| 摘要 |
<p>The filter (100) has two layers (101, 102) made of two materials from two material groups, respectively. The layers are homogenous, where preset layer thicknesses of the layers are selected such that the filter has two transmission curves in the spectral range with maximum of transmission of two wavelengths during vertical light incidence and light incidence with an incidence angle (140) in a range between 0 degrees and 30 degrees. One of the wavelengths is shifted less than 25 percent of half width of one of the curves with respect to the other wavelength. An independent claim is also included for a method for producing an optical filter.</p> |
