| Visual Acuity with and without Binoculars through Thick Observation Tower Windows |
SEP 1982 |
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| Authors:
Herschel C. Self; Steve A. Heckart; AIR FORCE AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
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 | Daytime visual acuity with and without hand-held M-19 7x50 binoculars was tested inside and outside of the cab of a Master Surveillance Control Facility (MSCF) Tower at Eglin AFB outfitted laminated transparent armor windows. There windows were tested, one with 13 observers and two with 5 observers. High, medium, and low contrast tri-bar resolution charts were used 400 feet from the base of the tower. Observers selected the smallest resolvable ... |
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| Daytime Visual Acuity of Observers through a Window with and without Binoculars. |
JUL 1979 |
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| Authors:
Herschel C. Self; Steve A. Heckart; AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OH
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| Visual acuity with and without hand-held M-19 7x50 binoculars was tested inside and outside of the cab of a Master Surveillance Control Facility (MSCF) Tower. High, medium and low contrast 3-bar resolution test charts were used at a 400-foot distance. Except for low contrast bar patterns, where loss was not large, unaided eye visual acuity was not impaired by cab windows. With binoculars there was a statistically significant, though not ... |
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| Airbourne Visual Reconnaissance with Yellow Sunglasses, |
JUN 1971 |
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| Authors:
Steve A. Heckart; E. P. Hanavan; James L. Porterfield; Herschel C. Self; Don F. McKechnie; AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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| The study investigated airborne visual reconnaissance with and without yellow sunglasses under conditions of moderate haze and high ambient, midday illumination. One group of five observers wore Bausch and Lomb Kalichrome C yellow glasses. A second group of five observers did not wear yellow glasses. The observers searched from the side scanner stations of a B-50 aircraft for tactical target sites located on rolling farm and woodland terrain. The aircraft ... |
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| Airborne Visual Reconnaissance as a Function of Illumination Level. |
JUN 1971 |
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| Authors:
James L. Porterfield; Herschel C. Self; Steve A. Heckart; E. P. Hanavan; Don F. McKechnie; AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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| An investigation was made of inflight visual detection of ground target sites and identification of specific targets as a function of apparent scene illumination. Individual from three groups of six subjects each searched for tactical target sites in rolling farm and woodland, and identified and counted the targets at the sites located. One group observed under full sunlight illumination, a second group wore goggles with neutral density filters that cut ... |
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| Visual Reconnaissance from the Nose Versus Side Scanner Stations of an Aircraft. |
MAY 1971 |
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| Authors:
James L. Porterfield; Steve A. Heckart; Herschel C. Self; E. P. McKechnie; AEROSPACE MEDICAL RESEARCH LAB WRIGHT-PATTERSON AFB OHIO
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| The study investigated airborne visual reconnaissance from the nose versus side scanner stations of an aircraft. Six subjects performed the search task at the nose station of a B-50 aircraft and six different subjects performed the task at the two side scanner stations, located aft of the wings. During each pass one subject at the nose station and one at each of the scanner stations searched for tactical target sites ... |
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