L.E.D. Signal and Marking Lighting Devices
- Ground Vehicle Standard
- J1889_200507
- Revised
Scope
Rationale
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1
The foreword was removed because it only applied to the last revision.
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2
The name of the document was changed to L.E.D Signal and Marking Lighting Devices from L.E.D. Devices to reflect the addition of a companion document SAE XJ2650 for forward lighting.
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3
Removed SAE J576 from applicable documents because it is no longer referenced in the standard.
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4
Added SAE J2139 to applicable publications.
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5
Changed 3.2 definition of an L.E.D. to be the same as the definition in SAE XJ2650.(New) L.E.D.—An indivisible discrete light source unit, containing [a] semiconductor junction[s], in which visible light is produced when forward current flows as a result of applied voltage.(Old) L.E.D.—An indivisible, discrete light source unit containing a semiconductor junction in which visible light is non-thermally produced when a forward current flows as a result of applied voltage.
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6
Expanded 3.3 the definition of a L.E.D. Lighting device.
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7
Changed 3.4 the definition of an Incandescent lamp source to correspond with the definition of a filament bulb in J387.
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8
Added 3.8. A definition for Photometric Stability - the point at which the photometry is stable ±5% within the previous 15 minute period.
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9
Added section 4, Identification Codes, Markings and Notices, to be consistent with other lighting J documents. This resulted in renumbering the rest of the document.
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10
Added or J2139 to the paragraph with SAE J575, they are companion documents. J2139 was also added anywhere else J575 was mentioned.
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11
Changed 5.1.3 Dust by and added the words on the inside of the lens.
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12
Section 5.1.5 Photometry Test was changed to reference SAE J1330 photometry guidelines, which was updated to include some of the special considerations, needed for L.E.D. lighting.
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13
Section 5.1.5 was broken up into two sections 5.1.5.1 and 5.1.5.2 that helps to clarify the testing procedure for the two different types of lamps previously identified as “steady burning” and “intermittent operating” lamp functions. The new wording provides clear instructions on how to perform the tests for each type. Included in this change was also the removal of the term heat saturation, which was replaced with the term photometric stability.
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14
Added a sentence to section 5.3.3.1 to help clarify the minimum and maximum temperatures. The minimum temperature shall be -30 °C, and the maximum temperature shall be 50 °C.
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15
Section 6.1.5 was changed to correspond with the changes made in 5.1.5.
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16
Removed Section 6.4 because it is already in all of the individual photometric standards.
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17
Removed Section 7.1 because Photometric design guidelines have been removed from corresponding documents.
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18
Removed section 7.2.3 because this document is not an end user document.
Data Sets - Support Documents
Issuing Committee
Signaling and Marking Devices Stds Comm
The Signaling and Marking Devices Standards Committee is part of the Lighting Systems Steering Committee that reports to the Motor Vehicle Council (MVC). The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to exterior lighting devices used on passenger cars, light trucks, vans and multipurpose vehicles. The Committee monitors the development of related technologies and determines how they may be applied to signaling and marking devices, while also working towards the development of standards to aid in the application of various technologies. The following task forces have been developed under the committee's scope: J1889 LED Signal Lighting Task Force New Technology Signal Lighting Task Force J2030 Discharge Signal Lighting Task Force Geometric Visibility Task Force Miniature Bulb Task Force J593 Backup Lamp (Reversing Lamp) Task Force J2087 Daytime Running Lamp Task Force Side Mirror Turn Signal Task Force Participants in the SAE Signaling and Marking Devices Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.