Coaxial LED light sources
First Claim
Patent Images
1. An emitter assembly comprising:
- a first LED coupled to a first substrate having an opening therein, the first LED being generally positioned across the opening; and
a second LED coupled to a second substrate and generally disposed to emit light into the opening and generally toward the first LED, the first LED being generally transparent to the light emitted from the second LED, wherein the opening is disposed between the first LED and the second LED.
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Abstract
An emitter device may include at least two emitters, such as LEDs. The coaxially disposed emitters may emit light in substantially the same area so that no apparent distance is perceived between individual emitters, as in emitter devices in which the emitters are disposed adjacent one another. The coaxially disposed emitters may include emitters suitable for pulse oximetry and/or water fraction measurements, for example.
931 Citations
20 Claims
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1. An emitter assembly comprising:
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a first LED coupled to a first substrate having an opening therein, the first LED being generally positioned across the opening; and a second LED coupled to a second substrate and generally disposed to emit light into the opening and generally toward the first LED, the first LED being generally transparent to the light emitted from the second LED, wherein the opening is disposed between the first LED and the second LED. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sensor assembly comprising:
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a housing; an emitter disposed generally within the housing, the emitter comprising a first LED coupled to a first substrate comprising an opening therein, the first LED being generally positioned on a first side of the opening and across the opening, and the emitter further comprising a second LED coupled to a second substrate and generally disposed on a second side of the opening opposite the first side and configured to emit light into the opening and generally toward the first LED, the first LED being generally transparent to the light emitted from the second LED, the first and second LEDs being configured to emit light generally into a tissue site; and a detector disposed generally within the housing and being configured to detect light from the first and second LEDs which has passed through the tissue site. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification