also: カメラオブスクーラ
noun
camera obscura
A darkened box or room with a small hole that projects an inverted image of the outside scene. Used historically in art and early photography.
カメラオブスキュラは、写真機の原型と言われている。
The camera obscura is said to be the prototype of the photographic camera.
美術の授業で、カメラオブスキュラの仕組
In art class, we learned how a camera obscura works.