Hybrid lens system for projectors
AssigneeAmazon Technologies, Inc.
InventorsWubin Pang, John Michael Cesaaratto, Anthony Botzas
Life of this patent
Estimating the term…
Abstract
A lens system includes an aperture stop, a first lens disposed on a first side of the aperture stop, a second lens disposed on the first side of the aperture stop, a third lens disposed on a second side of the aperture stop, and a fourth lens. The first lens is manufactured from glass. The second lens, the third lens, and the fourth lens are manufactured from thermoplastic. The fourth lens includes a first surface oriented towards the aperture stop and a second surface oriented away from the aperture stop. The first surface is refractive and diffractive to light passing through the lens system.
Claims20
A projector device comprising:
- a camera;
- a time of flight sensor;
- a light source;
- a digital light processor (DLP) including a digital micromirror device (DMD);
- a light coupling prism disposed adjacent to the DLP;
- a first lens disposed adjacent to the light coupling prism;
- a second lens disposed adjacent to the first lens;
- an aperture stop;
- a third lens disposed adjacent to a first side of the aperture stop, the third lens including:
- a first surface oriented towards the aperture stop, the first surface being both refractive and diffractive to light;
- and
- a second surface towards the second lens;
- a fourth lens disposed adjacent to a second side of the aperture stop, the fourth lens being manufactured from a first material;
- and
- a fifth lens disposed adjacent to the fourth lens, the fifth lens being manufactured from a second material that is different than the first material.
A projector device comprising:
- a camera;
- a light source;
- a digital micromirror device;
- and
- a lens system positioned and arranged to receive light from the light source via the digital micromirror device, the lens system including:
- an aperture stop,
- a first lens disposed on a first side of the aperture stop, the first lens being manufactured from glass,
- a second lens disposed on the first side of the aperture stop, the second lens being manufactured from thermoplastic,
- a third lens disposed on a second side of the aperture stop, the third lens being manufactured from thermoplastic, and
- a fourth lens being manufactured from thermoplastic, the fourth lens having:
- a first surface oriented towards the aperture stop, the first surface being refractive and diffractive to light passing through the lens system, and
- a second surface oriented away from the aperture stop.
A projector device comprising:
- a light source;
- a digital micromirror device;
- a lens system positioned and arranged to receive light from the light source via the digital micromirror device, the lens system including:
- an aperture stop,
- a first lens manufactured from a first material and being disposed on a first side of the aperture stop, and
- a second lens manufactured from a second material and being disposed on a second side of the aperture stop that is opposite the first side of the aperture stop, the second lens having:
- a first surface oriented towards the aperture stop, the first surface being both refractive and diffractive to light passing through the second lens, where features formed within the first surface contribute to light diffraction, and
- a second surface opposite the first surface.
Dependencies are inferred from the claim text.