Sensor-Moving Optical Assembly for Stable Focus and Zoom

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Solution Overview

Problem

Conventional optical systems face challenges in achieving stable and efficient focusing and zooming without moving heavy lenses, which are difficult to maneuver due to their weight.

Innovation Solution

An optical system with a movable portion and a driving assembly that drives the optical sensing element along the optical axis, utilizing a guiding structure and adsorption structures to facilitate movement without moving the lens, and employing a coil or piezoelectric assembly to achieve focusing and zooming.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If heavy lenses are moved to achieve focusing and zooming, then optical functions are achieved, but the difficulty of operation increases due to the weight of the lens

Engineering Contradiction:

Improveoptical function stabilityVSAvoidlens movement difficulty

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

Instead of moving the heavy lens to achieve focusing and zooming, the patent inverts the approach by moving the optical sensing element (sensor) while keeping the lens stationary. This is accomplished through a driving assembly that moves the sensor along the optical axis, thereby achieving the same optical effects without the mechanical burden of moving the lens.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent replaces the traditional mechanical lens-driven system with a sensor-driven system. The driving assembly uses electromagnetic or piezoelectric mechanisms to move the sensor, substituting the heavy mechanical lens movement with a lighter, more controllable sensor movement mechanism.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If multiple driving assemblies are used to drive optical elements, then optical functions are achieved, but the device complexity increases

Engineering Contradiction:

Improveoptical function capabilityVSAvoiddriving assembly quantity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs a single driving assembly that performs multiple functions: it can move the optical sensing element along the optical axis to achieve both focusing and zooming operations. This multi-functional approach eliminates the need for separate driving assemblies for different optical functions, thereby reducing overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the focusing and zooming driving mechanisms into a single integrated driving assembly. By merging these functions into one component, the system achieves the required optical adaptability while minimizing the number of parts and simplifying the overall structure.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If the lens is made heavier to improve optical quality, then optical performance is improved, but the weight of the moving object increases

Engineering Contradiction:

Improveoptical quality stabilityVSAvoidlens weight

Core Design Contradiction:

ReliabilityVSWeight of moving object

Solution Approach 1:

The patent inverts the traditional approach by making the lens heavy for optimal optical quality while keeping it stationary. Instead of moving the heavy lens, the system moves the lighter optical sensing element, thereby maintaining high optical quality without the penalty of moving large mass.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent effectively counteracts the weight issue by not including the heavy lens in the moving mass. The driving assembly only needs to move the relatively light sensor and its mounting structure, creating a counterweight effect where the stationary heavy lens provides optical stability without contributing to the moving mass.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

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

Enables stable and efficient focusing and zooming by moving the optical sensing element along the optical axis, providing support and stabilization without the need to move the lens, thus enhancing optical performance.

Implementation Method 1

The coil assembly and the magnetic assembly corresponding to the coil assembly drives the movable portion to move relative to the fixed portion along the first dimension

Methodology Applied

Scientific EffectElectromagnetic force: Lorentz Force

Implementation Method 2

The driving assembly includes a piezoelectric assembly driving the movable portion to move relative to the fixed portion along the first dimension

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 3

The optical system further includes a plurality of adsorption structures generating an adsorption force

Methodology Applied

Scientific EffectAdsorption: Adsorption

Data Source

PatentUS12501136B2Optical system

Publication Date: 2025.12.16 ACTUTEK CORP

AI summary

An optical system is provided. The optical system includes a movable portion, a fixed portion, and a driving assembly. The movable portion is movable relative to the fixed portion. The driving assembly drives the movable portion to move relative to the fixed portion. The driving assembly is located between the movable portion and the fixed portion.