A liquid crystal device includes a first substrate, a second substrate
disposed to face the first substrate, a liquid crystal layer sandwiched
between the first substrate and the second substrate, a first optical
compensation plate fixed to the first substrate, a second optical
compensation plate disposed at a side of the first substrate or the
second substrate, and a pivot mechanism supporting the second optical
compensation plate to be pivotable around an optical axis of light
passing through the first substrate and the second substrate.