Ocean Optics 74-ACH User Manual

74-ACH

Adjustable Collimating Lens

Holder

Installation and Operation Instructions

Description

The 74-ACH Adjustable Collimating Lens Holder is a versatile assembly for mounting lenses at
multiple positions. It is especially useful for transmission measurements of large or thick samples not
easily accommodated by other sampling optics such as our FHS-UV and FHS-VIS In-line Filter
Holders.

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74-ACH Installation and Operation Instructions

Application Tips

 The 74-ACH consists of an anodized aluminum base and adjustable mount bars.

 Each bar has four 3/8-24 threaded holes, spaced 2.54 cm (1") apart starting 2.54 cm (1") from

the top of the bar, to accommodate collimating lenses.

 The bars can be adjusted on the base by loosening two 10-32 threaded set screws with a

0.40 cm (5/32") hex-head wrench (not included).

 The bars can be set far enough apart to accept samples up to ~10 cm (3.94”) thick.

 The base is scored at ½ cm (0.20”) intervals as a path length guide.

Specifications

Assembly material:
Base
Mount bars

Dimensions:
Base
Mount bars
Assembly

Blue anodized aluminum
Black anodized aluminum

7.62 cm(3”) x 15.24 cm (6”) x 0.64 cm (¼”)

2.54 cm (1”) wide x 0.76 cm (0.3”) thick

15.24 cm (6”) height

Threads:
mount bars
set screws for mount bars

Measurement bar:

Accept 3/3-24 threads
10-32 threads

Has 0.5 cm (0.20”) gradations as path length measurement
guide. Total length is 10 cm (3.94”).

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