Vision Restriction Device (VRD)

Gerald C. Holst

doi:10.1117/12.960936

21 March 1989 Vision Restriction Device (VRD)

Gerald C. Holst

Proceedings Volume 1117, Display System Optics II; (1989) https://doi.org/10.1117/12.960936
Event: SPIE 1989 Technical Symposium on Aerospace Sensing, 1989, Orlando, FL, United States

Abstract

In geographical areas where low-level nighttime training with high-speed aircraft is restricted, it becomes imperative to employ a vision restriction device (VRD) that simulates nighttime conditions during daytime training. In response to this requirement, a new "bifocal" visor has been designed and evaluated. It consists of spectrally selective filters centered on the eyes, a neutral density lower portion, and is opaque elsewhere. The filters increase the contrast of the navigation forward-looking infrared (FLIR) image projected onto the heads up display (HUD). The neutral density portion allows the pilot to see all displays in full color by simply glancing down. The remainder of the visor is opaque so that the pilot cannot see the outside world and, as such, the visor simulates nighttime conditions. Initial pilot response has been favorable and flight tests are currently underway for evaluation purposes.

Citation Download Citation

Gerald C. Holst "Vision Restriction Device (VRD)", Proc. SPIE 1117, Display System Optics II, (21 March 1989); https://doi.org/10.1117/12.960936

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available