JP2015032504A5

JP2015032504A5 -

Info

Publication number: JP2015032504A5
Application number: JP2013162482A
Authority: JP
Filing date: 2013-08-05
Publication date: 2016-09-23
Anticipated expiration: 2033-08-05

Description

本発明は、個別に発光量を調節可能な複数の光源と、
前記光源からの光を測定するセンサと、
測定対象の光源が点灯し測定対象でない光源が消灯した状態で前記センサから出力される測定値に基づき当該測定対象の光源の光学特性を測定する測定手段と、
前記光源の発光を制御する制御手段と、
を備え、
前記制御手段は、測定対象でない光源と前記センサとの距離に応じた順序で、測定対象でない光源を消灯させることを特徴とする発光装置である。 The present invention includes a plurality of light sources capable of individually adjusting the light emission amount,
A sensor for measuring light from the light source;
A measuring means for the light source to be measured to measure the optical characteristics of the measurement target light source based on a measurement value output from the sensor in a state where the light source is not lit up and the measurement target is turned off,
Control means for controlling light emission of the light source;
With
The control unit is a light-emitting device that turns off a light source that is not a measurement target in an order corresponding to a distance between the light source that is not a measurement target and the sensor.

本発明は、個別に発光量を調節可能な複数の光源と、
前記光源からの光を測定するセンサと、
を備える発光装置の制御方法であって、
測定対象の光源が点灯し測定対象でない光源が消灯した状態で前記センサから出力される測定値に基づき当該測定対象の光源の光学特性を測定する測定工程と、
前記光源の発光を制御する制御工程と、
を有し、
前記制御工程では、測定対象でない光源と前記センサとの距離に応じた順序で、測定対象でない光源を消灯させることを特徴とする発光装置の制御方法である。 The present invention includes a plurality of light sources capable of individually adjusting the light emission amount,
A sensor for measuring light from the light source;
A method for controlling a light emitting device comprising:
A measuring step in which the light source to be measured to measure the optical properties of the illuminated light source of the measuring object based on a measurement value in which the light source is not to be measured is outputted from the sensor in a state of being turned off,
A control step of controlling light emission of the light source;
Have
In the control step, the light source that is not the measurement target is turned off in the order corresponding to the distance between the light source that is not the measurement target and the sensor.

Claims

Multiple light sources that can individually adjust the amount of emitted light,
A sensor for measuring light from the light source;
A measuring means for the light source to be measured to measure the optical characteristics of the measurement target light source based on a measurement value output from the sensor in a state where the light source is not lit up and the measurement target is turned off,
Control means for controlling light emission of the light source;
With
The light-emitting device, wherein the control unit turns off the light source that is not the measurement target in an order corresponding to the distance between the light source that is not the measurement target and the sensor.

2. The light emission according to claim 1, wherein the control unit performs a turn-off process of turning off a light source that is not a measurement target in order from a light source close to the sensor, thereby turning on only the light source that is the measurement target and turning off the light source that is not the measurement target. apparatus.

It has multiple sensors with different positional relationships with each light source,
Corresponding to each light source, a sensor for obtaining a measured value when the measuring means measures optical characteristics is determined,
The light-emitting device according to claim 2 , wherein in the turn-off process, the control unit turns off a light source that is not a measurement target in order from a light source close to a sensor that acquires a measurement value.

When there are a plurality of light sources having the same distance from the sensor that acquires the measurement value among the light sources to be turned off in the turn-off process, the control unit preferentially turns on the light source that is turned on at the start of the turn-off process. The light emitting device according to claim 3 , wherein the light emitting device is turned off.

The light emitting device is a backlight that irradiates light to a display panel that displays an image by modulating light from the light emitting device according to an image signal,
When there are a plurality of light sources having the same distance from the sensor that obtains the measurement value among the light sources to be turned off in the turn-off process, the control unit turns off the lights preferentially based on the scanning direction of the display panel. The light emitting device according to claim 3 or 4 , wherein a light source is determined.

The light source is a light source capable of adjusting the light emission amount by adjusting the length of the lighting period and the extinguishing period, and the timing of the lighting period and the extinguishing period is predetermined for each light source,
Wherein, in the predetermined lighting period of the measurement target light source, as the acquisition of measured values from the sensor by the measuring means is carried out, any of claims 3-5 for starting the extinction process The light emitting device according to claim 1.

The light emitting device is a backlight of an image display device,
The control means controls light emission for each light source array composed of a plurality of light sources arranged in the horizontal direction of the screen, and in the extinguishing process, the control unit sequentially turns off the light source array close to the sensor that acquires the measurement value. The light emitting device according to any one of 3 to 6 .

An acquisition means for acquiring information on the distance between each light source and each sensor;
The control means acquires information on the distance between each light source and a sensor that acquires a measurement value by the acquisition means, and determines the order in which light sources that are not measurement targets are turned off based on the information. the light emitting device according to any one of claims 3-7.

Said measuring means, after turning off process by said control means is completed, wait until the sensor for acquiring the measurement value is returned from the saturated state, any one of claims 3-8 for obtaining measurements from the sensors 1 The light emitting device according to item.

The measurement unit acquires the measurement value from the sensor when the extinguishing process is completed when the sensor that obtains the measurement value is restored from the saturated state when the extinguishing process by the control unit is completed. Item 9. The light emitting device according to any one of Items 3 to 8 .

An image display device comprising the light emitting device according to any one of claims 1 to 10 as a backlight.

Multiple light sources that can individually adjust the amount of emitted light,
A sensor for measuring light from the light source;
A method for controlling a light emitting device comprising:
A measuring step in which the light source to be measured to measure the optical properties of the illuminated light source of the measuring object based on a measurement value in which the light source is not to be measured is outputted from the sensor in a state of being turned off,
A control step of controlling light emission of the light source;
Have
In the control step, the light source that is not the measurement target is turned off in the order corresponding to the distance between the light source that is not the measurement target and the sensor.

The light emission according to claim 12, wherein in the control step, a light source that is not a measurement target is turned off in order from a light source close to the sensor to turn off only the light source that is the measurement target and the light source that is not the measurement target is turned off. Device control method.

It has multiple sensors with different positional relationships with each light source,
Corresponding to each light source, a sensor for obtaining a measurement value when measuring optical characteristics in the measurement step is determined,
The light-emitting device control method according to claim 13 , wherein, in the control step, the light source that is not a measurement target is turned off in order from a light source close to a sensor that acquires a measurement value in the light-off process.

In the control step, if there are a plurality of light sources having the same distance from the sensor that acquires the measurement value among the light sources to be turned off in the turn-off process, the light source that is turned on at the start of the turn-off process is given priority. The method for controlling the light emitting device according to claim 14 , wherein the light emitting device is turned off.

The light emitting device is a backlight that irradiates light to a display panel that displays an image by modulating light from the light emitting device according to an image signal,
In the control step, when there are a plurality of light sources having the same distance from the sensor that acquires the measurement value among the light sources to be turned off in the turn-off process, the light is turned off with priority based on the scanning direction of the display panel. The method for controlling a light emitting device according to claim 14 or 15 , wherein a light source is determined.

The light source is a light source capable of adjusting the light emission amount by adjusting the length of the lighting period and the extinguishing period, and the timing of the lighting period and the extinguishing period is predetermined for each light source,
In the control step, in a predetermined lighting period of the measurement target light source, as the acquisition of measurements from the sensor in the measurement step is performed, any of claims 14 to 16 for initiating the off processing A method for controlling the light emitting device according to claim 1.

The light emitting device is a backlight of an image display device,
In the control step, the light emission is controlled for each light source array composed of a plurality of light sources arranged in the horizontal direction of the screen, and in the extinguishing process, the light source array close to the sensor that acquires the measurement value is sequentially turned off. control method of a light-emitting device according to any one of 14-17.

An acquisition step of acquiring information on the distance between each light source and each sensor;
In the obtaining step, information on the distance between each light source and a sensor for obtaining a measurement value is obtained,
The method for controlling a light emitting device according to any one of claims 14 to 18 , wherein, in the control step, an order in which light sources that are not measurement targets are turned off is determined based on the information.

Wherein the measuring step, after the turning off process in the control process is completed, wait until the sensor for acquiring the measurement value is returned from the saturated state, any one of claims 14 to 19 for obtaining measurements from the sensors 1 A method for controlling the light emitting device according to item.

In the measurement step, when a sensor that obtains a measurement value has returned from a saturated state when the extinguishing process in the control step is completed, the measurement value is obtained from the sensor when the extinguishing process is completed. Item 20. The method for controlling a light emitting device according to any one of Items 14 to 19 .