Discharge light and lighting device

A technology for discharge lamps and fluorescent lamps, applied to parts of gas discharge lamps, etc., can solve problems such as deterioration of whiteness, poor visibility, difficulty in distinguishing similar colors, etc., and achieve good discrimination and good whiteness

Inactive Publication Date: 2006-04-12
PANASONIC CORP
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AI Technical Summary

Problems solved by technology

If you give an example, even if there is a lamp that mainly emits three kinds of blue, green, and red lights with a high color rendering rating that faithfully reproduces colors, the yellow light of the light color is slightly stronger, and the visibility on Japanese skin is poor. There is a problem with satisfactory color visibility of the new tatami due to the macula looking like the old tatami
In addition, white things such as newspapers or white shirts cannot be seen as white, that is, there is a problem of deterioration of whiteness
In addition, in conventional lamps in the low color temperature region, color visibility deteriorates, so there is also a problem in color recognition, that is, it is difficult to distinguish similar colors from other light colors.

Method used

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  • Discharge light and lighting device
  • Discharge light and lighting device

Examples

Experimental program
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Effect test

Embodiment Construction

[0047] Next, an experiment for obtaining a more satisfactory chromaticity range of a visible light color of a colored object by using light from a low-color-temperature light source will be described sequentially.

[0048] First of all, the color discrimination (recognition) experiment was carried out under different light colors of the light source with the color frequently used in the house as the object. In the experiment, black and navy blue, red, blue, and green were performed using different methods of judging the colors of the color chart as objects by changing the color difference among representative colors frequently used in houses. Etc. easy distinction.

[0049] figure 2 It shows the experimental results of the simple distinction between black and navy blue. It can be seen that if the light color of the light source is on the CIE1960uv chromaticity diagram with the chromaticity point (u, v) = (0.224, 0.330) as the center, the long axis is 0.056, Within the range...

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Abstract

The invention provides a discharge lamp and a lighting fixture capable of improving coloration of objects of various colors under its illumination and emitting light which scarcely annoys an user with its glaringness and whose color hardly makes the user feel strangeness when being used in conjunction with an incandescent lamp. The chromaticity point (u,v) is in a region of an ellipsoid whose center locates at a chromaticity point (0.224,0.330), (0.224,0.330), (0.235,0.335), (0.225,0.330) and forms different angle according to different length axis, short axis and u-axis, also, a region on a side of color temperature lower than an isotemperature line of a correlated color temperature of 3500K.

Description

technical field [0001] The present invention relates to discharge lamps and lighting fixtures. Background technique [0002] At present, the quality of the color visibility produced by various light sources is determined according to the quantitative evaluation method of the color reproduction evaluation number. However, this method is a method of quantitatively evaluating how faithfully the color is reproduced by comparing the target light with the reference light. Recently, in addition to fidelity, the degree of satisfaction of color visibility is becoming noticeable, how to satisfactorily illuminate the color of human skin and the colors that exist in living spaces such as food, plants, interior decoration, clothes, etc. Be the point. [0003] Currently, in the field of house and shop lighting, discharge lamps for general lighting with a relatively high color temperature of about 5000K to about 7000K are often used as main lighting. However, in order to make the illumi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/44
CPCH01J61/44
Inventor 森利雄东亨田中裕美武内彻二向健二柴田治男金谷末子岩间克昭
Owner PANASONIC CORP
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