Night vision goggles compatible with full color display

• US 6,467,914 B1
• Filed: 10/10/1985
• Issued: 10/22/2002
• Est. Priority Date: 10/10/1985
• Status: Expired due to Term

• Current Assignee: Alliedsignal Technologies Inc. (Honeywell International Inc.), Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Cohen, Richard L., Scoughton, Craig R.
• Primary Examiner(s): Buczinski, Stephen C.
• Application Number:
  US06/786,269
• Time in Patent Office: 6,221 Days
• Field of Search: 340/705, 340/815.41, 340/945, 350/174, 343/5.CD, 359/634, 359/229, 359/601, 345/8, 250/214.LA
• US Class Current: 359/601
• CPC Class Codes: G02B 23/125 head-mounted

Abstract

An ANVIS aid, such as an ANVIS goggles set, with a first optical filter is described. A second optical filter blocking light in an opposite sense from the first optical filter is placed at a color display, which may otherwise present offending light that would interfere with the ANVIS.

Claims

1. A display system for use in association with a light amplifying passive night vision aid and a local color display including a local source of light, comprising:

(a) a first optical filter that filters light from the local color display, wherein said first optical filter is a notch filter that passes light comprising predetermined color bands including a predetermined red color band and that substantially blocks light associated with color bands other than said predetermined color bands; and

(b) a second optical filter that filters light at the night vision aid, wherein said second optical filter substantially blocks light of at least said predetermined red color band.

2. A display system for use in association with a light amplifying passive night vision aid and a local color display including a local source of light having blue, red, and green color bands, comprising:

(a) a plurality of filters at the local color display including

(1) a first filter for filtering the blue color band of the local source of light;

(2) a second filter for filtering the green color band of the local source of light; and

(3) a third filter for filtering the red color band of the local source of light and passing a narrowband of the red color band; and

(b) a fourth filter which filters light at the night vision aid, said fourth filter cooperating with said plurality of filters to substantially block at least said narrowband of the red color band from being admitted to the night vision aid.

3. The display system of claim 2 wherein said narrowband of the red color band is substantially five to twenty nanometers wide.