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Patent Searching and Data


Title:
MULTISTAGE PRISM WINDOW
Document Type and Number:
WIPO Patent Application WO/2019/187880
Kind Code:
A1
Abstract:
This multistage prism window (1) is provided with first and second transparent plate materials (10a, 10b), a first prism (30), a reflection member (40), a second prism (50), and a heat absorption member (60). The first prism (30) collects, onto the reflection member (40), light of which an angle to the normal line of the first and second transparent plate materials (10a, 10b) is a prescribed angle or larger, retro-reflects the collected light, and transmits light in which the angle is smaller than the first prescribed angle. The second prism (50) collects, onto the heat absorption member (60), light of which an angle to the normal line is smaller than the prescribed angle and equal to or greater than a second prescribed angle, wherein the collected light is used for indoor heating, and transmits light in which the angle is smaller than the second prescribed angle.

Inventors:
NAKAMURA TAKUJU (JP)
Application Number:
PCT/JP2019/007153
Publication Date:
October 03, 2019
Filing Date:
February 25, 2019
Export Citation:
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Assignee:
YAZAKI ENERGY SYSTEM CORP (JP)
International Classes:
G02B5/00; E06B3/663; E06B5/00
Domestic Patent References:
WO2016185684A12016-11-24
WO2014147793A12014-09-25
WO2014080910A12014-05-30
Foreign References:
JP2017161735A2017-09-14
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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