Optical filter and organic light-emitting device including the same

1. An optical filter comprising:

a photochromic layer;

a polarizing film;

a retardation film; and

a color adhesive layer,

wherein the photochromic layer comprises a first dye which absorbs light having a wavelength from about 460 to about 540 nm and a second dye which absorbs light having a wavelength from about 560 to about 665 nm, and

wherein the color adhesive layer comprises a light absorbing material which absorbs light having a wavelength from about 460 to about 540 nm and light having a wavelength from about 560 to about 665 nm.

2. The optical filter of claim 1 , wherein transmittance of light having a wavelength from about 460 to about 540 nm of the photochromic layer is about 50% or less.

3. The optical filter of claim 1 , wherein transmittance of light having a wavelength from about 560 to about 665 nm of the photochromic layer is about 50% or less.

4. The optical filter of claim 1 , wherein the first dye comprises a spiroxazine compound or a naphthopyran compound.

5. The optical filter of claim 1 , wherein the first dye comprises a spiroxazine compound.

6. The optical filter of claim 1 , wherein the second dye comprises a spiroxazine compound or a naphthopyran compound.

7. The optical filter of claim 1 , wherein the second dye comprises a naphthopyran compound.

8. The optical filter of claim 1 , wherein the weight ratio of the first dye to the second dye is from about 1:1 to about 1:5.

9. The optical filter of claim 1 , wherein the thickness of the photochromic layer is from about 0.1 to about 20 μm.

10. The optical filter of claim 1 , wherein transmittance of light having a wavelength from about 460 to about 540 nm and light having a wavelength from about 560 to about 665 nm of the color adhesive layer is about 50% or less.

11. The optical filter of claim 1 , wherein the light absorbing material is carbon black.

12. The optical filter of claim 1 , wherein the thickness of the color adhesive layer is from about 0.1 to about 10 μm.

13. The optical filter of claim 1 , wherein the polarizing film comprises a matrix, iodine, and a third dye.

14. The optical filter of claim 1 , wherein the weight ratio of the iodine to a third dye is from about 1:1 to about 1:2.

15. The optical filter of claim 1 , wherein the thickness of the polarizing film is from about 15 to about 30 μm.

16. The optical filter of claim 1 , further comprising a first base layer disposed between the polarizing film and the photochromic layer, and a second base layer disposed between the polarizing film and the color adhesive layer.

17. The optical filter of claim 16 , wherein the first and second base layers are each triacetyl cellulose (TAC).

18. An organic light-emitting device comprising:

a substrate comprising an organic light-emitting element; and

an optical filter located on a path of light emitted from the organic light-emitting element,

wherein the optical filter is the optical filter of claim 1 .

19. The optical light-emitting device of claim 18 , wherein, assuming that an intensity of a first light beam having a peak wavelength of about 460 to about 540 nm emitted from the organic light-emitting element is A, and the intensity of the first light beam that has passed through the optical filter after being emitted from the organic light-emitting element is B, B/A×100 (%) is equal to or less than about 50%, and

wherein assuming that an intensity of a second light beam having a peak wavelength of from about 560 to about 665 nm emitted from the organic light-emitting element is C, and the intensity of the second light beam that has passed through the optical filter after being emitted from the organic light-emitting element is D, D/C×100 (%) is equal to or less than about 50%.