US 11,686,448 B1 · Apparatus of projector headlights

Abstract

This invention is a projector headlight that, while offering dual beam patterns, boasts a 100% utilization of the light emitted from a light source by one of the following methods: (1) employing a reflective cutoff shield means to reflect the incoming light from said light source back to the reflector to enhance the illumination in low-beam pattern, (2) using reversible cutoff shield means to reflect the incoming light from said light source back to the reflector to enhance the illumination in low-beam pattern with no moving part involved, (3) utilizing a selective light-filter cutoff means to selectively reflect the incoming light from said light source back to the reflector to enhance the illumination in low-beam pattern without making use of any moving part, (4) using a low-beam light-emitting subassembly and a high-beam light-emitting subassembly that are separated by partition means to achieve dual beam patterns with no moving part, or (5) adopting a low-beam light-emitting subassembly in low-beam pattern and a high-beam light-emitting subassembly in high-beam pattern without any moving part.

Claims26

Dependent claims

A projector headlight, comprising:

a. a reflector comprising a predetermined shape,
b. a light source disposed in a predetermined position,
c. a condenser lens comprising predetermined optical characteristics and being disposed in a predetermined position,
d. cutoff means for directing incoming light from said light source back to said reflector to enhance the illumination in low-beam pattern, and
e. said light source being powered on and said cutoff means being moved to predetermined low-beam position in said low-beam pattern or being moved to predetermined high-beam position in high-beam pattern,
whereby said low-beam pattern achieves 100% light utilization of said light source, eliminating the ubiquitous drawback of low light utilization in all existing dual-beam projector headlight designs.

3 more elements

A projector headlight, comprising:

a. a reflector comprising a predetermined shape,
b. a light source disposed in a predetermined position,
c. a condenser lens comprising predetermined optical characteristics and being disposed in a predetermined position,
d. cutoff means for blocking incoming light from said light source in a non-transparent state, and
e. said light source being powered on and said cutoff means switching to said non-transparent state to block said incoming light from said light source from reaching said condenser lens in low-beam pattern or switching to transparent state to allow said incoming light to reach said condenser lens in high-beam pattern,
whereby no moving part is needed to achieve said low-beam pattern and said high-beam pattern, eliminating the ubiquitous drawback of having a moving part in all existing dual-beam projector headlight designs.

3 more elements

A projector headlight, comprising:

a. a reflector comprising a predetermined shape,
b. a light source being disposed in a predetermined position and being able to emit light of at least two predetermined frequencies or wavelengths for low-beam pattern and high-beam pattern respectively,
c. a condenser lens comprising predetermined optical characteristics and being disposed in a predetermined position,
d. cutoff means for blocking incoming light of said first predetermined frequency or wavelength from said light source, and
e. said light source being powered and said cutoff means blocking said incoming light of said first predetermined frequency or wavelength in said low-beam pattern or said cutoff means allowing incoming light of said second predetermined frequency or wavelength to reach said condenser lens in said high-beam pattern,
whereby any moving part is avoided, eliminating the ubiquitous drawback of having a moving part in all existing dual-beam projector headlight designs.

3 more elements

Dependencies are inferred from the claim text.

Apparatus of projector headlights

Life of this patent

Apparatus of projector headlights

Life of this patent

Abstract

Claims26