Blinkfrekvenser

Blinkfrekvenser refers to how often something blinks per unit time, usually measured in hertz (blinks per second). The term is used in both biological contexts, describing the blinking rate of humans or animals, and technical contexts, describing the on-off cycling of light sources such as LEDs or signaling devices.

In humans, spontaneous blinking occurs at an average rate of about 12–20 blinks per minute (roughly 0.2–0.3 Hz). Blink rate varies with factors such as attention, fatigue, environmental conditions, and ocular surface health. Abnormal or highly variable blink frequencies can be indicators of dryness, fatigue, or certain medical conditions.

In electronics and display engineering, blinkfrekvenser describes how frequently an indicator lamp or display element turns on and off. To avoid perceivable flicker, designers aim for frequencies above the perceptual flicker fusion threshold, commonly around 60 Hz or higher, though exact values depend on brightness, color, contrast, and observer conditions. At lower frequencies flicker can be visible and potentially distracting or uncomfortable.

Measurement and analysis of blinkfrekvenser can be performed with high-speed video, photodiodes, or light sensors, with data processed to identify blinking events and compute blinks per second. For human blink studies, simple observational methods may suffice, while technical applications require precise timing and synchronization with other signals.

Applications and relevance span user comfort in displays and interfaces, automotive and aviation signaling, and clinical or ergonomic contexts where blink patterns inform health, fatigue, or ocular surface status.