The SL-D4 is part of Topcon’s D-Series Digital Slit Lamps. It can be used as a conventional examination instrument or with the several imaging options. SL-D4 has the same product features as SL-D2, except for the magnification. SL-D4 slit lamp has two more magnifications: 6x, 10x, 16x, 25x and 40x.
Used as a conventional examination slit lamp, the SL-D4 incorporates three filters: a blue filter, red free filter and an amber filter. The amber filter improves the contrast and colour of retinal images.
| MICROSCOPE: | |
| Type | Galilean type |
| Magnification Selection | 3 step by drum rotation |
| Eyepiece | 12.5x |
| Magnification Step | 6x / 10x /16x /25x / 40x |
| Magnification Ration (Field of View) | 6x (φ35.1mm) |
| 10x (φ22.5mm) | |
| 16x (φ14.1mm) | |
| 25x (φ8.8mm) | |
| 40x (φ5.6xmm) | |
| Diopter Adjustment Range | -5D to +5D |
| SLIT ILLUMINATION: | |
| Slit Width |
Continuous from 0 mm to 14 mm (14 mm circle)
|
| Slit Length |
Continuous from 1 mm to 14 mm (14 mm circle)
|
| Aperture Diameter | φ14, 10, 5, 2, 1, 0.2 mm |
| Slit Direction | Side swing |
| Filter | Blue, Red-Free, Amber, UV Cut (normal use), IR Cut (normal use) |
| Illumination Lamp | Halogen |

Topcon DC-4 Digital Camera

BG-2GN Background Illumination

Yellow Filter

Observation Tube

PG-1 Patient Grip