Integrated-circuit technology photosensitive sensor

Details Integrated-circuit technology photosensitive sensor Integrated-circuit technology photosensitive sensor

H - Electricity

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L

H01L 31/0232 (2006.01) G02B 5/32 (2006.01) H01L 27/146 (2006.01) H04N 5/225 (2006.01)

Patent

CA 2432528

The invention concerns photosensitive sensors, in particular electronic image sensors in CMOS integrated circuit technology. The sensor (40) comprises a substrate (42) having an array of pixels (44) forming a photosensitive surface receiving light beams (r1, r2, r3, r4, r5, r6) and in the path of the light beams, a holographic layer (48) having a registered hologram, the holographic layer having an optical function corresponding to the reciprocal of a function of spatial diffusion so as to bring closer to the normal at the photosensitive surface, the light beams arriving on the layer under dispersed oblique incident angles. The invention is applicable to low-cost cameras, optical sensors.

L'invention concerne les capteurs photosensibles, notamment les capteurs électroniques d'images en technologie des circuits intégrés CMOS. Le capteur (40) comporte un substrat (42) ayant un réseau de pixels (44) formant une surface photosensible recevant des rayons lumineux (r1, r2, r3, r4, r5, r6) et dans le trajet des rayons lumineux, une couche holographique (48) ayant un hologramme enregistré, la couche holographique ayant une fonction optique correspondant à l'inverse d'une fonction de diffusion spatiale de manière à rapprocher de la normale à la surface photosensible, les rayons lumineux arrivant sur la couche sous des incidences obliques dispersées. Application: caméras numériques faible coût, capteurs optiques.

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