Digital Microscope Adjusts Resolution by Observer Distance

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Solution Overview

Problem

Digital microscopes face challenges in optimizing image presentation for observers at varying distances from the display device, leading to unnecessary resolution and complexity in image production parameters.

Innovation Solution

A digital microscope system that adjusts imaging and capturing parameters based on the observer's distance and visual acuity to ensure the perceivable structure size is maintained, optimizing other image properties like depth of field and frame rate without compromising image sharpness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the imaging system provides high resolution to capture all structure details, then image sharpness is improved, but other image production parameters cannot be optimized

Engineering Contradiction:
Improveimage resolutionVSAvoidoptimization of other image production parameters
Core Design Contradiction:
Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The system dynamically changes imaging parameters (magnification, resolution settings) based on the observer's distance from the display device. When the observer is farther away, the system reduces resolution and adjusts other parameters accordingly, allowing optimization of depth of field, frame rate, and illumination without sacrificing perceivable image quality.

Inventive Principle:
Principle #35Parameter changes

2Area of stationary object

If the monitor is located several meters away from observers to improve surgical field visibility, then space utilization is improved, but image observation quality deteriorates

Engineering Contradiction:
Improvesurgical field spaceVSAvoidimage observation quality
Core Design Contradiction:
Area of stationary objectVSMeasurement precision

Solution Approach 1:

The system dynamically adapts image production parameters based on the observer's distance from the display device. Distance sensors or input devices detect the observer's position, and the control device adjusts magnification, resolution, and other parameters in real-time to maintain optimal image quality regardless of viewing distance.

Inventive Principle:
Principle #15Dynamics

3Productivity

If illumination intensity is reduced to optimize other image production parameters, then depth of field and frame rate are improved, but image resolution deteriorates

Engineering Contradiction:
Improveframe rateVSAvoidimage resolution
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The system coordinates changes across multiple imaging parameters simultaneously. When illumination intensity is reduced to improve frame rate and depth of field, the system compensates by adjusting magnification and applying digital signal processing techniques to maintain adequate resolution, ensuring overall image quality remains optimized for the observer's distance.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11036040B2Digital microscope and digital microscopy method
Publication Date: 2021.06.15 CARL ZEISS MEDITEC AG
  • US11036040B2 patent drawing

AI summary

A digital microscope is provided. The digital microscope includes an adjustable imaging system configured to display an object on an electronic display device, a control device which adjusts the imaging system, and a distance capturing device configured to determine a distance between an observer and the display device. The control device determines a perceivable structure size, perceivable on the display device, depending on the distance, and adjusts the imaging system to permit a resolved structure size, resolved by the display device, to be identical to the perceivable structure size within a given tolerance range.