What material is the soft mirror made of?

Glass or resin glue.

The reason why the crescent-shaped soft lens is made of glass or resin glue is because these two materials have excellent transparency and can let light pass through, thereby achieving the focus and control of light by the crescent-shaped soft lens. With sufficient hardness and wear resistance, the crescent-shaped soft mirror needs to be durable and accurate in weighing, so the material needs to have a certain degree of hardness and wear resistance. Easy to process and shape, glass and resin glue are relatively easy to process such as cutting, grinding, and polishing, and can produce rectangular soft lenses of various specifications and shapes.

The crescent-shaped soft lens has excellent optical performance and can be used in photography, medical equipment, astronomical telescopes and other fields.