Title:
【発明の名称】改良された変調伝達関数を備えた投映テレビジョンレンズ系
Document Type and Number:
Japanese Patent JP2002519707
Kind Code:
A
Abstract:
Six-component projection lens systems (13) for use in CRT projection televisions (10) are provided. To provide an improved overall modulation transfer function across the field of view of the lens, the system's first lens element (L1) has an object side surface (S2) which has a best fit spherical surface which is convex to the CRT (16). To provide partial axial color correction, the system's second lens element (L2) is made of a high dispersion material, such as styrene.
Inventors:
Moskovich, Jacob
Application Number:
JP2000556262A
Publication Date:
July 02, 2002
Filing Date:
June 18, 1999
Export Citation:
Assignee:
US Precision Lens Inc.
International Classes:
G02B9/62; G02B13/16; G02B13/18; (IPC1-7): G02B13/16; G02B13/18
Attorney, Agent or Firm:
Seiji Yanagida (1 person outside)