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Patent Searching and Data


Title:
DAYLIGHTING MEMBER
Document Type and Number:
WIPO Patent Application WO/2019/181450
Kind Code:
A1
Abstract:
A daylighting member (1) has a substrate (10) and a projecting part (13) which protrudes in a first direction from the substrate (10) and extends in a second direction. The projecting part (13) includes an incidence surface (14) on which light is incident, and a reflecting surface (15) for reflecting light incident on the incidence surface (14). In a plane orthogonal to the second direction, the expression φ = ((π/2) – θ1 + θ2)/2 is satisfied with respect to at least a portion of a light ray (L1) incident on the incidence surface (14), where θ1 is the refracting angle of a light ray (L1) incident on the incidence surface (14), θ2 is the angle formed by the incidence surface (14) and a light ray (L2) reflected by the reflecting surface (15), and φ is the angle formed by the incidence surface (14) and a tangential plane (TP) at the point (Pt) at which the light ray (L2) is reflected by the reflecting surface (15).

Inventors:
FUJII Yusuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
NIIKURA Eiji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2019/008331
Publication Date:
September 26, 2019
Filing Date:
March 04, 2019
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
G02B5/02; E06B5/00; G02B5/00
Domestic Patent References:
WO2015098940A12015-07-02
WO1997031276A11997-08-28
Foreign References:
JP2012189280A2012-10-04
JP2016091941A2016-05-23
Attorney, Agent or Firm:
YAMAGATA Yoichi et al. (YAMAGATA & SATO, Koda Bldg. 4F 16-2, Yoyogi 2-chome, Shibuya-k, Tokyo 53, 〒1510053, JP)
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