HEADLIGHT MODULE AND HEADLIGHT DEVICE
First Claim
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1. A headlight module comprising:
- a light source for emitting light;
a condensing element for concentrating light emitted from the light source;
a light guide element having an incident surface for receiving light emitted from the condensing element, a reflecting surface for reflecting the received light, and an emitting surface for emitting the received light; and
a projection optical element for projecting a first light distribution pattern formed on the emitting surface, as a second light distribution pattern,wherein the incident surface has positive refractive power or negative refractive power,wherein a condensing function of the condensing element and the incident surface forms a shape of the first light distribution pattern,wherein the reflecting surface superposes light that enters through the incident surface and is reflected at the reflecting surface and light that enters through the incident surface and is not reflected at the reflecting surface on the emitting surface, thereby forming a high luminous intensity region on the emitting surface, andwherein the high luminous intensity region is formed in a region of the first light distribution pattern.
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Abstract
A headlight module includes a light source, a light guide element, and a projection optical element. The light source emits light. The light guide element has a reflecting surface for reflecting light emitted from the light source and an emitting surface for emitting light reflected by the reflecting surface. The projection optical element projects light emitted from the emitting surface. In a direction of an optical axis of the projection optical element, an end portion on the emitting surface side of the reflecting surface includes a point located at a focal position of the projection optical element.
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Citations
19 Claims
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1. A headlight module comprising:
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a light source for emitting light; a condensing element for concentrating light emitted from the light source; a light guide element having an incident surface for receiving light emitted from the condensing element, a reflecting surface for reflecting the received light, and an emitting surface for emitting the received light; and a projection optical element for projecting a first light distribution pattern formed on the emitting surface, as a second light distribution pattern, wherein the incident surface has positive refractive power or negative refractive power, wherein a condensing function of the condensing element and the incident surface forms a shape of the first light distribution pattern, wherein the reflecting surface superposes light that enters through the incident surface and is reflected at the reflecting surface and light that enters through the incident surface and is not reflected at the reflecting surface on the emitting surface, thereby forming a high luminous intensity region on the emitting surface, and wherein the high luminous intensity region is formed in a region of the first light distribution pattern. - View Dependent Claims (2, 3, 10, 12, 14, 16, 18)
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4. A headlight module comprising:
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a light source for emitting light; a light guide element having an incident surface for receiving light emitted from the light source, a reflecting surface for reflecting the received light, and an emitting surface for emitting the received light; and a projection optical element for projecting a first light distribution pattern formed on the emitting surface, as a second light distribution pattern, wherein the incident surface has positive refractive power, wherein the incident surface forms a shape of the first light distribution pattern by changing a divergence angle of light entering through the incident surface, wherein the reflecting surface superposes light that enters through the incident surface and is reflected at the reflecting surface and light that enters through the incident surface and is not reflected at the reflecting surface on the emitting surface, thereby forming a high luminous intensity region on the emitting surface, and wherein the high luminous intensity region is formed in a region of the first light distribution pattern. - View Dependent Claims (5, 6, 7, 8, 9, 11, 13, 15, 17, 19)
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Specification