Unlock instant, AI-driven research and patent intelligence for your innovation.

A color-mixing light-emitting method and projection device for improving projection brightness

A projection device and brightness technology, applied in the optical field, can solve the problems of low brightness of RGB LED light source, inability to use small-sized micro projectors, low luminous efficiency, etc., and achieve clear projection images, low color gamut and power, and clear viewing. Effect

Active Publication Date: 2019-09-06
IVIEW DISPLAY SHENZHEN CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The currently used LED light source has a relatively low green luminous efficiency, so the brightness of the overall RGB LED light source is not high. Although the industry has also launched an HLD light source, which can break through the level of 1000 ANSI brightness, it requires greater brightness to achieve this. space, the volume of the product will increase, and it cannot be used on a small-volume micro-projector

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A color-mixing light-emitting method and projection device for improving projection brightness
  • A color-mixing light-emitting method and projection device for improving projection brightness
  • A color-mixing light-emitting method and projection device for improving projection brightness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An embodiment of the present invention provides a color-mixing lighting method for improving projection brightness. The method is applied to a projection device using an LED light source. Please refer to figure 1 , figure 1 A structural schematic diagram of a projection device used in this method, the projection device includes an LED light source and a dichroic lens, wherein the LED light source includes a red LED light source 10, a green LED light source 20, a blue LED light source 30 and an excitation LED light source 40, The pulse timing of the red LED light source 10, the green LED light source 20 and the blue LED light source 30 occurs in time division, and a collimating optical element is arranged directly in front of each LED light source; the dichroic lens includes a first dichroic lens 50 and a second dichroic lens 50. Two dichroic lenses 60.

[0037] The first dichroic lens 50 and the second dichroic lens 60 are arranged in parallel, and the first dichroic l...

Embodiment 2

[0068] Different from the above-mentioned embodiments, the color-mixing light-emitting method for increasing projection brightness in this embodiment further includes: setting the current of the LED light source for excitation.

[0069] see Figure 2A , Figure 2A It is the driving signal waveform diagram of the LED light source of the projection device in the prior art. The image has 60 frames per second, and the time axis is 1 / 60 second. The pulse width and height corresponding to each LED light source are different, and the details can be passed through the MCU. Controlled by the controller, the pulse height represents the magnitude of the current, and the color timing of the light source is generally red, green and blue in sequence, corresponding to the output timing of the driving signal of each LED light source.

[0070] see Figure 2B , Figure 2B It shows a driving signal waveform diagram of a projection device applied by this method. The same pulse is used for the ...

Embodiment 3

[0074] The embodiment of the present invention also provides a projection device, please refer to Figure 4 , the projection device includes:

[0075] The LED light source 100, the LED light source 100 includes a red LED light source, a green LED light source, a blue LED light source and an excitation LED light source, wherein the driving signal of the excitation LED light source is the same as any of the red LED light source, the green LED light source, and the blue LED light source. The driving signal of the LED light source is consistent, and the LED light source whose driving signal is consistent with the driving signal of the LED light source for excitation is defined as the designated LED light source;

[0076] The display driver 200 is connected with the LED light source 100, and is used to drive the red LED light source, the green LED light source, and the blue LED light source to light up in time-sharing, and to drive the LED light source for excitation to light up; ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the present invention discloses a color-mixing light-emitting method and a projection device for improving projection brightness, including: a drive signal for a preset excitation LED light source and a drive for any one of a red LED light source, a green LED light source, and a blue LED light source The signals are consistent, and the LED light source whose driving signal is consistent with the driving signal of the LED light source for excitation is defined as the designated LED light source; when the designated LED light source is lit, the LED light source for excitation is also lit at the same time, and the other LED light sources are off, The light emitted by the LED light source is irradiated on the extinguished LED light source through the two-way lens, and the extinguished LED light source is excited to emit light of the corresponding color. The light emitted by the extinguished LED light source is mixed with the light emitted by the designated LED light source and then projected. Through the foregoing manner, the embodiments of the present invention can improve the brightness of the micro projector, and have little impact on the color gamut and power.

Description

technical field [0001] Embodiments of the present invention relate to the field of optical technology, and in particular, to a color-mixing light-emitting method and a projection device for improving projection brightness. Background technique [0002] Brightness is crucial to the projection quality of a micro-projector. Products with higher brightness will have a better display under the same ambient light. At present, the mainstream micro-projection products on the market all use DLP technology and LED light source. Considering the problem of its portable size, the brightness generally cannot reach the level of traditional projectors. Portable micro-projectors are generally between 200 ANSI-500 ANSI, household micro-projectors are generally between 500 ANSI-1000 ANSI, there are basically no micro-projectors with thousands of ANSI, and now the measured brightness of many micro-projectors with LED light sources is generally not high. short board. [0003] There are many re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20H05B33/08H05B44/00
CPCG03B21/2033H05B45/30
Inventor 杨伟樑高志强杨承德张新勇郭胜男
Owner IVIEW DISPLAY SHENZHEN CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com