US 12,032,198 B2
Tensioner for optical films
Westly David Hetrick, Atlanta, GA (US)
Assigned to SIGNIFY HOLDING, B.V., Eindhoven (NL)
Appl. No. 18/024,537
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Sep. 10, 2021, PCT No. PCT/EP2021/074965
§ 371(c)(1), (2) Date Mar. 3, 2023,
PCT Pub. No. WO2022/063609, PCT Pub. Date Mar. 31, 2022.
Claims priority of provisional application 63/081,401, filed on Sep. 22, 2020.
Claims priority of application No. 20197982 (EP), filed on Sep. 24, 2020.
Prior Publication US 2023/0314694 A1, Oct. 5, 2023
Int. Cl. F21V 8/00 (2006.01); F21V 11/16 (2006.01)
CPC G02B 6/0088 (2013.01) [F21V 11/16 (2013.01); G02B 6/005 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A light emitting device comprising an optical film and a tensioner, wherein the tensioner is configured to accommodate a change in shape and/or position of the optical film, and wherein the tensioner comprises:
at least one resilient element, and
a housing frame configured to be connected to a backplate of the light emitting device, the housing frame including at least one mounting opening configured to accommodate the at least one resilient element,
the at least one resilient element being provided between the housing frame and the optical film;
wherein the at least one resilient element is made of any one of a compressible material, a resilient material and a silicone, and is arranged to flexibly adapt and/or adjust to the different expansion and restriction conditions and position variations of the optical film
wherein the at least one resilient element is placed in the at least one mounting opening, wherein the at least one resilient element is adapted to be in contact with the optical film, and wherein the at least one resilient element is arranged inclined with respect to a plane (P) in which the optical film extends,
wherein the at least one resilient element is adhered to the at least one mounting opening, or wherein the at least one resilient element is attached to the at least one mounting opening by means of friction,
wherein the at least one resilient element is deformable from a rest position to a stress position, and wherein the rest position occurs when there is no tension applied to the at least one resilient element, and wherein the stress position occurs when such an amount of tension is applied to the at least one resilient element that the resilient element is caused to flex into contact with an upper surface of the mounting opening.