US 10,323,826 B2
Optical system, method, and applications
Luc Guy Louis Lacroix, Groton, MA (US)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 15/769,577
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Oct. 18, 2016, PCT No. PCT/EP2016/074954
§ 371(c)(1), (2) Date Apr. 19, 2018,
PCT Pub. No. WO2017/067915, PCT Pub. Date Apr. 27, 2017.
Claims priority of provisional application 62/243,806, filed on Oct. 20, 2015.
Prior Publication US 2018/0313519 A1, Nov. 1, 2018
Int. Cl. F21V 5/00 (2018.01); F21V 5/04 (2006.01); F21V 7/00 (2006.01); F21V 7/07 (2006.01); G02B 19/00 (2006.01); F21Y 113/13 (2016.01); F21Y 113/17 (2016.01); F21Y 115/10 (2016.01)
CPC F21V 7/0091 (2013.01) [F21V 5/04 (2013.01); F21V 7/0066 (2013.01); F21V 7/0083 (2013.01); F21V 7/07 (2013.01); G02B 19/0028 (2013.01); G02B 19/0066 (2013.01); F21V 5/007 (2013.01); F21Y 2113/13 (2016.08); F21Y 2113/17 (2016.08); F21Y 2115/10 (2016.08)] 15 Claims
OG exemplary drawing
 
1. An optical system, comprising:
at least one 2×2 LED array forming a node consisting of four different color LEDs: LED1 (G), LED2 (R), LED3 (B), LED4 (W) and
at least one respective light-directing housing forming an optic having a base end and a light-emitting end, in which the node is disposed in the base end,
wherein the optic is characterized by a shape having four different focal points (F1, F2, F3, F4), and by comprising a spline (S1) and a hyperbola conic (H1) as profile sections,
wherein each of the LED1, LED2, LED3, LED4 is disposed at a respective focal point of both the spline (S1) and the hyperbola conic (H1).