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SAE J2739 Absorptive and Interference Coatings Applied on Replaceable Headlamp Bulbs

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Product Code:SAE J2739
Title:Absorptive and Interference Coatings Applied on Replaceable Headlamp Bulbs
Issuing Committee:Road Illumination Devices Standards Committee
Scope:This report investigates the use of single and multi-layer coatings on replaceable headlamp bulbs and how such coatings can affect the performance of bulbs in terms of light scattering, which can contribute to glare, and spectral separation in headlamps. Tests were developed to investigate the effects of absorptive and interference (multi-layer) coatings on bulbs, and on bulbs in headlamp systems. These tests provide validation for a proposed bulb color separation test, which establishes limits for spectral separation within the boundaries of SAE J578 white color requirements. The bulb color separation test provides a definitive selection criterion to identify bulbs that cause excessive light scatter (glare) and/or spectral separation in an optical system.
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Product Code:SAE AS4623
Title:Hose Assembly, Polytetrafluoroethylene, Para-Aramid Reinforced Heavy-Duty, 275 掳F 3000 psi, Aircraft Hydraulic Systems
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:This document defines the requirements for heavy-duty polytetrafluoroethylene (PTFE) lined, para-aramid reinforced, hose assembly suitable for use in 275 掳F, 3000 psi aircraft systems where rapid rate pressure pulsing and torsional/longitudinal flexing may occur in addition to normal hydraulic system loading. Size -16 and -20 are limited to +225 掳F service.【英文标准名称】:Photography(Optics)-CameraLenses-FocusingandDistanceScaleMarkings
【原文标准名称】:摄影(镜片).照相机透镜.调焦和距离的刻度标志
【标准号】:ANSIPH3.602-1988
【标准状态】:作废
【国别】:美国
【发布日期】:1988
【实施或试行日期】:
【发布单位】:美国国家标准学会(ANSI)
【起草单位】:ANSI
【标准类型】:()
【标准水平】:()
【中文主题词】:摄影技术;调节;透镜;摄影机
【英文主题词】:lenses;phototechnology;adjustments;cameras
【摘要】:
【中国标准分类号】:N46
【国际标准分类号】:37_040_10
【页数】:2P;A4
【正文语种】:英语