Microscope Optical Element Positioning Apparatus

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Solution Overview

Problem

Existing positioning apparatuses for optical devices in microscopes face challenges in cleaning and sterilization due to difficult-to-clean transitions and potential bacterial penetration between the optical element and its mounting, especially during autoclaving or chemical disinfection.

Innovation Solution

A positioning apparatus with a carrier device and a holding apparatus that creates a distance space between the optical device and the holding apparatus, minimizing transition zones and allowing for efficient cleaning and sterilization, while maintaining stable fixation and an unobstructed view.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sealing rings are used to seal the optical element with the mounting, then sealing is improved, but the mounting construction becomes larger and cleaning becomes difficult

Engineering Contradiction:
ImprovesealingVSAvoidcleaning
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The invention removes sealing rings from the mounting structure entirely. Instead, the optical element is held in position by the holding apparatus geometry itself, which creates natural sealing through precise mechanical fit. This extraction of the sealing function from a separate component to the structural design resolves the contradiction by eliminating the cleaning difficulty caused by sealing rings while maintaining sealing effectiveness.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Rather than adding sealing components to prevent contamination, the invention inverts the approach by designing the holding apparatus to prevent contamination from the outset through its geometric configuration. The holding apparatus creates a self-sealing effect through precise dimensional relationships, eliminating the need for separate sealing elements that would hinder cleaning.

Inventive Principle:
Principle #13The other way round (Inversion)

2Length of stationary object

If optical element is glued into mounting, then mounting can be thinner, but bacteria can penetrate into transitions and cannot be removed during cleaning

Engineering Contradiction:
Improvemounting thicknessVSAvoidbacterial contamination
Core Design Contradiction:
Length of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The invention removes adhesive from the mounting process. Instead of gluing the optical element into the mounting, the holding apparatus uses mechanical holding devices that grip the optical element directly. This eliminates the adhesive layer and associated transition zones where bacteria could hide, while maintaining thin mounting construction through efficient mechanical holding design.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

Rather than using adhesive to secure the optical element and accepting the contamination risk in transition zones, the invention inverts the approach by using mechanical holding devices that create a clean, accessible interface. The holding devices embrace the optical element in a manner that prevents bacterial penetration while allowing complete cleaning access, turning the potential contamination problem into a cleanable design.

Inventive Principle:
Principle #13The other way round (Inversion)

3Stability of the object's composition

If adhesive is used to fix optical element, then fixing is achieved, but adhesive proves unresistant to temperature loading during autoclaving or chemical disinfectants

Engineering Contradiction:
Improvefixation stabilityVSAvoidresistance to autoclaving and disinfection
Core Design Contradiction:
Stability of the object's compositionVSReliability

Solution Approach 1:

The invention extracts adhesive entirely from the fixation process. Mechanical holding devices replace the adhesive function, providing fixation that is inherently resistant to autoclaving and chemical disinfectants. The holding devices use friction and geometric interlocking that remain stable under extreme temperature and chemical conditions, eliminating the reliability problems of adhesive bonding.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The holding apparatus is designed as a disposable or easily replaceable component that can withstand autoclaving and disinfection processes. Rather than relying on adhesive that degrades under these conditions, the mechanical holding structure is designed to be either reusable after sterilization or replaceable, ensuring continuous reliability without adhesive degradation issues.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

4Stability of the object's composition

If holding devices are positioned close to optical device for stable fixing, then fixation stability is improved, but cleaning access is restricted

Engineering Contradiction:
Improvefixation stabilityVSAvoidcleaning access
Core Design Contradiction:
Stability of the object's compositionVSEase of operation

Solution Approach 1:

The holding devices are positioned in multiple dimensions around the optical element rather than solely at the edges. This three-dimensional arrangement provides stable fixation from multiple angles while creating channels and pathways that allow cleaning agents to flow around and access all surfaces. The dimensional distribution of holding devices resolves the contradiction by maintaining stability while enabling cleaning access.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The holding apparatus uses multiple discrete holding devices distributed around the optical element rather than a single continuous clamp. This segmentation creates gaps between holding devices that allow cleaning agents to penetrate and reach all surfaces of the optical element, while each holding device independently contributes to overall fixation stability through their collective arrangement.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS8072701B2Positioning apparatus for an optical element
Publication Date: 2011.12.06 OCULUS OPTIKGERAETE GMBH
  • US8072701B2 patent drawing
  • US8072701B2 patent drawing

AI summary

The present invention relates to a positioning apparatus (10) of a positioning unit for positioning an optical device of the positioning unit comprising at least one optical element in the ray path of a microscope in front of an eye to be observed, wherein the positioning apparatus comprises a carrier device (11) for coupling the positioning apparatus to the microscope and a holding apparatus (12) for holding the optical element, whereby the holding apparatus comprises holding devices (20) for connection of the optical device to the holding apparatus which are configured in such a manner that a distance space (24) is formed between the optical device and the holding apparatus.