Photogram Rayograph

The photogram is camera-less photography: objects laid directly on light-sensitive paper print as white and gray silhouettes on an inky black ground. Man Ray called his "rayographs"; Moholy-Nagy framed them as pure light composition. Fully exposed paper reads dense black, masked areas white, transparent objects gray — with silver halation where light bends around glass.

This system distills that avant-garde darkroom into an interface: ghost-white forms, generous black negative space, and crisp geometric silhouettes ringed with silver glow.

光影成像（photogram）是一种无相机摄影：将物体直接置于感光相纸上曝光，物体便以白色与灰色剪影的形式，浮现在墨黑的底色之上。曼·雷称之为"雷影照片"（rayograph），莫霍利-纳吉则将其视为纯粹的光的构成。完全曝光的相纸呈现致密的黑，被遮挡处留白，半透明物体显灰——光线绕过玻璃折射时，边缘还会泛起银色的光晕。

本设计系统将这一前卫暗房语言转化为界面：幽灵般的白色形体、慷慨的黑色负空间，以及边缘镶着银色光晕的硬朗几何剪影，在包豪斯式的构图平衡中展开。