Method for producing optical products and the die assembly using far its manufacturing


Application Number  00128790 Application Date  2000.09.19
Publication Number  1322620 Publication Date  2001.11.21
Priority Information   1996/3/11 US 615336  
International
Classification
 B29D11/00  
Applicant(s) Name  Johnson & Johnson Vision Care, Inc.  
Address    
Inventor(s) Name  A. Gupta;R.D. Broome  
Patent Agency Code  72001 Patent Agent  tai gong
AbstractAn optical preform (10) composed of an optical article, such as a single vision lens, is provided with an adjacent layer of a partially hardened resin (20). The adjacent layer (20) can be conformed to a mold (30) and further hardened to modify the optical properties of the preform (10). In addition, the partially hardened resin layer (20) can be initially placed on the optical article (10) prior to positioning the optical article against the mold (30). Alternatively, the partially hardened resin layer (20) can be initially placed on the surface of the mold (30) prior to positioning the optical article (10) against the mold (30).