Screenless elliptical illumination module producing an illumination beam with cutoff and lamp comprising such a module
Patent 6997587 Issued on February 14, 2006. Estimated Expiration Date: 
April 24, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 24, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesHolographic device for generating multiple beams of light Vehicular headlamp Vehicle headlamp Projection head lamp for cars Headlight for vehicles Head lamp device for vehicle Patent #: 5918973 InventorAssigneeApplicationNo. 10422564 filed on 04/24/2003US Classes:362/516, Reflector structure362/297, With or including plural, distinct reflecting surfaces362/539, Including mask or screen362/487, Automobile362/545, Including light emitting diode362/231, Different wavelengths362/518, Plural separate sections with complex surfaces362/511Optical waveguide (e.g., fiber optic, edge-lit)ExaminersPrimary: O'Shea, SandraAssistant: Ton, Anabel Attorney, Agent or FirmForeign Patent References
International ClassF21V 7/04AbstractThe invention proposes an illumination module (10) producing an illumination beam with cutoff, comprising, arranged from back to front along a horizontal optical axis (A—A), an elliptical reflector (12) which delimits a volume of reflection and which has an elliptical surface of reflection (18, 20), at least one light source (14) which is arranged in the vicinity of a first focus (F1) of the reflector (12), and a convergent lens (16) whose focal plane is arranged in the vicinity of the second focus (F2) of the reflector (12), characterized in that the reflector (12) has a horizontal flat surface (22), the upper face (24) of which is reflective, which delimits vertically towards the bottom the volume of reflection, and in that the flat surface (22) of the reflector (12) has a cutoff edge (28) which is arranged in the vicinity of the second focus (F2) of the reflector (12).The invention also proposes a lamp comprising such an illumination module.Field of SearchOptical waveguide (e.g., fiber optic, edge-lit)Reflector Including mask or screen Reflector structure Having ball and socket mechanism Including selected wavelength modifier Including reflector With or including plural, distinct reflecting surfaces With or including planar reflecting surface Including light emitting diode Automobile Substantially identical modifiers Including specific light bulb mounting | |
