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.
There are two types of ND (neutral density) filters: absorptive and reflective. The absorptive type absorb light that is not transmitted, while the reflective type reflect it away. An absorptive ND filter has greatly reduced back reflections when compared to its reflective counterpart. This can be very important for various applications that are severely affected by back reflections, such as electronic imaging. However, since absorptive filters tend to absorb the light passing through them, the result is a slight increase in temperature. If critical temperature control is a factor in your application, we recommend using a reflective ND filter. Also, in absorptive ND filters, optical density is a function of glass thickness - the higher the optical density required, the thicker the filter will need to be. Reflective ND filters gain their properties through a coating material, allowing for thinner substrates and tighter thickness tolerances regardless of optical density. Care should be taken when using the reflective type of ND filter to insure that reflected light does not interfere with the application. In stacks, the reflective filters are not parallel in order to reduce back reflections.
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