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Filter for laser protection
A method of forming a filter, comprising the steps of: —selecting at least a first wavelength corresponding to a predetermined laser threat and having a first colour in the visible spectrum; —providing a generally transparent substrate and forming a first notch filter region therein configured to substantially block incident radiation thereon of wavelengths within a first predetermined wavelength band including said first wavelength; —selecting a second wavelength having a second colour in the visible spectrum and forming a colour balancing notch filter region in said substrate configured to block incident radiation thereon of wavelengths within a wavelength band including said second wavelength, thereby to balance or neutralise any colour distortion of said substrate caused by said first notch filter region.
Filter for laser protection
A method of forming a filter, comprising the steps of: —selecting at least a first wavelength corresponding to a predetermined laser threat and having a first colour in the visible spectrum; —providing a generally transparent substrate and forming a first notch filter region therein configured to substantially block incident radiation thereon of wavelengths within a first predetermined wavelength band including said first wavelength; —selecting a second wavelength having a second colour in the visible spectrum and forming a colour balancing notch filter region in said substrate configured to block incident radiation thereon of wavelengths within a wavelength band including said second wavelength, thereby to balance or neutralise any colour distortion of said substrate caused by said first notch filter region.
Filter for laser protection
BLACK DANIEL BENJAMIN (author) / LAYCOCK LESLIE CHARLES (author)
2020-11-24
Patent
Electronic Resource
English
IPC:
G02B
Optische Elemente, Systeme oder Geräte
,
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
/
A61F
FILTERS IMPLANTABLE INTO BLOOD VESSELS
,
Filter in Blutgefäße implantierbar
/
B60J
WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES
,
Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge
/
B64C
AEROPLANES
,
Flugzeuge
/
E06B
Feste oder bewegliche Abschlüsse für Öffnungen in Bauwerken, Fahrzeugen, Zäunen oder ähnlichen Einfriedungen allgemein, z.B. Türen, Fenster, Läden, Tore
,
FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES, OR LIKE ENCLOSURES, IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
/
G02C
SPECTACLES
,
Brillen
/
G03F
Fotomechanische Herstellung strukturierter oder gemusterter Oberflächen, z.B. zum Drucken, zum Herstellen von Halbleiterbauelementen
,
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES
/
G03H
Holografische Verfahren oder Vorrichtungen
,
HOLOGRAPHIC PROCESSES OR APPARATUS