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1. (WO2008060630) STRUCTURES DE RÉDUCTION DE BRUIT INTERNE DANS DES SYSTÈMES DE CAMÉRA EMPLOYANT UNE PILE OPTIQUE ET DES PROCÉDÉS ASSOCIÉS
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

What is Claimed is:
1. A camera system, comprising:
an optics stack including first and second substrates secured together in a stacking direction, one of the first and seconds substrates including an optical element; a detector on a sensor substrate; and
a feature reducing an amount of light entering at an angle greater than a field of view of the camera system from reaching the detector, the feature being on another of the first and second substrates.

2. The camera system as claimed in claim 1, wherein the optical element is on the first substrate and the second substrate is a spacer substrate providing an air gap between the optical element and the detector.

3. The camera system as claimed in claim 2, wherein the feature of the spacer substrate is an angled sidewall that is continuous from an upper surface of the spacer substrate to a lower surface of the spacer substrate.

4. The camera system as claimed in claim 3, wherein the sidewall defines a smaller opening at the upper surface of the spacer substrate than at the lower surface of the spacer substrate.

5. The camera system as claimed in claim 3, further comprising one of an anti-reflective coating on the sidewall and an absorptive coating on the sidewall.

6. The camera system as claimed in claim 2, wherein the feature of the spacer substrate is a sidewall that is beveled.

7. The camera system as claimed in claim 6, wherein, the sidewall defines a same size opening at the upper surface of the spacer substrate and at the lower surface of the spacer substrate.

8 The camera system as claimed in claim 2, wherein the sidewall defines an opening at the upper surface of the spacer substrate that is different than an opening at the lower surface of the spacer substrate.

9. The camera system as claimed in claim 2, further comprising one of an absorptive coating and an anti-reflective coating on a sidewall adjacent the air gap.

10. The camera system as claimed in claim 2, wherein the spacer substrate is formed of an optically absorbing material.

11. The camera system as claimed in claim 10, wherein the optically absorbing material is a polymeric material.

12. The camera system as claimed in claim 10, wherein the spacer substrate is opaque.

13. The camera system as claimed in claim 10, wherein the spacer substrate is a glass material.

14. The camera system as claimed in claim 1 , wherein the feature of the second substrate is that the second substrate is formed of an optically absorbing material, the second substrate also representing a bonding layer.

15. The camera system as claimed in claim 1 , further comprising
an absorbing layer interposed between a final surface and the sensor substrate, the absorbing layer configured to absorb light scattered by the sensor substrate.

16. The camera system as claimed in claim 15, further comprising a cover plate between the optics stack and the sensor substrate, wherein the absorbing layer is directly on the cover plate.

17. A camera system, comprising: an optics stack including first and second substrates secured together in a stacking direction, a surface of at least one of the first and second substrates including at least two lenses thereon;
active areas on a sensor substrate, corresponding active areas adapted to receive an image from a corresponding lens of the at least two lenses; and
a baffle between an upper surface of a last substrate of the optics stack and the sensor substrate.

18. The camera system as claimed in claim 17, further comprising a spacer substrate in between the first and second substrates.

19. The camera system as claimed in claim 18, wherein the spacer substrate includes a feature reducing an amount of light entering the optical system at an angle greater than a field of view of the camera system from reaching the detector.

20. The camera system as claimed in claim 17, wherein the baffle is in an indent on a bottom surface of the last substrate in the optics stack.

21. The camera system as claimed in claim 17, wherein the baffle is on a bottom surface of the last substrate in the optics stack.

22. The camera system as claimed in claim 17, further comprising a cover plate attached to the sensor substrate, wherein the baffle is on the cover plate.

23. The camera system as claimed in claim 22, wherein the baffle is between the cover plate and the last substrate in the optics stack.

24. A method of forming an inchoate optical module, the method comprising: providing a first substrate having at least one optical feature;
providing a patterned optically absorbing material in a solid form as a second substrate; and providing a third substrate having at least one optical feature on the second substrate to form an optics stack including the first, second and third substrates stacked in a stacking direction.

25. The method as claimed in claim 24, wherein the optically absorbing material is a polymeric material.