Illumination apparatus
AssigneeKYOCERA Corporation
InventorEri Takeuchi
Life of this patent
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Abstract
An illumination apparatus includes a housing, a first light source, and a first lens optical system. The housing includes an opening. The first light source includes a first emission portion to emit first light into an internal space of the housing. The first lens optical system includes at least one first lens between the first emission portion and the opening in the housing on a path of the first light. The first lens optical system forms an image of the first light from the first emission portion on an imaginary image plane adjacent to the opening and causes the first light to be emitted through the opening. An angle defining a numerical aperture of the first lens optical system is greater than a divergence angle of the first light from the first emission portion.
Claims22
An illumination apparatus, comprising:
- a housing including an opening;
- a first light source including a first emission portion to emit first light into an internal space of the housing;
- and
- a first lens optical system including at least one first lens between the first emission portion and the opening in the housing on a path of the first light, the first lens optical system being configured to form an image of the first light from the first emission portion on an imaginary image plane adjacent to the opening and configured to cause the first light to be emitted through the opening,
- wherein an angle defining a numerical aperture of the first lens optical system is greater than a divergence angle of the first light from the first emission portion.
Dependencies are inferred from the claim text.