Scanning Display Apparatus for Superimposing Electronic Images on Optical Views
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Solution Overview
Problem
Conventional image display apparatuses in cameras suffer from size constraints, poor image quality, and ghosting issues when attempting to superimpose electronic images onto optical images, making them unsuitable for compact viewing systems and hindering the assessment of image quality.
Innovation Solution
A scanning display apparatus is designed with a micro lens array, light source, and scanning means, utilizing a polarizing beam splitter, quarter-wave plate, and reflecting condenser member to superimpose electronic images onto optical images within the viewing optical system, ensuring high image quality and minimizing ghosting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a scanning display apparatus is used to superimpose electronic images on optical images, then image quality and resolution are improved, but the device size becomes too large to fit in compact viewing systems
Solution Approach 1:
The patent divides the optical path into separate segments: the viewing optical system for optical images and the scanning display apparatus for electronic images. This segmentation allows each system to be optimized independently, enabling high-resolution electronic image display without requiring the entire system to be oversized.
Solution Approach 2:
The scanning display apparatus is nested within the viewing optical system's optical path. The light source, scanning means, and superimposition means are arranged in a compact configuration that fits within the existing camera body, allowing the electronic image display functionality to be integrated without significantly increasing overall device volume.
2Ease of operation
If a liquid crystal display device is used to show photographed images, then the images can be viewed, but resolution and saturation reproducibility deteriorate
Solution Approach 1:
The patent replaces the liquid crystal display device (electromechanical system) with a scanning display apparatus that uses optical scanning and superimposition. This substitution eliminates the resolution and saturation limitations of liquid crystal displays by using a different technical approach based on optical projection and retinal scanning.
3Volume of moving object
If internal reflection of a prism member is used to display electronic images, then the display apparatus can be compact, but ghost images are formed due to undesired reflected light
Solution Approach 1:
The patent extracts the harmful internal reflection component from the optical path by using a polarizing beam splitter and quarter-wave plate combination. This configuration separates the desired light path from undesired reflections, eliminating ghost images while maintaining the compactness of the prism-based design.
Solution Approach 2:
The patent changes the optical parameters by introducing polarizing elements (polarizing beam splitter and quarter-wave plate) that control the polarization state of light. This parameter change allows selective reflection and transmission of light, preventing undesired reflections that cause ghost images while maintaining compact device size.
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 solution enables a compact, high-resolution image display that effectively superimposes electronic and optical images, enhancing image quality assessment and reducing ghosting, thus addressing the limitations of existing technologies.
Implementation Method 1
a polarizing beam splitter disposed in the optical path of said viewing optical system that reflects light from said incidence end surface
Implementation Method 2
a quarter-wave plate disposed between said polarizing beam splitter and said reflecting condenser member
Implementation Method 3
a reflecting condenser member disposed in the optical path of said viewing optical system that transmits light of said viewing optical system and reflects light from said polarizing beam splitter
Implementation Method 4
a micro lens array disposed on an incidence end surface of said superimposition means on which said electronic image is incident
Data Source
AI summary
What is disclosed is a display apparatus that introduce an electronic image that is generated electronically into a viewing optical system through which an object is viewed to make the electronic image viewable in such a way as to be superimposed on an image of the object. The electric image forming apparatus has a light source, a micro lens array and scanning means for scanning light from the light source to form an image on the micro lens array. There is disclosed a scanning display apparatus that introduces an image formed on the micro lens and superimpose it on an image of an object and a camera in which an object image formed optically and an electronic image are made viewable in a superimposed manner using the scanning display apparatus.