Adjustable Mirror Assembly for Periscope Focal Length Switching
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Solution Overview
Problem
Existing mobile devices with periscope camera modules lack the ability to adjust focal length due to fixed lens configurations, limiting their functionality.
Innovation Solution
An adjustable mirror motor assembly is introduced, comprising a base, mirror motor component, and housing, with a dragging member and coils, allowing the mirror to pivot and slide, enabling switching between long and short focal lengths by altering the mirror's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed lens configuration is used in a periscope camera module, then the structure is simple and easy to manufacture, but the focal length cannot be changed
Solution Approach 1:
The patent applies the dynamics principle by making the mirror assembly movable instead of fixed. The mirror can pivot and slide along the optical path, allowing dynamic adjustment of the optical configuration. This enables the camera module to switch between different focal lengths (telephoto and short focal length modes) by changing the mirror's position and angle, directly resolving the contradiction between fixed structure simplicity and focal length adjustability.
2Adaptability or versatility
If a movable mirror assembly is added to enable focal length adjustment, then adaptability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated mirror assembly that combines both pivoting and sliding capabilities. The mirror assembly is coupled with a motor that can perform both rotational (pivoting) and linear (sliding) movements, allowing the system to achieve focal length adjustment through a unified mechanism rather than separate components. This merging approach reduces overall system complexity while maintaining adaptability.
Solution Approach 2:
The mirror assembly serves multiple functions: it acts as both a reflective element and a movable optical element for focal length adjustment. The same mirror assembly can pivot to change the angle of reflection and slide to change the optical path length, providing multi-functionality within a single component. This universal design allows one component to handle multiple adjustment requirements, reducing the need for additional specialized parts.
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 mobile devices to switch between long and short focal lengths, enhancing camera functionality and adaptability.
Implementation Method 1
at least one coil is on the coil fixation portion... a magnet component is on the magnet fixation portion
Data Source
AI summary
An adjustable mirror motor assembly includes a base, a mirror motor component, and a housing. The mirror motor component is fixed on the base and includes a mount and a dragging member. The mount is fixed on the base. A pivot end of the dragging member is pivotally connected to a pivot portion of the mount, and a slide end of the dragging member is slidably disposed in a slide portion of the mount, so that the slide end is pivotally rotated with respect to the pivot end and is slidably moved in the slide portion. A magnet component is on a magnet fixation portion of the dragging member. A mirror is on a mirror fixation portion of the dragging member. The housing covers the base and the mirror motor component.