Automotive headlamps with improved beam chromaticity

Details Automotive headlamps with improved beam chromaticity Automotive headlamps with improved beam chromaticity

2007-01-30

2007-01-30

Ward, John Anthony (Department: 2875)

Illumination

Supported by vehicle structure

Light modifier

C362S084000, C362S293000

Reexamination Certificate

active

10605511

ABSTRACT:
Lenses for lamps can improve the quality of the light emitted through lens by interacting with the light bulb. Photoluminescent dyes as well as non-photoluminescent dyes may be incorporated into a polycarbonate lens in order to shift the chromaticity of the light source. Further, design features such as grooves or protrusions may be incorporated into the lens to allow light produced by the photoluminescent material to escape the lens and be added to the emitted beam to further shift the chromaticity. The emitted beam is of a legal color and intensity as defined per the SAE J578 and SAE J1383 standards. The lighting performance may also be improved in such manner as reducing discomfort glare, increasing brightness or producing a beam that enhances road visibility at night to the human eye.

REFERENCES:
patent: 4716501 (1987-12-01), McKee et al.
patent: 4968916 (1990-11-01), Davenport et al.
patent: 5059865 (1991-10-01), Bergman
patent: 5548491 (1996-08-01), Karpen
patent: 5605761 (1997-02-01), Burns et al.
patent: 5920429 (1999-07-01), Burns et al.
patent: 5961208 (1999-10-01), Karpen
patent: 6155694 (2000-12-01), Lyons et al.
patent: 6637922 (2003-10-01), Lee
SAE, “Surface Vehicle Recommended Practice, (R) Performance Requirements for Motor Vehicle Headlamps”, SAE J1383, iss. Apr. 1985, rev. Dec. 1996, pp. 1-111.
Van Derlofske & Bullough, “Spectral Effects of High-Intensity Discharge Automotive Forward Lighting on Visual Performance”, SAE International, 2003-01-0559, pp. 83-90.
Van Derlofske & Bullough, “Visual Benefits of Blue Coated Lamps for Automotive Forward Lighting”, SAE International, 2003-01-0930, pp. 117-124.
Bullough, Van Derlofske, Fay, and DEE, “Discomfort Glare from Headlamps: Interactions Among Spectrum, Control of Gaze and . . . ”, SAE International, 2003-01-0296, pp. 21-25.
Sivak, Flannagan, Schoettle and Adachi, “Driving with HID Headlamps: A Review of Research Findings”, SAE International, 2003-01-0295, pp. 15-20.
Tiesler-Wittig, Haacke, Jalink and Postma, “Mercury Free Xenon HID—A Challenging Development in a Global Context”, SAE International, 2003-01-0558, pp. 77-82.
Tessnow, Reiners and Herning, “Optical Near Field Measurements and Ray-Tracing Simulations of Coated and . . . ”, SAE International, 2003-01-0929, pp. 111-115.
Bryce, Shcottland, Vicory, and Terburg, “Lens Material Development for Improved Halogen Headlamp Visibility”, SAE International, 2003-01-0991, pp. 153-160.
Ground Vehicle Lighting Standards Manual, SAE International, 2003 Edition, HS-34, (R)Color Specification-SAE J578, Jul. 2002, pp. 180-181.
Terburg and Schottland, “Lens Material Development for Improved Halogen Headlamp Performance and Brand . . . ”, Progress in Automobile Lighting (PAL), 2003, 1078-1093.
Van Derlofske, Bullough, and Hunter, “Visual Benefits of High-Intensity Discharge Automotive Forward Lighting”, SAE International, 2002-01-0259, pp. 51-56.
Bullough, Fu and Van Derlofske, “Discomfort and Disability Glare from Halogen and HID Headlamp Systems”, SAE International, 2002-01-0010, pp. 1-5.
Callahan and Lapatovich, “On the Removal of Mercury from Automotive HID Lamps: A Technical and Regulatory Perspective”, SAE International, 2002-01-0976, pp. 201-207.
Bullough and Rea, “Driving in Snow: Effect of Headlamp Color at Mesopic and Photopic Light Levels”, SAE International, 2001-01-0320, pp. 67-75.
Van Derlofske, Bullough and Hunter, “Evaluation of High-intensity Discharge Automotive Forward Lighting”, SAE International, 2001-01-0298, pp. 1-7.
Rosenhahn and Hamm, “Measurements and Ratings of HID Headlamp Impact on Traffic Safety Aspects”, SAE International, 2001-01-0302, pp. 29-35.
Karpen, “Neodymium Oxide Doped Headlight Lamps”, SAE International, 2001-01-0319, pp. 59-65.
ECE Regulation 99, “Uniform Provisions Concerning the Approval of Gas-Discharge Light Sources for Use in Approved Gas-Discharge Lamp . . . ” United Nations, Aug. 10, 2001.

Affiliated with

Also associated with

Rating

Automotive headlamps with improved beam chromaticity does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automotive headlamps with improved beam chromaticity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automotive headlamps with improved beam chromaticity will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3794743