에드몬드옵틱스는 당사 웹사이트의 기능과 콘텐츠를 최적화하고 개선하기 위해 쿠키를 사용합니다.‘OK’ 버튼을 클릭하면 전체 쿠키 정책에 동의하게 되며,‘세부 정보 표시’ 버튼을 클릭하면 더 자세한 정보를 확인할 수 있습니다.당사는 수집된 쿠키를 통해 제공되는 정보를 판매하지 않으며 해당 정보는 사용자 경험을 개선하는 용도로만 사용됩니다.
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Some of the data collected by this provider is for the purposes of personalization and measuring advertising effectiveness.
Some of the data collected by this provider is for the purposes of personalization and measuring advertising effectiveness.
An ND, or neutral density filter, is a type of filter designed to decrease the intensity of the input light without affecting the color (or spectral) distribution. Due to this neutral characteristic, the filters appear gray in color. ND filters are typically designated by their optical density (OD). Transmission for an ND filter can be calculated by using the equation T=10-OD x 100 = Percent transmission Where OD is the optical density of the ND filter. Typical applications for ND filters include decreasing light consistently over the visible or near infrared spectrum, protecting sensing devices from excessive intensity, such as blooming/overexposure of CCD cameras or testing the linearity of a photodetector or photodiode. ND filters are preferred over polarizers for reducing light in the case of extreme light intensities.
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