US4869575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headwear-mounted periscopic display device
Assignee: IOTA TECHNOLOGIES Inc
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Filing: 1988-04-01
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Granted: 1989-09-26
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Expires: 2008-04-01
Abstract
Abstract A periscopic display device for close-up viewing of a display. The device includes means for generating a display, such as an LED, LCD, or ELD display, and periscopic means consisting of a body of optically clear material having a reflecting prism portion and a collimating lens portion. The prism portion includes a first planar surface positioned adjacent to the display and at least one optically aligned reflecting surface for transmitting a reflected image of the display. The collimating lens portion consists of a convex lens having a focal point at the display and is positioned to receive the reflected image for focusing the image at optical infinity. Preferably the body includes a mounting portion in which the display generating means is embedded. The display device is lightweight, waterproof, dustproof, and is easily mounted on the eyeglass frames, visor, or headband of the wearer.
Inventors
- 👤 James C. Kubik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:18
CPC Classifications
G; G02; G02C; G02C9/00; G02C9/04; G02C7/00; G02C7/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A display device positionable on the eyeglass frames or other headwear of the user, said display device comprising: a display generating means; a body of optically clear material having a first surface, means for positioning the display generating means adjacent the first surface, said body having at least one optically-aligned reflecting surface for transmitting a reflected image of the display, and said body having a convex lens with a focal point at the display, said lens receiving the reflected image and focusing the image at optical infinity, wherein the display generating means and body are positionable on the eyeglass frames or other headwear of the user for positioning the assembly within the peripheral viewing field of the user to enable close-up viewing of the display.
Claim 2
Dependent Claim
125 words
A display device positionable on the eyeglass frames or other headwear of the user, said display device comprising: a display generating means; a body of optically clear material having a first surface, means for positioning the display generating means adjacent the first surface, said body having at least one optically-aligned reflecting surface for transmitting a reflected image of the display, and said body having a convex lens with a focal point at the display, said lens receiving the reflected image and focusing the image at optical infinity, wherein the display generating means and body are positionable on the eyeglass frames or other headwear of the user for positioning the assembly within the peripheral viewing field of the user to enable close-up viewing of the display.
Claim 3
Dependent Claim
23 words
The display device of claim 1, further comprising: means for mounting the assembly on the eyeglass frames or other headwear of the user.
Claim 4
Dependent Claim
29 words
The display device of claim 2, wherein the assembly is mounted on the eyeglass frames of the user and positioned in front of one lens of the eyeglass frames.
Claim 5
Dependent Claim
27 words
The display device of claim 1, wherein the outer surfaces of the body are mirrored to reduce light loss and prevent ambient light from entering the body.
Claim 6
Dependent Claim
16 words
The display device of claim 1, wherein the display generating means is an electro-optical display means.
Claim 7
Dependent Claim
22 words
The display device of claim 1, wherein the body further comprises a mounting portion in which the display generating means is embedded.
Claim 8
Dependent Claim
13 words
The display device of claim 1, wherein the body has one reflecting surface.
Claim 9
Dependent Claim
13 words
The display device of claim 1, wherein the body has two reflecting surfaces.
Claim 10
Dependent Claim
24 words
The display device of claim 1, wherein the convex lens has a focal length within the range of about 3/4 to about 13/4 inch.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |