Title:
LENS WITH AT LEAST ONE OBJECT-SIDE REFRACTIVE SURFACE AND AT LEAST ONE IMAGE-SIDE REFRACTIVE SURFACE
Document Type and Number:
Japanese Patent JP2015166863
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lens which allows for measuring light intensity of an effective luminous flux propagating therethrough without requiring additional components for coupling light out.SOLUTION: A lens includes at least one object-side refractive surface 17, at least one image-side refractive surface 18, and a reflective surface 5 arranged between the object-side refractive surface 17 and image-side refractive surface 18 and aligned obliquely to an optical axis 2. A portion of the incident luminous flux 12 impinges on the reflective surface 5, and this portion is then coupled out of the incident luminous flux 12 as a partial luminous flux 13 and enters an edge region 14 of the lens 1. A measurement device 15 for measuring light intensity may be placed in the rear of the edge region 14.
Inventors:
CARSTEN STELZER
Application Number:
JP2015024235A
Publication Date:
September 24, 2015
Filing Date:
February 10, 2015
Export Citation:
Assignee:
SYPRO OPTICS GMBH
International Classes:
G02B3/00; G02B5/00; G02B19/00; G03B7/0997
Domestic Patent References:
| JP2009503616A | 2009-01-29 | |||
| JPS5555228A | 1980-04-23 | |||
| JPH07294768A | 1995-11-10 | |||
| JPS6296924A | 1987-05-06 | |||
| JP2012123250A | 2012-06-28 | |||
| JP2012530932A | 2012-12-06 |
Foreign References:
| EP0209108A2 | 1987-01-21 | |||
| US20030053222A1 | 2003-03-20 | |||
| US20030165065A1 | 2003-09-04 | |||
| US20050007664A1 | 2005-01-13 |
Attorney, Agent or Firm:
sk patent corporation
Akihiko Okuno
Hiroyuki Ito
Akihiko Okuno
Hiroyuki Ito
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