Display Unit Optical Axis Alignment Retrofit

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Solution Overview

Problem

Existing optical devices that superimpose observation and video light struggle to integrate a display unit with a first optical system, making it difficult to retrofit observation devices for simultaneous observation and video display, especially for users accustomed to specific devices or performance standards.

Innovation Solution

A display unit is designed with a mounting member and a housing that accommodates a display element and a deflection member, allowing the deflection member to be positioned on the axis of the lens group, ensuring the video light axis aligns with the observation light axis, enabling seamless integration with existing optical systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the display element and deflection member are directly incorporated between the first objective lens and the eyepiece on the optical path of observation light, then the video light can be superimposed on the observation light, but it becomes difficult to combine with existing observation devices and retrofit them

Engineering Contradiction:
Improvecompatibility with existing observation devicesVSAvoidintegration complexity of display unit
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display unit is divided into separate functional modules: a housing containing the display element and deflection member, and a mounting member with mounting holes. This segmentation allows the display unit to be designed independently and then integrated with existing observation devices through the mounting interface, resolving the contradiction between adaptability and complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mounting member is designed with universal mounting holes that can be attached to various types of observation devices (binoculars, telescopes, microscopes). This universal interface enables the same display unit to be retrofitted onto different existing devices, enhancing adaptability without increasing integration complexity.

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

2Manufacturing precision

If the deflection member is positioned on the axis of the lens group, then the video light axis aligns with the observation light axis for seamless integration, but the structural alignment becomes more difficult to achieve

Engineering Contradiction:
Improvealignment precision of optical axesVSAvoiddifficulty of positioning deflection member
Core Design Contradiction:
Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The housing is pre-formed with a through-hole at a predetermined position, and the mounting member is pre-configured with mounting holes at specific locations. This preliminary positioning of structural features simplifies the subsequent alignment process, ensuring that when components are assembled, the deflection member automatically positions on the lens group axis, achieving precise optical axis alignment without complex manufacturing procedures.

Inventive Principle:
Principle #10Preliminary action

3Adaptability or versatility

If the display unit is designed as a separate module with mounting holes, then it can be retrofitted to existing devices, but the overall structure becomes more complex

Engineering Contradiction:
Improveretrofit capabilityVSAvoidmodular structure complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display unit is segmented into a housing module containing optical components and a mounting module with attachment interfaces. This segmentation enables independent design and manufacturing of each module, simplifying the overall system while maintaining retrofit capability. The mounting holes in the mounting member provide a standardized interface that reduces integration complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mounting member acts as an intermediary component between the display unit and existing observation devices. It provides standardized mounting holes that serve as a bridge, allowing the display unit to be attached to various devices without requiring direct integration with each device's specific structure, thereby reducing overall system complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

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

This configuration allows for the retrofitting of observation devices to display both observation and video images, enhancing user experience by maintaining the original performance and functionality of the device while enabling video overlay.

Implementation Method 1

a first deflection member that deflects the video light from the display element

Methodology Applied
Scientific EffectLight deflection: Reflection

Data Source

PatentUS20240053606A1Display unit and optical display device
Publication Date: 2024.02.15 SEIKO EPSON CORP
  • US20240053606A1 patent drawing
  • US20240053606A1 patent drawing
  • US20240053606A1 patent drawing

AI summary

A display unit includes a mounting member mounted on a first accommodation member configured to accommodate a lens group including an objective lens and an eyepiece, a display element that emits video light, a first deflection member that deflects the video light from the display element, and a second accommodation member configured to accommodate the display element and the first deflection member. The second accommodation member is mounted on the first accommodation member, such that the first deflection member is disposed on an axis of the lens group, by the mounting member. When the first deflection member is disposed on the axis of the lens group, an axis of the video light deflected by the first deflection member overlaps with the axis of the lens group.