SAE J575 Standard Methods and Equipment for Lighting Devices for Use on Vehicles Less than 2032 mm in Overall Width
SAE J575 testing provides standardized laboratory tests, test methods and equipment, and requirements for lighting devices. It is intended for devices used on vehicles less than 2032 mm in width. Tests for vehicles larger than 2032 mm in overall width are covered in SAE J2139. Device-specific tests and requirements can be found in applicable SAE technical reports.
SAE J575 defines a light bulb as an indivisible assembly that contains a source of light and which is normally used in a lamp. Unless otherwise specified, bulbs used in the tests shall be supplied by the test facility and shall be representative of bulbs in regular production.
Where special bulbs are specified, they shall be submitted with the sample devices and the same or similar bulbs shall be used in the tests. Lighting devices designed for use in 6 V, 12 V, or 24 V systems shall be tested with 12 V system bulbs.
SAE J575 test standard defines a lighting device that assembly (divisible or indivisible) which contains a bulb or other light source and generally an optical system such as a lens or a reflector, or both, and which provides a lighting function.
Lighting device samples submitted for the test shall be representative of the device as regularly manufactured and marketed, unless otherwise identified. Each sample shall be securely mounted on a test fixture in its designed operating position and shall include all accessory equipment necessary to operate the device in its normal manner.
SAE J575 Compliance Testing Procedures
The SAE J575 test standard includes the following suite of tests:
Photometry – This test measures luminous intensities at test points throughout the light distribution pattern.
Vibration – The vibration test evaluates the ability of the sample device to resist damage from vibration-induced stresses.
Impact – This test applies to lamps with external plastic lenses or outer covers.
Abrasion Test of Plastic Lamp Lens Material – This abrasion test evaluates the ability of a test specimen to resist damage from abrasion for luminous transmittance.
Warpage Test on Device with Plastic Components – This test evaluates the ability of the plastic components of the clean sample device to resist damage due to light source heat.
Thermal Cycle – This test applies to lamps that have a plastic lens, a plastic reflector, or both.
Internal Heat – The lamp is seasoned and photometered to the test points as applicable before and after the internal heat test.
Water Intrusion (Moisture) – This test evaluates the ability of the sample device to resist moisture intrusion from a water spray. Moisture also determines the drainage capability of those devices with drain holes or other exposed openings in the device.
Humidity – This test determines the ability of the lamp to resist the accumulation of moisture within the lamp that could cause either physical defects to the lamp materials that might affect lamp beam performance.
Dust Exposure – This test evaluates the ability of the sample device to resist dust penetration which could significantly affect the photometric output of the lamp device.
Corrosion – This test evaluates the ability of the sample device to resist salt corrosion which would impair the functional characteristic of the device.
Expert SAW J575 Compliance Testing of Lighting Devices Vehicles
Keystone Compliance is a full-service SAE J575 test lab. Our SAE J575 testing knowledge and experience expedite the test process and assists our customers with overcoming challenges when they arise.
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