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US 2015/0176776 A1Published application
Illumination lens for short-throw lighting
AssigneeSeoul Semiconductor Co., Ltd.
InventorsDavid G PELKA, William A Parkyn
Life of this patent
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Abstract
An illumination lens includes a light incident surface that defines a cavity and has a flat top and lateral flanks, the light incident surface configured to receive light from an underlying light emitting element. The illumination lens also includes a light exiting surface having a central indentation and a surrounding toroid. The flat top has an angular range of 0 to 25° with respect to a vertical optical axis and faces the central indentation.
Claims10
An illumination lens, comprising:
- a light incident surface that defines a cavity and comprises a flat top and lateral flanks, the light incident surface configured to receive light from an underlying light emitting element;
- and
- a light exiting surface comprising a central indentation and a surrounding toroid,
- wherein the flat top has an angular range of 0 to 25° with respect to a vertical optical axis and faces the central indentation.
1 more element
Dependencies are inferred from the claim text.