CPC G02B 7/021 (2013.01) [H04N 23/55 (2023.01); G02B 3/04 (2013.01)] | 18 Claims |
1. A spacer for separating a non-circular first lens element from a second lens element, the spacer comprising:
a spacer perimeter including a contact section being in contact with the first lens element and the second lens element and a non-contact section being separated from the first lens element,
wherein the non-contact section comprises a non-contact section internal inclined surface having a height D2 extending between an internal contour of the spacer to a base of the non-contact section internal inclined surface,
wherein the spacer perimeter has a thickness t extending between a contact point of a back face of the spacer facing the second lens element and a contact point of a front face of the spacer facing the first lens element, and
wherein an inclination of the non-contact section internal inclined surface is greater than a ratio D2/t.
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