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US 11,080,874 B1Granted
Apparatuses, systems, and methods for high-sensitivity active illumination imaging
AssigneeFacebook Technologies, LLC
InventorAndrew Matthew Bardagjy
Life of this patent
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Abstract
A disclosed imaging device may include an image sensor, a lens system, and an aperture filter. The aperture filter may include a first concentric region that passes light of a first wavelength range and that blocks light of a second wavelength range and a second concentric region that passes light of the first wavelength range and light of the second wavelength range. The lens system may direct received light through the aperture filter toward the image sensor. The lens system and the aperture filter may provide a first depth-of-field associated with the first wavelength range and a second depth-of-field associated with the second wavelength range. Associated systems and methods are also disclosed.
Claims20
An imaging device comprising:
- an image sensor;
- an aperture filter having a plurality of concentric regions including:
- a first concentric region that passes light of a first wavelength range and a second wavelength range, the first concentric region having a first diameter;
- a second concentric region encompassed by the first concentric region, the second concentric region at least partially blocking light of the second wavelength range, the second concentric region having a second diameter;
- and
- a third concentric region opaque to light of the first wavelength range and the second wavelength range, the third concentric region having a third diameter;
- and
- a lens system that directs received light through the aperture filter toward the image sensor, wherein:
- the third diameter is greater than the first diameter;
- the first diameter is greater than the second diameter;
- at least a portion of the received light that passes through the second concentric region subsequently passes through the first concentric region when directed towards the image sensor;
- and
- the lens system and the aperture filter provide a first depth-of-field associated with the first wavelength range and a second depth-of-field associated with the second wavelength range.
10 more elements
A system comprising:
- a head-mounted display;
- and
- an imaging device that comprises:
- an image sensor;
- an aperture filter having a plurality of concentric regions including:
- a first concentric region that passes light of a first wavelength range and a second wavelength range, the first concentric region having a first diameter;
- a second concentric region encompassed by the first concentric region, the second concentric region at least partially blocking light of the second wavelength range, the second concentric region having a second diameter;
- and
- a third concentric region opaque to light of the first wavelength range and the second wavelength range, the third concentric region having a third diameter;
- and
- a lens system that directs received light through the aperture filter toward the image sensor, wherein:
- the third diameter is greater than the first diameter;
- the first diameter is greater than the second diameter;
- at least a portion of the received light that passes through the second concentric region subsequently passes through the first concentric region when directed towards the image sensor;
- and
- the lens system and the aperture filter provide a first depth-of-field associated with the first wavelength range and a second depth-of-field associated with the second wavelength range.
13 more elements
A method comprising:
- receiving light at an image sensor and through a lens system and an aperture filter, wherein:
- the aperture filter has a plurality of concentric regions including:
- a first concentric region that passes light of a first wavelength range and a second wavelength range, the first concentric region having a first diameter;
- a second concentric region encompassed by the first concentric region, the second concentric region at least partially blocking light of the second wavelength range to generate electronic signals associated with the first and second wavelength ranges, the second concentric region having a second diameter;
- and
- a third concentric region opaque to light of the first wavelength range and the second wavelength range, the third concentric region having a third diameter;
- and
- the lens system directs received light through the aperture filter toward the image sensor, wherein:
- the third diameter is greater than the first diameter;
- the first diameter is greater than the second diameter;
- at least a portion of the received light that passes through the second concentric region subsequently passes through the first concentric region when directed towards the image sensor;
- and
- the received light is directed such that the lens system and the aperture filter provide a first depth-of-field associated with the first wavelength range and a second depth-of-field associated with the second wavelength range;
- processing the electronic signals associated with the first wavelength range according to a first computer-vision scheme;
- and
- processing the electronic signals associated with the second wavelength range according to a second computer-vision scheme.
13 more elements
Dependencies are inferred from the claim text.