Patent ID: 11953648
Assignee: KEYENCE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  F | IPC G

Claim 0:
1. Alight curtain comprising:
a housing in which one element of a pair of a light projecting element and a light receiving element forming a plurality of optical axes is disposed inside along a longitudinal direction in order to form the plurality of optical axes at intervals, the housing including a metal case extending in the longitudinal direction and end members connected to both ends of the metal case;
a cover that transmits light from the light projecting element and is attached to the housing so as to cross the plurality of optical axes;
an indicator lamp that is a light diffusing member disposed outside an outer surface of at least one of the cover and the housing along the longitudinal direction or formed in series with the cover; and
an indicator lamp light source that is accommodated in the housing and supplies light for displaying toward the indicator lamp.