A passive eyeball positioning method and system based on light guide interaction layer eyeball closing reflected light path

Abstract

The application discloses a passive eyeball positioning method and system based on a closed light path of an eyeball of an optical guide interaction layer, and belongs to the field of optical non-contact interaction. The application adopts a light source that can be reflected by an eyeball and can be transmitted in the optical guide interaction layer, to form a closed light path of light-optical guide interaction layer-eyeball-optical guide interaction layer, and directly determine the gaze coordinates through the position of the reflected light, without a camera, image recognition and algorithm solving. The optical guide interaction layer covers a variety of forms such as a pasting film, a built-in screen glass, an integrated cover plate and an optical layer of a protective shell. The application is a pure passive structure, without a chip, a circuit, a power supply and an electrical connection, has advantages of zero delay, full environmental light self-adaptation, high anti-interference, full platform compatibility and the like, is suitable for mobile phones, vehicle-mounted terminals, foldable screens, industrial control terminals and the like, and realizes simple, low-cost and high-stable eyeball non-contact touch control.

Description

Technical Field

[0001] This invention relates to the fields of intelligent terminal optical interaction, contactless eye positioning, and passive optical sensing technology. Specifically, it is a purely optical solution that can achieve eye positioning by not being limited by a light source and only relying on the light guide interaction layer and the reflection of the eye to form a closed optical path. Background Technology

[0002] Existing eye-tracking relies on cameras, infrared illumination, image algorithms, and active light sources, which have drawbacks such as high power consumption, complex structure, ambient light interference, privacy risks, and the need for system permissions. There is no extremely simple positioning solution in the industry that is not limited by light sources and relies solely on light guide structures and eye reflection closed loops to achieve passive, algorithm-free, and sensor-free positioning. Summary of the Invention

[0003] This invention discloses a passive eye positioning method and system based on a closed reflection optical path of the eyeball in an optical guide interaction layer: light that can be reflected by the eyeball and transmitted within the optical guide interaction layer enters the optical guide interaction layer, is incident on the eyeball, and is reflected back to the optical guide interaction layer to form a closed positioning optical path; the coordinates are directly output by the reflected light at the position within the layer, without imaging, algorithms, electrical connections, or any other characteristics, and with zero delay.

[0004] The photoconductive interaction layer of the present invention comprises one or more of the following: an adhesive photoconductive film, an optical layer built into the screen glass, an optical layer integrated into the terminal cover, an optical layer of the protective shell, and an under-screen optical transmission layer. Technical solution

[0005] 1. Closed optical path Any applicable light source → enters the light guide interaction layer → enters the eyeball → is reflected back to the light guide interaction layer Forming a closed loop: Light → Optical guide interaction layer → Eyeball → Optical guide interaction layer 2. Positioning Principle Different gaze positions → reflected light falls into different areas → directly correspond to coordinates, no calculation required.

[0006] 3. Compatible with all light sources Ambient light, sunlight, indoor lighting, screen light, LED, infrared light, and under-screen / edge light sources are all covered.

[0007] 4. Naturally resistant to interference It only recognizes the loop light reflected from the eyeball and automatically blocks stray light. Beneficial effects

[0008] • Covers all carriers including screen protectors, built-in screen protectors, integrated cover plates, and protective cases. • Unrestricted by light source, anti-interference in all scenarios • Passive, zero latency, no algorithm, no permissions • Compatible with all platforms and easy to mass produce Detailed Implementation

[0009] Example 1: Adhesive photoconductor film Users attach a light guide film, and ambient light / screen light enters the eyeball through the film and is reflected back to the film for direct positioning, ensuring stability in all scenarios.

[0010] Example 2: Built-in screen glass The light guide structure is directly integrated inside the phone screen glass, eliminating the need for a screen protector. It supports eye-tracking from the factory and still falls within the protection range.

[0011] Example 3: Terminal Cover Integration The light guide interaction layer is placed on the device cover layer, without occupying the screen structure, and also achieves eye positioning through a closed light path.

[0012] Example 4: Protective shell optical layer The optical guide interaction layer is integrated into the inside of the phone case and can work simply by fitting it to the screen, without changing the optical path and positioning principle.

Claims

1. A passive eye positioning method and system based on the closed reflection optical path of the eyeball using an optical guide interaction layer, characterized in that: There exists light that can be reflected by the eyeball and transmitted within the optical guide interaction layer. After entering the optical guide interaction layer, it is incident on the eyeball and then reflected back from the eyeball to the optical guide interaction layer, forming a fixed closed light path: light → optical guide interaction layer → eyeball → optical guide interaction layer; The gaze coordinates are determined directly by the position or intensity distribution of reflected light within the optical guide interaction layer, eliminating the need for camera imaging, image recognition, algorithm calculation, and electrical connections.

2. The method according to claim 1, characterized in that, The light includes one or any combination of ambient light, sunlight, indoor lighting, moonlight, starlight, screen light, LED light source, infrared light source, ultraviolet light source, under-screen light source, and edge light source.

3. The method according to claim 1, characterized in that, The light guide interaction layer includes one or more of the following: an attached light guide film, an optical layer built into the screen glass, an optical layer integrated into the terminal cover, an optical layer of the protective shell, and an under-screen optical transmission layer.

4. The method according to claim 1, characterized in that the closed optical path automatically blocks external stray light and only identifies the loop light signal reflected by the eyeball.

5. The method according to claim 1, characterized in that the photoconductive interaction layer is a purely optical structure, without chips, circuits, or power supplies.

6. The method according to claim 1, characterized in that the gaze coordinates are directly corresponding to the position of the reflected light, without the need for calculation, mapping, or decoding.

7. The method according to claim 1 is characterized in that it can resist interference from sunlight, lamplight, shadow, angle, and diffused light, and is stable in all environments.

8. The method according to claim 1, characterized in that the capacitive screen is triggered purely physically by photoinduced micro-deformation, photothermal effect, and local electric field change.

9. The method according to claim 1 does not require requesting system permissions, accessing APIs, or reading terminal data throughout the entire process.

10. A positioning system based on the eyeball closure reflection optical path of an optical guide interaction layer, characterized in that, It includes: a pure optical light guide interaction layer, a reflection signal receiving module, a hardware coordinate output module, and a physical triggering module; the system achieves passive eye positioning through a closed reflection light path, without a camera, algorithm, or electrical connection.