achromatic doublet lens

Date: 1942-1950

Inventory Number: 2004-1-0392

Classification: Lens

Subject:

biology,

Maker: Edmund Salvage Company (fl. 1942 - 1950)

Owner: Lawrence Bogorad (1921 - 2003)

User: Biological Laboratories, Harvard University (founded 1932)

Cultural Region:

United States,

Place of Origin:

Audubon, Oaklyn,

Dimensions:

larger lens: 4.8 × 4.8 × 0.6 cm (1 7/8 × 1 7/8 × 1/4 in.)

Material:

glass, paper,

Description:

Two lenses in an envelope. Together the meniscus lens and bi-convex lens mate up to form a doublet achromatic lens.

Signedstamped on envelope: EDMUND SALVAGE COMPANY / OAKLYN-AUDUBON, NEW JERSEY

Inscribedstamped on envelope: TWO LENSES COMBINE / TO MAKE AN ACHROMAT / DIAMETER 48 MILLIMETERS / FOCAL LENGTH 11 INCHES

in pencil on envelope: 6309

ProvenanceFrom the office of Prof. Lawrence Bogorad, Dept. of Molecular & Cellular Biology, Bio Labs 5100 by Sara Schechner, Spring 2004.