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Photometry Laboratory Accuracy Guidelines
- Ground Vehicle Standard
- J1330_201409
- Reaffirmed
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
The purpose of this SAE Information Report is to list and explain major equipment, instrumentation, and procedure variables which can affect inter-laboratory differences and repeatability of photometric measurements of various lighting devices listed in SAE Technical Reports. The accuracy guidelines listed in the report are for the purpose of controlling variables that are not a direct function of the lighting device being measured. The control of these individual variables is necessary to control the overall accuracy of photometric measurements. These accuracy guidelines apply to the measurement of the luminous intensities and reflected intensities of devices at the specified geometrically distributed test points and areas. These guidelines do not apply to photometric equipment used to measure license plate lamps.
Rationale
At this time we would like to reaffirm J1330 in its current revision. A full rewrite is being prepared by the task force at this time to include many new technologies and measurement techniques to improve the measurement accuracy of photometric laboratories. Many of the topics are going to be discussed with general terms, and also specific examples of various industries, so that more than one industry can use this standard. This includes at this time both the automotive and aerospace aircraft lighting industries.
Some changes included will be:
a
Measurement of PWM (Pulse Width Modulated) and other modulated sources.
b
Measurement of Chromaticity, UV Content, Red (and other color) Content, retro-reflex color.
c
Measurement of Low Light Level sources, including Low-light Visibility.
d
Added to “Related Publications” SAE J2382 as a method of high-speed photometric measurement that references this document.
e
Measurement of Luminance, including License Plate Lamps and other luminance measurements.
f
Measurement of Flashing Light sources.
g
Measurement of Total Luminous Flux using an Integrating Sphere.
h
Added references to IESNA documents
Recommended Content
| Ground Vehicle Standard | LED Signal and Marking Lighting Devices |
| Ground Vehicle Standard | Test Methods and Equipment for Lighting Devices for Use on Vehicles Less than 2032 mm in Overall Width |
| Ground Vehicle Standard | Minimum Performance of the Warning Light System Used on Emergency Vehicles |
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| [Unnamed Dataset 1] | ||
| [Unnamed Dataset 2] | ||
| [Unnamed Dataset 3] | ||
| TABLE 1 | SUGGESTED FILTERS |
Issuing Committee
Test Methods and Equipment Stds Committee
The Test Methods and Equipment Standards Committee is part of the Lighting Systems Steering Committee that reports to the Motor Vehicle Council (MVC).
Reference
| Number | Title |
|---|---|
| ASTM E 380 | This document is not part of the subscrption. |
| IESNA LM-35-02 | This document is not part of the subscrption. |
| IESNA LM-75-01 | This document is not part of the subscrption. |
| J1889_201503 | L.E.D. Signal and Marking Lighting Devices |
| J2009_201608 | Discharge Forward Lighting System and Subsystems |
| J2139_201412 | Tests for Signal and Marking Devices Used on Vehicles 2032 mm or More in Overall Width |
| J2650_201305 | Performance Requirements for Light Emitting Diode (LED) Road Illumination Devices |
| J387_201404 | Terminology - Motor Vehicle Lighting |
| J575_201508 | Test Methods and Equipment for Lighting Devices for Use on Vehicles Less than 2032 mm in Overall Width |
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