Six-Primary Solid-State Illuminator for Stereoscopic Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stereoscopic display devices using wavelength multiplexing technology face high costs and low efficiency due to the use of lasers, particularly for green wavelengths, which are expensive and inefficient, necessitating a more cost-effective and efficient method for producing two sets of primary colors.
Innovation Solution
A six-primary solid-state illuminator incorporating laser sources and photoluminescence devices with phosphor materials, combined with a multi-band filter and controller, to produce non-overlapping primary-color combinations for stereoscopic displays, where laser beams excite photoluminescence devices to generate light beams that are then filtered and directed for left and right eye images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If laser sources are used to provide two sets of three primary colors for wavelength multiplexing stereoscopic display, then the stereoscopic display can be achieved, but the cost is significantly high and the efficiency is low
Solution Approach 1:
The patent replaces expensive laser sources with cheaper LED light sources combined with phosphor materials. Specifically, it uses blue LED excitation with yellow phosphor (Y3Al5O12:Ce) to generate yellow light, and red LED excitation with red phosphor to generate red light, achieving cost reduction while maintaining display functionality
Solution Approach 2:
The patent introduces phosphor materials as intermediary substances that convert the wavelength of LED light to the desired spectrum. The phosphor layers act as mediators between the LED excitation source and the final displayed color, enabling efficient wavelength conversion without requiring expensive lasers
2Use of energy by moving object
If green laser is used to provide green primary color, then the wavelength multiplexing can be achieved, but the efficiency is low and the cost is high
Solution Approach 1:
The patent replaces the expensive and inefficient green laser with a cost-effective LED-phosphor combination. Blue LED excitation with yellow phosphor (Y3Al5O12:Ce) generates yellow light that serves as the green primary color in the display, significantly improving efficiency while reducing cost
Solution Approach 2:
The patent changes the physical parameters of light generation by using LED excitation at different wavelengths (blue and red) combined with phosphor conversion, rather than using a green laser. This parameter change enables more efficient energy conversion and lower cost operation
3Adaptability or versatility
If two light sources are used to produce two sets of three primary colors, then the stereoscopic display is achieved, but the device complexity increases
Solution Approach 1:
The patent creates a universal light source system where multiple LED-phosphor combinations can serve multiple functions. The same blue LED with yellow phosphor can provide yellow light for both left-eye and right-eye images, while red LEDs with red phosphor serve similar dual purposes, reducing the need for separate specialized light sources for each function
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
The solution reduces the cost and improves efficiency by using photoluminescence devices to generate green and yellow light, allowing for cost-effective production of non-overlapping primary-color combinations for stereoscopic displays, enhancing the efficiency and reducing the overall cost of light sources.
Implementation Method 1
the first photoluminescence device is excited by a part of the first light beam and provides a second light beam with a second wavelength
Implementation Method 2
The multi-band filter is used for receiving the first light beam, the second light beam, and the third light beam coming from the first optical module and receiving the fourth light beam and the fifth light beam coming from the second optical module
Data Source
AI summary
A six-primary solid state illuminator includes a first light source, a second light source, a third light source, a first photoluminescence device, a second photoluminescence device, and a multi-band filter. The first light source provides a light with a first wavelength. The first photoluminescence device under excited state provides a light with a second wavelength. The second light source provides a light with a third wavelength. The third light source provides a light with a fourth wavelength. The second photoluminescence device under excited state provides a light with a fifth wavelength. The light beams of the first light source, the second light source, and the first photoluminescence device are converted to a first primary combination after passing through the multi-band filter. The light beams of the third light source and the second photoluminescence device are converted to a second primary combination after reflected at the multi-band filter.