Product Description:A negative filter is a notch filter, also commonly called a band-stop or band-suppression filter, which means that the light with a cut-off characteristic of a given wavelength can transmit as much spectrum as possible in the remaining wavelength bands, and the spectral characteristics are concave. shaped filter. It is a relatively cut-off filter, which is mainly used to eliminate or reduce specific light and enhance other spectral energy. The cut-off depth and the flatness of the transmission area are the key measurement parameters of the index.
Material: BK7 or Quartz
Dimensional tolerance: +0/-0.15mm
Thickness tolerance: ±0.1mm
Effective clear aperture: >90% central area
Parallelism: <30″
Finish: 20/10
Flatness: λ/4
Chamfer: 0.25-0.75mm x 45°±15°
Use angle: 0°
Spectral indicators: customized according to customer requirements
Main Cooperation Materials Manufacturers: CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC
Main Export Countries & Areas: Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.
Raytekoptics Extra value added services offered: 1). Optical workcraft & process solution design; 2). Rough processing raw materials; 3). Semi finishing raw materials; 4). Fabricate custom sizes and shapes; 5). Design and supply custom coatings; 6). Modify and resurface customer supplied materials; 7). Drill holes, notch glass and provide beveled substrates; 8). Precision polish optics with non-standard aspect ratios;
Payment Method: by T/T or Western Union. Delivery time: 7-10 days. Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offersquality warranty for our optics products with "3R" policy. For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.
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