Rotatable Rear-View Mirror With Dual Openings

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Solution Overview

Problem

Conventional rear-view mirrors with integrated display devices often suffer from double image issues due to the coexistence of display and mirror surfaces in a single opening, making it difficult to provide a reliable rear view, especially under varying light conditions.

Innovation Solution

A rotatable rear-view mirror design featuring a housing with two separate openings for a mirror device and a display device, allowing the driver to select between the two views based on driving conditions, with a mounting guide device and slot mechanism enabling the housing to rotate and adjust the view surfaces to prevent double images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a display device and a mirror are disposed in the same opening, then both rear view functions are integrated in one location, but double image occurs making it difficult to provide a reliable rear view

Engineering Contradiction:
Improveintegration of display and mirrorVSAvoidreliability of rear view
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The housing is divided into two separate openings: a first opening for the mirror device and a second opening for the display device. This segmentation prevents the double image issue by physically separating the optical paths of the mirror and display while maintaining both functions in the same mirror assembly location.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a rotatable housing with two openings is used, then double image is eliminated and reliable rear view is provided, but device complexity increases

Engineering Contradiction:
Improvereliability of rear viewVSAvoidstructure of housing
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The mirror device and display device are merged into a single integrated mirror assembly with a unified housing that contains both components in separate openings. This merging approach maintains both functions in one location without requiring separate mirror housings, reducing overall system complexity while eliminating double image.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If the housing is made rotatable to switch between mirror and display views, then adaptive selection based on driving conditions is enabled, but ease of operation decreases

Engineering Contradiction:
Improveadaptive selection of view modesVSAvoidoperation of mirror
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The housing is designed with rotatability to dynamically switch between displaying the mirror view and display view. The slot-guide device and stopper mechanism enable smooth rotational movement with defined positioning, allowing the system to adapt to different driving conditions (daytime vs. nighttime) while maintaining ease of operation through mechanical guidance.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS10821899B2Rotatable rear-view mirror with display
Publication Date: 2020.11.03 HYUNDAI MOTOR CO LTD
  • US10821899B2 patent drawing
  • US10821899B2 patent drawing
  • US10821899B2 patent drawing

AI summary

A rotatable rear-view mirror with a display may include a rear-view mirror housing having two openings to make it possible to select one of more visible view surfaces of a display mirror and a general mirror, wherein the rotatable rear-view mirror further include a housing coupled to a mounting guide device disposed inside a windshield glass and having two different openings; a mirror device disposed in one of the openings of the housing; and a display device disposed in a remaining one of the openings and wherein the housing may be configured to be rotatable by a predetermined angle based on a first end portion of the mounting guide device so that a rear view is provided through the mirror device or the display device depending on a request of a driver.