Company lists · Data refreshed September 2026

Top 25 Optical testing equipment manufacturers based in the United States

Name: Optical testing equipment manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 299 companies tracked

RevenueBase identified 299 optical testing equipment manufacturers headquartered in the United States as of September 2026 and tracks 12,625 professional contacts across them, including 2,405 with verified work emails. Tucson is the largest hub.

This list covers optical testing equipment manufacturers headquartered in the United States, 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.

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

299Companies

12,625Contacts tracked

2,405Verified emails

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The 25 largest optical testing equipment manufacturers based in the United States

Ranked by team size

Top 25 of 299 optical testing equipment manufacturers based in the United States, 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	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
2	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
3	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
4	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
5	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
6	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
7	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
8	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
9	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
10	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
11	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
12	Weinert Fiber Optics INC	Partial evidence	Williamsburg, VA, United StatesHQ checked Sep 17, 2026	51-200	96 contacts →
	Partial evidence “WEINERT Fiber Optics is an established leader with decades of unique fiber optic experience.” Source: RevenueBase Database · checked Sep 17, 2026
13	Syntec Optics	Partial evidence	Rochester, NY, United StatesHQ checked Sep 17, 2026	201-500	92 contacts →
	Partial evidence “Syntec Optics (Nasdaq: OPTX) is an American optics and photonics manufacturing company located in Rochester, NY.” Source: RevenueBase Database · checked Sep 17, 2026
14	Optikos Corporation	Partial evidence	Wakefield, MA, United StatesHQ checked Sep 17, 2026	51-200	90 contacts →
	Partial evidence “With over 40 years of experience in optics, Optikos provides hands-on engineering expertise with the nimble mindset of a tech startup.” Source: RevenueBase Database · checked Sep 17, 2026
15	Coburn Technologies, INC	Indirect evidence	South Windsor, CT, United StatesHQ checked Sep 17, 2026	51-200	85 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
16	Cotsworks, INC	Strong evidence	Cleveland, OH, United StatesHQ checked Sep 17, 2026	51-200	76 contacts →
	Strong evidence “Moog \| Cotsworks designs and manufactures rugged optical components and subsystems to operate in harsh environments.” Source: RevenueBase Database · checked Sep 17, 2026
17	Veex INC	Indirect evidence	Fremont, CA, United StatesHQ checked Sep 17, 2026	201-500	71 contacts →
	Indirect evidence “VeEX a communications Test and Measurement company, develops innovative Test Solutions for next generation telecommunication networks and services.” Source: RevenueBase Database · checked Sep 17, 2026
18	Santa Barbara Infrared, Inc.	Strong evidence	Santa Barbara, CA, United StatesHQ checked Sep 17, 2026	51-200	62 contacts →
	Strong evidence “Santa Barbara Infrared designs and manufactures the most technologically advanced infrared and electro-optical test instrumentation available.” Source: RevenueBase Database · checked Sep 17, 2026
19	Research Electro-Optics	Partial evidence	Boulder, CO, United StatesHQ checked Sep 17, 2026	201-500	59 contacts →
	Partial evidence “Optics - Assemblies - Laser Products REO, an Excelitas Technologies Company, sets today’s standards for precision in optical components and assemblies with solutions that are…” Source: RevenueBase Database · checked Sep 17, 2026
20	Filmetrics, Inc., A KLA Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	n/a	59 contacts →
	Partial evidence “Filmetrics features a complete line of affordable UV to NIR spectrometer systems for measuring thin film thickness from 1nm to 13mm, optical constants, and deposition rates of…” Source: RevenueBase Database · checked Sep 17, 2026
21	Chroma Ate, Inc. USA	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	51-200	53 contacts →
	Indirect evidence “Founded in 1984, Chroma ATE, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
22	Precision Optics Corporation	Strong evidence	Gardner, MA, United StatesHQ checked Sep 17, 2026	51-200	49 contacts →
	Strong evidence “Precision Optics Corporation has been a developer and manufacturer of advanced optical instruments since 1982.” Source: RevenueBase Database · checked Sep 17, 2026
23	HGH USA	Partial evidence	Richardson, TX, United StatesHQ checked Sep 17, 2026	11-50	48 contacts →
	Partial evidence “Electro Optical Industries, Inc.(EOI) is now HGH USA, following our global rebranding under the HGH Group with HGH Infrared Systems.” Source: RevenueBase Database · checked Sep 17, 2026
24	Optosigma	Partial evidence	Santa Ana, CA, United StatesHQ checked Sep 17, 2026	11-50	40 contacts →
	Partial evidence “We are a leading company in providing #optics #optomechanics #linear stage #motorized stage #Photonics solutions #systems #Fiber optics #Optical Tables #Laser Security #Thermal…” Source: RevenueBase Database · checked Sep 17, 2026
25	Inrad Optics	Partial evidence	Northvale, NJ, United StatesHQ checked Sep 17, 2026	51-200	40 contacts →
	Partial evidence “Inrad Optics fabricates optical materials to exacting quality standards and incorporates those materials into advanced optical components, assemblies and systems.” 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 299 optical testing equipment manufacturers based in the United States

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Optical testing equipment manufacturers based in the United States at a glance

As of Sep 17, 2026

19.0%Verified-email coverage

42.2Average contacts per company

11-50Median size (employees)

4.7%Largest-city concentration · Tucson

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

104

11-50

117

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 299 companies.

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.
What qualifies: Companies headquartered in the United States 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. Companies headquartered outside United States are excluded even when they keep an office there.
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, 2,405 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.

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 based in the United States?

RevenueBase identified 299 optical testing equipment manufacturers headquartered in the United States 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?

Gaotek INC, headquartered in New York, tops this list with the largest team on record.

Which city has the most optical testing equipment manufacturers?

Tucson leads with 14 headquartered companies, followed by Rochester (7) and Irvine (5).

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 2,405 verified decision-maker contacts tracked across these 299 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.