Pinhole objective fibre optic light pen

Details Pinhole objective fibre optic light pen Pinhole objective fibre optic light pen

1982-07-22

1984-12-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340707, G09F 900

Patent

active

044906072

ABSTRACT:
A light pen is described wherein light information indicative of a selected position on a lighted display is propagated along a light conductive fibre cable to a processing circuit. The light pen includes a retractable sleeve wherein pressing the pen to the lighted display moves a pin-hole objective to its focal point on a light conductive fibre cable such that light entering through the pin-hole objective from the lighted display may be propagated along the light conductive fibre cable. Additionally, a magnet may be secured to the sleeve such that the magnet is brought into proximity to, and operates a magnet-actuated switch when the sleeve is retracted.

REFERENCES:
patent: 3749932 (1973-07-01), Jones
patent: 4107540 (1978-08-01), Hillman
patent: 4109146 (1978-08-01), Hillman

Affiliated with

Also associated with

Rating

Pinhole objective fibre optic light pen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pinhole objective fibre optic light pen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pinhole objective fibre optic light pen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1154395