EP0381449A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Heads up display for night vision goggle
Assignee: Systems Research Laboratories Inc
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Filing: 1990-01-30
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Granted: —
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Expires: 2010-01-30
Abstract
Abstract Conventional night vision goggles are, according to the invention, provided with heads up display information at the same focus and in the same field of view as the intensified image. The heads up display information is typically generated by a remotely located cathode ray tube and transferred to the goggles (10) by a fiber optic cable (35). This information is introduced from a beam expander or taper (37) into one of the eyepieces (20), which eyepiece is modified to include an image combiner (45) placed inside its outer lens (52) in order to provide substantially the same eye relief and physical dimensions as an unmodified eyepiece. The image combiner includes a partially reflective mirror (46). Additional lenses (41, 42, 43) are provided between the heads up display from the beam expander (37), and the beam combiner (45), to ensure that this additional information is presented to the eye at the same focus as the intensified image.
Inventors
- 👤 James Riddell Iii
- 👤 David C. Lambertson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 19:54
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/14; G02B27/00; G02B27/01; G02B27/0101; G02B23/02; G02B23/10; G02B23/12; G02B23/125; G02B27/0149; G02B2027/0138; G02B2027/0154
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
In a night vision goggle including an objective lens, an image intensifier for receiving an image focused thereon by the objective lens, an eyepiece having an outer lens for focusing the image of said image intensifier on the eye, the improvement comprising means for introducing an additional image for viewing by the operator at the same focus as the intensified image, including means for displaying the additional image, and image combiner means placed between the image intensifier and the eyepiece outer lens for combining said additional image with the intensified image.
Claim 2
Dependent Claim
91 words
In a night vision goggle including an objective lens, an image intensifier for receiving an image focused thereon by the objective lens, an eyepiece having an outer lens for focusing the image of said image intensifier on the eye, the improvement comprising means for introducing an additional image for viewing by the operator at the same focus as the intensified image, including means for displaying the additional image, and image combiner means placed between the image intensifier and the eyepiece outer lens for combining said additional image with the intensified image.
Claim 3
Dependent Claim
149 words
An attachment for an existing night vision goggle assembly for including a heads-up display of additional information at the same focus as the operator is viewing an intensified image, wherein the goggles include a housing, a pair of objective lenses, image intensifiers for receiving the image in the field of view focused thereon by said objective lenses, and a pair of eyepiece housings each including at least an outer lens for directing the intensified image into the eyes of the wearer, said attachment including means for modifying at least one of said eyepiece housings to include an image combiner positioned within the boundaries of the housing, means for generating an image of additional information to be presented to the wearer, said image generating means being positioned with respect to said image combiner thereby to present the additional image to the wearer at the same focus as the intensified image.
Claim 4
Dependent Claim
149 words
An attachment for an existing night vision goggle assembly for including a heads-up display of additional information at the same focus as the operator is viewing an intensified image, wherein the goggles include a housing, a pair of objective lenses, image intensifiers for receiving the image in the field of view focused thereon by said objective lenses, and a pair of eyepiece housings each including at least an outer lens for directing the intensified image into the eyes of the wearer, said attachment including means for modifying at least one of said eyepiece housings to include an image combiner positioned within the boundaries of the housing, means for generating an image of additional information to be presented to the wearer, said image generating means being positioned with respect to said image combiner thereby to present the additional image to the wearer at the same focus as the intensified image.
Claim 5
Dependent Claim
161 words
An attachment for an existing night vision goggle assembly for presenting a heads-up display of additional information at the same focus and in the same field of view as the intensified image generated by the night vision goggles, wherein the goggles include a pair of objective lenses, a pair of image intensifiers for receiving the images in the field of view focused thereon by said objective lenses, and a pair of eyepieces each including a housing containing an inner lens and an outer lens for directing the intensified image into the eyes of the wearer, said attachment including means for modifying at least one of said eyepieces to include a image combiner positioned between the eyepiece inner and outer lenses, means for generating a real image of additional information to be presented to the wearer, and focusing means for presenting said additional image to the wearer at the same focus and in the same field of view as the intensified image.
Claim 6
Dependent Claim
161 words
An attachment for an existing night vision goggle assembly for presenting a heads-up display of additional information at the same focus and in the same field of view as the intensified image generated by the night vision goggles, wherein the goggles include a pair of objective lenses, a pair of image intensifiers for receiving the images in the field of view focused thereon by said objective lenses, and a pair of eyepieces each including a housing containing an inner lens and an outer lens for directing the intensified image into the eyes of the wearer, said attachment including means for modifying at least one of said eyepieces to include a image combiner positioned between the eyepiece inner and outer lenses, means for generating a real image of additional information to be presented to the wearer, and focusing means for presenting said additional image to the wearer at the same focus and in the same field of view as the intensified image.
Claim 7
Dependent Claim
23 words
The attachment of claim 3 wherein said focusing means includes at least one lens positioned between said additional image and said beam combiner.
References Cited (Backward Citations)
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