Product Knowledge
polarizers and neutral density filters
Some people may think that in the modern era of digital photography, neutral density and polarization filters are not needed. Okay, No. Although many filters
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Neutral density (nd) filters
Neutral density (nd) filter: it can attenuate the light intensity. After passing through the neutral density filter, the light from the visible light region to
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Dichroic filter
Dichroic filter is a very accurate color filter, which is used to selectively pass through light and reflect other colors from a small range of
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What small details should be paid attention to in the ordinary use of long wave pass filters
Long wave pass filters are inseparable from our lives. Today, let’s take a look at the filters in our lives and where they are? For
Technical Knowledge
Parameters of optical elements
Understanding optical parameters In the design and production process of components or systems, the use of optical parameter specifications can make the components or systems
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The basic concepts of optical filters
1. Distinguish filters by spectral band: The filter is divided into ultraviolet filter, visible filter, near-infrared filter, infrared filter and far-infrared filter according to the
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Secrets of military optics and shortwave pass filters
Shortwave pass filter: cutting off the high frequency is the shortwave pass filter. Usually, it has two meanings. One is to filter out the light
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Bandpass filters
The band-pass filter is a filter adjacent to the cut-off band on both sides of the transmission band of the spectral characteristic curve. According to
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Introduction of right angle prism
Right angle prisms are usually used to turn the optical path or deflect the image formed by the optical system by 90 °. According to
Technical Knowledge
Pentagonal prism processing
From the optical path, it is obvious that the angle of 45 ° angle needs to be carefully controlled in order to meet the requirements