Human Factors Considerations in the Design and Evaluation of a Helmet Mounted Display Using a Light Emitting Diode Matrix

1978 ◽  
Vol 22 (1) ◽  
pp. 227-229 ◽  
Author(s):  
William F. Moroney ◽  
James F. Barnette
Keyword(s):  
Visual Field ◽  
Human Factors ◽  
Head Movement ◽  
Pupil Size ◽  
Light Emitting Diode ◽  
Size Reduction ◽  
Brightness Contrast ◽  
Image Brightness ◽  
Light Emitting ◽  
Led Matrix

The human factors considerations in the design and evaluation of a helmet mounted display (HMD) using a light emitting diode (LED) matrix are discussed. Specific issues including: helmet weight, bulk, image brightness/contrast, exit pupil size, reduction in visual field, and restriction of head movement were addressed and tradeoffs evaluated. The HMD was evaluated in flight as a device to provide energy maneuverability data to pilots. Preliminary findings are discussed.

scholarly journals Effective photosensibilizator selection for e.n.t.-organ diseases treatment, based on their accumulation in pathologically changed tissues

2012 ◽  
Vol 58 (1) ◽  
pp. 112-120 ◽  
Author(s):  
Y.V. Alexeev ◽  
E.V. Likhacheva ◽  
D.V. Tereshkin ◽  
G.V. Ponomarev ◽  
E.M. Mazur
Keyword(s):  
Mucous Membrane ◽  
Light Emitting Diode ◽  
Clinical Results ◽  
Therapeutic Activity ◽  
Laser Device ◽  
Light Emitting ◽  
Selection For ◽  
Derivatives Of ◽  
Led Matrix ◽  
Selection Of

Accumulation of photosensibilisators - derivatives of E6 chlorines ("Radachlorine", "Photoditazine", "Zelevsky's balsam") in the mucous membrane and selection of most effective sources of emission have been investigated in 30 patients with rhinosinusitis and 10 with tonsillitis. As a source of emission we used light emitting diode (LED) matrix device "ACT" (wavelength approximately 405 nm (Sore band)) and a laser device LAHTA-"MILON"-ML500-SP (wavelength - 662 nm). Drug accumulation in the mucous membrane and changes of their concentrations after emission were evaluated by changes of fluorescence, measured with a LESA-01-BIOSPEC spectrometer. The percent of fluorescence decrease ranged from 50% to 92.7%. This suggests intensive disintegration of photosensibilisators, and consequently, high therapeutic activity of this method. Effectiveness of this method is also confirmed by clinical results.

Integration of Human Factors into Electronic Digital Watch Design

1976 ◽  
Vol 20 (5) ◽  
pp. 141-144
Author(s):  
Andrew D. Le Cocq
Keyword(s):  
Human Factors ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Number Of Factors ◽  
And Control ◽  
Filter Selection

Integrating human factors considerations into the design of a digital watch involved a number of factors relating to both display and control considerations. This paper discusses studies performed to determine specific display and control requirements during the design of the Texas Instruments Microelectronic Digital watch. These studies included Light Emitting Diode (LED) and display filter selection, automatic brightness dimming and operational procedures.

Human Factors Impacts of Light-Emitting Diode Airfield Lighting

2017 ◽  
Vol 2626 (1) ◽  
pp. 51-57 ◽  
Author(s):  
John D. Bullough
Keyword(s):  
Human Factors ◽  
Experimental Evidence ◽  
Energy Use ◽  
Light Emitting Diode ◽  
Light Sources ◽  
Light Emitting ◽  
Incandescent Light ◽  
Color Identification ◽  
Lighting Systems ◽  
Maintenance Requirements

Light-emitting diodes (LEDs) differ from incandescent light sources in several ways that are relevant to energy and maintenance requirements of airfield lighting systems. They have higher luminous efficacy and, when designed properly, have longer useful operating lives; both factors make LEDs attractive candidates for airfield lighting. The photometric, colorimetric, and temporal characteristics of LEDs also differ from those of incandescent light sources, and these can have important implications for the appearance of runway and taxiway lighting systems. The present paper reviews publications summarizing experimental and analytical investigations designed to assess these implications with respect to the following human factors impacts: color identification, brightness and glare, visibility in fog and haze, response to onset of flashing lights, and stroboscopic effects such as the phantom array. Overall, this review of experimental evidence suggests that, in addition to their reduced energy use and maintenance requirements, LED airfield lighting can be advantageous in comparison with incandescent lighting systems used to delineate airport runways and taxiways.

Electronic Instrument Panel Displays

1998 ◽  
Keyword(s):  
Human Factors ◽  
Light Emitting Diode ◽  
Instrument Panel ◽  
Electronic Systems ◽  
Electronic Instrument ◽  
Light Emitting ◽  
Display Technology ◽  
The Many ◽  
Holographic Displays ◽  
Display Systems

Electronic instrument panel displays systems covers the many technical considerations of instrument panel display systems including brightness, contrast, temperature sensitivity, space requirements, color capabilities and human factors concepts. As part of the Progress in Technology Electronics Series, this book contains 40 technical papers written in the last eleven years on the progress of instrument panel displays and their corresponding electronic systems. Papers are grouped according to display technology and present the most recent advances in that area plus several of historical interest. Electronic Instrument Panel Display Systems is divided into ten sections: vacuum fluorescent displays; fluorescent indicator panels; liquid crystal displays; electroluminescent displays; light emitting diode displays; electroluminescent displays; light emitting diode displays; cathode ray tube displays; head up displays; virtual and holographic displays; reconfigurable displays; and human factors considerations.

Two-Pulse Temporal Resolution Threshold in the Peripheral Visual Field

1977 ◽  
Vol 44 (3) ◽  
pp. 837-838
Author(s):  
Naoyuki Osaka
Keyword(s):  
Visual Field ◽  
Temporal Resolution ◽  
Light Emitting Diode ◽  
Peripheral Visual Field ◽  
Pulse Interval ◽  
Vertical Meridian ◽  
Light Emitting

Using a 700-nm light-emitting diode, the minimum inter-pulse interval between two successively flashing pulses presented to 21 retinal loci along horizontal and vertical meridian were measured. The results showed inter-pulse interval changed as a W-shaped function of eccentricity on both meridians.

Synchronization of Chaotic Quantum Dot Light Emitting Diodes under Optical Feedback Effect

2020 ◽  
pp. 144-148
Keyword(s):  
Quantum Dot ◽  
Delay Time ◽  
Chaos Synchronization ◽  
Optical Feedback ◽  
Light Emitting Diode ◽  
Feedback Effect ◽  
Complete Synchronization ◽  
Light Emitting ◽  
Coupling Methods ◽  
Coupling Parameters

Chaos synchronization of delayed quantum dot light emitting diode has been studied theortetically which are coupled via the unidirectional and bidirectional. at synchronization of chaotic, The dynamics is identical with delayed optical feedback for those coupling methods. Depending on the coupling parameters and delay time the system exhibits complete synchronization, . Under proper conditions, the receiver quantum dot light emitting diode can be satisfactorily synchronized with the transmitter quantum dot light emitting diode due to the optical feedback effect.

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