Catalogue No: | C0379 |
---|---|
Category: | Head-Mounted Equipment [HMD/NVG/Glasses] |
Object Type: | Module/Sub-Assembly/Component |
Object Name: | Visor with Dichroic patch |
Part No: | None |
Serial No: | None |
Manufacturer: | Unknown |
Division: | Unknown |
Platform(s): | |
Year of Manufacture: | Unknown |
Dimensions: |
Width (mm): 250 Height (mm): 135 Depth (mm): 160 Weight (g): 245 |
Location: | Rack RAA15 (HMDs) [Mezzanine Store] |
None
This is an example of a visor with a dichroic patch deposited on the inside of the polycarbonate visor. A dichroic patch is a thin-film filter also called an interference filter and it is a very accurate colour filter used to selectively pass light from the outside world while reflecting the narrow band from the symbology display (usually green although early LED Sights were red). The patch is usually seen on a Helmet Mounted Sight and reflects the image source to the right eye. If the symbology source is a green phosphor the outside world may gain a slight pinkish hue over the area of the patch where the green is taken out of the spectrum. This visor may be from the Jaguar Helmet Mounted Sight