Blind-Area Optical Member Layout to Reduce Visual Attraction
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Solution Overview
Problem
Existing blind area assisting devices suffer from reduced visibility due to vertical prisms and reflecting surfaces that create visual attraction, hindering scene recognition and increasing moire effects, and they often include costly semi-transmissive mirrors.
Innovation Solution
An optical member with a light guide body featuring reflecting surfaces and prisms arranged at specific intervals in intersecting directions, eliminating the need for semi-transmissive mirrors, and incorporating light shielding layers to reduce visual attraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional blind area assisting devices use semi-transmissive mirrors and prisms, then they can guide light from blind areas, but they create visual attraction issues due to striped patterns that hinder scene recognition
Solution Approach 1:
The patent transitions from a one-dimensional linear arrangement of prisms to a two-dimensional grid arrangement where prisms are positioned at intersections of reflecting surfaces in multiple directions. This dimensional change eliminates the striped pattern effect while maintaining light guidance functionality.
Solution Approach 2:
The patent employs asymmetric arrangement of reflecting surfaces and prisms in multiple directions rather than uniform linear alignment. The reflecting surfaces are arranged at different orientations (first direction and second direction intersecting at non-90 degree angles), creating an asymmetric pattern that reduces visual attraction.
2Reliability
If conventional devices use semi-transmissive mirrors and multiple prisms, then they can assist blind area vision, but the component count increases leading to higher costs
Solution Approach 1:
The patent merges the functions of semi-transmissive mirrors and multiple prisms into a single integrated optical member. The light guide body with reflecting surfaces and prisms combines light reflection, light guidance, and light emission functions that were previously distributed across separate components.
Solution Approach 2:
The optical member serves multiple functions simultaneously: it reflects light from blind areas, guides the light through the light guide body, and emits the light to the viewer. This multi-functional design replaces several specialized components with a single versatile optical member.
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
Enhances visibility in blind areas by minimizing visual attraction and maintaining consistent light guidance, ensuring scene recognition without the need for costly semi-transmissive mirrors.
Implementation Method 1
multiple reflecting surfaces that reflect light incident on an incident surface
Implementation Method 2
multiple prisms that emit light incident on an incident surface and light reflected by the reflecting surfaces to outside the light guide body
Data Source
AI summary
An optical member includes a light guide body that includes an incident surface on which a light from a blind area is incident, multiple reflecting surfaces configured to reflect the light from the incident surface, a smooth surface configured to reflect the light reflected by the reflecting surfaces, and multiple prisms protruding from the reflecting surfaces in a normal direction of the reflecting surfaces and configured to emit the light from the incident surface and the light reflected by the smooth surface to an outside of the light guide body. The prisms are arranged at intervals in a first direction intersecting the normal direction and are arranged at intervals in a second direction intersecting the normal direction and the second direction. Each of the reflecting surfaces is positioned between the adjacent prisms such that reflecting surfaces are arranged at intervals in the first direction and the second direction.