1. A user input device for use with a computing device, the user input device comprising:
a housing with a bottom portion including a substrate that includes a transparent portion; and
an optical tracking engine mounted in the housing proximate the substrate and being configured to transmit andor detect light for tracking movement of the user input device through the transparent portion of the substrate.
2. The user input device of claim 1, wherein the optical tracking engine includes a light source configured to transmit light through the transparent portion of the substrate.
3. The user input device of claim 2, wherein the optical tracking engine includes an optical sensor configured to detect light passing into the housing through the transparent portion of the substrate.
4. The user input device of claim 2, wherein the transparent portion of the substrate is transparent to the light emitted from the light source.
5. The user input device of claim 4, wherein the light source is configured to emit visible light and the transparent portion is transparent to visible light.
6. The user input device of claim 4, wherein the light source is configured to emit non-visible light and the transparent portion is transparent to non-visible light, but opaque to visible light.
7. The user input device of claim 6, wherein the substrate and transparent portion are formed to extend across the entire bottom portion of the housing, such that the entire bottom portion of the housing is transparent to non-visible light emitted by the optical tracking engine, but opaque to visible light.
8. The user input device of claim 1, wherein the substrate further includes a display.
9. The user input device of claim 7, wherein the display includes a diffuser, the diffuser not overlapping with the transparent portion of the substrate.
10. The user input device of claim 1, wherein the substrate is curved in one dimension or two dimensions.
11. The user input device of claim 1, further comprising a controller configured to switch between an on-desktop mode of operation and an off-desktop mode of operation.
12. The user input device of claim 11, further comprising a user-actuatable switch configured to cause the controller to transition between the on-desktop mode and off-desktop mode.
13. The user input device of claim 11, further comprising an orientation sensor switch configured to detect whether the optical tracking engine is facing upwards or downwards, and in response cause the controller to transition between the on-desktop mode and off-desktop mode.
14. The user input device of claim 1, wherein the substrate is located outside a depth of field of an operating range of the optical tracking engine.
15. The user input device of claim 1, wherein the substrate is configured as a touch sensitive input device, and includes a touch sensitive layer formed of capacitive, resistive, or optical sensing material.
16. The user input device of claim 15, wherein the substrate is divided into a plurality of regions, an input function being assigned to each region.
17. The user input device of claim 1, wherein the housing is formed in the shape of a mouse, remote control, or game controller.
18. The user input device of claim 1, wherein the substrate and the optical tracking engine vertically overlap each other when the optical engine faces in an upward or downward orientation.
19. A user input device for use with a computing device, the user input device comprising:
a housing with a bottom portion including a substrate that includes a transparent portion, the substrate being configured as a touch sensitive input device; and
an optical tracking engine mounted in the housing proximate the substrate and being configured to transmit andor detect light for tracking movement of the user input device through the transparent portion of the substrate;
wherein the optical tracking engine includes a light source configured to transmit light through the transparent portion of the substrate, and an optical sensor configured to detect light passing into the housing through the transparent portion of the substrate; and
wherein the transparent portion of the substrate is transparent to the light emitted from the light source.
20. A user input device for use with a computing device, the user input device comprising:
a housing with a bottom portion including a substrate that includes a transparent portion, the substrate including a touch sensitive layer and a display, wherein the transparent portion does not overlap with the display; and
an optical tracking engine mounted in the housing proximate the substrate and being configured to transmit andor detect light for tracking movement of the user input device through the transparent portion of the substrate; and
wherein the optical tracking engine includes a light source configured to transmit light through the transparent portion of the substrate, and an optical sensor configured to detect light passing into the housing through the transparent portion of the substrate; and
wherein the transparent portion of the substrate is transparent to the light emitted from the light source.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A composition comprising a solid solution wherein the solid solution comprises one or more carotenoid(s) and one or more solubility-enhancing polymer(s) wherein said carotenoid is substantially amorphous and exhibits enhanced bioavailability compared to a control composition without the solubility-enhancing polymer, and wherein the polymer is selected from the group consisting of polyvinylpyrrolidone, hydroxypropylcellulose, hydroxypropylmethylcellulose, hydroxypropylmethylcellulose acetate succinate, hydroxypropylmethylcellulose phthalate and mixtures thereof.
2. The composition of claim 1 wherein said carotenoid is completely amorphous.
3. The composition of claim 1 wherein the ratio of carotenoid to solubility-enhancing polymer is between about 25% carotenoid: 75% polymer to about 75% carotenoid: 25% polymer.
4. The composition of claim 1 wherein the composition comprises spray dried particles of carotenoid and polymer.
5. The composition of claim 4 wherein the spray dried particles of carotenoid and polymer have an average particle size of from about 0.5 \u03bcm-500 \u03bcm.
6. The composition of claim 1 wherein the carotenoid comprises a provitamin A carotenoid.
7. The composition of claim 6 wherein the provitamin A carotenoid is selected from the group consisting of \u03b1-carotene, \u03b2-carotene, \u03b2-cryptoxanthin, and mixtures thereof.
8. The composition of claim 1 wherein the carotenoid comprises a non-provitamin A carotenoid.
9. The composition of claim 8 wherein the non-provitamin A carotenoid is selected from the group consisting of lycopene, lutein, zeaxanthin, and mixtures thereof.
10. A dosage form comprising the composition of claim 1.
11. The dosage form of claim 10 wherein the dosage form comprises an oral, solid-dosage form.
12. The dosage form of claim 11 wherein the dosage form provides at least one of:
a) a maximum plasma concentration for an active form of carotenoid that is at least 1.25 times greater than that of a control composition containing crystalline carotenoid;
b) an increase in the exposure (AUC0-24h) of at least 1.25 times that of a control composition containing crystalline carotenoid.