The area that one can see with the eyes without moving the head or the eyes; the visual field.
example
Als ich um die Ecke bog, trat plötzlich ein Radfahrer in mein Blickfeld.
As I turned the corner, a cyclist suddenly entered my field of vision.
Usage tips
Compound word
The word is made up of 'der Blick' (the gaze/look) and 'das Feld' (the field). So it literally means a 'field that one takes in with one's gaze.' This logic helps you understand both the literal and the figurative meaning.
EXAMPLE
Ein Reh trat aus dem Wald in mein Blickfeld.
A deer stepped out of the forest into my field of vision.
Prepositions and cases
Pay attention to the prepositions: movement into the area is expressed with 'ins Blickfeld' (accusative). A position within the area is described with 'im Blickfeld' (dative). Movement out of it with 'aus dem Blickfeld' (dative).
EXAMPLE
Der Läufer kam langsam ins Blickfeld.
The runner slowly came into view.
Context clue
The literal meaning refers to physical seeing. The figurative meaning refers to attention and interest. When the context mentions 'Öffentlichkeit' (the public), 'Forschung' (research), or 'Ermittlungen' (investigations), the figurative meaning is almost always intended.
EXAMPLE
Das Thema ist in den letzten Jahren stark ins Blickfeld der Forschung gerückt.
In recent years, the topic has moved strongly into the focus of research.
Compare with
near_synonym · confusable
Blickfeld vs Aufmerksamkeit
attention
'Aufmerksamkeit' and 'Blickfeld' can both be used figuratively for what someone notices or considers important. 'Aufmerksamkeit' describes active concentration on something. 'Blickfeld' refers more to the area that even comes into someone's perception or interest. So something can first come 'ins Blickfeld' (into focus) and then receive attention. The words can be confused because both can express that a topic is becoming important. 'Aufmerksamkeit' is more natural when someone is really concentrating. 'Blickfeld' fits better when a topic, problem, or person is first being noticed at all.
Blickfeld
Durch den Zeitungsartikel rückte das Problem im Park wieder ins Blickfeld der Stadt.
Because of the newspaper article, the problem in the park came back into the city's focus.
Aufmerksamkeit
Meine Mutter richtet ihre Aufmerksamkeit auf die Pflanzen, weil einige Blätter gelb werden.
My mother turns her attention to the plants because some of the leaves are turning yellow.