Description:

OPB608 reflective switches consist of an infrared emitting device (LED or VCSEL) and a NPN silicon phototransistor mounted “sideby-side” on a parallel axis in a black opaque plastic housing. All OPB608’s (except OPB608R) have an emitting device and a phototransistor that are encapsulated in a visible filtering epoxy. The phototransistor responds to radiation from the emitter only when a reflective object passes within its field of view. The phototransistor has enhanced low current roll-off to improve the contrast ratio and immunity to background irradiance. LED versions are designed for near-field applications. The VCSEL version is designed for longer distances.

Features:

• Phototransistor output

• Unfocused for sensing diffuse surface

• Low cost plastic housing

• Enhanced signal to noise ratio

• Reduced ambient light sensitivity

Applications:

• Non-contact reflective object sensor

• Assembly line automation

• Machine automation

• Machine safety

• End of travel sensor

• Door sensor