Title:
TRANSPARENT SPINEL SINTERED BODY, OPTICAL MEMBER AND METHOD FOR PRODUCING TRANSPARENT SPINEL SINTERED BODY
Document Type and Number:
WIPO Patent Application WO/2018/066636
Kind Code:
A1
Abstract:
Provided is a transparent spinel sintered body which is formed from an Mg-Al spinel powder having an Al/Mg ratio of from 1.97 to 2.03 or a mixed powder of an Mg oxide and an Al oxide, and wherein the total content of metal impurities excluding Al and Mg is less than 100 ppm. A sample of this transparent spinel sintered body having a thickness of 3 mm has a total light transmittance of 80% or more in the thickness direction for the wavelength range of from 190 nm to 400 nm; and this transparent spinel sintered body is usable as a medium that transmits light from an ultraviolet light emitting element.
Inventors:
IKARI MASANORI (JP)
Application Number:
PCT/JP2017/036237
Publication Date:
April 12, 2018
Filing Date:
October 05, 2017
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
C04B35/443; G02B1/02
Domestic Patent References:
| WO2009128269A1 | 2009-10-22 |
Foreign References:
| JPH04502748A | 1992-05-21 | |||
| JP2008098217A | 2008-04-24 | |||
| JP2014102485A | 2014-06-05 | |||
| JP2008081377A | 2008-04-10 | |||
| JP2016006832A | 2016-01-14 | |||
| JP2016049519A | 2016-04-11 | |||
| JPS5435397B2 | 1979-11-02 | |||
| JPS4830911B1 | 1973-09-25 | |||
| JP2015061813A | 2015-04-02 | |||
| JP5563766B2 | 2014-07-30 |
Other References:
See also references of EP 3524586A4
Attorney, Agent or Firm:
PATENT PROFESSIONAL CORPORATION EI-MEI PATENT OFFICE (JP)
Download PDF:
Previous Patent: CRYSTALLIZED GLASS SEALING MATERIAL
Next Patent: POLYARYLENE SULFIDE RESIN COMPOSITION, MOLDED ARTICLE, AND PRODUCTION METHOD
Next Patent: POLYARYLENE SULFIDE RESIN COMPOSITION, MOLDED ARTICLE, AND PRODUCTION METHOD