Optical Lens Holders, Fixtures and Mounts
Ocean Optics offers optical lens holders, fixtures and mounts for manipulating collimating lenses in various measurement setups. Holders position lenses and can be adjusted to accommodate various samples. Optical post mounts allow users to position lenses on optical breadboards.
74-ACH
Adjustable collimating lens holder
ACH-CUV-VAR
Adjustable collimating lens and cuvette holder
OPM-SMA
Optical post for mounting lens fixtures to breadboards
The 74-ACH is an adjustable collimating lens holder. It’s a versatile assembly designed for mounting lenses at multiple positions, both vertically and horizontally. This makes it particularly useful for transmission measurements of large or thick samples.
The ACH-CUV-VAR is an adjustable collimating lens and cuvette holder. It is two products in one: a fixture for positioning collimating lenses at various heights or for holding extra-large or especially thick samples, and a holder for accepting cuvettes for transmission measurements.
As a lens holder, the ACH-CUV-VAR has an anodized aluminum base and adjustable mount bars with 3/8-24 threaded holes for collimating lenses (two 74-UV Collimating Lenses are included). The bars can be adjusted to accept samples up to ~150 mm thick and the base is marked in 1-mm intervals as a pathlength guide. The ACH-CUV-VAR has a cuvette holder component that fits securely between the two mount bars and can accept cuvettes up to ~150-mm wide.
The OPM-SMA is a fixture for mounting 74-Series Collimating Lenses and SMA 905-terminated optical fibers. The OPM-SMA consists of a 1.5-inch OD disk with 3/8-24 threads for use with lenses and an adapter for use with SMA 905-terminated optical fibers. A special adapter that holds an SMA 905-terminated optical fiber flush against one surface of the OPM-SMA is included. The OPM-SMA also includes 8-32 (Imperial) and M6 (metric) threads for attachment to an optical post.
| Specifications | 74-ACH | ACH-CUV-VAR | OPM-SMA |
| Type | Adjustable collimating lens holder | Adjustable collimating lens and cuvette holder | Optical post mount |
| Base Material | Black anodized aluminum | Black anodized aluminum | Black anodized aluminum (mount) and stainless steel (post) |
| Mounting Bars Material | Black anodized aluminum | Black anodized aluminum | NA |
| Mounting Bars Positioning | Four 3/8-24 holes spaced 25.4 mm apart | Four 3/8-24 holes spaced 25.4 mm apart | NA |
| Mounting Bars Threading | Accepts lenses with 3/8-24 threads Uses 10-32 setscrews for adjusting the bars (recommend 5/32” hex wrench to loosen) | Accepts lenses with 3/8-24 threads Uses 10-32 setscrews for adjusting the bars (recommend 5/32” hex wrench to loosen) | NA |
| Connector Threads | 3/8-24 (lens holder) 8-32 (bore for mounting) | ||
| Collimating Lens Included | Two of 74-UV collimating lenses | No | |
| Dimensions | 152.4 x 76.2 x 152.4 mm | 200 mm x 67 mm x 157 mm | 38.1 OD x 10.2 width |
| Weight | 130 g |
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