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US 2026/0026686 A1Published application
Slit lamp microscope spatial light modulator and low-pass filtering
AssigneeHaag-Streit AG
InventorsJörg BREITENSTEIN, Claudio DELLAGIACOMA, Lucio ROBLEDO
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Abstract
The slit lamp microscope includes a microscope device projecting an object plane into an eyepiece or a camera as well as an illumination device with a spatial light modulator. The illumination device includes a beam splitter acting as a low-pass filter in order to suppress the spatial frequency of the pixels of the light modulator and to generate a more homogeneous illumination. In other embodiments, an actuator may be used to deflect at least part of the illumination imaging optics for generating a low-pass filtered image of the spatial light modulator.
Claims21
A slit lamp microscope comprising:
- i) a microscope device projecting an object plane into at least one of an eyepiece or a camera and
- ii) an illumination device having
- a) at least one light source,
- b) an electronically controlled spatial light modulator comprising an array of pixel modulators extending along first and second dimensions (x, y), wherein said pixel modulators have spatial frequencies fx and fy along the first and second dimensions (x, y), and
- c) illumination imaging optics projecting the array towards the object plane,
- wherein the illumination device comprises a low-pass filter attenuating at least one of the spatial frequencies fx and fy in the object plane.
3 more elements
Dependencies are inferred from the claim text.