Source: https://patents.google.com/patent/US9297520B2/en
Timestamp: 2019-04-19 19:23:22+00:00

Document:
2010-06-07 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38459646&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US9297520(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
The present application is a continuation of and claims priority under 35 U.S.C. §120 to U.S. patent application Ser. No. 13/858,713 filed on Apr. 8, 2013, which is a continuation of U.S. patent application Ser. No. 13/540,477 filed on Jul. 2, 2012, now U.S. Pat. No. 8,414,161, which was a continuation of U.S. patent application Ser. No. 13/109,609 filed on May 17, 2011, now U.S. Pat. No. 8,210,722, which was a continuation of U.S. patent application Ser. No. 12/690,794 filed on Jan. 20, 2010 now U.S. Pat. No. 7,942,559; which was a division of U.S. patent application Ser. No. 11/711,218 filed on Feb. 26, 2007 now U.S. Pat. No. 7,674,018, which claims priority under 35 U.S.C. §119 to U.S. Provisional Patent Application No. 60/777,310, filed on Feb. 27, 2006; U.S. Provisional Patent Application No. 60/838,035, filed on Aug. 15, 2006; and U.S. Provisional Patent Application No. 60/861,789, filed on Nov. 29, 2006, each of which are incorporated herein by reference. This application is also related to U.S. patent application Ser. No. 12/690,821 filed on Jan. 20, 2010 now U.S. Pat. No. 7,993,036; and U.S. patent application Ser. No. 13/109,582 filed on May 17, 2011.
FIG. 29 is a two dimensional iso-foot-candle plot of the light beam projected onto the ‘street’ from a device of the invention. This shows the nonradially symmetric output of a device of FIGS. 21-26. The designer has the freedom to control the shape of the lens to alter the output to match the requirements of the lighting task.
FIG. 5 shows a three quarter perspective view of another preferred embodiment 20 of the invention whereby the resultant beam energy pattern is not azimuthally symmetric. Circular lip 18 of FIGS. 6-9 represents a sealing feature that optionally allows the device 20 to be sealed when built into a light fixture or an array. The cross sectional view of FIG. 9 is taken through section line D-D of FIG. 5. The top plan view of the device 20 is represented by the diametrically opposing ‘blob’ segments 14 and the diametrically opposing smoother side segments 15 azimuthally orthogonal to the blob segments 14. It is easier to understand these profiles by looking at FIGS. 7 and 8, which show the profiles of the segments 14 and 15 from both horizontal and vertical directions respectively, and FIG. 6 which shows the device 20 in a rotated oblique view that shows its elongated profile. It can be seen in FIG. 7 that the illustrated profile in this view is similar to the device 20 shown in FIGS. 1 and 2. However, the similarity is lost when you examine the azimuthally orthogonal profile of FIG. 8. The ‘blob’ shape in the embodiment of FIG. 7 is defined by multiple cross-sections of segments 14 and 15 rotated about the centerline 23 in which the surface of lens 21 is lofted between cross-sections of segments 14 and 15 much like the lofting of a boat hull. By manipulating the shape of cross-sections of segments 14 and 15, the ‘blob’ or lobed segment 14 is defined as well as the smoothing of surface segments between the diametrically opposing ‘blobs’ or lobes 14.
Optional surface 53 is a blended contour between surfaces 52 and 58. Surface 57 is mirrored across intersection 54 in FIG. 23 and is lofted in the embodiment shown to redirect the centerline energy of the LED down the ‘curb’ direction. Surface 57 allows for very high efficiency for the lens 21 in both the street and the curb side of its light pattern.
FIG. 33 summarizes an overall conceptualization of the methodology of the invention. The problem solved by the invention is defined by two boundary conditions, namely the light pattern of the light source which is chosen at step 100 and the two dimensional iso-foot candle plot which is to be projected onto the surface which is intended to be illuminated in step 106. In the illustrated embodiment the problem of providing a wide beam street light pattern is assumed for the boundary condition of step 106 and the Lambertian pattern of an LED is assumed in the boundary condition 100. Thus, it can readily be understood that the same problem defined by different characterizations of the boundary conditions of steps 100 and 106 are expressly included within the scope of the claimed invention. For example, if has already be expressly mentioned that boundary condition 100 need not assume the Lambertian pattern of an LED, but may take as the boundary condition the three dimensional energy distribution pattern of a high intensity discharge (HID) lamp.
wherein each light module is operative to produce a pattern of light substantially matching said respective pattern of light with an intensity that is substantially equal to said respective intensity multiplied by the quantity.
2. The luminaire of claim 1, wherein the feature comprises a prism.
3. The luminaire of claim 1, wherein the feature comprises a refractive surface.
4. The luminaire of claim 1, wherein the lens comprises a depression disposed at an intersection between the first reference plane and a surface of the lens, the depression biased to a side of the second reference plane.
wherein the respective pattern of light is biased street side relative to curbside.
wherein the first reference plane extends between the two lobes.
7. The luminaire of claim 1, wherein each light module comprises a heat sink that conducts and dissipates heat.
wherein each light module produces a scaled version of the illumination pattern, the scaled version having a second intensity that is approximately equal to the intensity multiplied by the number.
wherein the plane of symmetry extends between the two lobes.
10. The street luminaire of claim 8, wherein the portion of the respective lens comprises a totally internally reflective surface oriented for reflecting said received light.
wherein the planes are substantially parallel to one another.
12. The street luminaire of claim 8, wherein the fixture is further operable to position the plurality of light modules substantially parallel to a surface of the street.
13. The street luminaire of claim 8, wherein when cast on a street surface, the illumination pattern is substantially symmetrical with respect to a line on the street surface that runs perpendicular to the plane.
14. The street luminaire of claim 8, wherein the illumination pattern forms a two-dimensional distribution of energy on a surface, and wherein the two-dimensional distribution of energy is divisible into two intensity patterns exhibiting substantial mirror image symmetry with respect to one another.
wherein the respective optic is operable to produce the illumination pattern of a third intensity, and the first intensity substantially equals the third intensity multiplied by the second number.
16. The street luminaire of claim 15, wherein the respective optic exhibits optical symmetry with respect to a centerline that is substantially perpendicular to the street.
17. The street luminaire of claim 15, wherein the respective optic comprises an outer surface comprising a plurality of lobes.
18. The street luminaire of claim 15, wherein the respective optic comprises a complex prism disposed on the first side of the respective optic.
19. The street luminaire of claim 15, wherein the illumination pattern provides a two-dimensional distribution of energy on a street surface, the two-dimensional distribution of energy divisible into two intensity patterns exhibiting mirror image symmetry with respect to one another.
20. The street luminaire of claim 15, wherein the second side of the respective optic and the first side of the respective optic differ from one another due at least to one different internally reflective feature and one different refractive feature.
European Search Report for application No. 15170016, Mailed Nov. 16, 2015.
LED's Magazine; High-Power LED's; multi-watt LED light Engines Offer Challenges and Opportuni-ties; ledmagazine.com Oct. 2005.
Timinger, Andreas, "Optical Design for LED-Street Lamps," Conference Paper, Solid-State and Or-ganic Lighting (SOLED), Karlsruhe, Germany, Jun. 21, 2010.

References: §120
 §119
 Application No. 60
 Application No. 60
 Application No. 60
 application No. 15170016