Some miscellaneous info:
found this little tidbit at the following website. It is old, but it is interesting, and the references at the bottom are all MVIS, so I guess we're on top of this issue.
onr.navy.mil
OBJECTIVE: Develop and test head mounted displays (HMD) with gravity
stabilization to counter motion sickness.
DESCRIPTION: Console operators in shipboard, land vehicle and airborne
environments may suffer motion sickness when the vehicles are unstable
while moving. The theory holds that conflict between visual orientation
cues and orientation signals from the inner ear motion sensors (the
vestibular apparatus) causes motion sickness. For example, in an
interior room on a ship, the visual cues indicate that the room is
stationary, but, as the ship pitches and rolls, the inner ear cues
signal motion. If the operator viewed a gravity stabilized view in a
head mounted display, visual and vestibular cues would be the same and
motion sickness would be averted. As the ship moved, the orientation of
the gravity vector would be directed to the display driver and the
display would be altered appropriately. An alternative method of
providing orientation cues may be to maintain the display screen
orientation fixed in the HMD display screen, but provide a peripheral
cue to orientation. Depending on the results of the first phase of
testing this option may be pursued for closer examination. Companies
are strongly encouraged to use existing HMDs rather than developing new
ones so that the technology development can focus on testing and
integration of orientation cues into the display.
PHASE I: Design proof of concept HMD and do controlled experiments
in a simulator with a motion base. Test various movement sensors,
filtering paradigms, display tilt modes, etc. to determine required and
optimal values.
PHASE II: Conduct extensive testing in actual moving environments
including ships, land vehicles, aircraft to further optimize of the
movement sensors, filtering and cues. Determine characteristics
appropriate to each environment tested. Test the option of allowing
individual crew members to select system characteristics to accommodate
variability in susceptibility to motion sickness. Demonstrate prototype
technology including the HMD, head movement sensor, and demonstration
software.
PHASE III: Production for sale to Navy and other government
agencies.
COMMERCIAL POTENTIAL: The display would be applicable to any situation in which motion sickness has the potential of interfering with operator
or passenger performance or comfort.
REFERENCES:
1. Johnston, R. and Willey, S. (1995). Proceedings of Helmet- and
Head-Mounted Displays and Symbology Design Requirements. SPIE Volume
2465 (pp. 2-13). Bellingham, WA: SPIE.
2. Kollin, J. and Tidwell, M. (1995). "Optical Engineering Challenges
of the Virtual Retinal Display." Proceedings of the SPIE, Volume 2537
(pp. 48-60). Bellingham, WA: SPIE.
The competition beaten by MVIS in the Navy's selection of VRD as baseline:
(1) onr.navy.mil
Kopin Corporation
695 Myles Standish Blvd.
Taunton, MA 02780
Project Manager: Dr. Hiap Ong508-870-5959
Active Matrix Displays Using Spatial Light Modulation Technology In Place of Liquid Crystal
High pixel count display operation at high frame rates requires high frequency display circuits and a fast light modulation media. Kopin's AMLCD display technology utilizes fast CMOS circuits fabricated in single crystal silicon, which are superior to circuits fabricated in poly-crystaline silicon and amorphous silicon. Display circuits are fabricated on SOI wafers in conventional CMOS integrated circuit foundries with the same performance as CMOS ICs. Kopin currently has operational 1280x1024 pixel displays and 2560x2048 pixel displays in development which operate at 60 Hz frame rates. Higher frame rates displays are in development, with the LC response being the major limiting factor. Foster Miller has developed a SLM technology which employs light polarization in the same manner as TN LCDs. Response times < 500 usec and contrast ratios > 100 have been demonstrated. We propose to use Kopin displays filled with this fast SLM technology to achieve high resolution images at high frame rates.
(2) frwebgate4.access.gpo.gov
[Commerce Business Daily: Posted June 23, 1997]
From the Commerce Business Daily Online via GPO Access
[cbdnet.access.gpo.gov]
PART: U.S. GOVERNMENT PROCUREMENTS
SUBPART: SUPPLIES, EQUIPMENT AND MATERIAL
CLASSCOD: 69--Training Aids and Devices--Potential Sources Sought
OFFADD: U.S. ARMY ATCOM, CMPSC, INSTAL CONTRACT DIV, ATTN: AMSAT-A-PMD,
BLDG 100 2ND FL ROOM 203, GRANITE CITY IL 62040-1801
SUBJECT: 69--HMD/SYSTEM FULL COLOR VGA RESOLUTION SEE-THROUGH
HMD SYSTEM 50ST, HEAD MOUNTED DISPLAY SYSTEM, FOR USE W/IN
A VIRTUAL SIMULATOR COCKPIT DEVICE, MAKE: KAISER-PROVIEW MODEL
NO. 50ST "OR EQUAL"
SOL W81T3L-7157-1000
POC Purchasing Agent Rita Hearn (618) 452-4366 FAX (618) 452-4322
OR 452-4476 (Site Code DAAJ04)
DESC: Purchase of two (2) each Helmet Mounted Display (HMD)/System
Full Color VGA Resolution See-Through HMD System 50ST Head
Mounted Display System for use w/in a Virtual Simulator Cockpit
Device, MAKE: Kaiser-Proview Model No. 50ST "or equal". The
Comanche Program Management Office is currently using the Kaiser
Electro-Optics Inc. "Wide Eye 40" Model Helmet for the front
and back seat positions. Contractors may receive a copy of
the solicitation and Statement of Work by sending a written
request to the US Army Charles Melvin Price Support Center,
ATTN: AMSAT-A-PMD (Rita Hearn), 100 First Street, Granite City,
IL 62040-1801, or you may fax your written request to (618)
452-4322 or (618) 452-4476. No telephone requests will be accepted.
Please ensure your complete mailing Address, Point of Contact,
Telephone number, Fax number, Contractor Establishment Code
(CEC) and Cage Code Number are provided in your request. Purchase
Request Number W81T3L-7157-1000 must also be referenced in
your request. Estimated amount of this project is between $25,000.00
and $100,000.00.
Note: The ProView 50ST virtualrealitysource.com, costs $49,500 today, virtualrealitysource.com. |
