National Imagery & Mapping Agency

70 -- SOURCES SOUGHT FOR MONITORS WITH DUAL MONOSCOPIC AND STEREOSCOPIC CAPABILITY SOL NA POC Technical POC, Bob DeRoche (301) 227-2621 Then National Imagery & Mapping Agency (NIMA) is seeking sources for monitors with dual monoscopic and stereoscopic viewing capability as follows: Both the monoscopic and stereoscopic viewing capabilities of the monitor will be capable of displaying at least 1024 x 1024 screen pixels in the active image area. The monitor shall not degrade the original image quality more than 0.1 NIIRS during image and display processing. The monitor dimensions will be at least 19" wide by 19" high and shall have a depth no greater than 25". The monitor shall have modulator and monitor view areas of at least 15" wide by 11" high and diagonal viewing dimension of at least 19". The monitor shall be compatible with SUN Ultra workstations as well as SGI Octane and O2 workstations. The monitor shall have a value for jitter, swim, and drift of no greater than 2.0 mils measured vertically and 2.0 mils measured horizontally. The monitor will have a refresh rate of at least 120 frames per second for stereoscopic viewing and at least 75 frames per second for monoscopic viewing. The video drive Digital-to-Analog Converter (DAC) bit depth requirement shall be at least 10 bits. The monitor shall have the capability to be adjusted for calibration corrections. The monitor shall not cause any noticeable noise or vibration. Indicated below are the specific capabilities for each mode of viewing: Stereoscopic Viewing: The monitor must have the capability to display stereo imagery in both pseudo stereo and reverse stereo over the entire active image area. Stereoscopic viewing shall not reduce the operator's view of the active image area of the stereoscopic display. Stereoscopic viewing shall not cause visual flicker from any monitor screen adjacent to the stereoscopic screen, within the operator's work area. Stereoscopic viewing shall not preclude an operator from wearing personal eyeglasses (i.e., Capability shall be provided for clip-on polarized glasses as well as standard polarized glasses). Stereoscopic viewing shall be in the passiverather than the active mode. Specifically in a passive mode, the operator wears regular polarized sunglasses to view stereo-scopically. When the operator turns away from the monitor, the operator's vision is normal and unobstructed. In the active mode, an infrared device is mounted on top of the monitor and goggles are worn by the operator to view stereo-scopically. When the goggles sense that they are in range (operator facing the monitor), the goggles are activated. However, when the operator turns away from the monitor, the goggles are deactivated and one eye of the goggles is closed. Also, the operator using an active mode sees a bad flicker on monitors on which the refresh rate cannot be adjusted. The total part of the stereoscopic viewing system worn by the operator shall not be tethered to the monitor or any workstation. The weight of the polarized glasses shall not exceed 30 grams (1.06 ounces) for the standard polarized glasses and 10 grams (.35 ounces) for the clip-on polarized glasses. The stereoscopic viewing capability of the monitor shall support viewing by an operator positioned at plus or minus 10 degrees above or below the normal to centerline of the screen, by an operator with head inclined plus or minus 10 degrees from a vertical plane with respect to the screen, and by an operator positioned at plus or minus 20 degrees to either side of the normal to the centerline of the screen. The extinction ratio shall be greater than or equal to a 20:1 on-to-off ratio for each eye as integrated over the visible spectrum from the image source. 10. The stereoscopic viewing capability shall operate in an interlaced (page flipping) or picture over picture functional mode. Monoscopic Viewing: Maximum Luminance shall be at least 35 foot-lamberts. Minimum Luminance shall be no greater than 0.10 foot-lamberts. For monoscopic viewing, the monitor shall have a difference in flatfield luminance measured between the center and any edge location not to exceed 15% when the flatfield is driven 75% of a maximum luminance of 35 foot-lamberts. For monoscopic viewing, the monitor shall have a difference in flatfield luminance measured between locations on any two edges not to exceed 15% when the flatfield is driven 75% of a maximum luminance of 35 foot-lamberts. Monoscopic viewing of stereo imagery shall be allowable so that either image in an image pair can be seen separately with both eyes. Please mail product information to NIMA, Attn: Bob DeRoche, FNIC, MS D-85, 4600 Sangamore Road, Bethesda, MD 20816-5003. Any technical questions can be directed to Mr. DeRoche on (301) 227-2621. Posted 11/20/98 (I-SN273325). (0324)

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