Title:
The temperature response change type light filter incorporating refractivity optical structure
Document Type and Number:
Japanese Patent JP6073395
Kind Code:
B2
Abstract:
A thermochromic, thermotropic, or thermoreflective filter relies on a mismatch between the index of refraction of a thermotropic material (e.g., a liquid crystal) and a substrate material that includes refractive or diffractive features. At colder operating temperatures, the refraction mismatches are eliminated or minimized such that the filter becomes transparent, whereas at high operating temperatures the refraction mismatches are increased such that for light at appropriate incidence angles, the structure becomes highly reflective. This filter has particular but not exclusive application as a temperature-controlled "smart mirror" for use in windows, walls, roofing, and other building materials.
Inventors:
Will McCarthy
Richard M. Powers
Richard M. Powers
Application Number:
JP2015036507A
Publication Date:
February 01, 2017
Filing Date:
February 26, 2015
Export Citation:
Assignee:
Ravenbrick, LRC
International Classes:
G02B5/26; E06B9/24; G02B5/22; G02F1/13; G02F1/19
Domestic Patent References:
| JP6082742A | ||||
| JP2003502693A | ||||
| JP7239484A | ||||
| JP2011522277A | ||||
| JP2010533252A |
Foreign References:
| WO2009005133A1 | ||||
| US20090167971 | ||||
| US20090015902 |
Attorney, Agent or Firm:
Kazunori Kurusu
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