Method for controlling air gap thickness in Otto structure by using dielectric film
A dielectric film, air gap technology, applied in the direction of using optical devices, instruments, measuring devices, etc., can solve problems such as difficult control, influence, and insufficient accuracy of mechanical control methods
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[0035] In order to clarify the technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited by this.
[0036] Please refer to figure 1 , figure 1 It is a schematic diagram of the Otto structure formed after implementing the invention on the bottom surface of the prism. The structure is composed of four parts: an isosceles rectangular prism 1, a fixed air gap thickness 2, a rectangular parallelepiped dielectric film 3, and a metal film 4 to be tested.
[0037] Please refer to figure 2 , figure 2 It is a schematic diagram of the Otto structure formed after implementing the invention at both ends of the cylindrical mirror surface, wherein (a) is a front view of the structure, and (b) is a side view of the structure, and the structure is composed of five parts: prism 1, Cylindrical mirror 5...
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