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Method and system configuration for setting a constant wavelength

A technology of wavelength and wavelength change, applied in the field of correspondingly set system devices, can solve the problems of high logistics expenditure, reducing the acceptance of end-customer optical equipment, and increasing the rejection rate.

Active Publication Date: 2020-10-16
INOVA SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this type of LED must be tested, when the LED can not reach the predetermined target value as a function of temperature, it will lead to an increase in the rejection rate
This situation is particularly unfavorable in the use scene of the car
A particular disadvantage arises here that the installed LEDs cannot be replaced at any time and the end customer has to send his vehicle in for repairs
In addition to meeting the high logistical expenditure, in the state of the art, this drawback also reduces the acceptance of such optical devices by end customers

Method used

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  • Method and system configuration for setting a constant wavelength
  • Method and system configuration for setting a constant wavelength
  • Method and system configuration for setting a constant wavelength

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Embodiment Construction

[0046] figure 1 The left graph of plots the temperature of the LED on the x-axis and the wavelength emitted by the LED on the y-axis. Typically, a constant wavelength is desired, but the disadvantage is that the wavelength varies with temperature. As shown in this figure, the wavelength increases with temperature, causing the observer to perceive an unexpected color change. A similar example for a specific value is shown on the right. The object addressed by the present invention is to compensate for such wavelength variations.

[0047] figure 2 The left graph of shows the current plotted on the x-axis and the wavelength plotted on the y-axis. From here it can be seen that the wavelength is a function of the current, so the wavelength decreases as the current increases. The development of the characteristic curve is likewise shown in the figure on the right, again the wavelength is plotted on the y-axis and the current on the x-axis.

[0048] According to the invention,...

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Abstract

The present invention is directed to a method which allows, with minimal technical expenditure, a constant wavelength of a light emitting diode to be set so that the light emitting diode appears a constant color to the naked eye of a human observer. The present invention is further directed to a correspondingly designed system configuration and to a computer program product having control commandsthat implement the method or operate the system configuration.

Description

technical field [0001] The invention relates to a method by which a constant wavelength in a light-emitting diode can be set with a minimum of technical outlay, so that a constant color of the light-emitting diode is established for a human observer using the naked eye. The invention also relates to a correspondingly arranged system arrangement and to a computer program product comprising control commands for carrying out the method or operating the system arrangement. Background technique [0002] WO 2017 / 162 323 A1 discloses an efficient control device and a control method which can provide a particularly efficient data transmission, especially for light-emitting diode control units. The description also relates to corresponding protocols which cause the control unit to carry out the corresponding method steps. [0003] WP 2017 / 162 324 A1 discloses a method and a device for bidirectional communication between a command unit and a plurality of LED control units connected t...

Claims

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Application Information

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IPC IPC(8): H05B45/28H05B45/18H05B44/00
CPCH05B45/24H05B45/20H05B45/28H05B45/325
Inventor 史坦法·霍夫曼
Owner INOVA SEMICON