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9.
Setup
9.1 setup example of the optical system
Fig. 15 and Fig. 16 show examples of optical system setup using LCOS-SLM. Example 1 is an optical
system using a half mirror. Example 2 shows a grazing incidence optical system. Example 2 has the
advantage of less light loss due to the half mirror than Example 1.
Fig.15 Setup Example 1
Advice: Using an aperture with a circular aperture of Φ = 12 mm or less produces a good focused image.
Fig.16 Setup Example 2
Advice: The incidence angle θ of the oblique incidence optical system in Example 2 should be within 5°.
Advice: In the case of the oblique incidence optical system of Example 2, the incident light should be
incident with horizontal polarization (Note).
Note) Horizontal polarization is the direction of polarization parallel to a plane containing incident and
reflected light.
Advice: Please note that damage caused by the addition of incident light exceeding the light resistance
intensity is not covered by the warranty. Contact our company for information on light resistance.
Warning
Watch out for reflected light.
Warning
Note the reflected light due to the diffracted light caused by
the pixel diffraction.
Laser
Special filter
Collimating lens
Aperture
Half mirror
LCOS-SLM
Head
Fourier transform
Lens
Output
Polarization
direction
Readout
light
Output
Fourier
Transform lens
LCOS-SLM
Head
