What is the lighting effect of insulated glass
Information summary：The overall lighting effect of insulated glass is excellent and controllable. Its core advantage lies in "light transmission without perspective (optional), balancing energy saving and lighting". The specific performance needs to be comprehensively judged based on the type of glass original, structural design, and application scenarios. The following analysis will be conducted from key influencing
The overall lighting effect of insulated glass is excellent and controllable. Its core advantage lies in "light transmission without perspective (optional), balancing energy saving and lighting". The specific performance needs to be comprehensively judged based on the type of glass original, structural design, and application scenarios. The following analysis will be conducted from key influencing factors, actual effects, comparative advantages, and applicable scenarios:
1、 The core factors affecting the lighting effect of insulated glass
The lighting capacity of insulating glass is mainly determined by the transmittance of the glass substrate (the insulating layer itself is air or inert gas, which does not directly block light), and is also affected by additional functional layers (such as Low-E film), glass color, etc. It can be divided into two categories:
1. Basic transparency type: high transparency design
If ordinary white glass (transparent float glass) is used as the original sheet, the transmittance of insulating glass is similar to that of single white glass. The specific data is as follows:
Single piece ordinary white glass transmittance: about 85%~90% (visible light transmittance, which refers to the light that can be perceived by the human eye);
Ordinary insulated glass (double white glass+air layer): The transmittance is about 80%~88% (only due to the sealing of the glass edge and slight refraction of the air layer, a small amount of light is lost, which hardly affects daily lighting).
The lighting effect of this type of insulated glass is not significantly different from traditional single piece glass, and it can introduce natural light, making it suitable for scenes with high lighting requirements (such as living rooms, study rooms, and sunrooms).
2、 The core advantage of insulated glass daylighting: dual advantages of "daylighting+energy saving"
Compared to single pane glass or ordinary double-layer glass, the lighting advantage of insulated glass lies not only in "controllable light transmittance", but also in "no waste of lighting" - through the hollow layer and functional coating, it can "introduce useful light and block harmful light":
1. Filter harmful light and retain useful light
Most insulated glass (especially those with Low-E film or anti UV layer) can block 50% to 90% of infrared radiation (reducing heat intake and keeping summer cool) and ultraviolet radiation (protecting skin and furniture from fading), but it blocks less visible light (the lighting light needed by the human eye), achieving "no sun exposure, energy-saving and no darkness".
2. More uniform lighting to reduce glare
If frosted, embossed, or low transparency Low-E raw materials are used, insulated glass can soften strong light (such as noon sunlight) and avoid the "glare" that glass is prone to (visual discomfort caused by direct light), especially suitable for scenarios such as office areas and bedrooms that require high light comfort.
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