Title:
平行光発生装置
Document Type and Number:
Japanese Patent JP6693680
Kind Code:
B2
Abstract:
In a plane perpendicular to the optical axis (10) of a lens (2), the direction in which the cylindrical surface has zero curvature is the direction of generatrix of the lens (2), and the direction in which the cylindrical surface has non-zero curvature and that is orthogonal to the direction of generatrix is the direction of curvature of the lens (2). A light source (1) is disposed at the focal position (21) in the direction of generatrix on the side of the incident surface (3) of the lens (2), and emits light toward the incident surface (3) of the lens (2), the light having a difference between the divergence angle in the direction of generatrix of the lens (2) and the divergence angle in the direction of curvature of the lens (2).
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Inventors:
Kohei Sakai
High Yukari Tada
Fumio Masada
Kenichi Hirosawa
Shunpei Kameyama
High Yukari Tada
Fumio Masada
Kenichi Hirosawa
Shunpei Kameyama
Application Number:
JP2019565115A
Publication Date:
May 13, 2020
Filing Date:
January 10, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
G02B3/06; G02B27/09
Domestic Patent References:
| JP2004334129A | ||||
| JP6165366B1 | ||||
| JP63269130A | ||||
| JP53100843A | ||||
| JP2009271206A | ||||
| JP2007171286A | ||||
| JP4114117A | ||||
| JP11014922A |
Foreign References:
| WO2017187609A1 | ||||
| CN103176226A | ||||
| US6700709 |
Attorney, Agent or Firm:
Hideaki Tazawa
Hamada Hatsune
Nakashima Shigeru
Tsujioka Masaaki
Hamada Hatsune
Nakashima Shigeru
Tsujioka Masaaki