Helmet-Mounted Displays: - USAARL - The - U.S. Army

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177, 179, 186, 189, 209, 211, 214, 242, 243 Impact attenuation (see <strong>Helmet</strong>) Initial health hazard assessment report (IHHAR), 239 Integrated <strong>Helmet</strong> and Display Sighting System (IHADSS), 4, 5, 34, 170, 178-181, 187, 195, 198, 202, 212-214, 237, 241-246, 247-252 Integrated Night Vision Imaging System (INVIS), 177 Interlace ratio, 102, 262 Interpupillary distance (IPD), 26, 57, 68, 146, 177, 240 J Jitter (see Tracking system) Just noticeable difference (jnd) (see also Contrast), 110, 171 L Lag (latency), 85-88: acceptable, 88, display, 87, 88, 182 slaving, 87 sensor/weapon feedback, 87 Lead, lanthanum, zirconate, and titanate (PLZT), 253 Index 289 Lens: curvature, 59 focus, 26, 28, 55, 59, 60, 71, 180, 181, 242- 244, 264 focal length, 26, 55, 56, 60 Light emitting diode (LED) (see Flat panel display) Linearity, 102, 262 Liquid crystal displays (LCD) (see Flat panel display) Luminance: range, 15, 35, 41, 48, 84, 111-113, 117, 213, 214, 264 uniformity, 15, 41, 48, 102, 133, 262-264 Luminous efficiency, 34, 36, 42, 152, 153, 263 Luminous transmittance, 212, 213, 252, 253, 263, 264 Luning, 149-151 M Magnification, 26, 28, 73, 135, 139, 140, 146, 148, 149, 240, 265 Manprint program (MANPRINT), 235 Mass moment of inertia (MOI), 187, 211 Mean time between failure (MTBF), 263
290 Index Microphone, 15, 186, 224, 247 Modified rhyme test (MRT), 226 Modulation transfer function (MTF), 15, 20, 38, 102, 113, 123-127, 129, 130, 262 Modulation transfer function area (MTFA), 123, 126, 175 Monocular displays, 4, 7, 21, 22, 27, 84, 121, 132, 135, 137, 138, 143-146, 149, 151, 178, 179, 195, 202, 240-243, 247 Monochrome versus color, 41-44, 114, 151, 152 Monolithic afocal relay combiner (MONARC), 71, 73 Motion box (see Tracking systems) N Neck injury, 186, 188, 190- 193, 195, 196, 202 Neck loading, 134, 184, 186, 187, 188, 190 Neutrality, 264 Night vision goggle (NVG), 3, 4, 13, 55, 56, 60-62, 71, 73, 132, 138, 153, 175- 177, 179, 186, 187, 190, 202, 204, 208, 240-244, 249, 250 Nuclear, biological, and chemical (NBC) mask, 135, 137, 138, 212 O Optical designs: catadioptric, 55, 57, 60, 61, 64, 68, 70, 71, 73, 117, on- and off-axis, 55, 68, 71, 72, 78 pupil and nonpupil forming, 56, 57, 71, 73, 75, 76, 135, 141, 240, 241 refractive, 22, 55, 56, 61, 62, 64, 68, 70, 213, 242, 264 Optimum sighting alignment point (OSAP), 240 P Peripheral vision, 192 Phosphor: P1, 38, 127, 129 P20, 36, P22, 36 P43, 27, 36, 38, 75, 127, 129, 140 P53, 35, 36, 38 persistence, 34, 36-38, 124, 126-128 Photopic (see Eye)
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Helmet-Mounted Displays: Design Iss
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The views, opinions, and/or finding
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vi Contents 4. Visual Coupling Clar
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viii Contents References ..........
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x Ben T. Mozo, Research Physicist U
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xii Foreword began its phenomenal e
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xiv Preface Acknowledgments The aut
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Introductory Overview 1 Clarence E.
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Introductory Overview 5 Figure 1.2.
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Introductory Overview 7 The trend f
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Introductory Overview 9
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Introductory Overview 11 aviator to
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Introductory Overview 13 1970's. Ta
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Introductory Overview 15 Image sour
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Introductory Overview 17
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Table 1.3. HMD performance figures-
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Introductory Overview 21 direct vie
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Introductory Overview 23 Figure 1.9
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Introductory Overview 25 Figure 1.1
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Introductory Overview 27 Ercoline,
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Introductory Overview 29 II, Procee
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Introductory Overview 31 Armstrong
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34 Clarence E. Rash, Melissa H. Led
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40 Liquid crystal Clarence E. Rash,
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Optical Designs 3 William E. McLean
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Optical Designs 57 and plotted in l
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Optical Designs 59 phosphors, (b) u
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Optical Designs 61 optics. Examples
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Optical Designs 63
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prism combiner. Optical Designs 65
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Figure 3.2. (continued) Optical Des
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Optical Designs 69
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Optical Designs 71 Figure 3.4. Comp
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Optical Designs 73 Figure 3.6. Opti
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Optical Designs 75 Figure 3.8. Refl
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Optical Designs 77 Figure 3.9. Ray
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Optical Designs 79 incidence and re
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80 Clarence E. Rash hinted at befor
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82 Clarence E. Rash metal tolerant
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84 Clarence E. Rash the performance
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86 Clarence E. Rash Figure 4.3. Hig
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88 Clarence E. Rash imagery in HMDs
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90 Clarence E. Rash as with ANVIS.
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92 Clarence E. Rash performance, on
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94 Clarence E. Rash effects on visu
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96 Clarence E. Rash concerning roll
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98 Aeromedical Research Laboratory.
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DESIGN ISSUES PART TWO
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102 Clarence E. Rash and William E.
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104 Contrast Clarence E. Rash and W
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168 Number of SOG = � log (C r) /
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Visual Performance 6 William E. McL
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Visual Performance 171 observer is
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seen. Visual Performance 173 Figure
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Visual Performance 175 perception.
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Visual Performance 177 with monovis
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Visual Performance 179 individuals
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Visual Performance 181 0 to -5.25 d
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Visual Performance 183 Report No. 9
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Biodynamics 7 B. Joseph McEntire He
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Biodynamics 187 behavior of this de
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Figure 7.2. Head anatomical coordin
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Biodynamics 191
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Biodynamics 193 al., 1972), and man
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Biodynamics 195 Figure 7.5. Vertica
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Biodynamics 197 disability and fata
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Biodynamics 199 been fabricated int
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Biodynamics 201 Ty pic al acc ele r
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Biodynamics 203 exceed the mechanic
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Biodynamics 205 complexity and comp
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Type Reference helmet Foam in place
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Biodynamics 209 the fitting problem
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Biodynamics 211 adjustment buckle,
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Biodynamics 213 down. The helmet ma
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Biodynamics 215 Desert Shield/Deser
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Biodynamics 217 Donelson, S. M., an
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219 Fort Rucker, AL: U.S. Army Aero
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220 Ben T. Mozo Figure 8.1. Noise l
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222 Ben T. Mozo available in the ne
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224 Ben T. Mozo Protectors”(ANSI,
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226 Ben T. Mozo language. Tests of
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228 Ben T. Mozo Figure 8.6. Speech
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230 Ben T. Mozo the communications
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232 Ben T. Mozo Item Mass (grams) C
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Ribera, J. E., and Mozo, B. T. Unda
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236 Joseph R. Licina operational us
Page 257 and 258: 238 Joseph R. Licina Standard MIL-S
Page 259 and 260: 240 Joseph R. Licina On electro-opt
Page 261 and 262: 242 Joseph R. Licina For HMDs with
Page 263 and 264: 244 Joseph R. Licina 1994b) that wi
Page 265 and 266: 246 Joseph R. Licina Table 9.2. Hea
Page 267 and 268: 248 Joseph R. Licina provided a 93.
Page 269 and 270: 250 Joseph R. Licina and buckles, a
Page 271 and 272: 252 Joseph R. Licina authorized to
Page 273 and 274: 254 Joseph R. Licina a nuclear flas
Page 275 and 276: 256 Joseph R. Licina requirements:
Page 277: HMD PERFORMANCE ASSESSMENT PART THR
Page 280 and 281: 262 Clarence E. Rash, John C. Mora,
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Page 288 and 289: 270 making stereoposis possible. Bi
Page 290 and 291: 272 John C. Mora and M elissa H. Le
Page 297 and 298: NOTES ON CONTRIBUTORS Melissa H. Le
Page 299: Notes on Contributors 281 Research
Page 303 and 304: 284 Index Breakaway force (see Fran
Page 305 and 306: 286 Index movement, 55, 80, 84, 90,
Page 307: 288 Index 198, 204, 205, 208, 210,
Page 311 and 312: 292 Index Speech intelligibility (S
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