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Optical Encoders

Mercury Series – M1500H
Celera Motion
Reduce the cost and size of your system, and increase its performance all at once. MicroE Systems’ Mercury 1500 kit encoders are available in two styles. The M1500S, an RS-422 compliant 15 pin standard D-sub connector and the M1500H, an RS-422 compatible 5x2 micro-connector for tight spaces. Simply stated, the M1500 is ...

Specifications

Grating Period: 20 um
Resolution (linear): 0.50 um
Linear Accuracy (total): 1 um
Max Speed (linear): 7200 mm/sec
Data Sheet
S21A Series Hollow-Shaft Rotary Optical Encoders
Allied Motion Technologies Inc
Allied Motion’s S21 series are cost-effective, hollow shaft modular optical encoders that are easy to mount and offer both incremental and absolute output formats. These compact, standard size 21 (2.1 in diameter) encoders have their own bearing system and are housed in a high-grade glass filled plastic resin shell with an IP40 ...

Specifications

Grating Period: -- um
Resolution (linear): -- um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
S21D Series Hollow-Shaft Rotary Optical Encoders
Allied Motion Technologies Inc
Allied Motion’s S21 series are cost-effective, hollow shaft modular optical encoders that are easy to mount and offer both incremental and absolute output formats. These compact, standard size 21 (2.1 in diameter) encoders have their own bearing system and are housed in a high-grade glass filled plastic resin shell with an IP40 ...

Specifications

Grating Period: -- um
Resolution (linear): -- um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
S21H Series Hollow-Shaft Rotary Optical Encoders
Allied Motion Technologies Inc
Allied Motion’s S21 series are cost-effective, hollow shaft modular optical encoders that are easy to mount and offer both incremental and absolute output formats. These compact, standard size 21 (2.1 in diameter) encoders have their own bearing system and are housed in a high-grade glass filled plastic resin shell with an IP40 ...

Specifications

Grating Period: -- um
Resolution (linear): -- um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
HEDS 5500 Optical Encoder
MICROMO
Optical Encoder, digital outputs, 2 channels, 100 - 500 lines per revolution.

Specifications

Grating Period: -- um
Resolution (linear): 100-500 um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
PA2-100 Optical Encoder
MICROMO
Optical Encoder, digital outputs, 2 channels, 100 lines per revolution.

Specifications

Grating Period: -- um
Resolution (linear): 50 um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
PA2-50 Optical Encoder
MICROMO
This Optical Encoder features digital outputs, 2 channels, and 50 lines per revolution.

Specifications

Grating Period: -- um
Resolution (linear): 50 um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
ChipEncoder Series CE300
MicroE Systems
ChipEncoder is a modular digital interface SMT kit encoder system that combines small size with high resolution. ChipEncoder models feature built-in interpolation and mount directly on your PC board, providing significant space and cost savings through design integration.

Specifications

Grating Period: 10 um
Resolution (linear): 1 um
Linear Accuracy (total): 40 um
Max Speed (linear): 14 mm/sec
Data Sheet
ChipEncoder Modular Digital Interface SMT Kit Encoder System
MicroE Systems
ChipEncoder is a modular digital interface SMT kit encoder system that combines small size with high resolution. ChipEncoder models feature built-in interpolation and mount directly on your PC board, providing significant space and cost savings through design integration.

Specifications

Grating Period: 40 um
Resolution (linear): 10 um
Linear Accuracy (total): 1 um
Max Speed (linear): 14 mm/sec
Data Sheet
Optira Series PI
MicroE Systems
Combining MicroE’s patented PurePrecision™ technology with state-of-the-art electronics and signal processing, the Optira delivers unprecedented performance in an incredibly small and lightweight package, providing resolution of up to 5nm with all AGC, interpolation, and signal processing performed in the sensor head.

Specifications

Grating Period: 20 um
Resolution (linear): 5 um
Linear Accuracy (total): 5 um
Max Speed (linear): 4 mm/sec
Data Sheet
TAL-200 Encoder
TECHNOHANDS Co Ltd
The TA series encoders are optical reflection incremental type encoders that have interpolator, combinate with linear/rotary scale, get small size, high resolution and low cost. Adopted a sensor of the diffraction image projection method for a optical head, that includes a LED light source and photo detector in a package. It outputs ...

Specifications

Grating Period: -- um
Resolution (linear): 80 um
Linear Accuracy (total): -- um
Max Speed (linear): -- mm/sec
Data Sheet
TAR-200 Encoder
TECHNOHANDS Co Ltd
The TA series encoders are optical reflection incremental type encoders that have interpolator, combinate with linear/rotary scale, get small size, high resolution and low cost. Adopted a sensor of the diffraction image projection method for a optical head, that includes a LED light source and photo detector in a package. It outputs ...

Specifications

Grating Period: -- um
Resolution (linear): 80 um
Linear Accuracy (total): -- um
Max Speed (linear): 8000 mm/sec
Data Sheet
TA-200 Encoder
TECHNOHANDS Co Ltd
The TA series encoders are optical reflection incremental type encoders that have interpolator, combinate with linear/rotary scale, get small size, high resolution and low cost. Adopted a sensor of the diffraction image projection method for a optical head, that includes a LED light source and photo detector in a package. It outputs ...

Specifications

Grating Period: -- um
Resolution (linear): 80 um
Linear Accuracy (total): 0.2 um
Max Speed (linear): 9600 mm/sec
Data Sheet
Optira Series – PI
Celera Motion
Optira is the only encoder in its size class that offers up to 5 nm resolution with all interpolation, AGC, and signal processing performed in the sensor head. No additional PCBs, adapters, or dongles are required for operation. Patented PurePrecision™ optical technology and industry-leading alignment tolerances from our MicroE ...

Specifications

Grating Period: 5 um
Resolution (linear): 5 um
Linear Accuracy (total): 1 um
Max Speed (linear): 4000 mm/sec
Data Sheet
Mercury Series – M1000
Celera Motion
Reduce the cost and size of your system, and increase its performance all at once. MicroE Systems’ Mercury 1000 kit encoders are smaller, higher performance, faster to install, and easier to use than any other encoder. Advanced features include SmartPrecision™ automatic offset and gain adjustments during set up to ...

Specifications

Grating Period: 20 um
Resolution (linear): 20 um
Linear Accuracy (total): 1 um
Max Speed (linear): -- mm/sec
Data Sheet

Frequently Asked Questions

Optical Encoder is a motion-sensing device that operates based on the interruption of light. It uses a light source and a photosensitive detector to convert a linear position to an electrical signal.

All Optical Encoders include the same main components: a light source, a photodetector, and a multi slit disc. The light source, typically an LED, and the photodetector are placed on the opposite sides of the slit disk. As the disk rotates, the disk becomes transparent periodically as the slits of the disk line up along the light beam path. The encoder then converts these periodic light pulses into electrical pulses, which are then transmitted to a motion control system that feeds to the output channels. By knowing the distance between adjacent slits, the Optical Encoder’s output channels provide data on the measured signals' count, direction, and speed.

Optical Encoders are commonly used for robotics, medical and lab equipment, CNC machining, and a variety of other applications involving motion controls. The encoders can also be easily altered to provide desired application capabilities.

Yes, an Optical Encoder is an electro-mechanical motion sensor.

The accuracy of encoders is measured in arcseconds and varies for each type. Although Optical Encoders are always considered reliable, precise, and accurate devices, careless mistakes can degrade their accuracy through several error sources.

The two common classifications of Optical Encoders are “transmission type” and “reflection type”. Their grouping depends on the optical path taken by the light-absorbing component of the machine.

Optical Encoders offer better accuracy and higher resolution than magnetic encoder competitors, and they can be used in environments with strong magnetic fields. They are also highly immune to electrical interference from eddy currents, making them an excellent choice for electric circuits.

The cost of an Optical Encoder is highly dependent on the product’s size. The resolution and precision of an Optical Encoder rely on the detail of the slit disc. A larger disc means a larger machine, since these encoders offer higher precision they will therefore come at a higher price.

There are 15 different Optical Encoders from suppliers and manufacturers listed in this category. In just a few clicks you can compare different Optical Encoders with each other and get an accurate quote based on your needs and specifications. Please note that the prices of Optical Encoders vary significantly for different products based on various factors including technical parameters, features, brand name, etc. Please contact suppliers directly to inquire about the details and accurate pricing information for any product model. Simply navigate to the product page of interest and use the orange button to directly reach out to the respective supplier with one click.

Did You know?

Optical encoder is a transducer that accurately measures rotary motion. In a typical optical encoder a coded disk with alternating opaque and transparent areas acts as the tracking mechanism for the rotational position of the shaft it is attached to. A light source and a sensor situated on the opposite sides of the rotating disk count the steps the rotating disk makes as it sequentially allows the light to be recorded as the open areas line up on the path between the light source and the detector. The signal generated from the detector is then used as a feedback system for determining the position, direction and speed for the motion. Depending on the number of divisions on the coded disk, optical encoders can provide very high accuracies down to the 10th of a degree. Combined with a high-pitch driving shafts these accuracies translate to excellent precision in linear motion. As a result of their simplicity and precision Optical Encoders are most frequently used in robotics. As the robotics field grows steadily towards automation, encoders have played a larger role than ever in meeting the data requirements of the industry. Common robotics applications include automated guided vehicles (AGVs), automated assembling, automated mobile robots, and servo motors. These are projects you hear about in everyday life, manufacturing machines, medical devices, and even the Mars Rovers! Optical Encoders are the most common encoders used in robotics because of their unmatched precision in incremental and absolute measurements. They will continue to assist in innovating modern robotics, providing useful feedback and data to be used in further experimentation and development.