Hardened Plastic Optical Adapter for Night Vision Camera

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Solution Overview

Problem

Existing optical adapter systems are limited in application, complex, noisy, and not suitable for harsh environments, exposing delicate components and being costly due to their metal materials, which poses risks in military operations.

Innovation Solution

A flexible, quiet, secure, and cost-effective optical adapter system using hardened plastic components with a collar and attachment mechanism that securely connects image modifying devices like night vision monoculars to cameras and telephoto lenses, featuring a locking mechanism and electrical isolation, allowing assembly in dark environments without tools.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If metal materials are used in adapter construction, then strength and durability are improved, but cost increases and erosion/deformation/rust occurs in harsh climates

Engineering Contradiction:
Improveadapter strengthVSAvoiderosion and rust in harsh climates
Core Design Contradiction:
StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent uses hardened plastic materials (such as Delrin or other acetal homopolymers) instead of traditional metal materials for adapter construction. This composite material approach provides sufficient strength and durability while eliminating the problems of erosion, deformation, and rust that occur with metal in harsh climates, directly resolving the technical contradiction between strength and environmental resistance.

Inventive Principle:
Principle #40Composite materials

2Reliability

If complex assembly mechanisms are used, then connection security is improved, but noise during assembly increases and tool requirements increase

Engineering Contradiction:
Improveconnection securityVSAvoidnoise during assembly
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent replaces traditional mechanical fastening systems (screws, bolts, clips requiring tools) with a snap-fit insertion mechanism that uses elastic deformation and friction. The adapter simply snaps onto the optical device barrel, providing secure connection without the noise and tool requirements of complex mechanical systems, thus resolving the contradiction between connection security and assembly noise.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Adaptability or versatility

If delicate components like wiring and pin connectors are exposed, then connectivity functionality is improved, but vulnerability to environmental damage increases

Engineering Contradiction:
Improveconnectivity functionalityVSAvoidenvironmental damage to delicate components
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent nests the delicate electrical components (wiring and pin connectors) inside the adapter housing, with only the essential optical interface exposed. The attachment member with electrical connectors is positioned such that wiring remains protected within the adapter structure, reducing vulnerability to environmental damage while maintaining connectivity functionality through the protected interface.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentUS7648291B2Optical adapter system and method
Publication Date: 2010.01.19 SENSORS UNLIMITED INC
  • US7648291B2 patent drawing
  • US7648291B2 patent drawing
  • US7648291B2 patent drawing

AI summary

System and method for modifying an optical assembly with another image modifying device by using an adapter assembly to connect or couple three image modifying devices together. The adapter assembly includes two adapters that have collars to hold a night vision monocular between them, and to each connect with a camera and lens, respectively, modifying a camera-lens assembly for use in night time photo surveillance. Attachment members on each adapter may include mechanical and/or electrical connectors to couple or connect the adapters to each other, and/or to electrically connect the camera with the lens.