Dual Prism Camera Module for Slim Optical Image Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current camera technologies face challenges in achieving optical image stabilization while maintaining a slim form factor, especially when using a single image sensor for both front and rear photography, as they struggle with accurately compensating camera shake and maintaining high image quality across different optical zoom levels.
Innovation Solution
The implementation of a dual prism system with independently rotating prisms, each with its own actuator and hall effect sensor, allows for precise angle compensation and optical image stabilization, enabling the use of a single image sensor for both front and rear photography while maintaining a slim camera design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a single image sensor is used for both front and rear photography, then camera thickness is reduced, but it becomes difficult to achieve accurate optical image stabilization and camera shake compensation
Solution Approach 1:
The optical path is segmented into two separate paths using beam splitters: one path for front photography and one for rear photography. Each path has its own prism apparatus (first and second prisms) that can be independently controlled, allowing the system to maintain thin form factor while achieving accurate optical image stabilization for each direction separately.
2Measurement precision
If dual prism apparatus are used with independent rotation control, then optical image stabilization accuracy is improved, but device complexity increases
Solution Approach 1:
The first and second prism apparatus are designed with identical structures, each capable of reflecting light and being independently rotated for optical image stabilization. This universal design allows the system to achieve high measurement precision for camera shake detection while managing complexity through standardized components that can be controlled independently for multiple functions (front and rear photography stabilization).
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
This solution effectively stabilizes images across various optical zoom levels, improves optical image stabilization accuracy, and reduces camera thickness, allowing for a more compact and efficient camera design that can handle both front and rear photography with a single image sensor.
Implementation Method 1
a first prism apparatus configured to reflect a first input light input in a first direction to a second direction
Implementation Method 2
a second prism apparatus configured to reflect a second input light input in a third direction opposite to the first direction to the second direction
Implementation Method 3
an image sensor configured to generate an image signal based on the first input light or the second input light passing through the lens apparatus
Data Source
AI summary
A camera and a terminal including the same are disclosed. The camera according to an embodiment of the present invention includes: a first prism apparatus to reflect a first input light input in a first direction to a second direction; a second prism apparatus to reflect a second input light input in a third direction opposite to the first direction to the second direction, and output the reflected second input light to the first prism apparatus; a lens apparatus to receive the first input light from the first prism apparatus or the second input light from the second prism apparatus; and an image sensor configured to generate an image signal based on the first input light or the second input. Accordingly, it is possible to implement a slim camera that can use a single image sensor at the time of front photographing and rear photographing.