---
title: "2.4 USB / UVC Iriscope (Dino-Lite)"
description: "PupilMetrics has deep integration with the **Dino-Lite AM4115ZT** and compatible iriscope models. #### Windows (Dino-Lite via DNVideoX) **Prerequisites** - Install the Dino-Lite **DNVideoX** ActiveX driver from the Dino-Lite website before the first use. - Connect the iriscope via USB before…"
url: "https://cnri.edu/docs/2-4-usb-uvc-iriscope-dino-lite/"
updated: "2026-03-24"
category: Capturing Eye Images
---

# 2.4 USB / UVC Iriscope (Dino-Lite)

PupilMetrics has deep integration with the **Dino-Lite AM4115ZT** and compatible iriscope models.

#### Windows (Dino-Lite via DNVideoX)

**Prerequisites**

- Install the Dino-Lite **DNVideoX** ActiveX driver from the Dino-Lite website before the first use.
- Connect the iriscope via USB before launching PupilMetrics.

**How it works**
PupilMetrics launches a lightweight background bridge process (`dinolite_bridge.exe`) that communicates with the iriscope via the DNVideoX COM interface. The live preview is displayed in the app.

**Capturing**

- **MicroTouch button** (recommended): Press the physical button on the Dino-Lite barrel. The image is captured instantly and the app advances to the next eye.
- **On-screen button**: Tap the capture button in the app if the physical button is not accessible.

**LED control**
The iriscope LED ring can be toggled and brightness adjusted directly from the capture screen.

**Troubleshooting**

| Symptom | Fix |
| --- | --- |
| No camera detected | Unplug and reconnect the USB cable; restart the app |
| Black preview | DNVideoX driver not installed; install from Dino-Lite website |
| MicroTouch button unresponsive | Wait 2 seconds after the preview appears for the button to arm |

#### Android (Dino-Lite via USB OTG)

Connect the iriscope to your Android device using a **USB OTG adapter**. The app automatically detects the device on the UVC camera screen. A connection status indicator appears at the top of the capture screen. Capture using the on-screen shutter button.

> **Note:** USB OTG must be supported and enabled on your Android device.