Display System Light Recovery Brightness Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current display systems face challenges in achieving high brightness while maintaining a low cost and ensuring the relative brightness of images matches the relative relationship of image data, as increasing lamp power reduces lamp life and costs, and brightness is not proportional.
Innovation Solution
A display system comprising a light source, light modulator, recovery device, and light intensity adjustment device, where the light modulator modulates light according to image data, the recovery device recovers non-image light, and the light intensity adjustment device adjusts the original light source intensity to maintain consistent total intensity, ensuring consistent brightness across different images.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the lamp power is increased to increase total brightness of light emitted by a light source, then the brightness is improved, but the lamp life is reduced and the cost increases
Solution Approach 1:
The patent recovers non-image light that would otherwise be wasted and redirects it to illuminate dark regions of the image. The recovery device captures light reflected from the screen and guides it back through the optical system, allowing the same light source to be used more efficiently without increasing power consumption or reducing lamp life.
2Illumination intensity
If the lamp power is increased to increase total brightness of light emitted by a light source, then the brightness is improved, but the cost increases
Solution Approach 1:
The patent recovers non-image light that would otherwise be wasted and redirects it to illuminate dark regions of the image. The recovery device captures light reflected from the screen and guides it back through the optical system, allowing the same light source to be used more efficiently without increasing power consumption or reducing lamp life.
3Illumination intensity
If the light source intensity is increased to improve brightness, then the total brightness is improved, but the relative brightness matching of different images is lost
Solution Approach 1:
The patent applies different lighting strategies to different regions of the image. Bright regions use the original light path while dark regions receive recovered light, allowing localized brightness adjustment without affecting the overall brightness matching across different images.
Solution Approach 2:
The system uses image data to control the light recovery and modulation process, ensuring that the recovered light is applied only where needed and that the total light intensity remains proportional to the original image data, thereby maintaining brightness matching precision.
4Illumination intensity
If a light recovery system is added to recover non-image light, then the brightness is improved, but the device complexity increases
Solution Approach 1:
The light recovery device serves multiple functions: it captures reflected light, redirects it through the optical system, and combines it with the original light path. This multi-functional design reduces the need for separate components and minimizes overall system complexity.
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 approach maintains lower costs and improves image brightness by recovering non-image light and adjusting the original light intensity, ensuring the relative brightness of images matches the relative image data, thus addressing the limitations of existing systems.
Implementation Method 1
the light modulator is configured to modulate the light incident thereto according to image data of an image to be displayed, so as to form image light for displaying the image and non-image light not for displaying the image
Implementation Method 2
the light homogenizing element is configured to homogenize the light incident from the incidence side thereof, and the homogenized light is emitted to the light modulator
Implementation Method 3
the recovered non-image light is reflected to the incidence side of the light homogenizing element by the mirror
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A display system (20)includes: a light source (21), a light modulator (22), a recovery device (23), and a light intensity adjustment device (24). The light source (21) emits original light that is incident to the light modulator (22). The light modulator (22) modulates, on the basis of image data of an image to be displayed, the light incident thereto so as to form image light (P) and non-image light (S). The recovery device (23) recovers the non-image light (S), and the recovered non-image light (S) is incident to the light modulator (22) . The light intensity adjustment device (24) adjusts, on the basis of the intensity of the non-image light (S) corresponding to the currently modulated image to be displayed, the intensity of the original light emitted by the light source (21), thus allowing total intensity of the original light and the recovered non-image light (S) that are incident to the light modulator (22) to be kept consistent in modulation periods for different images to be displayed. The display system (20) can, at a low cost, increase image brightness and ensure that the relative brightness of different images matches relative relationship of the image data of the images.