Device for detecting position and intensity of light and position detecting element to be employed therein
US5324929A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Feb 25, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/547
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting direction, height and intensity of a light which facilitates detection and provides high accuracy. The device includes a glass substrate, on which a resistant layer for detecting the X coordinate position, a photoconductive layer utilizing the photoconducting effect of a photoelectric converting layer, and a resistant layer of metallic electrode resistor body for detecting the Y coordinate position, laminated in order. The resistant layers are provided respective two lead electrodes X, X' and Y, Y'. By applying 5V and 0V, for example, to X and X', a voltage Vx corresponding to the position where the light is irradiated can be directly obtained through Y or Y'. Namely, the X coordinate position of the point where the light passes can be easily and accurately detected. By applying +5V and 0V for Y and Y', Y coordinate of the light irradiated point can be obtained, and by applying the same potential to X and X', light intensity can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.