Performance Requirements for Replaceable Bulb Motor Vehicle Headlamps
- Ground Vehicle Standard
- J1383_200505
- Revised
Scope
Rationale
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a
Moved replaceable light source requirements to SAE J2560.
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b
Moved sealed beam headlamp requirements to SAE J2595.
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c
Removed fractional aim headlamp requirements since these requirements are applicable to sealed beam headlamps.
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d
Revised and updated section 4 Identification Code, Markings and Notices in its entirety to remove sealed beam markings and add visual/optical aim markings.
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e
Revised Thermal Cycle Test temperatures from -30 °C to 48.5 °C to -40 °C to 50 °C to more accurately reflect the typical global ambient environments (does not account for really cold climates, e.g. Fairbanks Alaska -50 °C).
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f
Moved out-of-focus test to the guidelines section. Improvements in light sources, computer-aided optical design, and light source manufacture have made physical testing of parts unnecessary. Out-of-focus testing, when necessary, can be performed on the computer rather than with physical parts. Experience has proven that with current production light source tolerances and the proper selection of design parameters for lamps, there is no need for any out-of-focus testing in many cases. Therefore, the test was moved to the guidelines.
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g
Added section for visual/optical aim feature design requirements including methods for horizontal visual/optical aim.
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h
Added mechanical aim (VHAD) aiming requirements.
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i
Revised and updated headlamp photometric requirements to more clearly define requirements. Added design to conform statement in guidelines section and changed to the SAE standard of one photometric table for requirements. In addition, changed 4D test points to be tested as scan lines with a maximum requirement a percentage of a test point in the down-road seeing light. The scan line is more beneficial than a point for controlling the light in the foreground region for a reasonable contrast.
Data Sets - Support Documents
Issuing Committee
Road Illumination Devices Standards Committee
The Road Illumination Devices Standards Committee is part of the Lighting System 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 lighting devices that serve to provide forward illumination on the roadway, including headlamps, fog lamps, auxiliary high and low beam lamps as well as halogen and arc discharge source lamps used in these devices. The following task forces have been developed under the committee's scope: J1735 Harmonized Headlamp Beam Task Force J583 Fog Lamp Task Force J2111 Headlamp Washer Task Force J1383 Headlamp Task Force J2585 Headlamp Mounting Height Task Force J2282 Distributed Lighting Task Force Replaceable Bulb Task Force Coated Bulb Task Force J852 Front Cornering Lamps Rewrite Task Force J2591 Advanced Forward Lighting System (AFS) J2009 Rewrite Task Force J599 Lighting Inspection Code Task Force J2595 Sealed Beam Headlamps Task Force J2510 Front Fog Lamp Task Force J565 Rewrite Task Force Pedestrian Visibility Task Force Recent standards challenges have been the introduction of "discharge" source lamps into the automotive lighting industry, harmonization of light patterns with European standards and higher voltage automotive electrical systems. While arc discharge light sources held promises of higher light output and source brightness, they surfaced many new and unanswered questions. Task force work is now ongoing in an attempt to resolve all of the new issues. Even changes in light distribution from recently-improved headlamp light sources, compounded by an increase of large SUV and personal pick-up vehicles have caused a public outcry about "glaring" headlamps. In an effort to preempt regulatory action, the Committee has initiated task force work to find a solution. Finally, Vehicle voltage changes promise to become a significant lighting issue as the effects of higher voltages on the viability of filament lamp designs are researched and discussed. The committee also focuses on standards harmonization for a wide variety of unsettled differences between European (ECE) Standards and domestic (SAE and FMVSS) standards. Resolutions of the more significant differences in standards for fog and head lamps and distributive light sources have been reached. A further challenge remains in coordinating the new and improved standards with new and subtle insights into the human factors of vision and the importance of light and illumination for driver comfort and safety. Understanding the human factors of vision will take on a greater role in evaluating and enhancing the validity of new vehicle forward lighting standards. Participants in the SAE Road Illumination Devices Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.