Look at above comment about f.lux. You don't even need hardware; you can do it with software. But a quick search for such filters already delivers a lot of res

Look at above comment about f.lux. You don't even need hardware; you can do it with software. But a quick search for such filters already delivers a lot of results: http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&field-keywords=blue+light+screen&rh=i%3Aaps%2Ck%3Ablue+light+screen http://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3D.... Just choosing one of those results randomly (http://www.amazon.com/Green-Onions-Supply-Anti-Fingerprint-Protector/dp/B00FERNIY4/ref=sr_1_fkmr1_2?ie=UTF8&qid=1406646075&sr=8-2-fkmr1&keywords=blue+light+screen+460-480+nm+spectra http://www.amazon.com/Green-Onions-Supply-Anti-Fingerprint-P...) seems to address that light spectrum specifically: "They reduce blue light from your screen by 38% over the most harmful portions of the visible light spectrum (380 to 500 nm)"