Prestige Series Window Filmhttp://www.3m.com/us/arch_construct/scpd…
Halcyon Shadeshttp://www.halcyonshades.com http://www.cpfilms.com/products.html
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Understanding Contrast Ratios in Video Display Devices http://www.hometheaterhifi.com/volume_13…
NIST Flat Panel Display Laboratory
Tips for Buying FPD TVshttp://www.fpd.nist.gov/tips.html
The Contrast Ratio Game: Playing with Numbershttp://www.practical-home-theater-guide.…
The Truth About Inflated HDTV Contrast Ratioshttp://www.carltonbale.com/2007/01/the-t…
“Brightness” and “Contrast” Controls http://www.poynton.com/notes/brightness_…
Gamma FAQhttp://www.poynton.com/notes/colour_and_…
Frequently Asked Questions about Gammahttp://www.poynton.com/PDFs/GammaFAQ.pdf
“Gamma” and its Disguiseshttp://www.poynton.com/PDFs/SMPTE93_Gamm…
Charles Poynton, “High Definition Television and Desktop Computing”http://www.multimedia.edu.pl/mmLab/Multi…
What is Display Gamma?http://www.sencore.com/newsletter/June04…
The Whole Story behind Display Specifications and Human Visionhttp://www.infocomm.org/cps/rde/xbcr/inf…

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