Device and method for lighting
It is presented a method for producing a lighting device ( 1 ) comprising an Organic Light Emitting (abbreviated OLED) device ( 1 ) and a transparent image (I), the OLED device ( 2 ) comprising a first portion (P 1 ) with reduced light output capacity. A portion of the transparent image, having a first tone (T 1 ), is at least partially overlapping the first portion (P 1 ) of the OLED device ( 2 ). It is also presented a lighting device ( 1 ).
1. A method for producing a lighting device comprising an OLED device and a transparent image with a portion having a first tone, said OLED device comprising a light emitting component, the method comprising:
reducing a light output capacity of a first portion of the light emitting component to a first light output level, said first portion corresponding to said portion with said first tone of said transparent image such that at least partial overlapping of said transparent image over said first portion of the light emitting component enhances contrast between features of said transparent image; and
applying the transparent image onto the OLED device, wherein said portion with the first tone of said transparent image, at least partially, overlapping said first portion of said light emitting component.
2. The method as claimed in claim 1 , further comprising:
reducing light output capacity of a second portion of said light emitting component to a second light output level, said second portion corresponding to a second portion with a second tone of said transparent image, wherein applying said transparent image onto the OLED device further comprises said second portion of said image, at least partially, overlapping said second portion of the light emitting component.
3. The method as claimed in claim 1 , wherein said portion with the first tone of said transparent image is aligned with said first portion of the light emitting component.
4. The method as claimed in claim 2 , wherein said second portion with the second tone of said transparent image is aligned with said second portion of the light emitting component.
5. The method as claimed in claim 1 , wherein said reducing comprises irradiating the first portion of the light emitting component with laser light.
6. The method as claimed in claim 2 , wherein said reducing comprises irradiating the first portion of the light emitting component with laser light and wherein said reducing of the second portion of said light emitting component comprises irradiating said second portion of said light emitting component with laser light having a light intensity other than a light intensity of the laser light irradiating the first portion of the light emitting component.
7. The method as claimed in claim 5 , wherein a wavelength of said laser light is within an absorption band of said light emitting component.
8. The method as claimed in claim 1 , wherein said reducing comprises applying a mask comprising a mask image based on said transparent image, onto a substrate of said OLED device.
9. The method as claimed in claim 8 , wherein said mask image is based on a gray scale image of said transparent image.
10. The method as claimed in claim 8 , wherein said applying comprises rotating the transparent image with respect to said first portion of the light emitting component.
11. The method as claimed in any one of the preceding claims, further comprising encapsulating said OLED device prior to said reducing a light output capacity.
12. A lighting device comprising:
an OLED device comprising:
a light emitting component comprising a first portion with reduced light emitting capacity; and
a transparent image comprising a portion with a first tone, wherein said portion with the first tone of said transparent image is, at least partially, overlapping said first portion of the light emitting component and wherein the reduced light emitting capacity of said light emitting component enhances contrast between features of said transparent image.
13. The lighting device as claimed in claim 12 , wherein said light emitting component further comprises a second portion having a second light output level, said second portion corresponding to a second portion with a second tone of said transparent image, wherein said second portion with the second tone of said transparent image is, at least partially, overlapping said second portion of the light emitting component.
14. The lighting device as claimed in claim 12 , wherein said transparent image is applied to a first side and a second side, opposite said first side, of said OLED device.
15. A method for producing a lighting device comprising an OLED device and a transparent image with a portion having a first tone, said OLED device comprising a light emitting component, the method comprising:
reducing a light output capacity of a first portion of the light emitting component to a transparent image, wherein said reducing comprises applying a mask that is based on said transparent image onto a substrate of said OLED device; and
applying the transparent image onto the OLED device, wherein said portion with the first tone of said transparent image is, at least partially, overlapping said first portion of said light emitting component.
16. The method as claimed in claim 15 , wherein said mask includes a mask image that is based on a gray scale image of said transparent image.
17. The method as claimed in claim 15 , wherein said applying comprises rotating the transparent image with the respect to said first portion of the light emitting component.