The first anti-glare glasses, originally with green glass blocking U/V rays, were Ray-Bans, patented in 1939 as Aviators for the US Army Air Corps. Their shapes reduced light from any angle.
When adding lights into your bedroom there are a few queries that are bund to crop up – 'what types should I buy'?, 'how many do I need?', and also, what we're dealing with here, 'do all bedroom light ...