• Your shopping cart is empty!

PDF Preview

BS PD ISO/TR 20772:2018

Ophthalmic optics. Spectacle lenses. Short wavelength visible solar radiation and the eye

BSI Group, 09/28/2018

Publisher: BS

File Format: PDF

$147.00$294.64


Published:28/09/2018

Pages:36

File Size:1 file , 1.4 MB

Note:This product is unavailable in Ukraine, Russia, Belarus

BS PD ISO/TR 20772:2018 describes visible solar radiation with wavelengths close to the UV range, its transmission to, within and the effects on the human eye. The wavelengths concerned are from 380 nm to 500 nm, covering the colours of violet, indigo and blue - often referred to as the "blue wavelengths".


Cross References:
ISO 13666
ISO 4007
ISO 11664-2:2007
ISO 20473:2007
ISO 12311:2013
ISO 12312-1:2013
ISO 14889:2013
ISO 8980-3:2013
ISO 12312-2:2015
ISO 12312-1
ISO 8980-3
ISO 14889


All current amendments available at time of purchase are included with the purchase of this document.

More BS standard pdf

BS CP 143-10:1973

BS CP 143-10:1973

Code of practice for sheet roof and wall coverings-Code of practice for sheet roof and wall coverings. Galvanized corrugated steel. Metric units

$90.00 $180.34

BS 2HR 503:1973

BS 2HR 503:1973

Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy wire for thread inserts (0.45 mm to 2 mm diameter) (nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)

$36.00 $73.66

BS 1000[621/621.0]:1973

BS 1000[621/621.0]:1973

Universal Decimal Classification. English full edition-Mechanical engineering in general. Nuclear technology

$90.00 $180.34

BS 2HR 502:1973

BS 2HR 502:1973

Specification for nickel-chromium-cobalt-titanium-aluminium heat-resisting alloy cold drawn and solution heat treated wire for springs (nickel base, Cr 19.5, Co 18.0, Ti 2.5, Al 1.5)

$76.00 $152.40