Multi-color variable transmission optical device

A multi-color variable transmission optical device (“MC-VTOD”) comprising:

• a first cell comprising a first electro-optic material having a first absorption profile provided between a first pair of substrates, wherein the first electro-optic material is capable of changing from a state of higher light transmittance to a state of lower light transmittance in a first wavelength region upon a change in a first electric field applied across the first electro-optical material;
• a second cell in optical communication with the first cell, the second cell comprising a second electro-optic material having a second absorption profile provided between a second pair of substrates, wherein the second electro-optic material is capable of changing from a state of higher light transmittance to a state of lower light transmittance in a second wavelength region different from the first wavelength region upon a change in a second electric field applied across the second electro-optical material;
• and
• a controller comprising a power supply for independently controlling the electric field applied to the first cell and the second cell,
• wherein:
• a) the MC-VTOD is switchable between i) a clear state wherein the first cell and second cell are each in the state of higher light transmission, ii) a first tinted state wherein the first cell is in a state of lower light transmittance and the second cell is in a state of higher light transmittance, iii) a second tinted state wherein the first cell is in a state of higher light transmittance and the second cell is in a state of lower transmittance, and iv) a third tinted state wherein both the first and second cells are in a state of lower transmittance;
• and
• b) at least one of the clear state or the first, second, or third tinted states is a colorimetrically neutral state.