Browse Prior Art Database

Optical Data Input Device

IP.com Disclosure Number: IPCOM000090249D
Original Publication Date: 1969-Mar-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Baumann, DD: AUTHOR [+4]

Abstract

Rectangular matrix or photodetecting area 7 is defined by horizontal boundaries 10 and 11 and vertical boundaries 8 and 9. Along boundary 9 are light pipes 5 which are in optical alignment with similar light pipes 5 along boundary 8. Similarly, boundary 10 has a plurality of light pipes 5 which are optically aligned with light pipes along boundary 11. The other ends of these light pipes 5 form a circle. Light pipe 3 rotates on an assembly 1 with one end in alignment with this circle and the other end connected to light source 2. Thus, light from light pipe 3 is transmitted in a circular manner through the light pipes 5 so that light serially emanates from the light pipes in one boundaries 8, 10, 9, 11, etc.

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Optical Data Input Device

Rectangular matrix or photodetecting area 7 is defined by horizontal boundaries 10 and 11 and vertical boundaries 8 and 9. Along boundary 9 are light pipes 5 which are in optical alignment with similar light pipes 5 along boundary 8. Similarly, boundary 10 has a plurality of light pipes 5 which are optically aligned with light pipes along boundary 11. The other ends of these light pipes 5 form a circle. Light pipe 3 rotates on an assembly 1 with one end in alignment with this circle and the other end connected to light source 2. Thus, light from light pipe 3 is transmitted in a circular manner through the light pipes 5 so that light serially emanates from the light pipes in one boundaries 8, 10, 9, 11, etc. When light comes from a light pipe on one vertical boundary, it is received by a corresponding light pipe on the other vertical boundary. Likewise, when light is passed through a light pipe having one end along one horizontal boundary, it is received by another light pipe along the other horizontal boundary. Semicircular light pipe 4 has one end in optical alignment with photodetector 6. Light pipe 4 is also mounted on rotating assembly 1 and this one end of the light pipe 4 is coaxial with assembly 1 as is detector 6. The other end of the light pipe 4 scans, mounted diametrically opposite pipe 3, the circle described by light pipes 5.

Thus, light is transmitted from source 2 through pipe 3 and one of light pipes
5. It is received by...