See-Through Display Optics for Stray Light Suppression

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Solution Overview

Problem

Existing see-through computer display systems face challenges in optimizing user experience due to complex operations in presenting content, particularly in managing stray light, which affects image quality and user comfort.

Innovation Solution

The implementation of improved stray light management systems, including optical configurations and light suppression technologies, such as laminated multiple polarizer films and dark light traps, to minimize stray light and enhance image clarity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If see-through display systems present content in the display, then user engagement and information delivery are improved, but stray light interference increases and image quality deteriorates

Engineering Contradiction:
Improvecontent delivery effectivenessVSAvoidstray light interference
Core Design Contradiction:
Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful effect of light by using polarizer films that selectively transmit polarized light from displays while blocking stray unpolarized light. The harmful stray light is transformed into a filtering mechanism that improves image quality by blocking unwanted light paths.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent employs laminated multiple polarizer films as a composite optical system. These composite polarizer structures combine multiple layers with different orientations to achieve selective light transmission, blocking stray light while maintaining display content visibility.

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If optical systems use multiple polarizer films and light traps to reduce stray light, then image contrast and clarity are improved, but device complexity increases

Engineering Contradiction:
Improvestray light managementVSAvoidoptical system complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into integrated optical components. The polarizer films serve both as light transmission media and as stray light blocking elements. Light traps are integrated into the optical path to simultaneously manage stray light and maintain system compactness.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The polarizer films perform multiple functions: transmitting polarized light from the display, blocking stray unpolarized light, and maintaining image quality. This multi-functionality reduces the need for separate dedicated components for each function.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 image contrast and reduces glare, providing a more immersive and comfortable user experience by minimizing stray light interference.

Implementation Method 1

laminated multiple polarizer films and dark light traps

Methodology Applied
Scientific EffectPolarization: Polarisation

Implementation Method 2

block stray light

Methodology Applied
Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 3

dark light traps to minimize stray light

Methodology Applied
Scientific EffectAbsorption (EM radiation): Absorption (EM radiation)

Implementation Method 4

stray light management systems

Methodology Applied
Scientific EffectLight: Light

Data Source

PatentUS20250347920A1See-through computer display systems with adjustable zoom cameras
Publication Date: 2025.11.13 OSTERHOUT GROUP INC
  • US20250347920A1 patent drawing
  • US20250347920A1 patent drawing
  • US20250347920A1 patent drawing

AI summary

Aspects of the present invention relate to methods and systems for the see-through computer display systems with adjustable-zoom cameras positioned such that their respective capture fields-of-view at least partially overlap at a target distance.