Dual function readhead for a reflectance instrument
First Claim
1. A dual function readhead for a reflectance instrument, comprising:
- an instrument housing;
a readhead (10) in said instrument housing;
a first light source (14) in said readhead for emitting radiation for reflectance readings and transmitting data representative of said reflectance readings;
a first photodetector (20) in said readhead;
an interface (12), said interface including a second photodetector (28) for detecting said data transmitted by said first light source; and
means (22) for decoding data received by said second photodetector.
1 Assignment
0 Petitions
Accused Products
Abstract
A dual function readhead for a reflectance instrument is located in a housing for the instrument. A first light source for emitting radiation for reflectance readings and transmitting data is mounted in the readhead. In addition, a first photodetector is mounted in the readhead for detecting or receiving reflectance readings. A format or interface access port is defined in the readhead. An interface is provided that includes a second photodetector for detecting data transmitted by the first light source. A microprocessor is also provided for decoding data received by the second photodetector. A second light source may also be included with the interface for transmitting commands or data to the first photodetector. Software for controlling the operation of the first light source and the first photodetector is also provided.
101 Citations
10 Claims
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1. A dual function readhead for a reflectance instrument, comprising:
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an instrument housing; a readhead (10) in said instrument housing; a first light source (14) in said readhead for emitting radiation for reflectance readings and transmitting data representative of said reflectance readings; a first photodetector (20) in said readhead; an interface (12), said interface including a second photodetector (28) for detecting said data transmitted by said first light source; and means (22) for decoding data received by said second photodetector. - View Dependent Claims (2, 3, 4, 5)
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6. A bidirectional readhead for a reflectance instrument, comprising:
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an instrument housing; a first light source (102) in said housing for emitting radiation for reflectance readings and transmitting data representative of said reflectance readings; a first photodetector (118) in said housing; a format aperture (106) in said housing, said first light source and said first photodetector being substantially adjacent said format aperture; and a format (126), said format including a second light source (136) and a second photodetector (134). - View Dependent Claims (7, 8, 9, 10)
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Specification