Share Email Print
cover

Proceedings Paper

Study on pressing conditions in the molding of aspheric glass lenses for phone camera module using design of experiments
Author(s): Hye-Jeong Kim; Du-Hwan Cha; Sang-Suk Kim; Jeong-Ho Kim
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Recently, the application of aspheric glass lenses is rapidly expanding due to the availability of mass production employing the glass molding press(GMP) process. To date, the GMP process has been regarded as one of the reliable methods in fabrication of aspheric glass lenses. However, it has been found that there are some difficulties during the process to control many parameters (e.g. molding temperature, pressing time and pressing force, etc). Design of experiments (DOE) is one of the solutions to properly control these parameters and a useful tool in the process and analysis of complicated industrial design problems. This study investigated the pressing conditions in the molding of aspheric glass lenses for the mega pixel phone camera module using the DOE method. The fractional factorial design is applied and the form accuracy (PV) of the aspheric surface of the molded lens is employed as a response variable. The analysis results indicate that the only two main effects, the time of pressing step 2 and the force of pressing step 1, are available for the form accuracy (PV) of the molded lens. It is the optimum condition among the designed pressing conditions for lowering the form accuracy (PV) value that all factors are at their low levels. The form accuracies (PV) of the mold and molded lens under the optimum condition are 0.181 um and 0.22 um, respectively.

Paper Details

Date Published: 10 September 2007
PDF: 9 pages
Proc. SPIE 6717, Optomechatronic Micro/Nano Devices and Components III, 671709 (10 September 2007); doi: 10.1117/12.754331
Show Author Affiliations
Hye-Jeong Kim, Korea Photonics Technology Institute (South Korea)
Du-Hwan Cha, Chonnam National Univ. (South Korea)
Sang-Suk Kim, Korea Photonics Technology Institute (South Korea)
Jeong-Ho Kim, Korea Photonics Technology Institute (South Korea)


Published in SPIE Proceedings Vol. 6717:
Optomechatronic Micro/Nano Devices and Components III

© SPIE. Terms of Use
Back to Top