Reflectors for Photoelectric Sensors
Prism reflectors and reflective targets for retro-reflective sensors
Reflectors and reflective targets for retro-reflective photoelectric sensors — the prism panel the beam bounces off. Industrypapa stocks the Micro Detectors RL and R series plus Datalogic reflectors in round and rectangular formats, from small 20 mm targets to full-size panels, with GST invoice and pan-India delivery.
Why the reflector matters as much as the sensor
In a retro-reflective installation the sensor and receiver sit in one housing and look across the gap at a reflector; the output switches when an object breaks the returned beam. That makes the reflector part of the optical circuit, not an accessory. A prism panel that is too small for the distance, misaligned, or simply dusty will cost you range and cause intermittent triggering that looks for all the world like a failing sensor.
Corner-cube prism reflectors return light along the path it arrived on, which is why they hold alignment far better than a plain mirror or a strip of white tape. That tolerance is the whole point: it is what lets a retro-reflective pair survive machine vibration and thermal movement without needing constant adjustment.
Reflectors stocked at Industrypapa
| Part number | Brand | Notes |
|---|---|---|
| R1-PLASTIC REFL | Micro Detectors | Compact plastic prism reflector, the general-purpose small target |
| R2-PLASTIC REFL | Datalogic | Plastic prism reflector for the Datalogic S-series |
| R3 | Micro Detectors | Small round reflector for short-range retro-reflective pairs |
| R6 Reflector | Micro Detectors | Mid-size prism panel |
| R10 Reflector | Micro Detectors | Larger panel for longer stand-off distances |
| RL 106G | Micro Detectors | RL series reflective target |
| RL110 | Micro Detectors | RL series panel reflector |
| RL111G | Micro Detectors | RL series, glass-grade prism |
| RL113G | Micro Detectors | RL series, glass-grade prism |
| RL116 | Micro Detectors | Larger RL series panel |
| RT-3970 | Micro Detectors | Reflective target for extended-range applications |
Choosing and fitting a reflector
- Size with the distance. The further the sensor sits from the reflector, the larger the panel has to be. A small target at long range is the single most common cause of a weak signal.
- Check the sensor's rating. Retro-reflective ranges are quoted against a specific reference reflector; a smaller one reduces the usable distance.
- Mount it square. Prism reflectors tolerate a few degrees of misalignment, but not a panel that has been knocked out of true.
- Keep it clean. Dust, coolant mist and packaging fibre on the prism face cost range quickly. Include it in the cleaning round.
- Watch for shiny targets. If the object being detected is glossy it can reflect enough light to hold the output on — use a polarised sensor with the reflector.
- Order the spare. Reflectors are cheap and get knocked off machines; a spare in the store avoids a stopped line.
Buying photoelectric sensor reflectors in India
Industrypapa supplies reflectors and reflective targets to machine builders, packaging plants and maintenance teams across India. They are almost always ordered alongside the sensor, so tell us the sensor part number and the sensing distance and we will confirm the right panel rather than leaving you to work it out from the drawing. GST invoice, pan-India delivery.
Related ranges: photoelectric sensors, Datalogic sensors, Micro Detectors sensors, mounting brackets and connector cables. For anything not listed, send us the part number.
Frequently asked questions
What is a reflector used for?
It returns the beam in a retro-reflective photoelectric installation. The sensor watches its own light coming back off the reflector and switches when an object interrupts it.
Can I use any reflector with any sensor?
Physically yes, but the sensing range quoted for a sensor assumes a particular reference reflector. Using a smaller panel shortens the usable distance, so match the size to the gap you need to cover.
Why has my sensor become unreliable?
Before replacing the sensor, clean the reflector and check it is still square. A dirty or knocked prism accounts for a large share of the retro-reflective faults we are asked about.
Do you supply the brackets too?
Yes — mounting brackets for both the sensor and the reflector are available alongside, so the pair can be installed as a set.