US5757339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Head mounted display
Assignee: RPX Corp
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Filing: 1997-01-06
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Granted: 1998-05-26
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Expires: 2017-01-06
Abstract
Abstract A Head Mounted Display (HMD) having both single viewing capability and group viewing capability is provided. The eyepiece of the HMD can be either converted to a group viewing projector or can be replaced or interchangeable with a group viewing unit.
Inventors
- 👤 John W. Williams
- 👤 Michael D. Jenkins
- 👤 Peter A. Ronzani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:31
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/01; G02B27/017; G02B27/0172; G02B27/0176; G02B2027/0178
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
46 words
A head mounted display (HMD) comprising a detachable eyepiece unit, said head mounted display also containing means to receive in place of said detachable eyepiece unit a projector unit, said projector unit having means to project for group viewing any display viewable on said eyepiece unit.
Claim 2
Dependent Claim
46 words
A head mounted display (HMD) comprising a detachable eyepiece unit, said head mounted display also containing means to receive in place of said detachable eyepiece unit a projector unit, said projector unit having means to project for group viewing any display viewable on said eyepiece unit.
Claim 3
Dependent Claim
19 words
The head mounted display of claim 1 wherein said HMD is used in a body worn, mobile computer system.
Claim 4
Dependent Claim
26 words
The head mounted display of claim 1 wherein said projector unit is composed of replacement components used in place of removable components of said eyepiece unit.
Claim 5
Dependent Claim
40 words
The head mounted display of claim 1 wherein said projector unit is a projector housing containing substantially all of the conventionally necessary components of a projector, and can interchangeably, with said eyepiece, fit on a corresponding portion of said HMD.
Claim 6
Dependent Claim
30 words
The head mounted display of claim 1 wherein said projector unit has a stand for said projector unit which can be adjusted to alter a height of said projector unit.
Claim 7
Dependent Claim
27 words
The head mounted display of claim 1 wherein said projector unit comprises a display means, a focus lens, a condensing lens, a light source and a fan.
Claim 8
Dependent Claim
36 words
The head mounted display of claim 1 wherein said eyepiece unit is convertible into a projector unit by the removal of components from said eyepiece unit and replacing them with components necessary for a projector unit.
Claim 9
Dependent Claim
29 words
The head mounted display of claim 1 wherein said HMD has the same means therein for attachment to a single viewing eyepiece or to a group viewing projector means.
Claim 10
Dependent Claim
109 words
A head mounted display comprising means to be used as either or both a single viewing display means, or means to be used as a group viewing display means, said single viewing display means comprising a conventional eyepiece display means used on an HMD for wearer viewing, said group viewing display means comprising a projector unit, each of said eyepiece and said projector being electrically connected to any signal source, including a computer, processor or other image producing means and wherein said eyepiece unit is convertible into a projector unit by the removal of components from said eyepiece unit and replacing them with components necessary for a projector unit.
Claim 11
Dependent Claim
109 words
A head mounted display comprising means to be used as either or both a single viewing display means, or means to be used as a group viewing display means, said single viewing display means comprising a conventional eyepiece display means used on an HMD for wearer viewing, said group viewing display means comprising a projector unit, each of said eyepiece and said projector being electrically connected to any signal source, including a computer, processor or other image producing means and wherein said eyepiece unit is convertible into a projector unit by the removal of components from said eyepiece unit and replacing them with components necessary for a projector unit.
References Cited (Backward Citations)
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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) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |