NASA SBIR 02-1 Solicitation


PROPOSAL NUMBER:02- H2.02-7631 (For NASA Use Only - Chron: 024368 )
SUBTOPIC TITLE: Human Centered Computing
PROPOSAL TITLE: A Head Mounted Display Without Focus/Fixation Disparity

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Dimension Technologies Inc
315 Mt Read Blvd
Rochester , NY   14611 - 1982
(585 ) 436 - 3530

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Jesse Eichenlaub
315 Mt Read Blvd
Rochester , NY   14611 - 1982
(585 ) 436 - 3530

This small Business Innovation Research Phase I Project will investigate a method of eliminating the focus/fixation disparity in a head mounted display. The disparity between focus and fixation points in head mounted stereoscopic viewing systems often creates a problem for the viewer in terms of eyestrain, defocused images, or inability to fuse images. Such problems show up most when objects are represented across a wide range of distances from the user, or when the system is used to superimpose virtual information onto real world scenes. Past attempts at matching the focus and fixation distance in head mounted displays have involved complicated servo mechanisms and eye trackers to change the apparent distance to the screen as the observer gazes at different areas of the scene. This proposed project will demonstrate a novel, less complicated way of creating images in which the focus and fixation distances are matched for objects from several inches to infinity without using eye tracking, measuring equipment, or moving parts. The proposed device will create several convergent ray bundles for each displayed image point in such a way that the bundles all intersect to form a light point at a distance that is coincident with the fixation distance.

The technology to be investigated in this proposal could find application in head mounted virtual reality systems for simulation applications, particularly vehicle simulations, plus head mounted enhanced reality systems in which graphics and information is superimposed on a direct view of the real world for training, education, navigation for delivery personnel, recreational travel, etc.

Broadly speaking, the most likely applications for this technology within NASA are in a) simulator and training environments in which expense or space constraints favor the use of head mounted VR devices as opposed to domes or out the window configurations, especially in situations where close in objects such as the cockpit interior or hand manipulated items must be presented, and b) inspection and maintenance scenarios where information is superimposed on real world, close by objects.

Form Printed on 09-05-02 10:10