Translation guide
A diffuser is a device that spreads something out, such as light, sound, air, or scent. This guide covers common Japanese terms for different types of diffusers.
A device that disperses essential oils or fragrance into the air.
The most common and direct term for an aroma diffuser. Widely understood.
I enjoy the scent of lavender with an aroma diffuser.
Literally 'ultrasonic humidifier'. Many aroma diffusers are also ultrasonic humidifiers. Use this if the device primarily functions as a humidifier.
This ultrasonic humidifier can also be used with aromas.
A more technical term meaning 'fragrance diffuser'. Used in product descriptions or specifications.
We installed a commercial fragrance diffuser.
A device or material that spreads light evenly, reducing harsh shadows or glare.
The loanword 'diffuser' is commonly used in photography and lighting contexts.
I attach a diffuser to the flash to soften the light.
Literally 'diffusion plate'. Used for flat panels or sheets that diffuse light, such as in LCD backlights or studio lighting.
Specifically 'light diffusion film'. Used in technical or manufacturing contexts.
A device or structure that scatters sound waves to improve acoustics in a room.
A vent or grille that distributes conditioned air into a room.
An attachment for a hair dryer that spreads the airflow to dry curly or wavy hair gently.
The standard term in hair care. Often used as ヘアドライヤー用ディフューザー.
Using a diffuser brings out nice curls.
We installed a diffusion plate in front of the LED panel.
This light diffusion film reduces uneven brightness on displays.
このディフューザーは中高域の拡散に効果的です。
This diffuser is effective for diffusing mid-high frequencies.
This air diffuser allows airflow adjustment.