Number | Name | Date | Kind |
---|---|---|---|
4554449 | Taniuchi et al. | Nov 1985 | |
4563639 | Langeac | Jan 1986 | |
4698497 | Miller et al. | Oct 1987 | |
4843232 | Emo et al. | Jun 1989 | |
4947035 | Zook et al. | Aug 1990 | |
5051577 | Lutz et al. | Sep 1991 | |
5061847 | Hazan et al. | Oct 1991 |
Entry |
---|
Maurice et al., "Low Cost Binary Proximity Sensor for Automotive Applications"; SPIE vol. 1173 pp. 75-83 (1989). |
Nagao, "Light Applied Measuring Apparatus"; Published Japanese Patent Application No. 62-90547(A) (Apr., 1987). |
Tokumaru, "Light Application Measuring Instrument"; Published Japanese Patent Application No. 62-76474(A) (Apr., 1987). |