W-VIEW GEMINI-2C Image splitting optics A12801-10

Dual channel optics are simple… in principle. In practice, designing a device that enables quick, stable alignment and delivers images with minimal distortions over a large field of view requires attention to detail. The W-VIEW GEMINI-2C gets the details right and more. Building on our imaging and optical experience, the W-VIEW GEMINI-2C is the first dual camera, dual channel system engineered with super resolution quality, while simultaneously offering versatility, expandability and ease of use. The W-VIEW GEMINI-2C turns a simple optical concept into an elegant and useful tool that can help maximize the information content of every image acquisition.


Custom Designed Lenses Optimized for Fluorescent Imaging

Using custom designed optics, our engineers fully optimized system performance, offering super resolution quality by minimizing point spread function (PSF) degradation, field curvature and wave front aberration

Wide Field of View (20 mm for standard imaging, 12 mm for diffraction-limited imaging)

Maintaining optical quality at the edges of the field demands extra care. The W-VIEW GEMINI-2C delivers excellent performance over the entire field of two ORCA-Flash4.0 sCMOS cameras and diffraction-limited performance within the center 12 mm diameter FOV.

Ultra-Low Distortion (0.05%), High Spatial Uniformity (98%), High Transmission (98 % @ 450 nm to 800 nm)

This unmatched level of optical performance delivers bright, even, chromatic aberration-corrected images to both cameras.


a12801-10 product feature1

Dual Channel x, y, z and Rotational Alignment

The W-VIEW GEMINI-2C makes alignment easy and stable. Included alignment software provides direct visual feedback when using Hamamatsu cameras. An optional grid chart fits directly into the primary imaging plane making it possible to align images in the absence of feedback at the sample position.

Standard Filters and (Dichroic) Beamsplitters

All filter and beamsplitter holders are designed to industry standard specifications, allowing researchers to freely choose their optical components.

Bypass and Camera Switching Mode

It’s easy to bypass all the optics of the W-VIEW GEMINI-2C, simply remove the filters and beamsplitter and insert the port covers. In addition, by using a 100 % mirror instead of a beamsplitter, the W-VIEW GEMINI-2C can be used to switch between two different cameras.

C-mount Compatibility

With input and output C-mounts, the W-VIEW GEMINI-2C is compatible with and easily attached to standard inverted microscopes.

Light path

a12801-10 Light path


  • Lightsheet, Single Molecule Imaging and Super Resolution Microscopy
  • Tri-Color and Quad-Color Imaging
  • Modular Design Supports Expansion into Engineered Point Spread Function Imaging
  • Enabling engineered PSF Imaging with the W-VIEW GEMINI-2C



Product number  A12801-10 
Structure  Dual camera, parallel arrangement for inverted microscopes 
Input mount  C-mount, female 
Output mount  C-mount, male 
Relay lens magnification  1.0x 
Relay lens focal length  130 mm 
Field of view*6  φ20 mm
φ12 mm (Diffraction limitted)*3 
Field of view, diffraction limited*7  φ12 mm 
Bypass mode  Yes 
Transmittance wavelength range*1  450 nm to 800 nm 
Maximum transmittance (Typ.)*2  98 % 
Dichroic mirror size  25.1 x 35.5 to 26.1 x 38.1 
Dichroic mirror thickness*8  0.9 mm to 3.1 mm 
Band-pass and ND filter size  φ25.4 
Band-pass and ND filter tolerance  +0 mm, -0.6 mm 
Max thickness of band pass and ND filters*9  6 mm 
Longitudinal chromatic aberration correcting mechanism  Yes 
Lateral chromatic aberration correcting mechanism  Optional 
Mirror image inversion  No 
X-Y position adjustment  Yes 
Rotational adjustment  Yes 
Distortion (typ.)*4  0.05 % 
Lateral color shift (typ.)*4,5  6 μm 
Uniformity (typ.)*3  98 % 
Ambient operating temperature  0 ℃ to +40 ℃ 
Ambient storage temperature  -10 ℃ to +50 ℃ 
Ambient operating and storage humidity  70 %max. (With no condensation) 

*1: When in bypass mode
*2: Peak wavelength in bypass mode
*3: Min/max difference of images obtained with and without W-VIEW GEMINI-2C optics ORCA-Flash4.0 V3 camera used for imaging
*4: Values calculated without objective lens
*5: Amount of peripheral position shift when aligned at center
*6: Vignetting may occur if used with relay or variable magnification lens
*7: Simulation value for 0.025 imaging side N.A. of objective lens
*8: Recommend 3 mm thick, high flatness on reflection side; typically called “imaging grade”
*9: Sum of bandpass and ND filters used 



a12801-10 dimensional outline

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W-VIEW GEMINI-2C Extended Focus Device A12802-35 series 123KB
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