Movable Lens Light Source Module for Adjustable Viewing Angle
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional liquid crystal displays lack adjustable light viewing angles, necessitating increased light emitting diodes or driving current to achieve wide viewing angles and high brightness, which raises costs and power consumption.
Innovation Solution
A light source module comprising a light emitting device, a lens module, and a first reflection device, where the lens module adjusts the light beam by focusing or dispersing it, and the first reflection device reflects the light to adjust the viewing angle of the light incident surface, allowing the lens to move relative to the light emitting device to change the viewing angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of light emitting diodes is increased to achieve wide viewing angle and high brightness, then the viewing angle and brightness are improved, but the cost increases
Solution Approach 1:
The patent employs a movable lens that can shift position along the optical axis to dynamically adjust the viewing angle. By moving the lens between a first position (wide viewing angle) and a second position (narrow viewing angle), the system adapts to different viewing requirements without adding more light emitting diodes, thereby avoiding increased cost and device complexity.
Solution Approach 2:
The patent changes the optical parameters by adjusting the lens position rather than increasing the number of light sources. By varying the distance between the lens and the light emitting diode, the system modifies the light beam characteristics (convergence or divergence) to achieve different viewing angles and brightness levels, eliminating the need for additional components.
2Illumination intensity
If the driving current of light emitting diode is increased to achieve wide viewing angle and high brightness, then the viewing angle and brightness are improved, but the power consumption increases
Solution Approach 1:
The patent uses a dynamically adjustable lens position to control light distribution. By moving the lens to different positions, the system optimizes light utilization efficiency, achieving high brightness through improved optical geometry rather than increased current, thus reducing power consumption.
Solution Approach 2:
The patent replaces the electrical control method (increasing current) with an optical-mechanical control method (moving the lens). This substitution allows brightness and viewing angle adjustment through physical repositioning of optical components, eliminating the need for higher power consumption.
3Adaptability or versatility
If conventional liquid crystal display structure is used, then the display function is achieved, but the viewing angle cannot be adjusted arbitrarily
Solution Approach 1:
The patent introduces a movable lens mechanism that can transition between fixed positions to provide adjustable viewing angles. This dynamic element is integrated into the existing display structure, adding adaptability without significantly increasing overall structural complexity.
Solution Approach 2:
The patent makes the display system multi-functional by enabling it to operate in both wide viewing angle mode and narrow viewing angle mode using the same hardware structure. The single lens serves multiple functions by being repositioned, eliminating the need for separate structures for different viewing angle requirements.
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 adjustable viewing angles in liquid crystal displays, reducing the need for multiple light emitting diodes or increased power consumption, thereby lowering costs and improving display flexibility.
Implementation Method 1
The lens module is adapted to adjust the light beam to be focused or dispersed
Implementation Method 2
The first reflection device is adapted to receive the light beam passing from the lens module, and reflect the light beam
Data Source
AI summary
A display apparatus including a display panel and a light source module is provided. The display panel displays an image frame according to a light beam. The light source module provides the light beam to the display panel. The light source module includes a light emitting device, a lens module, a reflection device, and a light emitting surface. The light emitting device provides the light beam. The lens module is disposed in a transmission path of the light beam and adjusts the light beam to be focused or dispersed. The reflection device receives the light beam passing from the lens module and reflects the light beam to the light emitting surface. The lens module includes a lens disposed in the transmission path of the light beam and moves relative to the light emitting device to adjust a viewing angle of the light emitting surface.