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High-efficiency double-color dimming LED street lamp based on mesopic vision

A technology of LED street lamps and mesovision, applied in the field of mesovision, can solve problems such as failure to reach, and achieve the effect of improving efficiency

Active Publication Date: 2020-07-10
LUOYANG INST OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although cie experts have not given an accurate intermediate vision function curve so far, that is to say, although the illuminance of LED street lights at night has improved, it has not yet reached the level of multiples of s / p ratio. In order to be close to practical applications, m / p ratio is the measurement standard, that is, the ratio of intermediate vision and photopic vision. The calculation formula of intermediate vision m is m=(s+p) / 2

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  • High-efficiency double-color dimming LED street lamp based on mesopic vision

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Embodiment Construction

[0013] Attached below Figure 1-2 , a specific embodiment of the present invention will be described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0014] Table 1 below shows that after the LED with a color temperature of 3000K and cyan light (dominant wavelength 500-510nm) LED are mixed with a lumen output ratio of 6:1, the color temperature CCT increases to 4000K, and the m / p ratio increases from 1.11 to 1.37. The m / p ration of directly using 4000K white LEDs is 1.3. When this kind of street lamp is used for night lighting, its brightness is higher than that of directly using 4000K white LEDs. It also improves the color rendering index of the lamps and improves its The ability to reflect the original color of the actual object at night.

[0015] Table 1 Performance comparison between LED ordinary street lamps and blue / white LED two-color mixed light street lamps

[0016]

[0017] The...

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Abstract

The invention relates to the technical field of mesopic vision and discloses a high-efficiency double-color dimming LED street lamp based on mesopic vision. A plurality of white-light LEDs and a plurality of blue-green-light LEDs are mixed according to the proportion of 5: 1-10: 1, the main wavelength of the blue-green-light LEDs is 500-510 nm, the color temperature range of the white-light LEDs is 3000-4000 k, and the color rendering index of the white-light LEDs is 65-80; and the lumen output ratio of the white light LED to the blue-green-light LED is 4: 1-8: 1. The efficiency of the streetlamp is greatly improved on the premise that the same brightness is provided for pedestrians at night by the high-efficiency double-color dimming LED street lamp based on mesopic vision.

Description

technical field [0001] The invention relates to the technical field of mesovision, in particular to a high-efficiency two-tone dimming LED street lamp based on mesovision. Background technique [0002] Two types of cone cells and columnar cells contained in the human eye function under photopic and scotopic conditions respectively. The different spectral response characteristics of the two cells determine the spectral vision efficiency curve of the human eye under the two conditions. from figure 1 It can be seen that the peak value of the scotopic light effect curve is around 507nm, while the photopic light effect curve reaches the highest point at 555nm. Ordinary optical instruments are used for photosensitive measurement under photopic conditions, while street lamps are used for night lighting, and their brightness distribution should fall within the range of intermediate vision (0.01~3cd / cm2), so the brightness claimed by street lamps is only reflected in photopic condit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V19/00F21W131/103F21Y115/10
CPCF21S8/00F21V19/001F21W2131/103F21Y2115/10
Inventor 李亚利郭超王波葛运旺任亚飞
Owner LUOYANG INST OF SCI & TECH
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