noun
inverted image
Technical term in optics and photography for an image that is upside down relative to the object.
レンズを通して見ると、物体の倒立像がスクリーンに映る。
When viewed through the lens, an inverted image of the object appears on the screen.
正立像 means an erect (upright) image, the opposite of 倒立像.
Compound of 倒立 (inversion, standing upside down) and 像 (image).