Title:
PARALLEL LIGHT GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/138476
Kind Code:
A1
Abstract:
In the present invention, the direction in which a cylindrical surface does not have curvature within a plane perpendicular to the optical axis (10) of a lens (2), is the bus line direction of the lens (2), and the direction in which the cylindrical surface has curvature and the direction perpendicular to the bus line direction is the curvature direction of the lens (2). A light source (1) is arranged at a focal position (21) in the bus line direction on the incident surface (3) side of the lens (2), and emits, onto the incident surface (3) of the lens (2), light in which the flare angle in the bus line direction of the lens (2) and the flare angle in the curvature direction of the lens (2) are different.
Inventors:
SAKAI KOHEI (JP)
TAKADA YUKARI (JP)
SHOHDA FUMIO (JP)
HIROSAWA KENICHI (JP)
KAMEYAMA SHUMPEI (JP)
TAKADA YUKARI (JP)
SHOHDA FUMIO (JP)
HIROSAWA KENICHI (JP)
KAMEYAMA SHUMPEI (JP)
Application Number:
PCT/JP2018/000363
Publication Date:
July 18, 2019
Filing Date:
January 10, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G02B3/06; G02B27/09
Foreign References:
| JP6165366B1 | 2017-07-19 | |||
| JPS63269130A | 1988-11-07 | |||
| JPS53100843A | 1978-09-02 | |||
| JP2009271206A | 2009-11-19 | |||
| JP2007171286A | 2007-07-05 | |||
| JPH04114117A | 1992-04-15 | |||
| JPH1114922A | 1999-01-22 | |||
| CN103176226A | 2013-06-26 | |||
| JPH02235010A | 1990-09-18 |
Other References:
LASERS, A. E. SIEGMAN: "University Science Books", MILL VALLEY
See also references of EP 3730994A4
See also references of EP 3730994A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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