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Adaptive MultiSpectral Fundus Imager

 

TECHNICAL SPECIFICATION:

 

angular field of view

20×15 градусов

 

manual compensation
of ametropia

20 D

 

adaptive compensation
of ametropia

3 D

 

image sensor dimensions

30x20 mm

 

image resolution

3000х2000 pixels
(4000х4000 optional)

 

intensity levels

12 bit

 

image capture rate

1 fps

 

optical resolution

<3.6 m (in the center)

 

aberration measurement

36 Zernike polynomials

 

maximum aberration amplitude

20 λ

 

measurement accuracy

λ/15

 

typical time of aberration
measurement and compensation

24 ms

 

optical filters

green, red, blue, narrow bands selectable

 

focusing:

coarse
fine

 

manual
automatic (adaptive compensation)

 

illumination type

donut illumination with polarization-based
corneal reflection suppression

 

distance from patient eye

>45 mm

 

retina illumination

<6105 lux (<50 ms) (photographing)
<900 lux (alignment lamp)

 

light source

 fiber-optic
 32 steps of exposition settings
 255 intensity levels for alignment lamp

 

reference source wavelength

0,785 m

 

alignment camera resolution

640×480 pixels

 

auto focusing system

18-electrode bimorph mirror
with Shack-Hartmann wavefront sensor

 

power source

 120/240 V
  50/60 Hz

 

power consumption

 optical unit: < 150W
 illumination unit: <400W

 

dimensions of optical unit

350×550×650 mm

 

 weight of optical unit

<40 kg

 

 

See also: Retinal Diagnostic Instruments with Adaptive Optics