(19)
(11) EP 0 563 314 A1

(12)

(43) Date of publication:
06.10.1993 Bulletin 1993/40

(21) Application number: 92904127.0

(22) Date of filing: 18.12.1991
(51) International Patent Classification (IPC): 
G01J 3/ 20( . )
G01J 3/ 40( . )
G02B 6/ 34( . )
G01J 3/ 18( . )
G01J 3/ 36( . )
G01J 3/ 28( . )
G02B 6/ 32( . )
G01J 3/ 02( . )
G01J 3/ 24( . )
(86) International application number:
PCT/US1991/009634
(87) International publication number:
WO 1992/011517 (09.07.1992 Gazette 1992/17)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE

(30) Priority: 21.12.1990 US 19900631898

(71) Applicant: THE BOEING COMPANY
Seattle, Washington 98108 (US)

(72) Inventors:
  • BERANEK, Mark, W.
    Bellevue, WA 98007 (US)
  • CAPRON, Barbara, A.
    Issaquah, WA 98027 (US)
  • HUGGINS, Raymond, W.
    Mercer Island, WA 98040 (US)
  • GRIFFITH, David, M.
    Renton, WA 98059 (US)
  • LIVEZY, Darrell, L.
    Renton, WA 98059 (US)
  • TRAYNOR, Timothy
    Redmond, WA 98053 (US)

(74) Representative: Spall, Christopher John, et al 
BARKER, BRETTELL & DUNCAN 138 Hagley Road
Edgbaston Birmingham B16 9PW
Edgbaston Birmingham B16 9PW (GB)

   


(54) PLANAR WAVEGUIDE SPECTROGRAPH