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Illuminating apparatus

A lighting device and computing unit technology, applied to lighting devices, lamp circuit layout, light sources, etc., can solve the problems of not being able to illuminate objects with white, single color light, and not being able to have multiple bright colors

Inactive Publication Date: 2010-08-18
TOSHIBA LIGHTING & TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the neodymium light bulb and the lamp described in Japanese Patent No. 3040719 cannot make the multiple colors contained in the illuminated object bright because they always illuminate the object with a single color light.
In addition, the neodymium bulb and the lamp described in Japanese Patent No. 3040719 cannot respond to changes in the illuminated object.
[0008] In addition, for example, when an object is illuminated with light of a single color, if the illuminated object is a white object such as tableware, there is also a problem that the white object looks colored and does not look white.

Method used

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Effect test

no. 1 approach

[0082] FIG. 1 is a block diagram showing a lighting device according to a first embodiment of the present invention. It shows the structure in which each block is arranged in order of operation.

[0083] The lighting device of the first embodiment shown in FIG. 1 has: a light source unit 14 capable of irradiating at least red, green, and blue lights; an image sensor 11 that photographs the illuminated object; position and color of each part of the object in the captured image, and calculate the distribution of the color corresponding to the position on the object; to control the color light of the light source unit 14.

[0084] With the above configuration, it is possible to realize a lighting device in which an object to be illuminated is photographed by the image sensor 11, the position and color of each part of the object in the captured image are detected and calculated, and the light source unit 14 is controlled to Make multiple colors contained in each part of the obje...

no. 2 approach

[0095] A block diagram of a lighting device according to a second embodiment of the present invention is the same as that in FIG. 1 .

[0096] The lighting device of the second embodiment has: a light source unit 14 capable of irradiating at least red, green, and blue light; an image sensor 11 that photographs the illuminated object; The color of the object is determined by the color contained in the object most; the control unit 13 controls the color light of the light source unit 14 in order to produce the light color determined by the calculation unit 12 .

[0097] With the above configuration, it is possible to realize a lighting device in which an object to be illuminated is photographed by the image sensor 11, the color of the object is detected and calculated, and which color component is contained in the plurality of colors contained in the object is detected. More often, the light source unit 14 is controlled so that the color looks vivid and attractive.

[0098] In ...

no. 3 approach

[0108] A block diagram of a lighting device according to a third embodiment of the present invention is the same as that in FIG. 1 .

[0109] The lighting device shown in the third embodiment has: a light source unit 14 capable of irradiating at least red, green, and blue lights; an image sensor 11 that photographs the illuminated object; The R, G, and B grayscale values ​​of each pixel in the image calculate the light mixing ratio of the light source unit 14 according to the grayscale value; the control unit 13 controls the color light of the light source unit 14 in order to reproduce the light mixing ratio determined in the calculation unit 12 .

[0110] The light source unit 14 is composed of a light source that mixes and irradiates at least three colors of red, green, and blue light.

[0111] The image sensor 11 has RGB color filters.

[0112] The RGB grayscale value of each pixel of the image captured by the image sensor 11 is a value from 0 to 255, and when all of R, G...

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Abstract

An illuminating apparatus is provided with an image sensor (11), a calculating section (12), a control section (13) and a light source section (14). The light source section (14) can output at least red, green and blue lights. The image sensor (11) photographs an object illuminated by the light source section. The calculating section (12) calculates color components distributed over the object, based on the photographed image. The control section (13) controls the color light of the light source section in accordance with the color components which are distributed over the object and are obtained by the calculating section.

Description

technical field [0001] The present invention relates to lighting devices for making the colors of objects appear more vivid. Background technique [0002] It is well known that the color of fresh meat, fresh fish, etc. is brightened by removing the yellowish yellow color of fresh meat, fresh fish, etc., thereby having the effect of looking fresh. For this reason, neodymium bulbs in which neodymium is mixed into the bulb of an incandescent lamp are already sold from various lighting manufacturers in order to absorb light emission energy around 580 nm (yellow component). It is known that this effect is equivalent to other lighting lamps such as fluorescent lamps. [0003] Here, as a conventional method for quantitatively evaluating the color rendering properties (visuality of rendered colors) of lighting lamps, there is a "method for evaluating the fidelity of the visual degree of color". [0004] This method is a method for quantitatively evaluating the fidelity of the colo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCH05B33/0863H05B45/20H05B47/10
Inventor 石渡朋子
Owner TOSHIBA LIGHTING & TECH CORP
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