This lecture mainly introduces ten theories about light, which may be obvious but often overlooked when the teacher talks about them.
Our eyes are designed to use light, not to look at it directly.
This is explaining our “contact” with light, not directly. Because sometimes light can be physical, too intense, and dazzling can hurt our eyes. Therefore, in the design of indoor lighting, we should consider how to avoid high-intensity lighting directly into the human eye.
We need to pay attention to the non-Visual Effects of light.
The effects of light on us are not only physically observable by visual cells, light also regulates several nonvisual processes such as sleep and circadian rhythms, melatonin secretion, pupillary light reflex, alertness, autonomic arousal, mood, brain activity, and cognitive
performance. (Sentences from the lecture.)
The light/ dark cycle can affect pulse rate, blood pressure, growth, reproductive hormones, and emotional receptors.
For example, when you are in class, the lighting design will be completely different from the lighting design in the airport terminal.
We need to consider customers, targeted at different age groups or people with different eye colors.
Our vision can be affected by aging and yellowing lenses, color vision, and differences in light absorption. At the same time, people with different pupil colors also have different sensitivity to light.
Don’t cause light pollution.
Please don’t overuse lights. A lamp can provide a range of light sources beyond your imagination: including, but not limited to, the part needed, the part reflected into the sky and the trespass area.
We need to think about the purpose of lighting from the root. Why is that? Is it necessary?
The type of light, Angle, intensity, color, and other factors will affect the visual experience.
Use light controls.
When we face a large number of light sources, how should we classify, how to control them? The lights in an office building cannot be turned off one by one.
Pursue a people-oriented design concept.
Patients living in hospitals can recover better with access to natural light. Lighting in a home does not need to be as intense as in a shopping mall.
Take solar tracks into account.
Both the Parthenon and the courseware demonstrate the importance of daylight in interior design. Light design is not limited to artificial light.
Think about the color of light.
The color of daylight varies throughout the day. From sunrise to morning time, the color of light is about 2000k-4000k while from morning to afternoon is about 4500k-6500k.
We also need to think about the effects of blue light: Blue light plays a role in governing circadian rhythms that poses a greater concern for public health.
Consider more possibilities of light.
Traditionally, lights are used for lighting or heating. We need to pursue more of the potential of light: to express emotions or convey emotions/ideas, it has unlimited potential.
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