Lens and optical unit including the same

Abstract

It is an object of the present invention to provide a lens having small birefringence, large refraction and excellent transparency and heat resistance and an optical unit including the lens. The present invention is a lens obtained from a polycarbonate copolymer (I) which is composed of a unit (A) represented by the following formula: (R1 to R4 are each independently a hydrogen atom, hydrocarbon group having 1 to 9 carbon atoms or halogen atom) and a unit (B) represented by the following formula: (plurality of R5 and R6 are each independently a hydrogen atom or the like, and R7 and R8 are each independently a hydrogen atom or alkyl group having 1 to 9 carbon atoms, with the proviso that the total number of carbon atoms of R7 and R8 is 9 or 10), the content of the unit (A) being 50 to 80 mol % of the total of all the units, and an optical unit including the lens.

Dependencies are inferred from the claim text.