An optical element in which a hard coat layer is formed on an organic glass base material surface via a primer layer. For a primer composition forming a primer layer, whole or the main body of the primer layer formation polymer is made as being ester based TPE. Moreover, a hard coat composition forming a hard coat layer is consisted of a hydrolysate of alkoxysilane in which trialkoxysilane containing monoexpoxy organic group is the main body as a matrix formation ingredient, and the titanium based metal oxide complex particle as being an optical interference control agent, the foregoing titanium based metal oxide complex particle is consisted of T1O2 as the main body, SiO2 as a major sub-ingredient, and further, ZrO2 and K2O as a trace sub-ingredient. An optical element of the present invention is capable of suppressing optical interference even if it is a high refractive index base material and the stability of coated film portion is also excellent as well as has a variety of properties comparable to the conventional optical parts.
一种光学元件,通过底层在有机
玻璃基材表面形成硬涂层。在形成底漆层的底漆组合物中,底漆层形成聚合物的整体或主体是由酯基 TPE 制成的。此外,形成硬涂层的硬涂层组合物是由烷氧基
硅烷的
水解物(其中含单环氧有机基团的三烷氧基
硅烷为主体)作为基体形成成分,以及
钛基金属氧化物复合颗粒作为光学干涉控制剂组成,前述
钛基金属氧化物复合颗粒是由 T1O2 作为主体,SiO2 作为主要副成分,以及 ZrO2 和
K2O 作为微量副成分组成。本发明的光学元件即使是高折射率基体材料,也能抑制光干涉,镀膜部分的稳定性也很好,并具有与传统光学元件相当的各种性能。