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ASTM F1863-98(2004)
Standard Test Method for Measuring the Night Vision Goggle-Weighted Transmisivity of Transparent Parts
5 стр.
Заменен
Печатное изданиеЭлектронный (pdf)
96.72 $ (включая НДС 20%)
Разработчик:
Зарубежные/ASTM
ICS:
37.020 Optical. Including microscopes, telescopes, binoculars, optical materials, optical components and optical systems / Оптическое оборудование. Включая микроскопы, телескопы и т.д.
Сборник (ASTM):
15.03 Space Simulation; Aerospace and Aircraft; Composite Materials / Космическое моделирование; Аэрокосмическая и авиационная промышленности; Композиционные материалы
Тематика:
Aerospace Materials
Описание
Значение и использование

SignificanceThis test method provides a means to measure the compatibility of a given transparency through which NVGs are used at night to view outside, nighttime ambient illuminated natural scenes.

UseThis test method may be used on any transparent part, including sample coupons. It is primarily intended for use on large, curved, or thick parts that may already be installed (for example, windscreens on aircraft).

Область применения

1.1 This test method covers apparatuses and procedures that are suitable for measuring the NVG-weighted transmissivity of transparent parts including those that are large, thick, curved, or already installed. This test method is sensitive to transparencies that vary in transmissivity as a function of wavelength.

1.2 Since the transmissivity (or transmission coefficient) is a ratio of two radiance values, it has no units. The units of radiance recorded in the intermediate steps of this test method are not critical; any recognized units of radiance (for example, watts/m2-str) may be used, as long as it is consistent.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Ключевые слова:
canopy; night vision goggles; transmissivity; transparency; windscreen