Translation guide
The English term 'blind spot' can refer to a physical area you cannot see, a subject you are ignorant about, or a technical anatomical/optical point. This guide covers natural Japanese expressions for each meaning.
Express an area around a vehicle or in your field of vision that is not visible.
The most common and direct translation for 'blind spot' in driving and general physical contexts. Used for vehicle blind spots, security camera blind spots, etc.
There was a bicycle in the car's blind spot.
This camera has a blind spot.
A more casual, descriptive phrase meaning 'place you can't see'. Less technical than 死角.
Watch out for blind spots.
Describe a topic, field, or aspect that someone lacks knowledge or awareness of.
Literally 'blind point', used metaphorically for a gap in one's knowledge or awareness. Common in phrases like 盲点をつく (to exploit a blind spot).
That was a blind spot in his knowledge.
A plain, direct way to say 'something one doesn't know'. Less idiomatic but easily understood.
He has many blind spots.
Refer to the optic disc or the point in the eye with no photoreceptors.
They caught me off guard (exploited my blind spot).
The optic disc is also called the blind spot.