Assembled lens, optical head and optical recordable player with them
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsHidenori Wada, Keiichi Matsuzaki, Seiji Nishino, Tetsuo Saimi, Kenichi Kasazumi, Masanari Mohri
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Abstract
An objective lens assembly includes: at least two groups of lenses having a common optical axis: and at least two lens holders for respectively holding the at least two groups of lenses, wherein each of the lens holders has an end face perpendicular to the optical axis, and the lens holders are positioned such that the end face of one of the lens holders faces the end face of the other lens holder, and a gap between these end faces is filled with an adhesive agent for adhering the lens holders to each other.
Claims34
An objective lens assembly, comprising:
- at least two groups of lenses having a common optical axis;
- and
- at least two lens holders for respectively holding the at least two groups of lenses,
- wherein each of the lens holders has an end face perpendicular to the optical axis, and
- the lens holders are positioned such that the end face of one of the lens holders faces the end face of the other lens holder, and a gap between these end faces is filled with an adhesive agent for adhering the lens holders to each other.
An objective lens assembly, comprising:
- at least two groups of lenses having a common optical axis;
- and
- at least two lens holders for respectively holding the at least two groups of lenses,
- wherein at least one of the at least two lens holders has an engagement portion for engaging with an actuator which drives the objective lens assembly such that the position of the objective lens assembly is controlled.
Dependencies are inferred from the claim text.