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US 2015/0177831 A1Published application
Integrated bi-sensing optical structure for head mounted display
AssigneeHong Kong Applied Science and Technology Research Institute Company Limited
InventorsKin Lung Chan, Weiping Tang
Life of this patent
Estimating the term…
Abstract
A bi-sensing optical system capable of transmitting signals for eye and object tracking and/or detection, and/or capable of transmitting signals comprising visible light to an eye of a user and non-visible light for eye tracking and object detection and/or tracking is disclosed herein.
Claims20
An apparatus comprising:
- an integrated optical system for infrared (IR) and visible light comprising:
- a visible light source;
- a first beam splitter to combine visible light from the visible light source and IR light from an IR light source on a single transmission path;
- a second beam splitter to (a) divert the visible light and a first portion of the IR light in a first direction to an eye of a user, and (b) divert a second portion of the IR light in a second direction different from the first direction for object detection;
- and
- an IR sensor capable of sensing (a) a reflection of the first portion of the IR light from the eye, and (b) a reflection of the second portion of the IR light from the object.
3 more elements
A method comprising:
- directing light of a first and a second wavelength range via at least a first beam splitter to an eye of a user, wherein the light of the first wavelength range comprises visible light and the light of the second wavelength range comprises IR light;
- directing light of a third wavelength range via the at least the first beam splitter for object detection and/or tracking, wherein the light of the third wavelength range comprises IR light;
- combining light of the first, the second, and the third wavelength ranges for transmission along an axis of a light transmission path;
- receiving, at a light sensor, light reflected from the object and the eye of the user;
- detecting an object based at least in part on the received light;
- and
- using a detection pattern from the light of the third wavelength range to enable an interaction with an interactive element in the light of the first wavelength range.
4 more elements
A device comprising:
- an integrated optical system for directing visible light from a visible light source and IR light from an IR light source, the integrated optical system comprising:
- an optical part comprising at least one surface having a coating, wherein the visible light and the IR light propagate along at least a portion of a length of the optical part;
- one or more beam splitters capable of receiving the visible light and the IR light propagating along a common transmission path, splitting the IR light into a first part and a second part, directing both the first part and the visible light to an eye of a user, and directing the second part for object detection and/or tracking;
- and
- a sensor capable of capturing the IR light reflected back from an object or the eye.
2 more elements
Dependencies are inferred from the claim text.