Beam splitter cross for use in color beam splitter and beam splitter combination for bifurcating color distribution, has color splitting layer, which is applied with cut-off length that divides incident light beam

摘要

The beam splitter cross comprises a color splitting layer (F-rt), which is applied with a cut-off length (GW) that divides an incident light beam, such that the color splitting layer reflects the shorter wavelength and transmits the longer wavelength. Another color splitting layer (F-tr) is applied with the cut-off length, which divides the incident light beam, such that the latter color splitting layer transmits shorter wavelength and reflects longer wavelength. A cross-shaped arrangement is provided with four arms. Independent claims are included for the following: (1) a color beam splitter comprises a beam splitter cross; and (2) a beam splitter combination comprises a beam splitter cross.