Optical element

A method of forming an optical element comprising the steps of:

• forming a hard coat layer on a surface of an organic glass base material via a primer layer,
• wherein said primer layer comprises a primer layer formation polymer wherein all or part of the primer layer formation polymer is an ester based TPE,
• wherein said hard coat layer comprises a hard coat composition, said hard coat composition comprising hydrolysate of alkoxysilane whose main body is trialkoxysilane containing monoepoxy organic group as a matrix formation ingredient, and titanium based metal oxide complex particle as an optical interference control agent, and
• wherein said titanium based metal oxide complex particle comprises TiO2 as a main ingredient, SiO2 as a major sub-ingredient and further ZrO2 and K2O as a trace sub-ingredient.

A method of forming optical element comprising the steps of:

• forming a hard coat layer on an organic glass base material surface via a primer layer and
• sublimely dyeing an organic glass base material,
• wherein said primer layer comprises a primer layer formation polymer wherein all or part of the primer layer formation polymer is an ester based TPE,
• wherein said hard coat layer comprises a hard coat composition, said hard coat composition comprising hydrolysate of alkoxysilane whose main ingredient is trialkoxysilane containing monoepoxy organic group as a matrix formation ingredient, and titanium based metal oxide complex particle as an optical interference control agent,
• wherein said titanium based metal oxide metal complex particle comprises TiO2 as a main ingredient, SiO2 as a major sub-ingredient and further ZrO2 and K2O as a trace sub-ingredient, and
• wherein the composition used for said sublimation type dyeing step comprises a an acrylic resin sizing agent, a water insoluble dye, and an organic solvent having 8-11 of a SP value (resolving property parameter) as a dye resolving agent.