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Optical window (Window) is an optical flat plate, it does not change the optical magnification, but only affects the optical path in the optical path. It can be used to guide light into the optical system and isolate dust and water vapor, thereby protecting the internal components of the instrument. The light window is used as the protection and sealing window of the instrument or component , and it is required not to affect the image quality and precision of the system . Therefore, sometimes it is necessary to have high transmission wavefront distortion requirements, High transmittance requirements and high parallelism requirements.
Product Description
Optical window (Window) is an optical flat plate, it does not change the optical magnification, but only affects the optical path in the optical path. It can be used to guide light into the optical system and isolate dust and water vapor, thereby protecting the internal components of the instrument. The light window is used as the protection and sealing window of the instrument or component , and it is required not to affect the image quality and precision of the system . Therefore, sometimes it is necessary to have high transmission wavefront distortion requirements, High transmittance requirements and high parallelism requirements.
Shanghai Optics can provide standard precision and high precision windows of various materials according to customer's customized requirements, including ZnSe, Ge, Si, CaF2 windows used in the infrared band, fused silica and sapphire windows used in the ultraviolet band, And K9 windows used in the visible light band , etc.
Product parameters
standard | high precision | |
Material | BK7, K9, quartz, sapphire, silicon, germanium, zinc selenide, calcium fluoride, magnesium fluoride, zinc sulfide, lithium fluoride, barium fluoride, etc. | |
Flatness | λ/ 4 @632.8nm | λ/ 10 @632.8nm |
Dimensional tolerance | ±0. 1 mm | ±0 . 03mm |
Thickness Tolerance | ±0 . 2mm | ±0. 05 mm |
Effective Clear Aperture | > 90 % | > 90 % |
Parallelism | < 1′ | ＜ 10 ″ |
Verticality | ＜ 10′ | ＜ 10 ″ |
Angle Tolerance | < 3′ | ＜ 30 ″ |
smoothness | 4 0/ 2 0 | 20/10 |
Chamfer | 0.1-0.5mm*45° | 0.1-0.5mm*45° |
coating | According to customer requirements | According to customer requirements |
