G - Physics – 03 – H
Patent
G - Physics
03
H
88/97, 88/0.1
G03H 1/02 (2006.01) G02B 5/32 (2006.01) G02B 6/28 (2006.01)
Patent
CA 1119851
ABSTRACT OF THE DISCLOSURE A provisional holographic lens Hl is recorded by causing the interference of a parallel reference beam with a divergent beam emitted from an optical fibre 27, and then a definitive holographic lens H2 is recorded by causing the divergent beam reconstructed by illuminating the provisional holographic lens by the reference beam to interfere with the beam emitted by an optical fibre 31. The definitive holographic lens H2 and the ends of the fibres 27 and 31 are embedded in a block of hardenable transparent synthetic material. The provisional holographic lens Hl may be positioned externally of this block or be enclosed with the other elements in this same block. This process in particularly advantageous, because it permits certain delicate optical adjustments to be eliminated and because it avoids certain causes of light loss. Figure 1
340334
Cabloptic S.a.
Kirby Eades Gale Baker
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