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US 9,283,719 B2Granted
Optical component and method of making the same
AssigneeCanon Kabushiki Kaisha
InventorsWataru Kikuchi, Daigo Kobayashi
Life of this patent
Estimating the term…
Abstract
A recessed portion, through which a covering plastic that has been melted and that is used for covering a core lens is introduced in a bifurcating manner, is formed in the core lens, and the covering plastic is introduced simultaneously onto the front and back surfaces of the core lens through the recessed portion.
Claims9
A method of making an optical component comprising:
- inserting a core lens into a mold, wherein the core lens has a recessed portion, only one recessed portion of which forms a space by being recessed into an outer periphery, and is recessed to reach an optically effective area;
- and
- introducing a covering plastic into a space between the mold and a front surface of the core lens, a space between the mold and a back surface of the core lens and the one recessed portion of the optically effective area by introducing the covering plastic through the one recessed portion.
Dependencies are inferred from the claim text.