OPTICAL SENSOR FOR MEDICAL DEVICE
First Claim
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1. A medical device comprising:
- a housing; and
an optical sensor connected to the housing and comprising;
an emit module; and
a receive module offset laterally from the emit module,wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, andwherein a size of the lens of the emit module is less than a size of the lens of the receive module.
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Abstract
An optical sensor for a medical device includes a fixed lens spacing between emit and receive modules to achieve target sensor sensitivity, while varying other sensor parameters in order to increase signal amplitude without increasing power demand. The size of at least one of emit and receive module lenses of an optical sensor, and the offset between the opto-electronic component and the respective lens of at least one of emit and receive modules is decreased to increase amplitude of the signal received by the receive module from the emit module.
37 Citations
35 Claims
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1. A medical device comprising:
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a housing; and an optical sensor connected to the housing and comprising; an emit module; and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, and wherein a size of the lens of the emit module is less than a size of the lens of the receive module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An optical sensor connected to a housing of an medical device, the sensor comprising:
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an emit module; and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, and wherein a size of the lens of the emit module is less than a size of the lens of the receive module. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. An optical sensor connected to a housing of an medical device, the sensor comprising:
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an emit module; and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component, and wherein a size of the lens of at least one of the emit module or the receive module is in a range from greater than in a range from approximately 5 to approximately 10 times an area of light emitted by the opto-electronic component arranged within the at least one of the emit module or the receive module cavity to less than approximately 6 millimeters (0.24 inches).
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35. A method of constructing an optical sensor connected to a housing of a medical device, the method comprising:
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providing an emit module and a receive module offset laterally from the emit module, wherein each of the emit and receive modules comprises a cavity within which an opto-electronic component is arranged and a lens generally defining one end of the cavity offset from the opto-electronic component; and selecting a size of the lens of the emit module to be less than a size of the lens of the receive module.
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Specification