Performance Requirements for Sealed Beam Motor Vehicle Headlamps
- Ground Vehicle Standard
SAE J2595 has been created as a result of rewriting SAE J1383. The intent is to remove all sealed beam information from SAE J1383 and place it in this new SAE J2595 document.
Removed all text, figures and tables from J1383 that apply to sealed beam.Ref. Text Sections – 3.3, 3.20, 4.4, 5.0, 5.1.2, 5.6, 5.7.5, 5.8, 5.8.1, 5.8.2, 5.8.3, 5.8.4, 5.8.5, 5.12.3, 5.13, 5.13.1, 5.13.2, 5.13.3, 5.14, 5.14.1, 5.14.2, 5.14.3, 6.1.2, 6.7,6.7.1, 6.7.2, 6.9, 6.14, 6.15, 126.96.36.199, 188.8.131.52, 184.108.40.206, 220.127.116.11, 6.22.8, 6.22.9, 6.22.10, 7.3, 7.4 items c and d, 7.6, 8.0 through 18.104.22.168 [entire section of “Replaceable Bulb Filament Dimensions and Location Tests”].Ref. Figures – 9, 10, 19, and 33 through 82B.Ref. Tables – 1 and 2.
Revised numerical order of definitions, identification code designation, tests, performance requirements and guidelines.
Figures 13 through 27 were redrawn for clarity.
Removed Tables 4, 6, 7 and 8 and combined them into one new Table 2.
Removed Table 9 [test classification]. Was redundant and not used.
Removed the 56 × 75mm “J” lamp [Figures 29 and 30] and associated criteria. Not used.
Corrected the 55 × 135 lamp drawings [Figures 31 and 32]. The current drawings depicted do not meet the specifications of the original concept.
Changed the identification whereas the 55 × 135 lamps were referred to as “LK” and “UK”. These lamps were not adopted by NHTSA as sealed beams and therefore were not officially assigned lamp codes.
Maintained the sections pertaining to VHAD in effort to meet the aiming needs of the 55 × 135 lamp. Ref. Sections 3.19, 5.10, 6.11.3, 6.11.4 and 6.22.6 through 22.214.171.124.3.
Removed the Luminous Flux Test [5.6] and relocated 5.6.1 and 5.6.2 under the Luminous Flux Maintenance Test [5.7]. Revised the text in 5.7.1, 5.7.2, 5.7.3 and 5.7.4.
Removed the 1G1, 2G1 and 2H1 lamps [Figures 28A and 28B] and associated criteria. These lamps were never introduced into the commercial market.
Added note to Figure 2 [Face of headlamp Assembly] in order to clarify the picture of the inward force test being conducted with a lamp and not a lens.
Re-numbered figures and tables to provide continuity to this new document.
Corrected Humidity Test to clarify test requirements (Section 5.16.8).
Revised Sealed Beam definition to include plastic lens units (Section 3.2).
Included interchangeability requirement for Type E (Figure 22) and Type F (Figure 23) in Sections 6.18.1 and 6.18.2.
Added Seal test (Section 5.18) and Seal Requirements (Section 6.18).
|Ground Vehicle Standard||Performance Requirements for Sealed Beam Motor Vehicle Headlamps|
|Ground Vehicle Standard||FLASHER TEST|
|Aerospace Standard||Failure Rate Estimating|
Data Sets - Support Documents
|TABLE 1A||PHOTOMETRY LOWER BEAM|
|TABLE 1B||PHOTOMETRY UPPER BEAM|
|TABLE 3||HEADLAMP PHOTOMETRIC PERFORMANCE REQUIREMENTS|
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.
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