Laser to fiber optical coupling in photoplethysmography
First Claim
Patent Images
1. A photoplethysmographic device including an optics module, the optics module comprising:
- a. a substrate having one or more pairs of mechanical mounts, each of the pairs of mechanical mounts comprised of a first mechanical mount and a second mechanical mount located in close proximity to the first mechanical mount;
b. a light source affixed to the first mechanical mount;
c. the second mechanical mount having an open slot formed therein designed to allow a light guide to be movably positioned in all translational and rotational axes within the open slot;
d. the light guide affixed within the open slot in a position to substantially maximally couple light emitted by the light source into the light guide.
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Abstract
An embodiment of a laser to fiber coupling apparatus having a substrate 110 that supports a laser mount 120, to which is affixed a submount 130 and laser die 140, and an open slot mount 150, in which a light guide 160 is affixed with an adhesive 170, such that the light from the laser 140 is coupled into the light guide 160. The open slot arrangement permits the light guide to be moved in all six translational and rotational degrees of freedom to maximally couple the light from the laser to the light guide. Other embodiments are described and shown.
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Citations
18 Claims
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1. A photoplethysmographic device including an optics module, the optics module comprising:
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a. a substrate having one or more pairs of mechanical mounts, each of the pairs of mechanical mounts comprised of a first mechanical mount and a second mechanical mount located in close proximity to the first mechanical mount; b. a light source affixed to the first mechanical mount; c. the second mechanical mount having an open slot formed therein designed to allow a light guide to be movably positioned in all translational and rotational axes within the open slot; d. the light guide affixed within the open slot in a position to substantially maximally couple light emitted by the light source into the light guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A photoplethysmographic device including an optics module, the optics module comprising:
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a. a substrate including a first mechanical mount and a second mechanical mount; b. a laser light source affixed to the first mechanical mount; c. the second mechanical mount including an open slot designed to allow a light guide to be movably positioned in all translational and rotational axes within the open slot; d. the light guide affixed with an adhesive within the open slot in a position that substantially maximally couples light emitted by the laser light source into the light guide.
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10. A method for manufacturing an optics module in a photoplethysmographic measurement system comprising the steps of:
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a. providing a substrate containing a plurality of one or more pairs of mechanical mounts; b. providing a light source for each of the pairs of mechanical mounts; c. providing a light guide for each of the pairs of mechanical mounts; d. providing a first mechanical mount in each of the pairs of mechanical mounts; e. affixing the first mechanical mount on the substrate; f. affixing the light source to the first mechanical mount; g. providing a second mechanical mount in each of the pairs of mechanical mounts; h. affixing the second mechanical mount on the substrate in proximity to the first mechanical mount; i. providing an open slot in the second mechanical mount; j. aligning the light guide in the open slot to substantially maximally couple light, emitted by the light source held in the first mechanical mount, into the light guide; k. affixing the light guide into position in the open slot. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification