Optical-to-electrical signal transducer apparatus
阅读：561发布：2023-03-06
专利汇可以提供Optical-to-electrical signal transducer apparatus专利检索，专利查询，专利分析的服务。并且A photosensitive semiconductor array includes a plurality of photodiodes with separate output electrodes and color filters overlaying each photodiode. Each of the photodiodes, when simultaneously exposed to a point source of image bearing multicolored light focused on the photodiode array, responds by producing signals at its output terminals. The size of each photodiode and the filters overlaying same may be altered to change the response thereof. The photodiode array is useful in translating a light beam scanning motion picture film frames into red, green and blue color signals.，下面是Optical-to-electrical signal transducer apparatus专利的具体信息内容。
1. For use in apparatus including means for forming and projecting a beam of light along an optical axis, a device for producing a plurality of electrical signals representative of colors within such a light beam comprising: a. a semiconductor element positIoned along the axis so that the light beam will impinge thereon, said semiconductor element comprising a first portion formed by a semiconductor material of a first type and having opposed first and second surfaces, a second portion formed by electrical insulating material and having opposed first and second surfaces, said first surface of said insulating material being in contact with said second surface of said semiconductor material of said first type, and a third portion formed by semiconductor material of a second type and having opposed first and second surfaces, said first surface of said semiconductor material of said second type being in contact with said second surface of said insulating material; b. means extending from said second surface of said semiconductor material of said second type to said first surface of said insulating material for dividing said semiconductor material of said second type and said insulating material into a plurality of corresponding sections such that each of said corresponding sections is electrically isolated from each of said other corresponding sections; c. electrical means for rendering said semiconductor element responsive to light such that each of said isolated sections produces an electrical output signal having a parameter thereof related to the intensity of light incident on that particular section; and d. means positioned relative to said semiconductor element for restricting the light impinging on each of said sections from the beam to light of a particular color, different for each section, so that a plurality of electrical signals are produced, each of said signals having a parameter related to the amount of a particular color within the light beam.
2. A device as defined in claim 1 wherein said semiconductor material of said second type is permeable to light.
3. A device as defined in claim 2 wherein said light restricting means includes means for dividing the light beam into a plurality of non-overlapping secondary beams of light.
4. A device as defined in claim 3 wherein said light restricting means comprises a plurality of individually distinct color filters arranged in a common plane transverse to the optical axis, said plane being located relative to said semiconductor material of said second type such that each of said color filters is effectively individually superimposed on a corresponding one of said electrically isolated sections.
5. A device as defined in claim 1 wherein said semiconductor material of said first type comprises an N-type semiconductor material and said semiconductor material of said second second type comprises a P-type semiconductor material.
6. For use in apparatus including means for forming and projecting a beam of light along an optical axis, a device for producing a plurality of electrical signals representative of colors within such a light beam comprising: a. a semiconductor member positioned along the axis so that the light beam will impinge thereon, said semiconductor member defining an array of semiconductor elements for producing such a plurality of electrical signals, said semiconductor member comprising a layer of semiconductor material of a first type having opposed first and second surfaces, a layer of semiconductor material of a second type having opposed first and second surfaces, and a layer of insulating material having opposed first and second surfaces, said layer of insulating material being interposed between said semiconductor material of said first type and said semiconductor material of said second type such that said first surface of said insulating material is in contact with said second surface of said semiconductor material of said first type and said second surface of said insulating material is in contact with said first surface of said semiconductor material of said second type, said semiconductor member further including means for dividing said layer of said semiconductor material of said second type and said layer of sAid insulating material into a plurality of like portions such that said portions of said semiconductor material of said second type and said insulating material are electrically isolated from the other of said portions wherein each of said electrically isolated portions in cooperation with said semiconductor material of said first type forms a particular one of said semiconductor elements defining said array; b. electrical means for rendering each of said semiconductor elements responsive to light such that each of said elements produces an electrical output signal having a parameter thereof related to the intensity of light incident on that particular semiconductor element; and c. means positioned relative to said semiconductor member for restricting the light impinging on each of said semiconductor elements from the beam to light of a particular color, different for each element, whereby a plurality of electrical signals are produced, each of said signals having a parameter related to the amount of a particular color within the light beam.
7. A device as defined in claim 6 wherein said light restricting means includes lens means positioned along the optical axis for causing the light beam to diverge and a polychromatic filter spaced relative to said lens means to receive at least a portion of such a beam and to transmit said portion thereof in the form of a plurality of monochromatic beams of light.
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