(19)
(11) EP 0 495 874 A1

(12)

(43) Date of publication:
29.07.1992 Bulletin 1992/31

(21) Application number: 90915543.0

(22) Date of filing: 02.10.1990
(51) International Patent Classification (IPC): 
H01S 5/ 0687( . )
H01S 5/ 0683( . )
(86) International application number:
PCT/SE1990/000633
(87) International publication number:
WO 1991/006141 (02.05.1991 Gazette 1991/10)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB IT LI LU NL SE

(30) Priority: 13.10.1989 SE 19890003363

(71) Applicant: MARTIN, Hans
S-820 60 Delsbo (SE)

(72) Inventor:
  • MARTIN, Hans
    S-820 60 Delsbo (SE)

(74) Representative: Lindblom, Erik J. 
Flotthamn
S-150 23 Enhörna
S-150 23 Enhörna (SE)

   


(54) APPARATUS FOR STABILIZING THE WAVELENGTH OF A SIGNAL-MODULATED LIGHT BEAM