Not a window-like lamp, but bright LED lights are offered by many higher-end manufacturers such as Delta Light https://www.deltalight.com/en https://www.deltali

Not a window-like lamp, but bright LED lights are offered by many higher-end manufacturers such as Delta Light https://www.deltalight.com/en https://www.deltalight.com/en including light-temperature configurable ones such this one: https://www.deltalight.com/en/products/detail/supernova-line-65-tw-dim5-274-95-06-26-ed5 https://www.deltalight.com/en/products/detail/supernova-line... However, 10klux seems a bit too much, given the energy needed to drive the lamps and overall lamp brightness. Too much light can also have negative effects on the eye and moreover, you would just be unable to read your screen well at 10klux.