camera lucida
/ˌkæmərəˈluːsɪdə/noun
- an instrument in which rays of light are reflected by a prism to produce an image on a sheet of paper, from which a drawing can be made明箱, 显画器, 投影描绘器, 描画镜。
词源
mid 18th cent.: from Latin, 'bright chamber', on the pattern of camera obscura.