An optical device comprising: a first prism including: a first light-wave entrance surface, a second light-wave entrance surface, and a light-wave exit surface, and a first dichroic beamsplitter configuration deployed within the first prism on a plane oblique to at least one of the light-wave entrance surfaces (14, 16); and a second prism including: a first light-wave entrance surface, and a second light-wave entrance surface associated with the light-wave exit surface of the first prism, and a second dichroic beamsplitter configuration deployed within the second prism on a plane oblique to at least one of the light-wave entrance surfaces (34, 36) of the second prism and such that light in a first polarization state with regards to the first dichroic beamsplitter configuration is in a second polarization state with regards to the second dichroic beamsplitter configuration, the first dichroic beamsplitter configuration transmitting light at a wavelength of a first color, polarized in the first polarization state with regards to the first dichroic beamsplitter configuration, and reflecting light at a wavelength of a second color, polarized in the first polarization state with regards to the first dichroic beamsplitter configuration, and the second dichroic beamsplitter configuration transmitting light at a wavelength of the first color and light at a wavelength of second color, polarized in the second polarization state with regards to the second dichroic beamsplitter configuration, and reflecting light at a wavelength of a third color, polarized in the first polarization state with regards to the second dichroic beamsplitter configuration. a first prism including: a first light-wave entrance surface, a second light-wave entrance surface, and a light-wave exit surface, and a first dichroic beamsplitter configuration deployed within the first prism on a plane oblique to at least one of the light-wave entrance surfaces (14, 16); and a first light-wave entrance surface, a second light-wave entrance surface, and a light-wave exit surface, and a first dichroic beamsplitter configuration deployed within the first prism on a plane oblique to at least one of the light-wave entrance surfaces (14, 16); and a second prism including: a first light-wave entrance surface, and a second light-wave entrance surface associated with the light-wave exit surface of the first prism, and a second dichroic beamsplitter configuration deployed within the second prism on a plane oblique to at least one of the light-wave entrance surfaces (34, 36) of the second prism and such that light in a first polarization state with regards to the first dichroic beamsplitter configuration is in a second polarization state with regards to the second dichroic beamsplitter configuration, a first light-wave entrance surface, and a second light-wave entrance surface associated with the light-wave exit surface of the first prism, and a second dichroic beamsplitter configuration deployed within the second prism on a plane oblique to at least one of the light-wave entrance surfaces (34, 36) of the second prism and such that light in a first polarization state with regards to the first dichroic beamsplitter configuration is in a second polarization state with regards to the second dichroic beamsplitter configuration, the first dichroic beamsplitter configuration transmitting light at a wavelength of a first color, polarized in the first polarization state with regards to the first dichroic beamsplitter configuration, and reflecting light at a wavelength of a second color, polarized in the first polarization state with regards to the first dichroic beamsplitter configuration, and the second dichroic beamsplitter configuration transmitting light at a wavelength of the first color and light at a wavelength of second color, polarized in the second polarization state with regards to the second dichroic beamsplitter configuration, and reflecting light at a wavelength of a third color, polarized in the first polarization state with regards to the second dichroic beamsplitter configuration.