Optical lens preform, optical lens, and method of making...

Optical: systems and elements – Lens – With support

Reexamination Certificate

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Details

C264S002700, C065S111000, C359S710000

Reexamination Certificate

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07110193

ABSTRACT:
The method of making an optical lens in accordance with the present invention comprises an optical lens preform producing step of producing an optical lens preform40having a plurality of curved surface parts43formed parallel to each other, and a pair of flanges48formed on both sides of the plurality of curved surface parts43;a drawing step of drawing the optical lens preform40;and an optical lens producing step of producing an optical lens1by cutting the drawn optical lens preform40;wherein the plurality of curved surface parts43of the optical lens preform40drawn by the drawing step function as an optically effective part. In such a method, the form of the optically effective part can be determined in the stage of the preform before drawing, whereby the optically effective part can be processed in a sufficiently large size.

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