(KL Series) SCHOTT 154.202 Double Rigid Gooseneck Light Guide — Ø 4.5mm / 600mm

The SCHOTT 154.202 is a 2-branch (dual) semi-rigid gooseneck fiber optic light guide used to deliver directional light from a remote KL-series light source to the inspection zone. Dual goosenecks are a preferred setup when you need precise aiming and repeatable contrast for microscopy, visual inspection, and camera-based imaging.

Accessory note: This is a light guide (fiber optic). It does not generate light by itself and must be connected to a compatible SCHOTT KL-series light source.

Specifications:

Manufacturer: SCHOTT
Part number / SKU: 154.202
Type: 2-branch (dual) rigid/semi-rigid gooseneck light guide
Branch length: 600 mm (23.62")
Active Ø (each branch): 4.5 mm (0.18")
End tip Ø: 6 mm (0.24")
End tip length: 20 mm (0.79")
Active common end Ø: 6.4 mm (0.26")
Outer Ø (jacketing): 11 mm (0.43")
Light source adapter Ø: 10 mm (0.39")
Construction notes: “Flex & Stay” style positioning; black lacquered semi-rigid gooseneck tubing
Quantity option: 1 Light Guide
Compatibility (store listing): KL Series (KL 1600 / KL 2500) — also referenced for KL 1500 on page text
Availability: 2–3 Weeks
Weight: 2.00 lbs

SCHOTT 154.202 Features

Precise positioning: place light exactly where you need it—then it stays put
Dual-branch control: set one branch as raking light and one as fill light for balanced contrast
Near shadow-free option: opposing branch angles can reduce harsh one-sided shadows
Durable handling: semi-rigid gooseneck tubing supports daily workstation adjustment

Why teams choose a dual gooseneck light guide

Directional contrast: reveal surface texture, scratches, haze, edge chips, or residue with raking light
Repeatable inspection: mark branch locations + light-source setpoints to reduce shift-to-shift variation
Less station disruption: aim the light instead of moving the microscope, camera, or part

Common System Pairing

The 154.202 is part of the SCHOTT KL Series ecosystem. Common pairings in your catalog include:

About the Manufacturer:

SCHOTT is a multinational technology group known for specialty glass, advanced materials, and precision components used across optical, industrial inspection, and life-science workflows. In microscopy illumination, SCHOTT’s KL ecosystem pairs durable light sources with modular light guides (goosenecks, flexible branches, and ringlights) so teams can standardize illumination geometry and maintain repeatable inspection conditions.

Related Light Guides & Alternatives

Notes: For best results, document (1) branch angles, (2) tip-to-part distance, and (3) light-source output setpoint. This reduces inspection drift and makes your station repeatable across shifts.

For application support, call 800-443-7101 or email Sales@SOSsupply.com.

Product page updated: Feb. 6, 2026 (SOS Technical Staff)

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The Technical Vault: SCHOTT 154.202 Dual Rigid Gooseneck Light Guide (Ø 4.5mm / 600mm)

Vault purpose: How dual goosenecks control contrast, how to lock geometry for repeatability, and how to avoid the two failure modes: “washed out” vs “too harsh.”

1) What the 154.202 is

The SCHOTT 154.202 is a 2-branch semi-rigid gooseneck fiber optic light guide that delivers illumination from a compatible KL-series light source to two independently aimable outputs. This format is used when directional control is the primary requirement and illumination needs to be repeatable across shifts.

2) Dual-branch strategy: “rake + fill”

Raking branch: low angle to amplify topography—scratches, haze, edge chips, residues.
Fill branch: higher angle to prevent black shadows and stabilize camera exposure.
Opposed aiming: branches positioned in opposite directions can reduce harsh one-sided shadows while maintaining usable contrast.

3) Repeatability checklist (what to document)

Most “we can’t reproduce what the other shift saw” issues are illumination geometry issues. Lock these three variables:

Tip-to-part distance: define a target range and keep it consistent.
Branch angles: record clock positions relative to the part (e.g., 10 o’clock + 2 o’clock).
Light source setpoint: record output level used for pass/fail judgments.

Fast control tip: Put a small witness mark on each gooseneck and the mount/fixture so the “approved” position can be reset after cleaning or maintenance.

4) How the physical specs impact station behavior

Ø 4.5 mm active branches: common “precision aiming” diameter—fits tight spaces while maintaining useful output.
600 mm length: keeps the work envelope manageable and reduces tangles vs longer flexible guides.
Semi-rigid gooseneck tubing: improves “stays where you put it” performance compared with fully flexible sheaths.
10 mm adapter interface: standard connection size for KL-series light sources.

5) Flexible vs rigid vs ringlight (selection guide)

Rigid dual gooseneck (154.202): best when you need stiffness, precision aiming, and repeatable geometry.
Flexible dual (155.204): best when operators must frequently reposition branches and route around fixtures.
Ringlight: best when uniform, low-shadow illumination is the goal and you want to minimize operator aiming variability.

Compare related options: 155.204 Dual Flexible, 157.410 Ringlight 58mm, 157.420 Ringlight 66mm.

6) Source basis (spec traceability)