Translation guide
A lens or tool used to make things look larger. In Japanese, the most common word is 虫眼鏡 (mushimegane), but other terms exist for specific contexts.
magnifying glass
A handheld lens for examining small objects or reading fine print.
The standard, everyday word for a magnifying glass. Literally 'bug glasses', but used for any magnifying lens.
I read the small text with a magnifying glass.
This magnifying glass has high magnification.
From German 'Lupe'. Often used for jeweler's loupes, watchmaker's loupes, or small high-quality magnifiers. Slightly more technical feel.
Examine gems with a loupe.
Literally 'magnifying mirror/lens'. More formal or technical term, used in product names or descriptions.
I bought a stand mirror with a magnifying mirror.
Referring to the icon or concept of a magnifying glass, often in UI or metaphorical contexts.
For almost all everyday situations, 虫眼鏡 is the best choice. It's understood by everyone and doesn't sound childish or technical.
Sometimes used in formal UI descriptions, but 虫眼鏡 is more natural.
Please click the magnifying glass icon.