Title:
PARALLEL LIGHT GENERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/187609
Kind Code:
A1
Abstract:
In the present invention, a lens (10) includes an incidence surface (11) having a cylindrical concave shape, and an emission surface (12) having a convex shape with respect to an optical axis (10a). A light source (20) has a large vertical spread angle and a horizontal spread angle smaller than the vertical spread angle. The light source (20) is disposed at a position along the vertical direction of the lens (10) at the focal length thereof on the incidence surface side. The light source (20) is disposed so that the horizontal direction thereof matches the curvature direction in the cylindrical shape of the lens (10).
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Inventors:
SAKAI KOHEI (JP)
TAKADA YUKARI (JP)
SHOHDA FUMIO (JP)
HIROSAWA KENICHI (JP)
YANAGISAWA TAKAYUKI (JP)
TAKADA YUKARI (JP)
SHOHDA FUMIO (JP)
HIROSAWA KENICHI (JP)
YANAGISAWA TAKAYUKI (JP)
Application Number:
PCT/JP2016/063398
Publication Date:
November 02, 2017
Filing Date:
April 28, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
G02B27/30; G02B3/06
Foreign References:
| JP2016045302A | 2016-04-04 | |||
| JP2002022906A | 2002-01-23 | |||
| JP2001100145A | 2001-04-13 | |||
| JPS55130512A | 1980-10-09 | |||
| JP2011186195A | 2011-09-22 | |||
| JP2010091855A | 2010-04-22 |
Other References:
See also references of EP 3435141A4
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (JP)
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