UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close
Already an Engineering360 user? Log in.

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

Customize Your Engineering360 Experience

close
Privacy Policy

This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

IES LM-72

APPROVED METHOD: DIRECTIONAL POSITIONING OF PHOTOMETRIC DATA

active, Most Current
Buy Now
Organization: IES
Publication Date: 13 February 2020
Status: active
Page Count: 23
scope:

It is important to note that this document assigns specific, standard meaning to certain words; thus, some users might need to adjust their vocabulary. Most should find a positioning system compatible with their normal patterns and experience. This document does not show a preference for any system, but rather describes each of the three systems and then explains how to convert between them.

In applying CN or CCE, four types of angular "rotation" are defined (Orient, Tilt, Roll, and Spin), and each shall be preformed in the defined order. Any or all of the rotation angles may be zero. Each subsequent rotation is applied to the axis system as previously rotated (the local axes), not the original axis system (the global axes).

Orientation, Tilt, Roll, and Spin can be described using X, Y, and Z axes, but the CN system and CCE system are described separately, and separate drawings of the coordinate system are needed.

Document History

IES LM-72
February 13, 2020
APPROVED METHOD: DIRECTIONAL POSITIONING OF PHOTOMETRIC DATA
It is important to note that this document assigns specific, standard meaning to certain words; thus, some users might need to adjust their vocabulary. Most should find a positioning system...
August 17, 1997
Directional Positioning of Photometric Data
A description is not available for this item.

References

Advertisement