Modular Lens Main Body with Reversible Outer Housing

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Solution Overview

Problem

Existing camera lenses are bulky and cumbersome, especially when used in film cameras or drones, due to the need for external motor drives and complex mechanical structures for focusing and zooming, which limits their portability and versatility.

Innovation Solution

A modular lens system comprising a lens main body with an inner housing, adjustable functional elements, a controller, and a reversible outer housing that allows for easy exchange of different functional modules, enabling adjustable lens elements, diaphragms, and filters, with a secure and toolless mounting mechanism, and wireless communication for remote control.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If external motor drives and complex mechanical structures are used for focusing and zooming, then lens functionality is improved, but device size and weight increase

Engineering Contradiction:
Improvelens functionalityVSAvoiddevice size
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The lens system is divided into a lens main body containing all optical elements and a separate outer housing. The outer housing can be exchanged to change functionality (focusing, zooming, filtering) without replacing the entire lens assembly, allowing versatile functionality while maintaining a compact base structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lens main body is designed with a universal interface that accepts different outer housings for various functions. A single lens main body can be combined with multiple outer housings to achieve different focusing ranges, zoom capabilities, and filtering options, providing multi-functionality without requiring separate complete lens assemblies for each function.

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

2Adaptability or versatility

If external motor drives and complex mechanical structures are used for focusing and zooming, then lens functionality is improved, but portability deteriorates

Engineering Contradiction:
Improvelens functionalityVSAvoidportability
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

By separating the lens system into a lightweight lens main body and functional outer housings, the design reduces the weight that must be carried. Users only need to attach the outer housing when a specific function is required, making the lens more portable for applications like drone photography where weight reduction is critical.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The lens system transitions from a static, permanent assembly to a dynamic, reconfigurable system. Outer housings can be quickly attached and detached based on operational needs, allowing the lens to adapt its functionality dynamically while maintaining ease of transport when not in use.

Inventive Principle:
Principle #15Dynamics

3Ease of operation

If modular design with reversible outer housing is used, then portability is improved, but structural complexity increases

Engineering Contradiction:
ImproveportabilityVSAvoidstructural complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The securing device integrates multiple functions into a single mechanism: it mechanically attaches the outer housing to the lens main body, provides electrical contact through the signal interface, and ensures proper alignment. This merging of functions reduces the number of separate components needed despite the modular design.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The signal interface acts as an intermediary between the outer housing and the lens main body, handling both mechanical securing and electrical communication. This intermediary component simplifies the overall structure by combining attachment and signaling functions in a single integrated interface.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Ease of operation

If toolless mounting mechanism is used, then ease of operation is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improveease of mountingVSAvoidmounting precision
Core Design Contradiction:
Ease of operationVSManufacturing precision

Solution Approach 1:

The securing device is designed to be self-aligning and self-securing through a toolless mechanism. The outer housing automatically finds its correct position and locks into place without requiring external tools or complex alignment procedures, making the mounting process as easy as snapping the housing onto the lens main body.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11729484B2Lens main body for a lens, outer housing for a lens, lens system and lens assembly
Publication Date: 2023.08.15 CARL ZEISS AG
  • US11729484B2 patent drawing
  • US11729484B2 patent drawing
  • US11729484B2 patent drawing

AI summary

A lens main body includes an inner housing, a lens element mounted on the inner housing, an adjustable functional element mounted on the inner housing, and an electrical drive arranged on the inner housing to adjust the functional element, a controller arranged on the inner housing, a securing device configured to reversibly receive an outer housing extending around the inner housing in a tubular fashion, and a first signal interface to receive control signals for the controller, arranged on the inner housing, and configured to reversibly couple to a mating interface of the outer housing. An outer housing for the lens main body, and a lens formed from the lens main body and the outer housing have an altered functional scope vis-à-vis the lens main body. In addition, a lens assembly includes, besides the lens main body, two outer housings having a different functional scope.