Prism, optical system and camera module

Abstract

The optical system disclosed in the embodiment of the invention includes: a prism and a lens portion disposed on the prism, wherein the prism includes a first surface on an object side, a third surface on a side opposite to the first surface, second and fourth surfaces disposed on opposite sides between the first surface and the third surface and configured to reflect light, and fifth and sixth surfaces disposed on opposite sides in a first direction, the first to fourth surfaces of the prism are effective optical surfaces, and the fifth and sixth surfaces are ineffective surfaces, each of the fifth and sixth surfaces includes a groove portion having a plurality of concave grooves formed therein, a width of the prism in a short-side direction is D1 and is smaller than a length L1 of the prism in a long-side direction.

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