Electro-optic system configured to reduce a perceived color change

1. An electrochromic system comprising:

an electrochromic element comprising:

a front element comprising first and second surfaces;

a rear element comprising third and fourth surfaces, wherein said front and rear elements are sealably bonded together in a spaced-apart relationship to define a chamber, such that said second surface and said third surface face one another;

a transparent first electrode comprising a layer of conductive material carried on said second surface;

an electrochromic medium contained in said chamber, wherein said electrochromic medium is adapted to be in at least a high transmittance state and a low transmittance state; and

an at least partially transmissive, partially reflective second electrode; and

a display device in optical communication with said electrochromic element, said display device comprising:

at least one light source; and

said display device being configured to emit at least a first primary and a second primary, and said first and second primaries each having a first hue (h ab ) when viewed through said electrochromic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electrochromic element in approximately said low transmittance state, wherein a change in said first and second hues (Δh ab ) for both first and second primaries is less than approximately 31 degrees.

2. The electrochromic system of claim 1 , wherein said change in said first and second hues (Δh ab ) for both said first and second primaries is less than approximately 25 degrees.

3. The electrochromic system of claim 1 , wherein said change in said first and second hues (Δh ab ) for both said first and second primaries is less than approximately 15 degrees.

4. The electrochromic system of claim 1 , wherein each of said first and second primaries has a first color (u′,v′) when viewed through said electrochromic element in approximately said high transmittance state and a second color (u′,v′)′ when viewed through said electrochromic element in approximately said low transmittance state, and a difference in said first and second colors (ΔE u′,v′ ) for said first and second primaries is less than approximately 0.06.

5. The electrochromic system of claim 1 , wherein said first primary is light having a red hue and said second primary is light having a green hue.

6. The electrochromic system of claim 1 , wherein both said first and second primaries exhibit said change in hue (Δh ab ) of less than approximately 31 degrees when viewed through said electrochromic element in approximately said high transmittance state and said electrochromic element in a transmittance state intermediate to said high and low transmittance states.

7. The electrochromic system of claim 1 , wherein said display device is further configured to emit a third primary having a first hue (h ab ) when viewed through said electrochromic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electrochromic element in approximately said low transmittance state, and a change in said first and second hues (Δh ab ) is less than approximately 41 degrees.

8. The electrochromic system of claim 7 , wherein said change in said first and second hues (Δh ab ) of said third primary is less than approximately 35 degrees.

9. The electrochromic system of claim 7 , wherein said change in said first and second hues (Δh ab ) of said third primary is less than approximately 20 degrees.

10. The electrochromic system of claim 7 , wherein said change in said first and second hues (Δh ab ) of said third primary is less than approximately 10 degrees.

11. The electrochromic system of claim 7 , wherein said third primary has a first color (u′,v′) when viewed through said electrochromic element in approximately said high transmittance state and a second color (u′,v′)′ when viewed through said electrochromic element in approximately said low transmittance state, and a difference in said first and second colors (ΔE u′,v′ ) for said third primary is less than approximately 0.05.

12. The electrochromic system of claim 7 , wherein said third primary is light having a blue hue.

13. The electrochromic system of claim 1 , wherein said display device is further configured to emit a fourth primary having a first hue (h ab ) when viewed through said electrochromic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electrochromic element in approximately said low transmittance state, and a change in said first and second hues (Δh ab ) is less than approximately 55 degrees.

14. The electrochromic system of claim 13 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 50 degrees.

15. The electrochromic system of claim 13 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 40 degrees.

16. The electrochromic system of claim 13 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 30 degrees.

17. The electrochromic system of claim 13 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 15 degrees.

18. The electrochromic system of claim 13 , wherein said fourth primary has a first color (u′,v′) when viewed through said electrochromic element in approximately said high transmittance state and a second color (u′,v′) when viewed through said electrochromic element in approximately said low transmittance state, and a difference in said first and second colors (ΔE u′,v′ ) for said fourth primary is less than approximately 0.05.

19. The electrochromic system of claim 13 , wherein said fourth primary is light having a yellow hue.

20. The electrochromic system of claim 1 , wherein a C* value of reflected light throughout a range of reflectance as said electrochromic element is altered between approximately said high transmittance state and approximately said low transmittance state is less than approximately 15.

21. A rearview mirror comprising:

an electro-optic element comprising:

a front element comprising first and second surfaces;

a rear element comprising third and fourth surfaces;

at least one reflective surface; and

an electro-optic medium in optical communication between said front element and said rear element, wherein said electro-optic medium is configured to adjust between at least a high transmittance state and a low transmittance state; and

a display device in optical communication with said electro-optic element, said display device comprising:

at least one light source; and

said display device being configured to emit at least a first primary and a second primary, and said first and second primaries each having a first hue (h ab ) when viewed through said electro-optic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electro-optic element in approximately said low transmittance state, wherein a change in said first and second hues (Δh ab ) for both first and second primaries is less than approximately 31 degrees.

22. The rearview mirror of claim 21 , wherein said change in said first and second hues (Δh ab ) for both said first and second primary primaries is less than approximately 25 degrees.

23. The rearview mirror of claim 21 , wherein said change in said first and second hues (Δh ab ) for both said first and second primaries is less than approximately 15 degrees.

24. The rearview mirror of claim 21 , wherein each of said first and second primaries has a first color (u′,v′) when viewed through said electro-optic element in approximately said high transmittance state and a second color (u′,v′)′ when viewed through said electro-optic element in approximately said low transmittance state, and a difference in said first and second colors (ΔE u′,v′ ) for said first and second primaries is less than approximately 0.06.

25. The rearview mirror of claim 21 , wherein said first primary is light having a red hue and said second primary is light having a green hue.

26. The rearview mirror of claim 21 , wherein both said first and second primaries exhibit said change in hue (Δh ab ) of less than approximately 31 degrees when viewed through said electro-optic element approximately in said high transmittance state and said electro-optic element in a transmittance state intermediate to said high and low transmittance states.

27. The rearview mirror of claim 21 , wherein said display device is further configured to emit a third primary having a first hue (h ab ) when viewed through said electro-optic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electro-optic element in approximately said low transmittance state, and a change in said first and second hues (Δh ab ) is less than approximately 41 degrees.

28. The rearview mirror of claim 27 , wherein said change in said first and second hues (Δh ab ) of said third primary is less than approximately 35 degrees.

29. The rearview mirror of claim 27 , wherein said change in said first and second hues (Δh ab ) of said third primary is less than approximately 20 degrees.

30. The rearview mirror of claim 27 , wherein said change in said first and second hues (Δh ab ) of said third primary is less than approximately 10 degrees.

31. The rearview mirror of claim 27 , wherein said third primary has a first color (u′,v′) when viewed through said electro-optic element in approximately said high transmittance state and a second color (u′,v′)′ when viewed through said electro-optic element in approximately said low transmittance state, and a difference in said first and second colors (ΔE u′,v′ ) for said third primary is less than approximately 0.05.

32. The rearview mirror of claim 27 , wherein said third primary is light having a blue hue.

33. The rearview mirror of claim 21 , wherein said display device is further configured to emit a fourth primary having a first hue (h ab ) when viewed through said electro-optic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electro-optic element in approximately said low transmittance state, and a change in said first and second hues (Δh ab ) is less than approximately 55 degrees.

34. The rearview mirror of claim 33 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 50 degrees.

35. The rearview mirror of claim 33 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 40 degrees.

36. The rearview mirror of claim 33 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 30 degrees.

37. The rearview mirror of claim 33 , wherein said change in said first and second hues (Δh ab ) for said fourth primary is less than approximately 15 degrees.

38. The rearview mirror of claim 33 , wherein said fourth primary has a first color (u′,v′) when viewed through said electro-optic element in approximately said high transmittance state and a second color (u′,v′)′ when viewed through said electro-optic element in approximately said low transmittance state, and a difference in said first and second colors (ΔE u′,v′ ) for said fourth primary is less than approximately 0.05.

39. The rearview minor of claim 33 , wherein said fourth primary is light having a yellow hue.

40. The rearview minor of claim 21 , wherein a C* value of reflected light throughout a range of reflectance as said electro-optic medium is altered between approximately said high transmittance state and approximately said low transmittance state is less than 15.

41. A electrochromic system comprising:

an electrochromic element comprising:

a front element comprising first and second surfaces;

a rear element comprising third and fourth surfaces, wherein said front and rear elements are sealably bonded together in a spaced-apart relationship to define a chamber, such that said second surface and said third surface face one another;

a transparent first electrode comprising a layer of conductive material carried on said second surface;

an electrochromic medium contained in said chamber, wherein said electrochromic medium is adapted to be in at least a high transmittance state and a low transmittance state; and

a partially transmissive, partially reflective layer; and

a display device in optical communication with said electrochromic element, said display device comprising:

at least one light source; and

said display device being configured to emit at least one primary that is light having at least one of a yellow hue and an amber hue, and said at least one primary having a first hue (h ab ) when viewed through said electrochromic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electrochromic device in approximately the low transmittance state, wherein a change in said first and second hues (Δh ab ) is less than approximately 55 degrees.

42. An electrochromic system comprising:

an electrochromic element comprising:

a front element comprising first and second surfaces;

a rear element comprising third and fourth surfaces, wherein said front and rear elements are sealably bonded together in a spaced-apart relationship to define a chamber, such that said second surface and said third surface face one another;

a transparent first electrode comprising a layer of conductive material carried on said second surface;

an electrochromic medium contained in said chamber, wherein said electrochromic medium is adapted to be in at least a high transmittance state and a low transmittance state; and

a partially transmissive, partially reflective layer; and

a display device in optical communication with said electrochromic element, said display device comprising:

at least one light source; and

said display device being configured to emit a primary that is light having a blue hue, and said primary having a first hue (h ab ) when viewed through said electrochromic element in approximately said high transmittance state and a second hue (h ab ′) when viewed through said electrochromic device in approximately the low transmittance state, wherein a change in said first and second hues (Δh ab ) is less than approximately 49 degrees.