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Optical encoders case studies and application notes
See how others have trusted Renishaw optical encoders. Our range of case studies and application notes showcase how our robust and high-performance position encoders have solved precision measurement challenges. The applications are as varied as electronics, precision manufacturing, scientific research, aerospace, medical and healthcare.
Case studies - Electronics
Laser Microsystems S.A. is a leading source of technology for instrumentation and photonics products, focusing on lasers and precision positioning. Renishaw provided encoder solutions that delivered higher accuracy and position checking.
Vacuum technology is used in high-precision manufacturing processes, in applications such as semiconductor wafer inspection, wafer bonding, photolithography and thin film deposition. VAD selected Renishaw's TONiC UHV encoder for its vacuum compatible platforms.
Volume manufacturing of high frequency electronic products requires high-performance PCB impedance measurement machinery. Precision machine builder, Sam-Jeong Automation is using TONiC™ incremental encoder to deliver the speed, accuracy and repeatability required by its next generation PCB impedance measurement machine.
Renishaw’s TONiC encoder has provided Scodix, a leading provider of digital print enhancement presses for the graphic arts industry, with an off-the-shelf solution. The encoder series has enabled automatic feedback control of the Scodix Ultra series’ patented substrate transportation system.
TPC Motion (TPC), a well-known Korean manufacturer of motion-control components, has developed a laser aperture stop (optical slit) assembly that employs Renishaw’s miniature ATOM™ linear encoder system on multiple X and Y axes.
Thorlabs designs and manufactures a wide array of photonics equipment: it selected the TONiC series to equip both the Thorlabs DDS600 600 mm long travel stage and the MLS203 microscope stage, as the Renishaw encoders outperformed the competition in every test.
Taiwan's Industrial Technology Research Institute (ITRI ) has addressed the multi-axial machine tool technology trend by developing an advanced dual-axis rotary table, with integrated Renishaw RESOLUTE absolute rotary encoders and Panasonic serial communication protocols.
ASM Pacific Technology Ltd (ASMPT), the world’s largest supplier of wafer assembly and packaging equipment for the semiconductor industry, aims to offer complete factory automation solutions and satisfy customers’ needs through its innovative and cost-effective products.
Known for its nano-motion stages for biomedical, semiconductor and photovoltaic applications, ALIO Industries depends on Renishaw encoders for the accuracy and repeatability needed to drive its True Nano™ motion system solutions.
Case studies - Precision manufacturing
After testing and evaluation, TGT selected Renishaw’s FORTiS™ enclosed encoders to optimise its tool grinding machines’ performance , thanks to FORTiS' ease of installation and other leading-edge features.
Constant velocity control is essential for many advanced industrial processes, but traditional motor designs give rise to cogging forces which generate ripples in the motor velocity. KOVERY Inc has designed advanced linear motors, with integrated Renishaw encoders, that solve this problem.
Beijing U-Precision Tech Co., Ltd. (U-Precision) is a leading manufacturer of equipment for high-precision industrial processes. Its advanced semiconductor equipment and motion stages use Renishaw's high-performance TONiC encoders.
Haozhi builds direct-drive rotary (DDR) tables and linear motors with integrated high-performance optical encoder systems from Renishaw, which give Haozhi products a substantial competitive advantage.
Motion control systems are an essential part of FPD manufacturing equipment and are responsible for ensuring manufacturing precision. JUSTEK Inc., based in Korea, has developed a successful range of customisable direct-drive motors using Renishaw's high-performance optical encoders.
The quick and easy installation and set-up procedures of Renishaw's compact encoders enable Chieftek Precision Co., Ltd. (CPC) to build competitive direct-drive (DD) motion stages without sacrificing quality and performance.
CNC rotary tables play a vital role in the performance of multi-axis machining centres. As table accuracy and reliability are of paramount concern throughout the product's lifetime, Matsumoto Machine Corporation has reduced indexing errors and improved performance by enhancing both product calibration and encoder technologies.
DUKIN designs CMMs that minimise measurement errors through robust mechanical design and position feedback. The expansion of the DUKIN product range to cover a variety of different accuracy and capacity requirements has been supported by Renishaw encoders.
SOLPOWER is a Taiwanese manufacturer of machine tool components such as Direct-Drive (DD) rotary tables, integrated spindle motors and linear motors. Renishaw’s RESOLUTE absolute optical encoders provide high-performance feedback control of the DD mechanism.
REVO-2, an improved version of Renishaw's revolutionary multisensor 5-axis measuring head for use on CMMs, incorporates Renishaw’s ATOM incremental encoder with RCDM rotary (angle) glass scales on both of its axes (yaw and pitch) for leading edge accuracy and speed.
A continuous product development cycle, horizontal organisational structure and streamlined range of model sizes have made COORD-3 a global CMM brand. Renishaw supplies a wide-range of precision metrology products to COORD-3 and both companies benefit from a long-standing and successful partnership.
Renishaw’s RESOLUTE™ encoder is an innovative, true-absolute measuring system that guarantees maximum process reliability for precision assembly systems used in the micro-electronics and micro-optics industries.
Motion system designers usually face a compromise between speed and accuracy, yet Steinmeyer-FMD’s new precision, multi-axis air bearing gantry system overcomes this dilemma with the help of Renishaw’s high-performance TONiC™ optical incremental encoder.
Case studies - Scientific, research and analysis
Wise Observatory chose to replace legacy encoders on the two positioning axes of the main one-metre-diameter Ritchey-Chrétien telescope with RESOLUTE™ encoders to greatly enhance both its positioning accuracy and positional stability.
French technology company IRELEC Alcen manufactures optomechanical and robotics systems for synchrotron facilities worldwide and specialises in the manufacture of custom mirror systems that focus X-rays on a target. Renishaw's position measurement products have helped IRELEC to push the boundaries of synchrotron science.
Renishaw’s RESOLUTE encoders now support SYMÉTRIE’s Ground Integration and Calibration Support (GICS) and Interferometry Assembly Detection Electronics Assembly (IA DEA) hexapods, designed for advanced component validation testing in the manufacture of the Meteosat Third Generation (MTG) weather satellites.
Instron has just launched an advanced bi-axial variant of the ElectroPuls™ E3000 All-Electric test instrument. Renishaw’s RESOLUTE™ is the only absolute optical encoder to support ElectroPuls controllers and satisfy all other criteria - while offering linear resolutions of 1 nm and speeds beyond 20 m/s.
The digital age has led to a quantum leap in astrophotography, making even the furthest galaxies accessible to professional astronomers and observatories. Now, thanks to Astrosysteme Austria (ASA), helped by Renishaw technologies, even keen amateurs can observe and photograph these remote solar systems at an affordable price.
Case studies - Aerospace
Pacific Antenna Systems (PAS) utilizes several different electro-mechanical designs for its antennas, depending on the application. Rotary position encoders are installed on each motion axis (gimbal) to provide the required precision and accuracy.
How fuel efficient is a commercial airliner? The honeycomb seal-ring has been proven to optimise the fuel efficiency of aero-engines, but the measurement of these seals present difficult engineering challenges. Now, HAESL has solved this challenge by incorporating Renishaw’s TONiC incremental linear and rotary (angle) encoders within its new optical Seal Ring Measurement System (SRMS).
Case studies - Medical and healthcare
3DHISTECH designs and manufactures one of the world's fastest and highest-capacity autonomous panoramic digital slide scanners – the P1000. It is a highly accurate scanning microscope that enables large pathology labs to capture ultra-high resolution images of medical samples. Renishaw's VIONiC™ and LA11 encoders enable the P1000 to operate at higher speeds than competing products in an accurate and repeatable way.
Application notes
The FORTiS enclosed encoder has been designed to cater for the needs of machine tool OEMs, end-users and service providers. Two new application notes talk directly to these important markets in describing the diverse features and benefits of the FORTiS encoder range.
This application note discusses surface mount technology (SMT) applications and presents an example of where linear steel scale (installed to be thermally independent of its mounting substrate) may be preferable to the currently widely used, but expensive, near-zero thermal expansion scales.
This article explores how Renishaw's substrate mastered linear encoder scales, such as RKL, might be used in a fibre laser cutting application where a laser is used to precisely cut large sheets or plates of metal.
This article explores the advanced manufacturing techniques used to make the ATOM encoder and concludes with a real example of how the ATOM encoder helps to streamline the REVO-2 manufacturing process, while still providing exceptional metrology performance.
The VIONiC series of optical encoders has been specifically designed for micromachining processes and other types of precision manufacturing. This article highlights the importance of correct encoder selection with respect to laser machining.
The thermal behaviour of encoder scale is an important consideration when selecting any encoder system. This article presents an example position encoder application with a co-ordinate measuring machine (CMM) where mastered scale might be preferred.
This article explores the use of position feedback in modern photolithography and potential applications for the latest optical encoder systems, alongside traditional laser-based encoder systems, which give the machine designer the greatest scope to minimise machine footprint without compromising performance.
Solar energy is likely to become a major source of power generation and there are many commercial opportunities for successful supply chain participants. Motion control is required at every step of the photovoltaic (solar cell) manufacturing process. This article explores the role of encoders and motion control in the continuing evolution and refinement of solar cells.
The Renishaw's VIONiC™ series is an ultra-high accuracy, super-compact all-in-one digital incremental encoder.This article explores the important role of such high-performance encoder systems in applications such as motion control precision, specifically micro-manufacturing, micro-positioning and precision optics manufacture.
Control-loop architecture is an important consideration when assessing encoder performance in the context of the overall machine design. There are a number of ways to mitigate against sources of instability in the design of a precision motion stage. This article illustrates the potential of Renishaw’s RESOLUTE™ encoders for applications that traditionally demand ultra-fine pitch incremental encoders.
RESOLUTE FS (Functional Safety) encoder systems offer customers the outstanding metrology performance of the RESOLUTE series but with the added peace-of-mind that comes from compliance with the world’s most stringent functional safety standards. New applications for the RESOLUTE family of encoders now include the latest collaborative robotic and industrial manufacturing technologies.
Many of the world’s leading LiDAR (Light Detection and Ranging) manufacturers have developed vehicular LiDAR laser scanning systems, with Renishaw’s high-performance optical encoders onboard, to provide precise and accurate co-ordinate measurement data for the purposes of road infrastructure mapping and surveying.