Company lists · Data refreshed September 2026

Top 25 Optical testing equipment manufacturers worldwide

Name: Optical testing equipment manufacturers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,077 companies tracked

RevenueBase identified 1,077 optical testing equipment manufacturers worldwide as of September 2026 and tracks 29,013 professional contacts across them, including 7,715 with verified work emails and 0 with mobile numbers. China is the largest market and Shenzhen the largest hub.

This list covers optical testing equipment manufacturers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for optical testing equipment manufacturers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,077Companies

29,013Contacts tracked

7,715Verified emails

0Mobile numbers

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The 25 largest optical testing equipment manufacturers worldwide

Ranked by team size

Top 25 of 1,077 optical testing equipment manufacturers worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to optical testing equipment manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Zeiss Group	Partial evidence	Oberkochen, GermanyHQ checked Sep 17, 2026	10001+	6,840 contacts →
	Partial evidence “ZEISS is an internationally leading technology enterprise operating in the fields of optics and optoelectronics.” Source: RevenueBase Database · checked Sep 17, 2026
2	Gaotek INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 17, 2026	n/a	4,999 contacts →
	Indirect evidence “GAO Tek is a member of GAO Group of Companies, headquartered in New York City, USA & Toronto, Canada with a strong global presence.” Source: RevenueBase Database · checked Sep 17, 2026
3	Thorlabs	Strong evidence	Newton, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,348 contacts →
	Strong evidence “Thorlabs is a leading designer and manufacturer of photonics equipment for research, manufacturing, and biomedical applications.” Source: RevenueBase Database · checked Sep 17, 2026
4	Edmund Optics	Partial evidence	Barrington, NJ, United StatesHQ checked Sep 17, 2026	1,001-5,000	592 contacts →
	Partial evidence “Edmund Optics has been a leading supplier of precision optics and optical components since 1942, designing and manufacturing a wide array of multi-element optical lenses, lens…” Source: RevenueBase Database · checked Sep 17, 2026
5	ZYGO	Strong evidence	Middlefield, CT, United StatesHQ checked Sep 17, 2026	501-1,000	451 contacts →
	Strong evidence “Zygo is the global leader in the design and manufacture of advanced optical metrology systems and ultra-precise optical components and assemblies.” Source: RevenueBase Database · checked Sep 17, 2026
6	G&h Gooch & Housego	Strong evidence	Ilminster, United KingdomHQ checked Sep 17, 2026	1,001-5,000	391 contacts →
	Strong evidence “G&H is a world leader in optical designing, testing and manufacturing.” Source: RevenueBase Database · checked Sep 17, 2026
7	Luna Innovations	Partial evidence	Roanoke, VA, United StatesHQ checked Sep 17, 2026	201-500	333 contacts →
	Partial evidence “Luna Innovations Incorporated is a leader in optical technology, committed to serving its customers with unique capabilities in high-performance, fiber-optic-based sensing…” Source: RevenueBase Database · checked Sep 17, 2026
8	Optimax Systems, INC	Strong evidence	Ontario, NY, United StatesHQ checked Sep 17, 2026	201-500	261 contacts →
	Strong evidence “America's largest optics manufacturer, Optimax is on the cutting edge of future applications in space, high-energy lasers, and semiconductor.” Source: RevenueBase Database · checked Sep 17, 2026
9	Polytec	Indirect evidence	Waldbronn, GermanyHQ checked Sep 17, 2026	201-500	243 contacts →
	Indirect evidence “Polytec has been bringing light into the darkness for more than 50 years.” Source: RevenueBase Database · checked Sep 17, 2026
10	Schneider Optical Machines	Strong evidence	Fronhausen, GermanyHQ checked Sep 17, 2026	501-1,000	211 contacts →
	Strong evidence “SCHNEIDER is one of the world’s leading manufacturers for the development and production of machines in the fields of ophthalmics, precision optics and ultra-precision optics.” Source: RevenueBase Database · checked Sep 17, 2026
11	Fraunhofer IOF	Partial evidence	Jena, GermanyHQ checked Sep 17, 2026	201-500	207 contacts →
	Partial evidence “The Fraunhofer Institute for Applied Optics and Precision Engineering IOF in Jena, Germany, conducts applied research in the field of photonics and develops innovative optical…” Source: RevenueBase Database · checked Sep 17, 2026
12	Trioptics	Partial evidence	Wedel, GermanyHQ checked Sep 17, 2026	201-500	197 contacts →
	Partial evidence “TRIOPTICS – See the Difference Whenever optical performance plays a decisive role - our solutions make you see the difference.” Source: RevenueBase Database · checked Sep 17, 2026
13	Rochester Precision Optics	Strong evidence	West Henrietta, NY, United StatesHQ checked Sep 17, 2026	201-500	170 contacts →
	Strong evidence “Rochester Precision Optics (RPO) is a world-class vertically-integrated manufacturer of precision optical product solutions headquartered in the Greater Rochester, NY area.” Source: RevenueBase Database · checked Sep 17, 2026
14	Ocean Optics	Partial evidence	Orlando, FL, United StatesHQ checked Sep 17, 2026	201-500	163 contacts →
	Partial evidence “Ocean Optics pioneered miniature spectrometers and delivers spectral solutions to researchers, OEMs and industrial customers, also designs and builds industrial-grade photonics…” Source: RevenueBase Database · checked Sep 17, 2026
15	Ophir Optics An MKS Brand	Indirect evidence	Wilmington, MA, United StatesHQ checked Sep 17, 2026	5,001-10,000	151 contacts →
	Indirect evidence “Ophir is a brand within the MKS Instruments Photonics Solutions Division.” Source: RevenueBase Database · checked Sep 17, 2026
16	Optotech	Partial evidence	Wettenberg, ItalyHQ checked Sep 17, 2026	501-1,000	147 contacts →
	Partial evidence “OptoTech is not just a company name, but a synonym for innovation and technological progress in the optical industry.” Source: RevenueBase Database · checked Sep 17, 2026
17	LK Metrology	Partial evidence	Castle Donington, United KingdomHQ checked Sep 17, 2026	51-200	133 contacts →
	Partial evidence “At LK Metrology, we are shaping the future of measurement, optical inspection and design technology with precision, reliability and innovation.” Source: RevenueBase Database · checked Sep 17, 2026
18	Laser Components	Partial evidence	Olching, GermanyHQ checked Sep 17, 2026	201-500	127 contacts →
	Partial evidence “Since its establishment in 1982, LASER COMPONENTS has always defined itself as a solution provider for optical and optoelectronic technologies.” Source: RevenueBase Database · checked Sep 17, 2026
19	Instrument Systems Gmbh	Indirect evidence	Munich, GermanyHQ checked Sep 17, 2026	201-500	118 contacts →
	Indirect evidence “We bring quality to light.” Source: RevenueBase Database · checked Sep 17, 2026
20	Menlo Systems	Indirect evidence	Martinsried, United StatesHQ checked Sep 17, 2026	201-500	108 contacts →
	Indirect evidence “Precision in Photonics.” Source: RevenueBase Database · checked Sep 17, 2026
21	Zhejiang Crystal-Optech Co., LTD	Partial evidence	Taizhou, ChinaHQ checked Sep 17, 2026	10001+	108 contacts →
	Partial evidence “Crystal Optoelectronics is committed to becoming a "globally outstanding one-stop optical solution expert", providing one-stop professional services from components to modules and…” Source: RevenueBase Database · checked Sep 17, 2026
22	Edinburgh Instruments	Indirect evidence	Livingston, United KingdomHQ checked Sep 17, 2026	51-200	106 contacts →
	Indirect evidence “Founded in 1971, Edinburgh Instruments Ltd is a global provider in the research, development and manufacturing of state-of-the-art spectroscopic instrumentation.” Source: RevenueBase Database · checked Sep 17, 2026
23	Labsphere, INC	Indirect evidence	North Sutton, NH, United StatesHQ checked Sep 17, 2026	51-200	103 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
24	CI Systems	Partial evidence	Richardson, TX, United StatesHQ checked Sep 17, 2026	51-200	102 contacts →
	Partial evidence “Founded in 1977, CI Systems has grown to include an Electro-Optics Test Systems division, a semiconductor division and a subsidiary in the electronic card assembly and inspection…” Source: RevenueBase Database · checked Sep 17, 2026
25	Goepel Electronic	Indirect evidence	Jena, GermanyHQ checked Sep 17, 2026	201-500	101 contacts →
	Indirect evidence “Get the total Coverage!” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: optical testing equipment manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names optical testing equipment manufacturers.
Partial evidence: Its own public description names part of optical testing equipment manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name optical testing equipment manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,077 optical testing equipment manufacturers worldwide

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Optical testing equipment manufacturers worldwide at a glance

As of Sep 17, 2026

26.6%Verified-email coverage

26.9Average contacts per company

11-50Median size (employees)

7.0%Largest-city concentration · Shenzhen

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

315

11-50

344

51-200

239

201-500

110

501-1,000

1,001-5,000

5,001-10,000

10001+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among optical testing equipment manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 8 countries, largest first: China, the United States, Germany, India, the United Kingdom, France, Italy, Brazil. Country and city lists for optical testing equipment manufacturers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “optical testing equipment manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names optical testing equipment manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among optical testing equipment manufacturers, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 7,715 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Optical testing equipment manufacturers by location

8 lists · largest first

Every Optical testing equipment manufacturers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names optical testing equipment manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many optical testing equipment manufacturers are there worldwide?

RevenueBase identified 1,077 optical testing equipment manufacturers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Zeiss Group, headquartered in Oberkochen, tops this list with the largest team on record.

Which country has the most optical testing equipment manufacturers?

China leads with 401 companies, followed by the United States (299) and Germany (122). Every optical testing equipment manufacturers list by country and city is linked on this page.

Which city has the most optical testing equipment manufacturers?

Shenzhen leads with 75 headquartered companies, followed by Fuzhou (18) and Changchun (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 7,715 verified decision-maker contacts tracked across these 1,077 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.