Laser objective lens shield

Details Laser objective lens shield Laser objective lens shield

1991-06-07

1992-09-15

Scott, Jr., Leon

Coherent light generators

Miscellaneous

372101, 359511, H01S 300

Patent

active

051484463

ABSTRACT:
A laser objective lens shield for preventing ejecta from a target object from impacting the objective lens has an inner and an outer conical structure that nest concentrically together. The inner conical structure has a plurality of orifices that are orthogonal to the conical axis, which is aligned with the lasing axis, and the outer conical structure has a fluid port by which a pressurized fluid hose may be coupled to the shield. Both conical structures have an exhaust aperture opposite the orifices and port, respectively. When the conical structures are nested together the edge around the exhaust apertures is sealed by suitable means, such as foam tape, so that a plenum chamber is formed between the orifices and the fluid port. Pressurized air introduced at the fluid port becomes a laminar air flow from the orifices orthogonal to the lasing axis to deflect ejecta away from the laser objective lens out the exhaust aperture.

REFERENCES:
patent: 5048050 (1991-09-01), Komurasaki
patent: 5084883 (1992-01-01), Khalid et al.

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