CREATE TABLE table_66888 ("Name" TEXT, "Nickname" TEXT, "Year" FLOAT, "Advantage" TEXT, "Transmittance/ contrast ratio" TEXT)

What is Ips-provectus transmittance/contrast ratio?
SELECT "Transmittance/ contrast ratio" FROM table_66888 WHERE "Name" = 'ips-provectus'
SELECT "Transmittance/ contrast ratio" FROM "table_66888" WHERE "Name" = 'ips-provectus'