---
title: "ID1 Optical length"
slug: "id1-optical-length"
updated: 2024-07-04T11:00:40Z
published: 2024-07-04T11:00:40Z
canonical: "docs-linescan.alliedvision.com/id1-optical-length"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs-linescan.alliedvision.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ID1 Optical length

## Channels per module

### Reflector type A, B, C, D, H

| Length [mm] | Number of channels | Number of XLC4 control units |
| --- | --- | --- |
| 170 | 1 | 1 |
| 340 | 2 | 1 |
| 510 | 3 | 1 |
| 680 | 4 | 1 |
| 850 | 5 | 2 |
| 1020 | 6 | 2 |
| 1190 | 7 | 2 |
| 1360 | 8 | 2 |

### Reflector type T, U

| Length [mm] | Ultra-high bright version | High bright version |
| --- | --- | --- |
|  | Number of channels | Number of XLC4 control units | Number of channels | Number of XLC4 control units |
| 170 | 4 | 1 | 2 | 1 |
| 340 | 8 | 2 | 4 | 1 |
| 510 | 12 | 3 | 6 | 2 |
| 680 | 16 | 4 | 8 | 2 |
| 850 | 20 | 5 | 10 | 3 |
| 1020 | 24 | 6 | 12 | 3 |
| 1190 | 28 | 7 | 14 | 4 |
| 1360 | 32 | 8 | 16 | 4 |

### Combined Tube light

| Length [mm] | Tube light | Dark field | Bright field |
| --- | --- | --- | --- |
|  | Number of channels |
| 170 | 4 | 2 | 1 |
| 340 | 8 | 4 | 2 |
| 510 | 12 | 6 | 3 |
| 680 | 16 | 8 | 4 |