EXULUS-HD1 & EXULUS-4K1 Spatial Light Modulators Chapter 5: Software Operation
Page 28 CTN008794-D02
Figure 24 Uploaded PNG file in fit position, based on standard frame rate
CGH mode
The Computer Generated Holography (CGH) is a widely used method of digitally generating holographic
interference patterns. The “Spatial Light Modulator” software consists of a fast CGH algorithm in this mode.
Figure 25 CGH Mode area
A user defined image is converted into its holographic pattern within several seconds. The Tilt in both X and Y
orientation and the focal length of generated pattern can also be defined. A small preview window shows the input
image which can be zoomed by clicking on it.
The bit depth of the uploaded image is transferred to 8 bit for both frame rate modes. Also, the image position and
the inversion of black and white can be user defined before generation. The wavelength, which is set at 633 nm as
default, should be set so that it matches the wavelength of the light source.
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