Patent ID: 6915034

Claim:
An optical multiplexing device comprising: a light bandpass filter that passes a first light wavelength at a first angle of incidence, passes a second light wavelength at a second angle of incidence, and passes a third light wavelength at a third angle of incidence; a light source that directs a first incident beam including light of the first wavelength, light of the second wavelength, and light of the third wavelength at the first angle of incidence onto the light bandpass filter, the light bandpass filter passing the light of the first wavelength therethrough and reflecting a first reflected beam therefrom; a first light receptor and redirector that receives the first reflected beam, and redirects the first reflected beam back onto the light bandpass filter at the second angle of incidence as a second incident beam, the light bandpass filter passing the light of the second wavelength therethrough and reflecting a second reflected beam therefrom; and a second light receptor and redirector that receives the second reflected beam and redirects the second reflected beam back onto the light bandpass filter at the third angle of incidence as a third incident beam, the light bandpass filter passing the light of the third wavelength therethrough and reflecting a third reflected beam therefrom, wherein the first incident beam, the second incident beam, and the third incident beam are not coplanar.