Light Guidance Unit for HMD Sensor Angle of View

A light guidance unit is introduced as an intermediary component between the sensor and the external environment. This unit includes optical elements such as lenses or mirrors that redirect light from a wider field of view onto the sensor, effectively expanding the sensor's angle of view without modifying the sensor itself. The light guidance unit acts as a mediator that transforms the narrow-angle light paths into wide-angle coverage while maintaining the sensor's original detection capabilities.

The solution changes the spatial dimension of light collection by using optical elements positioned at angles relative to the sensor. Instead of the sensor directly facing the scene, the light guidance unit captures light from oblique directions and redirects it onto the sensor plane. This dimensional transformation allows the sensor to detect objects in regions that would otherwise be outside its direct field of view, effectively expanding coverage without adding more sensors.

The light guidance unit serves as a mediator that bridges the gap between the user's natural hand movements and the sensor's limited field of view. By optically extending the sensor's coverage area, the system allows users to perform gestures within a more natural and comfortable range, eliminating the need to consciously position hands within a restricted detection zone.

The system performs self-adjustment by using the light guidance unit to automatically expand the detection coverage. Instead of requiring the user to adapt to the sensor's limitations, the optical elements passively redirect light to ensure that the sensor can detect hands across a broader area, making the detection system serve the user's natural behavior rather than requiring the user to serve the system's constraints.

The existing distance measurement sensor, originally designed for autofocus, is made multi-functional by combining it with the light guidance unit. This configuration allows the same sensor to perform both its primary autofocus function and secondary gesture detection function with expanded coverage. The light guidance unit enables the sensor to serve multiple purposes without requiring additional detection hardware, achieving versatility through functional expansion rather than component multiplication.

The light guidance unit acts as an intermediary that enables the existing sensor to achieve expanded detection coverage without adding new sensors. By positioning optical elements between the environment and the sensor, the system effectively multiplies the sensor's functional reach, allowing it to detect gestures across a broader area while maintaining the simplicity of using a single sensor component.