Neutral density filters (ND filters) are commonly used in imaging or laser applications to avoid damage to camera sensors or other optical components caused by strong light. ND filters absorb or reflect the untransmitted portion of the light to evenly reduce the transmittance of a portion of the spectrum.
Basic parameters:
Material: optical grade glass
Range of consideration: 200nm~1100nm
Average cutoff rate: OD3~OD6 (cutoff depth affects transmittance)
Surface quality: 60/40
Shape: can be made round, square, shaped
Packing method: according to customer's requirement
Advantages:
Hard film plating, long service life; Accurate wavelength positioning; Ion source assisted evaporation; Small temperature drift; Good cutoff depth
Optical Filters is a kind of
optical component that has a targeted selection of spectral wavelength
transmission, reflection, cutoff, and attenuation. According to its function,
it can be divided into band pass filter, long pass filter, short pass filter,
and A color filter, a neutral density sheet (ND Filter), a notch filter, a cold
mirror, a heat mirror, a color filter, and the like. These filters are widely
used in industries such as spectroscopic analysis, biomedical, machine vision,
fluorescence microscopy, industrial automation, and other products. The
bandpass filter selectively allows a certain spectral wavelength to pass
through and block the transmission of a certain spectral wavelength in its
spectral range; the neutral density filter (ND Filter) reduces the
transmittance of a specified spectral wavelength range, thereby Reducing the
luminous flux, which is beneficial to the protection of sensors/electronic
components. It is widely used in the field of laser optics/optoelectronics;
cold/heat mirrors can be used for targeted reflection and transmission of
longer wavelengths in the spectral range. Application in the lighting system
helps to eliminate the heat generated in the lighting system. MAP optics can
customize filters for your needs.