{"id":2350,"date":"2025-12-10T03:51:34","date_gmt":"2025-12-10T03:51:34","guid":{"rendered":"https:\/\/lightingrecipe.com\/?p=2350"},"modified":"2025-12-10T03:52:04","modified_gmt":"2025-12-10T03:52:04","slug":"well-v2-lighting-concept-in-depth-analysis-from-l01-to-l09-creating-a-human-centric-healthy-light-environment","status":"publish","type":"post","link":"https:\/\/lightingrecipe.com\/zh\/well-v2-lighting-concept-in-depth-analysis-from-l01-to-l09-creating-a-human-centric-healthy-light-environment\/","title":{"rendered":"WELL v2 Lighting Concept In-Depth Analysis: From L01 to L09, Creating a Human-Centric Healthy Light Environment"},"content":{"rendered":"
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WELL Lighting Concept<\/strong><\/h4>\n\n\n\n


Concept \/ Light \/ Intent<\/strong>
The WELL Light concept promotes appropriate human exposure to light, with the objective of creating lighting environments that support visual, psychological, and physiological health.<\/p>\n\n\n\n

Concept \/ Light \/ Background<\/strong>
Light is the main driver of the visual and circadian systems. Light enters the human body through the eye, where it is sensed by photoreceptors in the retina that are linked to the visual and circadian systems. Humans are diurnal, meaning they are innately prone to wakefulness during the day and sleepiness at night. Light exposure stimulates the circadian system, which starts in the brain and regulates physiological rhythms throughout the body\u2019s tissues and organs, such as hormone levels and the sleep-wake cycle. Disruption or desynchronization of the circadian rhythm has been linked with obesity, diabetes, depression and metabolic disorders.\u00a0<\/sup>Exposure to bright light at night is associated with circadian phase disruption, which in turn can cause negative health effects, such as breast cancer and metabolic and sleep disorders.<\/p>\n\n\n\n

All light\u2014not just sunlight\u2014can influence circadian rhythms. Considering that people spend most of their time indoors, insufficient or inappropriate lighting may cause circadian phase shifts. Research shows that light has positive effects on mood and can alleviate depressive symptoms. Adequate daylight exposure is associated with faster recovery, better cognitive function, and improved work performance.<\/p>\n\n\n\n

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Feature L01: Light Exposure (Prerequisite)<\/strong><\/h4>\n\n\n\n

\u6458\u8981<\/strong>
This feature requires projects to provide appropriate illumination in interior environments through thoughtful daylighting and electric lighting strategies.<\/p>\n\n\n\n

Issue<\/strong>
Humans rely on circadian rhythms, and light is their primary driver. Modern reliance on artificial lighting often reduces daylight exposure, which may lead to depression and impaired cognitive function.<\/p>\n\n\n\n

Approach<\/strong>
Adequate light levels should be provided through architectural design, fa\u00e7ade design, spatial planning, and lighting design. When daylight is insufficient, electric lighting strategies should be used to achieve the required illumination levels.<\/p>\n\n\n\n

Verification Methods<\/strong><\/p>\n\n\n\n

Applicable to all spaces (except dwelling units and guest rooms)<\/span><\/strong><\/p>\n\n\n\n

Option 1: Daylight Simulation (Technical documentation)<\/strong>
The project demonstrates, through computer simulations, that one of the following conditions are achieved:<\/p>\n\n\n\n

a. The total floor area of regularly occupied spaces achieves one of the following targets:<\/p>\n\n\n\n

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b. Common space that has unassigned seating for at least 15% of regular occupants at any given time achieves one of the following targets:<\/p>\n\n\n\n

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Option 2: Interior Layout (Technical Documentation)<\/strong>
The project must meet one of the following requirements:
a. At least 30% of regularly occupied spaces are within a horizontal distance of 6 meters (20 feet) from the building envelope glazing.
b. Common spaces\u00a0have unassigned seating and can accommodate at least 15% of\u00a0regular occupants\u00a0at any given time.\u00a0At least 70% of all seating in these spaces must be within a horizontal distance of 5 meters (16 feet) from the building envelope glazing.<\/p>\n\n\n\n

Option 3: Building Design (Technical Documentation)<\/strong>
The project must meet one of the following requirements:
a. The envelope glazing area is no less than 7% of the regularly occupied floor area.
b. The floor length between opposing walls with envelope glazing does not exceed 20 meters (65 feet), and there are no opaque elements higher than 1.25 meters (4 feet) within a 6-meter (20-foot) horizontal distance from the envelope glazing.<\/p>\n\n\n\n

Option 4: Circadian Lighting Design (Performance Testing)<\/strong>
The project should meet the following requirement:
The project complies with Feature L03, Tier 1: Circadian Lighting Design Thresholds.<\/p>\n\n\n\n

Applicable to Dwelling Units and Guest Rooms<\/span><\/strong><\/p>\n\n\n\n

Option 1: Daylight Simulation (Technical Documentation)<\/strong>
The project demonstrates through computer simulation that The total floor area of regularly occupied spaces of each dwelling unit achieves one of the following targets:<\/p>\n\n\n\n

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Option 2: Fa\u00e7ade Design (Technical Documentation)<\/strong>
The project should meet the following requirement: For each residential unit, the area of building envelope glazing must be no less than 7% of the regularly occupied floor area.<\/p>\n\n\n\n

Option 3: Circadian Lighting Design (Performance Testing)<\/strong>
The project should meet the following requirement: The project achieves at least 1 point in Feature L03: Circadian Lighting Design.<\/p>\n\n\n\n

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Feature L02: Visual Lighting Design (Prerequisite)<\/strong><\/h4>\n\n\n\n

\u6458\u8981<\/strong>
This feature requires projects to provide illuminance levels suitable for work surfaces for users of all ages, considering the lighting levels necessary to perform tasks.<\/p>\n\n\n\n

Issue<\/strong>
As people age, their eyes require more light. Inadequate lighting can affect visual performance and comfort.<\/p>\n\n\n\n

Approach<\/strong>
Refer to recommendations from lighting associations or authoritative organizations to develop lighting strategies appropriate for different ages and tasks.<\/p>\n\n\n\n

Verification Methods<\/strong><\/p>\n\n\n\n

Applicable to all spaces (except Dwelling units)<\/span><\/strong><\/p>\n\n\n\n

Option 1: Visual Lighting Design (Technical Documentation + Performance Testing)<\/strong>
a. All indoor and outdoor spaces (including transition areas) comply with the illuminance thresholds specified in one of the following lighting reference guidelines:<\/p>\n\n\n\n