Combined lens system

Application Number: 00109202
Application Date: 2000.06.13
Publication Number: 1328265
Publication Date: 2001.12.26
Priority Information:
International: G02B9/14
Applicant(s) Name: Dali Photoelectric Co Ltd
Inventor(s) Name: Huang Youzhi
Patent Agency Code: 72002
Patent Agent: li shumeng
Abstract A combined lens system with 5-100 mm of focal distance range is composed of the first plastic lens with positive refraction and convex front surface, the second plastic lens with negative refraction and concave front surface, and the third glass lens with positive refraction. A non-spherical surface is arranged on said plastic lenses. Its advantages are fully corrected aberration and very low cost.