The Hybrid Series · FL-41
Chrono Burnt Umber
A burnt umber rectangle small enough to forget you put on.
Chrono runs a 49 mm eye, one of the smallest here, inside a plain rectangle on a 139 mm front. The 20 mm bridge is wide for that eye, which lifts the frame and opens the nose area, and the 40 mm lens height is more generous than the compact outline suggests, so coverage under the pupil holds up. Burnt umber is a warm mid-brown that sits close to the rose of the lens rather than fighting it. The whole frame is aimed at people who want the filter present and the eyewear absent.
Two tints, two jobs
Two rose depths, one compact rectangle
FL-41 LightMild photophobia, all dayWhere the dark lens is for a bright room, this one is for the whole day. It shares the rose-band notch with FL-41 Dark and runs at a higher overall transmittance. The full spectrophotometer report is being finalized and will be published here. 100% UV400.
FL-41 DarkSevere photophobiaThe blue band is held down across its width instead of being removed: 7.9% at 420 nm, 13.8% at 450 nm. Green comes down with it, 12.6% at 520 nm. Luminous transmittance is 41.1%, Filter Category 2, with 100% UV protection (UV400).
All figures are single-lens spectrophotometer measurements from our own laboratory reports for this lens, tested to EN ISO 12312-1, ANSI Z80.3 and AS/NZS 1067.1. Individual response varies.
Fit
Will the Chrono fit you?
Chrono is medium at 139 mm across the front, but the 49 mm eye makes it read as a small frame. The 20 mm bridge is wide for that eye and keeps the rectangle sitting high and clear of the cheek. At 40 mm the lens depth is better than the compact outline suggests, so coverage below the pupil is real. Temples are 145 mm, standard. A broad face will find this one undersized.
| Frame size | 49-20-145 |
|---|---|
| Front width | 139mm |
| Lens height | 40mm |
| Fit | Medium |
| Shape | Rectangle |
| Collection | The Hybrid Series |
| Lens options | FL-41 Light or Dark · zero power or prescription |
| UV protection | 100% UV400, both tints |
In the box
- Chrono Burnt Umber frame in your chosen FL-41 tint
- Hard case and microfiber cleaning cloth
- Spectrophotometer report reference for your lens
- One-year frame warranty, six-month lens warranty
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.