Quantum Devices
Quantum Devices is a US-based, vertically integrated manufacturer of incremental optical rotary encoders and silicon photodiodes, founded in 1989 in Barneveld, Wisconsin. It serves OEM customers in medical, robotics, motion control, and industrial automation markets through direct sales, a global distributor network, and an online store.
- Company typePrivate
- Founded1989
- HeadquartersBarneveld, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Quantum Devices does
Quantum Devices, Inc. is a privately held US manufacturer of incremental optical rotary encoders, headquartered in a vertically integrated facility in Barneveld, Wisconsin. Founded in October 1989 by Ron Ignatius, the company began in silicon photodiode fabrication and transitioned into full encoder manufacturing in 1999. Its product portfolio includes modular bearingless encoders (QM35, QML35, QM22, and their EZ-Comm programmable variants), bearing encoders (QR145, QR200, QDH20, QR12, LP12, HR12, JR12), custom silicon photodiodes, the QC201 handheld commutation indicator, and exclusive North American distribution of Numerik Jena/OPTOLAB line drivers. Core technology centers on a patented interlaced photodiode array, hermetically sealed TO-46 LED package, Shadow Technology (interdigitated sensing), and the lock-n-twist assembly mechanism, supported by a Class 1000 cleanroom and full in-house photodiode-to-assembly manufacturing.
The company sells primarily through OEM embedded relationships with equipment manufacturers for servo motors, robotics, medical devices, and motion control systems; a global distributor network covering the USA, Canada, China, Israel, and Taiwan; direct enterprise sales for high-volume and custom configurations; and a self-serve Encoder Store with 48-hour turnaround for standard models (capped at 10 units per order). Pricing is transactional at the unit level, with encoders priced between $15 and $50 and programming kits around $158. Customer segments span medical and healthcare equipment, robotics and automation, motion control and servo systems, industrial manufacturing, aerospace and defense, heavy industry and energy, and encoder replacement/retrofit applications for obsoleted Heidenhain and RENCO models. The company is ISO 9001:2015 certified, holds multiple patents on encoder and photodiode technology, and operates without disclosed institutional investors, subsidiaries, or public funding.
Quantum Devices firmographics
Firmographics- Name
- Quantum Devices
- Legal name
- Quantum Devices, Inc.
- Website
- https://quantumdev.com
- Company type
- Private
- Founded year
- 1989
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Quantum Devices is a US-based, vertically integrated manufacturer of incremental optical rotary encoders and silicon photodiodes, founded in 1989 in Barneveld, Wisconsin. It serves OEM customers in medical, robotics, motion control, and industrial automation markets through direct sales, a global distributor network, and an online store.
- Ownership category
- akta.pro rank
Where Quantum Devices is headquartered
LocationHeadquarters
- HQ city
- Barneveld
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Quantum Devices business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D
Revenue model
- Optical Rotary Encoders: Sale of incremental optical rotary encoders including QM35, QML35, QR145, QR200, QR12, QDH20, LP12, HR12, JR12, QM22 models. Sold directly through online store and via distributor network. Volume discounts available for large orders.
- Photodiodes: Custom and standard silicon photodiodes including planar structures with single or multiple diode configurations. Manufactured in-house with custom packaging options.
- OPTOLAB Line Drivers: Distribution of Numerik Jena/OPTOLAB Microsystems line drivers including OL7272LF and OL2068LF models. Sole distributor for North America.
- QC201 Commutation Indicator: Handheld commutation alignment device for timing encoder commutation channels to BLDC motors. Sold with 2-year warranty.
- Custom OEM Solutions: Custom-designed encoders for specific OEM applications including special bore sizes, resolutions, commutation options, and replacement encoders for obsoleted models.
- Accessories and Cables: Encoder cables and programming kits including QM35 Optical Rotary Encoder Cable, Comm (Differential) and programming kits for EZ-Comm models.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | QM35 Optical Rotary Encoder - $43.12 each |
| Unit Pricing | Pay-as-you-go | QML35 Optical Rotary Encoder - $41.25 each |
| Unit Pricing | Pay-as-you-go | QM35 EZ-Comm Optical Rotary Encoder - $47.38 each |
| Unit Pricing | Pay-as-you-go | QM35 Programming Kit for EZ-Comm - $158.76 |
| Unit Pricing | Pay-as-you-go | Encoder Cables - $15.06 to $20.15 |
| Unit Pricing | Pay-as-you-go | QC201 Commutation Indicator - Contact for pricing |
Go-to-market motion5 records
Distribution channels4 records
Marketing channels6 records
Quantum Devices product offering
Product offeringCore offering
Quantum Devices, Inc. designs and manufactures incremental optical rotary encoders, custom OEM encoders, photodiodes, line drivers, and commutation tools. The company produces precision motion-feedback components for robotics, medical equipment, industrial automation, and motion control applications, with all products made in the USA.
Product overview
Quantum Devices is a US-based encoder manufacturer offering a comprehensive portfolio of incremental optical rotary encoders for motion control applications. The product line centers on the QM35/QML35 modular encoder family (including EZ-Comm programmable variants), the miniature QM22 encoder, and bearing-style encoders (QR145, QR200, QDH20, QR12, LP12, HR12, JR12). Supporting products include the QC201 Commutation Indicator for motor alignment, OPTOLAB line drivers distributed exclusively in North America, and custom silicon photodiodes with proprietary Shadow Technology. The company serves diverse industries including robotics, servo motors, medical devices, AGVs, and industrial automation, with vertical integration from photodiode fabrication to finished encoder assembly at their Wisconsin facility.
Differentiator
Problem solved
Functional benefit
Brands
- QPhase: Family of Encoders featuring patented sensor technology with high resolution, increased frequency response and superior reliability over temperature (0 to 120 degrees C).
- OPTOLAB
- EZ-Comm
- Shadow Technology
Quantifiable outcome
- 50% larger photodiode sensing envelope compared to competitor encoders
- +5 more outcomes
Companies that use Quantum Devices
Customer profileNamed customers4 records
Segments7 records
Ideal customer profiles1 record
Quantum Devices technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
Quantum Devices partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Numerik Jena / OPTOLAB MicrosystemscoreQuantum Devices serves as the sole distributor of Numerik Jena, formally OPTOLAB Microsystems products, for North America. Both companies have long-term reputations for producing customer-specific optoelectric systems and assemblies. OPTOLAB's engineering team has been responsible for many Encoder Technology (ET) line driver and signal processing innovations used by the Motion Control Industry worldwide.
Scale indicators9 records
Recent moves6 records
Expansion highlights6 records
Quantum Devices competitors and assessment
Company assessmentDirect peers
- Heidenhain: German-based global leader in incremental and absolute optical rotary encoders for machine tools, robotics, and motion control. Directly comparable product portfolio; Quantum Devices even offers drop-in replacements for obsoleted Heidenhain models.
- Renco (Rockwell Automation): Encoders historically competing in incremental optical rotary encoders for servo and motion control. Quantum Devices explicitly offers replacement encoders for obsoleted Renco models.
- US Digital: US-based manufacturer of optical rotary encoders and motion control components with overlapping product lines (incremental encoders, commutation, custom designs) and similar SMB/OEM e-commerce distribution model.
- Dynapar (Sensata Technologies): Manufacturer of incremental and absolute rotary encoders, including bearing and modular designs. Directly competes in industrial automation, servo, and motion control encoder markets.
- Hengstler: European encoder specialist offering incremental and absolute rotary encoders for industrial automation, medical, and servo applications — overlapping target segments with Quantum Devices.
- Kuebler (Kubler): Manufacturer of incremental and absolute rotary encoders, slip rings, and inclinometers serving industrial automation — directly comparable optical encoder offerings.
- Encoder Products Company: US-based specialty manufacturer of incremental and absolute rotary encoders with similar niche positioning, custom-design capabilities, and industrial/medical customer base.
Broad incumbents
- Baumer Group: Broad industrial sensor and encoder manufacturer with extensive encoder portfolio across multiple technologies; overlaps with Quantum Devices in optical incremental encoders for motion control.
- Pepperl+Fuchs: Large industrial sensor/automation incumbent offering rotary encoders among broader factory automation portfolio; competes with Quantum Devices in motion control and OEM encoder segments.
Emerging players
- CUI Devices: US-based electronic components manufacturer that has expanded into motion and encoder products, competing in the lower-cost incremental encoder segment alongside Quantum Devices' QM22 and QM35 lines.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Quantum Devices social profiles
Digital presenceQuantum Devices compliance and trust
Trust signalCompliance1 record
Quantum Devices financial estimates
Financial estimateRevenue estimate
Valuation estimate
Quantum Devices leadership team
Management profileNumber of profiles
Profiles1 record
Quantum Devices funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Quantum Devices M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Quantum Devices
What does Quantum Devices do?
Quantum Devices, Inc. designs and manufactures incremental optical rotary encoders, custom OEM encoders, photodiodes, line drivers, and commutation tools. The company produces precision motion-feedback components for robotics, medical equipment, industrial automation, and motion control applications, with all products made in the USA.
Is Quantum Devices a public or private company?
Quantum Devices is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Quantum Devices founded?
Quantum Devices was founded in 1989. It employs 51 to 100 people.
Where is Quantum Devices based?
Quantum Devices is headquartered in Barneveld, United States, in the North America region.
How does Quantum Devices make money?
Six revenue lines are on record. Optical Rotary Encoders are the primary driver. The others are photodiodes, OPTOLAB Line Drivers, QC201 Commutation Indicator, custom OEM Solutions and accessories and Cables.
Who are Quantum Devices's main competitors?
Direct peers on record are Heidenhain, Renco (Rockwell Automation), US Digital, Dynapar (Sensata Technologies), Hengstler, Kuebler (Kubler) and Encoder Products Company. Broad incumbents are Baumer Group and Pepperl+Fuchs. CUI Devices is listed as an emerging player.
Does Quantum Devices have an API?
No public API is recorded for Quantum Devices.