Head-Worn Prism Layout for Wider View With Lower Weight
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Solution Overview
Problem
Conventional head-wearable cameras with cubic prisms require larger sizes to expand the field of view, leading to increased weight and burden on the wearer.
Innovation Solution
A head-wearable visual recognition apparatus featuring horizontally-long prisms that widen the field of view in the horizontal direction while minimizing vertical size and weight, using integrated right-angled prisms with oblique surfaces to refract light and accommodate imaging means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the size of the prism is increased to expand the field of view, then the field of view is widened, but the weight of the prism increases and the burden on the wearer increases
Solution Approach 1:
The patent applies asymmetry by changing the prism shape from a cubic form to a horizontally-elongated cuboid shape. This asymmetric dimensional adjustment allows the prism to achieve a wider horizontal field of view while reducing the vertical dimension, thereby decreasing the overall weight and burden on the wearer while maintaining the required field of view coverage.
2Area of stationary object
If the vertical size of the prism is increased to expand the field of view, then the field of view is widened, but the weight of the prism increases
Solution Approach 1:
The patent applies dimensionality change by shifting the field of view expansion from the vertical dimension to the horizontal dimension. The prism is designed with a horizontally-elongated cuboid shape, where the horizontal length is increased to widen the field of view, while the vertical size is reduced. This dimensional reallocation achieves the desired field of view expansion without increasing the weight, as the vertical dimension contributes less to the overall mass in this configuration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus enhances user comfort and workability by expanding the horizontal field of view and reducing weight, allowing prolonged use without excessive burden.
Implementation Method 1
a prism in a horizontally-long cuboid shape through which the wearer's line of sight passes forward and which refracts an optical axis of the imaging means forward
Implementation Method 2
the prism is formed of the right-angled prism having the oblique surface inclined downward to the front, the transmission and reflection means on the oblique surface divides the light incident from the front into the transmitted light and the reflected light reflected upward
Data Source
AI summary
The present invention proposes a head-wearable visual recognition apparatus capable of widening a wearer's field of view. The head-wearable visual recognition apparatus includes: a pair of line-of-sight passing units attached to a head belt worn on the wearer's head; and a camera disposed adjacent to the one line-of-sight passing unit. The one line-of-sight passing unit includes a prism in a horizontally-long cuboid shape, through which the wearer's line of sight passes forward, and which refracts an optical axis of the camera to the front. The other line-of-sight passing unit includes a prism in a horizontally-long cuboid shape, through which the wearer's line of sight passes forward. According to such a configuration, it is possible to widen a field of view in a horizontal direction of each of the line-of-sight passing units through the prism and to improve workability of the wearer.