Optical layer device with reflecting surface on collodion foil

US4097126A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Hans Mahlein · Unterhaching, DE
• Walter Rauscher · Munich, DE

Key dates

• Filing date: May 25, 1976
• Grant date: Jun 27, 1978
• Expiry date: May 25, 1996

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/105
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An optical layer device having a substrate with a surface having one or more layers of either dielectric or metallic materials provided thereon characterized by the substrate being mounted on a holder and being of an elastically deformable material and means for deforming the substrate so that the substrate may be deformed in a predetermined spherical or aspherical fashion. Depending on the construction of the layers, the device may be utilized as either a variable reflector or a variable interference filter. In one embodiment of the invention, the deforming of the substrate is accomplished by varying a pneumatic pressure in the chamber which pressure contacts one surface of the substrate. In another embodiment of the invention, the deforming is accomplished by selectively heating the holder and substrate so that a predetermined deformation is caused by the different rate of thermal expansion for the holder and substrate.