0 a box, room, or device with a small hole that lets light through and shows an image on an opposite surface -- 暗箱（早期的照相机）
The tower itself is a local landmark and was once a camera obscura.
He turned one of the museum's galleries into a camera obscura by blocking the windows and leaving one pinhole.
Daguerre used the camera obscura to record topographical views of his dioramas.
With pinhole cameras and camera obscura it was only possible to project an image of actual scene, such as an image of the sun, on a surface.
Lutters most prominent work utilizes a room-sized "camera obscura" to capture large black and white negative images.
He also studied the camera obscura.
He ultimately failed at his goal of using the process to create fixed images created by a camera obscura.
To aid his viewing he arranged a mirror on the camera obscura principle, so that the four compass directions could be seen in one glass.
