Holophane, a division of

Acuity Brands Acuity Brands, Inc. is a lighting and building management firm headquartered in Atlanta, Georgia, with operations throughout North America and in Europe and Asia. It currently has about 13,000 employees and recorded net sales of $3.7 billion for ...

, is a

manufacturer Manufacturing is the creation or production of goods with the help of equipment, labor, machines, tools, and chemical or biological processing or formulation. It is the essence of secondary sector of the economy. The term may refer to ...

of lighting-related products founded in 1898 in London, England. The company is a UK-based (Milton Keynes, England) and US manufacturer (based in

Newark, Ohio Newark ( ) is a city serving as the county seat of Licking County, Ohio, United States, east of Columbus, at the junction of the forks of the Licking River. The population was 49,934 at the 2020 census, which makes it the 15th largest city in O ...

) of lighting fixtures for commercial, industrial, outdoor, and emergency applications. The company is noted for its glass reflector/refractor. In addition, it manufactures lenses for street lights, including

General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable en ...

, Cooper Lighting, and Lithonia Lighting. Holophane has been integral in the

Illuminating Engineering Society of North America The Illuminating Engineering Society (IES), formerly the Illuminating Engineering Society of North America (IESNA), is an industry-backed, not-for-profit, learned society that was founded in New York City on January 10, 1906. The IES's stated mi ...

since its inception in 1906, with the first meeting being held in the headquarters. The hallmark of Holophane luminaires, or lighting fixtures, is the

borosilicate glass Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10−6 K−1 at 20 °C), m ...

reflector/refractor. The glass prisms provide a combination of uplight and downlight to illuminate any environment evenly without creating dark spots or glare. This ribbed glass shade/reflector, called "Holophane" or "Holophane style/type" is used in "vintage" style lighting, and is licensed and copied throughout the lighting industry. The trademarked name for the borosilicate glass is Endural. In October 2008, Acuity Brands announced that it was closing the

Utica, Ohio Utica is a village in Knox and Licking counties in the U.S. state of Ohio, along the North Fork of the Licking River. The population was 2,132 at the 2010 census. The village is home to the general headquarters (HQ) of the Velvet Ice Cream Com ...

plant and scaling back its Newark, Ohio assembly operations and relocating them to Mexico and

Crawfordsville, Indiana Crawfordsville is a city in Montgomery County in west central Indiana, United States, west by northwest of Indianapolis. As of the 2020 census, the city had a population of 16,306. The city is the county seat of Montgomery County, the only char ...

References

External links

European websiteUS website
Glassmaking companies of the United Kingdom Companies based in Ohio Manufacturing companies established in 1898 Lighting brands 1898 establishments in England {{US-manufacturing-company-stub