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US 10,209,348 B2Granted
Optical apparatus
AssigneeEverready Precision Ind. Corp.
InventorsJyh-Long Chern, Chih-Ming Yen
Life of this patent
Estimating the term…
Abstract
An optical apparatus includes a photosensitive diode unit, a lens and a microstructure unit. The microstructure unit is arranged between the photosensitive diode unit and the lens. After plural light beams passing through the lens are received by the microstructure unit, travelling directions of the plural light beams are changed. Consequently, at least a portion of the plural light beams is guided to the photosensitive diode unit. In such way, the light collecting efficacy of the photosensitive diode unit is enhanced.
Claims18
An optical apparatus, comprising:
- a photosensitive diode unit;
- a lens, wherein a microstructure unit corresponding to the photosensitive diode unit is formed on the lens;
- and
- a light source providing plural first light beams and plural second light beams, wherein after the plural first light beams pass through the lens, the plural first light beams are transmitted to an object and reflected by the object, wherein the plural second light beams are directly transmitted to the photosensitive diode unit without passing through the lens,
- wherein after the plural first light beams reflected by the object pass through the lens, the plural first light beams are received by the microstructure unit and travelling directions of the plural first light beams are changed, so that at least a portion of the plural first light beams is guided to the photosensitive diode unit, and
- wherein a distance of the object from the optical apparatus is acquired according to a time difference between a time point of receiving the plural first light beams by the photosensitive diode unit and a time point of receiving the plural second light beams by the photosensitive diode unit.
3 more elements
An optical apparatus, comprising:
- a photosensitive diode unit;
- a lens;
- and
- a microstructure unit formed on the photosensitive diode unit and arranged between the photosensitive diode unit and the lens,
- wherein after plural first light beams passing through the lens are received by the microstructure unit, travelling directions of the plural first light beams are changed, so that at least a portion of the plural first light beams is guided to the photosensitive diode unit.
2 more elements
Dependencies are inferred from the claim text.