US 12,461,442 B2
Diffractive optical element
Nitesh Gulati, Rosebery (AU); Vincent Choo, Rosebery (AU); Yiwei Xu, Rosebery (AU); Glenn Wayne Baxter, Hornsby Heights (AU); and Steven James Frisken, Vaucluse (AU)
Assigned to II-VI DELAWARE, INC., Wilmington, DE (US)
Filed by II-VI Delaware, Inc., Wilmington, DE (US)
Filed on Jul. 29, 2024, as Appl. No. 18/787,865.
Application 17/651,699 is a division of application No. 16/382,137, filed on Apr. 11, 2019, granted, now 11,300,874, issued on Apr. 12, 2022.
Application 18/787,865 is a continuation of application No. 17/651,699, filed on Feb. 18, 2022, granted, now 12,078,928.
Claims priority of provisional application 62/657,739, filed on Apr. 14, 2018.
Prior Publication US 2024/0384841 A1, Nov. 21, 2024
Int. Cl. G03F 7/00 (2006.01); F21K 9/232 (2016.01); F21K 9/238 (2016.01); F21V 5/04 (2006.01); G02B 3/00 (2006.01); G02B 5/18 (2006.01); F21Y 115/10 (2016.01)
CPC G03F 7/0005 (2013.01) [F21K 9/232 (2016.08); F21K 9/238 (2016.08); F21V 5/04 (2013.01); G02B 3/0012 (2013.01); G02B 3/0018 (2013.01); G02B 5/1814 (2013.01); G02B 5/1857 (2013.01); F21Y 2115/10 (2016.08)] 31 Claims
OG exemplary drawing
 
1. A diffractive optical element including:
a prism;
an input surface of the prism configured to receive an input optical beam;
a diffractive surface of the prism adapted to spatially disperse the input optical beam into a dispersed signal;
an output surface of the prism configured to output the dispersed signal;
wherein the output surface and the diffractive surface are non-parallel; and
wherein the diffractive surface is formed on a surface of the prism.