It would seem to be easy, go to a specialty store and bought plenty of range of one light fixture that looking for ... Most luminaire manufacturers target specific standards. They do not always take into account the individual characteristics of the room lighting, architectural details, garden, etc.
In the traditional Japanese garden there is nothing bombastic. All parts are laconic, no backlight is active. Designed by individual sketches stylized Japanese lantern taken a worthy place among the plants and garden attributes.