What is SIC code 3827?

SIC code 3827 represents the Optical Instruments & Lenses industry. SIC (Standard Industrial Classification) is a four-digit code system used by the U.S. SEC to classify companies by their primary line of business. There are 7 public companies registered under this code in the SEC EDGAR database.

What is the largest Optical Instruments & Lenses company by revenue?

COHERENT CORP. is the largest company in the Optical Instruments & Lenses industry by revenue, reporting $5.8B in FY2025 according to its SEC EDGAR 10-K annual filing. Companies in this industry with available XBRL data collectively reported $6.9B in revenue across their most recent fiscal years.

Optical Instruments & Lenses

Q: How many public companies are in the Optical Instruments & Lenses industry?

There are 7 SEC-registered public companies classified under SIC code 3827 (Optical Instruments & Lenses) in the SEC EDGAR database.

SIC 3827 · 7 companies

This page lists all SEC-registered public companies classified under SIC code 3827 (Optical Instruments & Lenses). SIC — Standard Industrial Classification — is a four-digit code system used by the SEC to group companies by their primary line of business. You can also view financial rankings for this industry.

The Optical Instruments & Lenses industry includes 7 SEC-registered public companies. The largest by revenue is COHERENT CORP., which reported $5.8B in FY2025. Companies in this industry with available XBRL data collectively reported $6.9B in revenue across their most recent fiscal years.

Company	Ticker	Exchange	State	Filings
CAMTEK LTD	CAMT	NASDAQ	L3	680
COHERENT CORP.	COHR	NYSE	PA	1,000
KLA CORP	KLAC	NASDAQ	DE	1,003
MultiSensor AI Holdings, Inc.	MSAIW	NASDAQ	DE	345
NOVA LTD.	NVMI	NASDAQ	—	906
Optex Systems Holdings Inc	OPXS	NASDAQ	DE	453
SYNTEC OPTICS HOLDINGS, INC.	OPTXW	NASDAQ	DE	175