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Long Working Distance Immersion Objective

Long Working Distance Immersion Objective
Long Working Distance Immersion Objective
space exceeding 60mm x 60mm can be secured by immersion

WD30mm with NA0.3(immersion)!
WD40mm with NA0.6(immersion)!

Suitable for use in a light sheet microscope.
Long working distance allows for deep observation of large transparent specimens. CS03 series supports a wide range of refractive indices without a correction ring due to the unique optical design(Patent pending). CS06-10-40-154 supports a wide range of refractive indexes by adjusting the correction ring. Dedicated design for immersion provides clear image. Field curvature is corrected, so the entire field of view is in focus.

■ Refractive index

CS03 series: 3types of lenses to match the refractive index of the immersion media
　1.523-1.560
　1.500-1.536(CUBIC-R+ etc.)
　1.462-1.502(CUBIC-X2 etc.)

CS06-10-40-154: Can be used for immersion media with refractive index of 1.520-1560 by adjusting the correction ring.

■ Applications

Biomedical microscope
Fluorescense microscope
Lightsheet microscope

We also accept custom designs and productions according to the customer's desired specifications.

Specification examples

CS03-10-33-156 CS03-10-30-152 CS03-10-25-148 CS06-10-40-154
Numerical aperture (NA) 0.3 0.6
Magnification ※１ 10
Focal length 18mm
Working distance ※２ 33.3mm ※３ 29.7mm ※４ 25.1mm ※５ 40.60mm ※６
Field of view Φ2.5mm Φ2mm
Refractive index of immersion media (d-line) 1.523-1.560 1.500-1.536 1.462-1.502 1.520-1.560
Wavelength Chromatic aberration and Field curvature Correction 486-656nm
Spherical Correction 450-750nm 486-656nm
Transmittance See the figure below 80% and more
Correcting ring Non Yes
Parfocal length 113mm 145mm
Mounting thread M25×0.75 6-φ6mm hole
(PCD120mm)
Pupil position 49.5mm ※７ 49mm ※８
Maximum outer diameter φ39mm φ106.5mm
(flangeφ134mm)
Mass 460g 465g 480g 7900g
Long working distance dipping objective(PDF, 660KB) Super long working distance dipping objective(PDF, 285KB)

※１Using imaging lens with focal length of 180mm.
※２ Differs depends on immersion refractive index.
※３ nd=1.560 on the d-line (587.56nm)
※４ nd=1.520 on the d-line (587.56nm)
※５ nd=1.477 on the d-line (587.56nm)
※６ nd=1.540 on the d-line (587.56nm)
※７ Distance from mounting position to specimen side
※８ Distance from mounting position to specimen side

Transmittance

Transmittance

Dimensions(CS03-10-33-156)

Dimensions(CS03-10-33-156)

Dimensions（CS06-10-40-154）

Dimensions（CS06-10-40-154）