mask alignment device
Date1963
Inventory Number2003-1-0136
ClassificationMicroscope Accessory
Subject
Maker
Bausch & Lomb Optical Company
1853-present
Cultural Region
Place of Origin
Dimensions14 × 15.7 × 12 cm (5 1/2 × 6 3/16 × 4 3/4 in.)
Material
DescriptionThis is Bausch & Lomb mask alignment device. It converts a standard monocular zoom microscope into a mask alignment microscope.
The instrument has two eyepieces (3.5X) mounted in binocular fashion over prisms. There is a knob for focusing. On the side are two illuminating tubes, each consisting of an iris diaphragm and a removable yellow filter on a rod. The bottom of the binocular tube is threaded.
The instrument has two eyepieces (3.5X) mounted in binocular fashion over prisms. There is a knob for focusing. On the side are two illuminating tubes, each consisting of an iris diaphragm and a removable yellow filter on a rod. The bottom of the binocular tube is threaded.
Signedunsigned
FunctionA mask alignment microscope is a comparison microscope for viewing two objects simultaneously in microfabrication research laboratories. It permits checking and accurate alignment of registration marks on photomasks and substrates (called wafers).
Bausch & Lomb Optical Company
Date: 1930-1935
Accessories: micrometer eyepiece; oculars (5): 1 Leitz 8x, 1 pair B&L 6.4x, 1 pair B&L 12.5x; objective: Spencer 48 mm., 2.2x; monocular tube; glass bottle for immersion fluid; B & L canisters (3); case with key
Object number: 2003-1-0007
Bausch & Lomb Optical Company
Date: circa 1940
Accessories: apochromatic objectives (4): 90x, 47.5x, 20x, 10x; oculars (4): 1 pair 15x WF, 1 pair 10x WF; Abbe condenser.
Object number: 2003-1-0008
Bausch & Lomb Optical Company
Date: circa 1899
Accessories: B&L objectives on triple nosepiece and with cans (3): 1/12, 1/6, 2/3"; Zeiss objective for oil immersion: 40; Leitz mechanical stage; oculars (2): 1, 2; Abbe condensor; immersion oil can; standing case; key; spare stage clips.
Object number: 1351
Bausch & Lomb Optical Company
Date: 1937-1945
Accessories: oculars (2): 5x, 10x; B&L objectives with plastic cans (3): 16, 4, 1.8 mm; Abbe condensor; dark stop; blue filter; standing case
Object number: 1357
Bausch & Lomb Optical Company
Date: circa 1950
Accessories: oculars (2); objectives (4)
Object number: 1996-1-0129
Bausch & Lomb Optical Company
Date: 1897-1908
Accessories: ocular: 2; objectives (6): B. & L. 1/12, 1/2, 2, Reichert No. 3 and No 7a (missing), Spencer & Smith 1/4, 1; immersion oil in canister; blue filter; square cover glasses; dark-field stop; empty pillbox for cover slips; 5 Triple Alliance glass slides in paper; magnification table; case; key.
Object number: 1387
Bausch & Lomb Optical Company
Date: circa 1940
Accessories: oculars (6); objectives (3); condensor; case
Object number: 1996-1-0128
Bausch & Lomb Optical Company
Date: circa 1948
Accessories: paired objectives on slide (2): 6x, 1.3x, 0.66x; 1 pair oculars: 15x; standing maple case; keys (2)
Object number: 1350
Bausch & Lomb Optical Company
Date: 1950-1955
Object number: 2003-1-0074
Bausch & Lomb Optical Company
Date: 1900-1908
Accessories: objectives (3): 2 mm, 4 mm, 16 mm; oculars (2): 5, 10; condenser with two diaphrams; standing case with lens card
Object number: 1298
Bausch & Lomb Optical Company
Date: 1950-1960
Accessories: arc lamp, power supply, and carbons original to this microscope have been separated from it (1998-1-1637a). Objectives (3): 10X, 21X, 43X; vertical illuminator; projection eyepiece.
Object number: 1998-1-1637
Bausch & Lomb Optical Company
Date: 1950-1960
Object number: 1998-1-1637a