US 12,123,569 B2
Economical surgical lighting device and method of assembly
Minh-Hong Vu Thi, Orléans (FR); Jean-Philippe Breton, Orléans (FR); and Gregory Senelier, Orléans (FR)
Assigned to MAQUET SAS, Orléans (FR)
Filed by MAQUET SAS, Orléans (FR)
Filed on Feb. 20, 2023, as Appl. No. 18/171,601.
Application 18/171,601 is a continuation of application No. PCT/EP2021/072845, filed on Aug. 17, 2021.
Claims priority of application No. 2008640 (FR), filed on Aug. 24, 2020.
Prior Publication US 2023/0288034 A1, Sep. 14, 2023
Int. Cl. F21S 6/00 (2006.01); F21V 1/02 (2006.01); F21V 5/00 (2018.01); F21V 5/02 (2006.01); F21V 5/04 (2006.01); F21V 9/04 (2018.01); F21V 9/06 (2018.01); F21W 131/20 (2006.01); F21W 131/205 (2006.01); F21Y 115/10 (2016.01); G02B 3/00 (2006.01)
CPC F21S 6/006 (2013.01) [F21V 1/02 (2013.01); F21V 5/007 (2013.01); F21V 5/045 (2013.01); F21V 9/04 (2013.01); F21V 9/06 (2013.01); G02B 3/005 (2013.01); F21V 5/02 (2013.01); F21W 2131/20 (2013.01); F21W 2131/205 (2013.01); F21Y 2115/10 (2016.08)] 17 Claims
OG exemplary drawing
 
1. A surgical lighting device comprising:
a shell, and a plurality of light sources coupled to the shell,
a closure plate which is at least partially transparent to light, and which is coupled to the shell to substantially close off an internal area of the surgical lighting device, the closure plate being configured for passing light from the light sources,
the closure plate comprising a base plate and a plurality of lens elements, each lens element comprising a Fresnel lens, the Fresnel lenses each comprising a central lens area surrounded by a series of raised teeth concentrically disposed on an interior surface of the closure plate, each lens element being configured to collect and focus light from at least one light source to generate an illumination spot,
wherein the base plate comprises a plurality of notches corresponding to a shape of a respective lens element, the notches being oriented towards the internal area of the lighting device, and wherein the lenses are each attached in corresponding notches on the base plate;
the light sources and the closure plate being arranged such that light from the light sources reaches and enters the lens elements substantially without prior reflection or deflection, the device being free of optical elements between the light sources (10) and the closure plate; and
wherein a substantially empty space is provided between the light sources and the plurality of lens elements.