Dichroic filters are optical filters that selectively transmit or reflect light based on its wavelength, also known as colour.
They are made of borosilicate glass with a thin-film coating and these dichroic filters are designed to transmit red light while reflecting other colours. Dichroic filters are commonly used in various applications, including microscopy, photography, and lighting. The thin-film coating allows for a high level of spectral control, and the filters can be used in a variety of optical systems to selectively transmit and reflect red light.
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