Optical lens and method of making the same

Details Optical lens and method of making the same Optical lens and method of making the same

1998-09-17

1999-12-28

Epps, Georgia

Optical: systems and elements

Lens

With support

G02B 702

Patent

active

060089571

ABSTRACT:
A lens includes a center-of-gravity adjusting section in order to prevent the center of gravity of the lens from shifting due to removal of a gate portion formed during molding, thereby providing an optical lens which is easily handled and a method of making the optical lens. An optical lens having a flange at the outer periphery of an optically functioning portion includes a gate-cut section formed by cutting off a part of the flange together with a gate portion, continuously with the flange, and a center-of-axis adjusting section, formed by removing a part of the flange, for positioning the center of gravity in alignment with the optical axis of the optically functioning portion.

REFERENCES:
patent: 5050963 (1991-09-01), Murakami
patent: 5905599 (1999-05-01), Nomura et al.

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