Head Mounted Display Apparatus Size Reduction via Extraction
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Solution Overview
Problem
Conventional head-mounted display apparatuses are limited in size reduction due to the need for optical elements to deflect light for image capturing, which increases the overall size and hardware cost.
Innovation Solution
The image capturing device is positioned adjacent to the display with its camera lens directly oriented towards the target region, eliminating the need for optical elements in the tube, thereby reducing the length and size of the apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an optical element is disposed in a tube to deflect light for image capturing, then the eyeball position can be detected, but the overall size of the head mounted display apparatus cannot be reduced
Solution Approach 1:
The patent extracts and removes the optical element from the tube structure. By positioning the image capturing device adjacent to the display with its lens directly facing the target region, the optical element that was previously required inside the tube is eliminated, thereby reducing the tube length and overall apparatus size while maintaining eyeball detection capability
Solution Approach 2:
The patent changes the spatial arrangement by moving the image capturing device from a position requiring light deflection through the tube to a position adjacent to the display. This dimensional repositioning allows direct line-of-sight capture of the eyeball image, eliminating the need for optical elements within the tube and reducing the apparatus volume
2Measurement precision
If an optical element is disposed in a tube to deflect light, then the image capturing device can capture the eyeball image, but the number of optical elements and hardware cost increase
Solution Approach 1:
The patent extracts the optical element from the system by repositioning the image capturing device to a location where it can directly capture the eyeball image without requiring light deflection. This eliminates the optical element entirely, reducing both the number of components and hardware cost while maintaining measurement precision
Solution Approach 2:
The repositioned image capturing device performs the dual function of capturing display images and detecting eyeball position directly, eliminating the need for separate optical elements. This multi-functional approach reduces device complexity while maintaining the required measurement capabilities
Data Source
AI summary
A head mounted display apparatus is provided, including a display, at least one image capturing device and an imaging device. The display provides a display image and projects the display image to a target region. The image capturing device is disposed adjacent to the display, and a camera lens of the image capturing device is oriented toward the target region. The imaging device is disposed between the target region and the display.