Title:
MANUFACTURE OF OPTICAL ELEMENT, EXECUTING DEVICE FOR SAID METHOD AND OPTICAL ELEMENT MANUFACTURED THROUGH SAID METHOD
Document Type and Number:
Japanese Patent JPS60154014
Kind Code:
A
Abstract:
For manufacturing mono-spherical lenses, a correction layer of a synthetic resin is provided on a substrate having a spherical surface (replica method). In this method centring is carried out by using the curvature of the surface of the matrix. With a correct choice of the radius of curvature of the substrate surface, the substrate approaches the matrix most closely near a collection of inflection points in the matrix surface situated on a circle.A good centring without a guiding mechanism is possible by using the method according to the invention. Moreover, the differences in thickness in the correction layer are small enough to prevent shrinkage defects upon curing of the synthetic resin layer.
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Inventors:
YOHANESU MARIA HERARUDASU FUER
ARUBERUTO SUMIDO
HERUMAN MARIA ANTONIUSU AMENDE
ARUBERUTO SUMIDO
HERUMAN MARIA ANTONIUSU AMENDE
Application Number:
JP20069784A
Publication Date:
August 13, 1985
Filing Date:
September 27, 1984
Export Citation:
Assignee:
PHILIPS NV
International Classes:
B29D11/00; B29C39/02; B29L11/00; (IPC1-7): B29C39/02; B29L11/00
Attorney, Agent or Firm:
Akihide Sugimura