×

System for disabling oximeter in presence of ambient light

  • US 5,282,466 A
  • Filed: 10/03/1991
  • Issued: 02/01/1994
  • Est. Priority Date: 10/03/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A device for measuring a feature of a sample, including a radiation source, a detector for receiving transmitted radiation, means for carrying radiation from the source to the sample, first means for transmitting radiation from the sample to the detector, means for providing output based on the received radiation, and further comprising:

  • second means located adjacent the sample for transmitting radiation;

    means for isolating the second transmitting means from radiation from the sample; and

    means connected to receive radiation from the second transmitting means for disabling the output of the device in response to radiation received from the second transmitting means.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×