Handheld Retinal Camera

Versatile and Mobile Fundus Imaging

The SIGNAL handheld retinal camera is a mobile imaging solution for non-mydriatic retinal examination covering the macula and optic disc. True color images and videos offer excellent screening and documentation of the retina, while nine fixation targets offer both central and peripheral imaging. The SIGNAL is ultra-lightweight and compact and has an operating time of up to 5 hours of continuous use.

Key Features

  • FLEXIBILITY – Ultra-lightweight, compact and portable with an operating time of up to 5 hours of continuous use.
  • EASE OF USE – Auto focus function for fast and easy image acquisition, even in difficult-to-image patients.
  • WIDE FIELD OF VIEW – Nine fixation targets offer central and peripheral imaging.
  • EFFICIENCY – Quickly evaluate brightness, reflection, shadowing, and sharpness of the captured images with the image quality analysis tool.
  • OPTIONAL SLIT LAMP MOUNT – Easily add the SIGNAL to a slit lamp with the optional slit lamp mount for increased alignment and positioning stability

Not all products, services or offers are approved or offered in every market, and products vary from one country to another. Contact your local distributor for country-specific information.


• Preview (focusing): Infrared LED
• Capture: visible white LED (10 brightness levels)
• 9 internal red LEDs for fixation targeting

Maxiumum Luminance

3.0 cd/cm2

Field of View


Diopter Compensation

from -20 D to +20 D

Minimum Pupil Size

Ø 3.1 [mm]

Image Sensor

CMOS, 5.0 Megapixels

Image Memory Type

Internal 8 GB memory


4″, TFT-LCD, 800×480 pixels, 16.7 M colors

Image Format

JPEG (file extension: jpg)

Video Format

MPEG-4 (640 x 480)

USB Connectivity

USB 1.1, compatible with USB 2.0 and 3.0

WLAN Connectivity

• 802.11 bgn, wpa2
• Operating frequency range: 2412 – 2472MHz (Channels 1-13)
• Modulation: OFDM (802.11 a/g/n), DSSS/CCK (802.11b)
• Maximum output power: 17.25 dBm
• Maximum antenna gain: 1.9 dBi

Operating Systems

• Microsoft Windows 8.1®, Windows 10® (WLAN and USB)
• MacOS (three latest versions) (USB)

DICOM Conformance

DICOM Compatible


127 (w) x 202 (h) x 240 (d) mm


785 g


• 50001508, 3.65V, 2750 mAh
• Rechargeable Li-Ion battery
• Li-Ion cell with integrated safety circuit

SIGNAL Brochure

SIGNAL – Lens Cleaning Guide