Title:
浸漬システム
Document Type and Number:
Japanese Patent JP4109355
Kind Code:
B2
Abstract:
An immersion lens, for a magneto-optical memory device, consists of a semiconductor material or is followed by a transparent higher refractive index layer. An immersion system (1), for a magneto-optical memory device, comprises a lens (3) of spherical segment shape having a flat face and a curved face, the lens material being transparent to the wavelength of the electromagnetic radiation (2) used in the device and having a higher refractive index than air. The lens (3) consists of a semiconductor material; or (ii) the lens (3) is followed, in the radiation propagation direction, by a transparent higher refractive index layer (4) which has a main face (6) facing the flat lens face (5) and which consists of a material with a refractive index higher than that of the lens material. Preferred Feature: The higher refractive index layer (4) consists of a transparent semiconductor material.
Inventors:
Werner Spaet
Application Number:
JP24925498A
Publication Date:
July 02, 2008
Filing Date:
September 03, 1998
Export Citation:
Assignee:
Osram Opto Semiconductors GmbH
International Classes:
G02B1/02; G02B7/02; G11B7/135; G11B11/105; G11B5/127; G11B5/17; G11B7/12; G11B33/12
Domestic Patent References:
| JP8212579A | ||||
| JP1154101A | ||||
| JP5189796A | ||||
| JP63500826A | ||||
| JP6239609A | ||||
| JP4072550A | ||||
| JP5250753A | ||||
| JP9245391A |
Attorney, Agent or Firm:
Iwao Yamaguchi