Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-08-30
1991-04-16
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023119, 341 31, G01D 534
Patent
active
050085344
ABSTRACT:
A contactless switch comprising a moveable body assembly including a plunger and a lens carrier received in a casing axially slidable manner between a light emitting element and a light receiving element which are also disposed along and on the axial line of the casing. Thus, the radial dimension of the switch can be reduced, and a compact design is made possible. Additionally, the actuating stroke of the moveable body assembly can be made large without increasing the dimensions of the switch. In particular, since a switch output can be produced from a signal processing circuit when the amount of the light received by the light receiving element has reached a certain predetermined level, the point of activation of the switch can be accurately defined by adjusting a reference level for the level of the light received by the light receiving element, and this adjustment can be easily carried out.
REFERENCES:
patent: 3993900 (1976-11-01), Hulme
patent: 4607161 (1986-08-01), Anderson et al.
patent: 4868384 (1989-09-01), Franken et al.
Nozoe Satosi
Yonezawa Tatsushi
Nelms David C.
Omron Tateisi Electronics Co.
Shami Khaled
LandOfFree
Contactless switch having translating focusing/defocusing lens does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contactless switch having translating focusing/defocusing lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contactless switch having translating focusing/defocusing lens will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-422911