Light curtain protection system featuring a passive optical module

A light curtain protection system for monitoring a protected field of view, the light curtain protection system comprising:

• an active optical module having an emitter and a receiver, the emitter and the receiver disposed adjacent to each other to form a transceiving pair;
• a passive optical module configurable to be separated from the active optical module by a detection field, and optically aligned with the active optical module to receive an incident light signal from the active optical module and return a reflected light signal to the active optical module, the passive optical detection module comprising:
• a first mirror and a second mirror adapted to align with the active optical module, wherein the first mirror is adapted to redirect the incident light signal towards the second mirror, and the second mirror is adapted to redirect the redirected incident light signal to form the reflected light signal;
• a polarization control module adapted to impart a first predetermined polarization to the reflected light signal such that the reflected light signal received by the receiver corresponds to a second predetermined polarization;
• and,
• a first optical barrier and a second optical barrier having a respective first optical aperture and second optical aperture, wherein the incident light signal passes through the first optical aperture to reach the first mirror, and the reflected light signal exits from the second optical aperture to reach the active optical module.

A light curtain protection system for monitoring a protected field of view, the light curtain protection system comprising:

• an active optical module having an emitter and a receiver, the emitter and the receiver disposed adjacent to each other to form a transceiving pair;
• a passive optical module configurable to be separated from the active optical module by a detection field, and optically aligned with the active optical module to receive an incident light signal from the active optical module and return a reflected light signal to the active optical module, the passive optical detection module comprising:
• means for redirecting the incident light signal to form the reflected light signal;
• a polarization control module adapted to impart a first predetermined polarization to the reflected light signal such that the reflected light signal received by the receiver corresponds to a second predetermined polarization;
• and,
• a first optical barrier and a second optical barrier having a respective first optical aperture and second optical aperture, wherein the incident light signal passes through the first optical aperture, and the reflected light signal exits from the second optical aperture to reach the active optical module.