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All fourteen Sleep ZM lens tints, photographed through the lens itself. Drag any slider to see exactly what each one takes out of the light, and what it leaves alone. The blocking percentage and filter category on every card are the certified figures from our lab reports.
Every lens filters a different part of the spectrum. Here is what that looks like in practice.
Crystal-clear lenses that subtly reduce harsh artificial light while preserving true-to-life colors. Ideal for everyday wear, they provide comfortable vision whether you're working, commuting, or spending long hours indoors, all without the noticeable tint of traditional blue light glasses.
A light yellow tint that lifts contrast on screens and takes the edge off display light: 60% filtered across 400–500nm, with 79% visible light transmission. A Category 1 lens, so colours shift slightly warm but stay workable for everyday tasks, gaming and browsing. The pair for long screen sessions when clear isn't quite enough.
A precision green tint for creators, designers and anyone doing colour-critical work. It filters 83% across 400–500nm while holding 49% visible light transmission — a Category 1 lens that takes out substantially more than a clear filter without throwing off how colours read on screen. The heaviest filtering in the range that's still usable for colour work.
A light yellow-green lens at 77.3% visible light transmission — Category 1, and the one lens in the range that meets the 75% minimum EN ISO 12312-1 sets for twilight and night driving. It filters 77.5% of blue light across 380–500nm and passes ANSI Z80.3 traffic-signal recognition. It is cleared to drive in, not a way to see better: no tint improves night vision, and it does not meet AS/NZS 1067.
The only lens in the range that passes all three driving standards, and in daylight only. Indoors it sits close to clear; step outside and it darkens, moving between 57.98% and 23.76% transmission as the light changes, which keeps it within Category 1 to 2. It is the pair for a daytime commute — and the pair to swap for GlareAid once it is dark.
Polarised gray for full sun. It knocks back glare from water, snow and bright pavement while holding colour close to neutral, so the view stays natural rather than tinted. At 13% transmission this is a Category 3 lens for bright outdoor light — not one to wear indoors, and not one to drive in.
InvisiAid's clear lens with built-in magnification: 35% filtered across 400–500nm at 86% visible light transmission, Category 0. Made for books, labels, phones and tablets where you want the text bigger and the light slightly softened, without the distraction of a tint.
A soft rose FL-41 tint that peaks at 47.74% blocking around 510nm, the band linked to light sensitivity. At 67.56% visible light transmission it's a Category 1 lens you can wear indoors all day, under fluorescent and LED lighting and on screens. Not for driving after dark, and not a medical treatment.
A deep brown FL-60 tint for people who find ordinary sunglasses are not enough. It cuts glare hard while keeping colours recognisable rather than flattening them, so a bright day stays manageable when light is painful. At 14.80% transmission this is a Category 3 lens: daylight only, and never after dark or in twilight.
Specially developed for environments dominated by fluorescent or rapidly flickering LED lighting, FlickerAid targets the wavelengths most commonly associated with visual discomfort. The result is a calmer, more stable viewing experience for offices, classrooms, hospitals, and other brightly lit indoor settings.
A gentle peach tint designed to create a softer, warmer visual environment as the day winds down. By filtering a substantial portion of blue light while maintaining a pleasant viewing experience, Serenity helps make evening screen time feel more comfortable and relaxing.
A soft lavender tint for eyes that find ordinary indoor lighting harsh. It blocks 59% of blue light between 400 and 500nm while letting 66% of visible light through, so a room loses its edge without losing its brightness. A Category 1 lens, comfortable to wear indoors through the afternoon and into the early evening.
A rich amber-orange tint that filters nearly all blue light, creating a warmer and more relaxing view of your surroundings. Perfect for evening screen time, it helps support your body's natural wind-down process while maintaining comfortable visibility indoors.
The strongest filter in the Sleep ZM range: 99.7% across 380–580nm, covering blue light and the green wavelengths either side of it. At 22.17% visible light transmission this is a Category 2 lens, so the room goes deep amber-red — that is the trade for the filtering. Built for the last two to three hours before bed, indoors. Not a lens for driving.
Jeff and Dot Smith's guide to living with light: which lens suits which hour, how light moves your body clock, and what to change before you reach for a different pair of glasses. Free, sent straight to your inbox.
