LED device for wide beam generation and method of making the same
First Claim
1. A method of providing a predetermined illuminated surface pattern from a predetermined energy distribution pattern of an LED light source within an LED package having a light transmitting dome comprising:
- providing an optic having a potentially refracting outer and inner surface for enveloping at least in part the light transmitting dome of the LED package;
providing a well in a carrier;
positioning the LED package within the well and the optic into the well to envelope at least in part the light transmitting dome of the LED package; and
providing a shaped inner surface of the optic within the well to refract a portion of light outside of the well without impingement of the light from the LED light source onto the well, which portion of light is emitted from the LED light source into at least a portion of a forward hemispherical solid angle centered on the LED light source, which portion of light would otherwise impinge on some portion of the well but for its redirection by the inner surface of the optic.
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Accused Products
Abstract
A predetermined illuminated surface pattern is generated from a predetermined energy distribution pattern of an LED light source within an LED package having a light transmitting dome. An estimated optical transfer function of a lens shape of an optic is defined by the shape of an exterior and inner surface which envelopes at least in part the light transmitting dome of the LED package. An energy distribution pattern is obtained by combination of the estimated optical transfer function and the predetermined energy distribution pattern of the light source. A projection of the energy distribution pattern onto the illuminated surface is determined. The projection is compared to the predetermined illuminated surface pattern. The estimated optical transfer function is illuminated surface pattern.
138 Citations
18 Claims
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1. A method of providing a predetermined illuminated surface pattern from a predetermined energy distribution pattern of an LED light source within an LED package having a light transmitting dome comprising:
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providing an optic having a potentially refracting outer and inner surface for enveloping at least in part the light transmitting dome of the LED package; providing a well in a carrier; positioning the LED package within the well and the optic into the well to envelope at least in part the light transmitting dome of the LED package; and providing a shaped inner surface of the optic within the well to refract a portion of light outside of the well without impingement of the light from the LED light source onto the well, which portion of light is emitted from the LED light source into at least a portion of a forward hemispherical solid angle centered on the LED light source, which portion of light would otherwise impinge on some portion of the well but for its redirection by the inner surface of the optic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An optic for providing a predetermined illuminated surface pattern from a predetermined energy distribution pattern of an LED light source within an LED package having a light transmitting dome comprising
a potentially refracting outer and inner surface enveloping at least in part the light transmitting dome of the LED package; - and,
a carrier having a well defined therein, where the LED package is positioned within the well and where the outer and inner surfaces provide an energy distribution pattern in which a portion of light is directed outside of the well without impingement of light from the LED light source onto the well, which portion of light is emitted from the LED light source into at least a portion of a forward hemispherical solid angle centered on the LED light source, which portion of light would otherwise impinge on some portion of the well but for its redirection by the inner surface, which directs the portion of the light outside of the well. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of providing a predetermined illuminated surface pattern from a predetermined energy distribution pattern of an LED light source within an LED package having a light transmitting dome comprising:
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radiating light from the LED package into a forward hemispherical solid angle, the LED package being positioned in a well defined in a carrier onto which an optic having a potentially refracting outer and inner surface is mounted, which optic envelopes at least in part the light transmitting dome of the LED package; and refracting light with a flared skirt on the inner surface of the optic within the well to direct a portion of light outside of the well without the light impinging on the well, which portion of light is emitted from the LED light source into at least a portion of a forward hemispherical solid angle centered on the LED light source, which portion of light would otherwise impinge on some portion of the well but for its redirection by the flared skirt on the inner surface of the optic.
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Specification