photogram

詳細解釋：

pho.to.gram

n.（名詞）
An image produced without a camera by placing an object in contact with film or photosensitive paper and exposing it to light.
黑影照片：不用照相機，通過將物體和膠捲或感光紙接觸並暴光而產生的圖像
A photograph.
照片