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ASTM International - ASTM F1165-20

Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts

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Organization: ASTM International
Publication Date: 1 May 2020
Status: active
Page Count: 4
ICS Code (Optics and optical measurements in general): 17.180.01
significance And Use:

5.1 With the advent of thick, highly angled aircraft transparencies, multiple imaging has been more frequently cited as an optical problem by pilots. Secondary images (of outside lights), often... View More

scope:

1.1 This test method covers measuring the angular separation of secondary images from their respective primary images as viewed from the design eye position of an aircraft transparency. Angular separation is measured at 49 points within a 20 by 20° field of view. This procedure is designed for performance on any aircraft transparency in a laboratory or in the field. However, the procedure is limited to a dark environment. Laboratory measurements are done in a darkened room and field measurements are done at night (preferably between astronomical dusk and astronomical dawn).

1.2 Units-The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.

1.3 This standard possibly involves hazardous materials, operations, and equipment. This standard does not purport to address all of the safety concerns associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM F1165-20
May 1, 2020
Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts
1.1 This test method covers measuring the angular separation of secondary images from their respective primary images as viewed from the design eye position of an aircraft transparency. Angular...
November 1, 2015
Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts
5.1 With the advent of thick, highly angled aircraft transparencies, multiple imaging has been more frequently cited as an optical problem by pilots. Secondary images (of outside lights), often...
May 1, 2010
Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts
With the advent of thick, highly angled aircraft transparencies, multiple imaging has been more frequently cited as an optical problem by pilots. Secondary images (of outside lights), often varying...
October 1, 2004
Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts
With the advent of thick, highly angled aircraft transparencies, multiple imaging has been more frequently cited as an optical problem by pilots. Secondary images (of outside lights), often varying...
January 1, 1988
Standard Test Method for Measuring Angular Displacement of Multiple Images in Transparent Parts
1.1 This test method covers measuring the angular separation of secondary images from their respective primary images as viewed from the design eye position of an aircraft transparency. Angular...
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