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How can you reduce eye strain with spacecraft lighting?

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Eye strain is a common problem for astronauts who spend long hours in front of screens, monitors, and instruments. It can affect their performance, health, and well-being. How can you reduce eye strain with spacecraft lighting? In this article, you will learn some systems engineering principles and practices that can help you design and optimize lighting systems for space missions.

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1 Lighting Requirements

Spacecraft lighting systems must meet several requirements, such as providing adequate illumination, visibility, contrast, color, and safety. They must also be compatible with the electrical, thermal, and structural aspects of the spacecraft. Additionally, they must consider the human factors and ergonomics of the crew, such as their circadian rhythms, mood, alertness, and comfort.

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Gary M. Moore

RF Engineer
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Switch white lights off , and red lamps on , during sleeping hours. Red lamps help the human eye to toggle between full color vision, to simple black-and-white cone vision.

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2 Lighting Sources

There are different types of lighting sources that can be used in spacecraft, such as incandescent, fluorescent, light-emitting diode (LED), and electroluminescent (EL) lamps. Each type has its advantages and disadvantages in terms of efficiency, durability, reliability, and cost. For example, incandescent lamps are cheap and easy to replace, but they consume more power and generate more heat than LED lamps. LED lamps are more energy-efficient and have a longer lifespan, but they can produce glare and flicker that can cause eye strain.

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Larry Keese

Chief Scientist Systems Architect
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Human factors Engineers are extremely important in the solution of such matters as circadian rhythms and day/night and sleep/waking needs!

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3 Lighting Design

Lighting design is the process of selecting, arranging, and controlling the lighting sources to create a suitable environment for the crew. It involves balancing the quantity, quality, and distribution of light to achieve the desired effects. Some factors that influence lighting design are the size, shape, and layout of the spacecraft, the tasks and activities of the crew, the time of day and night, and the preferences and needs of the crew.

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4 Lighting Control

Lighting control is the system that allows the crew to adjust the lighting levels, colors, and modes according to their needs and preferences. It can be manual, automatic, or adaptive. Manual control gives the crew the freedom to choose their own settings, but it can be tedious and inconsistent. Automatic control uses sensors, timers, or algorithms to regulate the lighting based on predefined criteria, but it can be rigid and inflexible. Adaptive control uses feedback from the crew or the environment to modify the lighting dynamically, but it can be complex and expensive.

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5 Lighting Evaluation

Lighting evaluation is the method of assessing the effectiveness, efficiency, and satisfaction of the lighting system. It can be done before, during, or after the mission using various tools and techniques, such as surveys, interviews, observations, measurements, simulations, or experiments. The purpose of lighting evaluation is to identify the strengths and weaknesses of the lighting system, to compare different alternatives, and to suggest improvements or modifications.

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6 Lighting Recommendations

When designing spacecraft lighting, systems engineering principles and practices can help reduce eye strain. LED lamps with adjustable brightness, color temperature, and flicker rate should be used, and lighting zones should be designed to match the functions and moods of the spacecraft. Additionally, lighting settings should be tailored to the preferences and needs of the crew, allowing for manual control for personal choice, automatic control for convenience and consistency, and adaptive control for flexibility and responsiveness. Finally, lighting performance should be evaluated to measure illumination, visibility, contrast, color, as well as surveying the satisfaction, comfort, and well-being of the crew. Additionally, reliability, durability, and safety of the lighting should be tested.

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Ruben Humberto Perea

Energía & Agua & Tierra
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Las lámparas LED tienen la ventaja de ser adaptables en cuanto a brillo, temperatura de color y si se alimenta con corriente continua, carece de parpadeos.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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How can you reduce eye strain with spacecraft lighting?

1

2

3

4

5

6

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1 Lighting Requirements

2 Lighting Sources

3 Lighting Design

4 Lighting Control

5 Lighting Evaluation

6 Lighting Recommendations

7 Here’s what else to consider

Systems Engineering

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How can you reduce eye strain with spacecraft lighting?

1

2

3

4

5

6

7

1 Lighting Requirements

2 Lighting Sources

3 Lighting Design

4 Lighting Control

5 Lighting Evaluation

6 Lighting Recommendations

7 Here’s what else to consider

Systems Engineering

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