cousa objective

The Cousa objective is the world’s first ultra-long working distance objective optimized for multiphoton imaging. Get the objective clear up and out of the way of your work!

SPECS

Working distance:
20 mm in air

Field-of-view:
2 mm x 2 mm (4 mm^2) nominal, up to 3 mm x 3 mm (9 mm^2) with +/- 5 degree scanning

Optical design:
infinity corrected, open source

Resolution:
< 0.7 microns lateral, 6 microns axial

Compatibility:
Works with a large range of imaging systems from Bruker, Sutter, Thorlabs, Neurolabware, and others.

Documents
Read all about it in the Nature Methods paper.

Zemax blackbox files (right click, ZIP) 

Pricing: $25,000

Email info@pacificoptica.com for a quote.

See what users think…

Working distance: 20 mm, air

Numerical aperture: 0.5

Effective focal length: 20 mm (10x)

Correction collar: 0–1 mm cover glass thickness

Entrance pupil: 20 mm, near the back glass

Mounting threads: M32 × 0.75

Scanning angles: ±3° nominal, ±5° usable

Primary wavelength range: 910–930 nm

Full wavelength range: 800–1,300 nm

Antireflective coating: 400–1,350 nm

Parfocal distance: ~90 mm

Weight: 477 g

Group delay dispersion: 4,910 fs² at 920 nm

The Cousa objective provides high resolution over a large field of view, with an ultralong working distance of 20 mm. There’s nothing else like it.

Here, the Cousa objective is used to image dendritic and dendritic spine dynamics due to synaptic events and backpropagating action potentials. (Data from Ikuko Smith lab, UCSB; Liam Adsit)