Description
JR Instruments Fiber Optic Microscope Ring Light 90mm OD 53mm ID 41" Cable
This is a fiber optic ring light assembly from JR Instruments, designed to provide even, shadow-free annular illumination for stereo and inspection microscopes. The assembly consists of a rigid black aluminum ring mount with a flexible armored fiber optic cable that connects to a separate light source. The ring clips or mounts beneath a microscope objective, delivering circumferential light directly onto the subject. No light source or power supply is included — this cable and ring assembly requires a compatible fiber optic illuminator.
Specifications & What's Included
- Brand: JR Instruments (Tel. 310-398-7951 visible on label)
- Type: Fiber Optic Flex Cable Ring Light / Annular Ring Illuminator
- Total overall length: approximately 41 inches
- Flex cable length: approximately 36 inches
- Input light tip: 12mm long × 13mm diameter
- Ring outer diameter (OD): 90mm
- Ring inner diameter (ID): 53mm
- Cable construction: flexible armored stainless steel sheath over fiber bundle
- Ring mount color: black anodized aluminum
- Mounting: adjustable thumbscrews on ring for clamping to microscope stand or objective collar
- Light source: NOT included — connects to a separate fiber optic illuminator
- Includes: ring light and flex cable assembly only
Applications
Fiber optic ring lights are standard illumination accessories for stereo microscopes and low-power inspection microscopes used in electronics assembly, PCB inspection, jewelry, biological sample prep, and quality control. The annular ring design surrounds the objective and floods the work area with even, diffuse light, eliminating the harsh shadows that direct top lighting creates. The flexible armored cable carries light from a remote light source — typically a halogen or LED fiber optic illuminator — keeping heat away from the specimen. The 90mm OD ring is a common size compatible with a wide range of stereo microscope stands and third-party ring light adapters. JR Instruments was a California-based manufacturer of microscope accessories and illumination products active in the 1980s–2000s era, and their fiber optic ring lights remain compatible with standard fiber optic light sources still in common lab use today.
This JR Instruments fiber optic microscope ring light is in good used condition. The ring mount and armored flex cable are intact with normal wear consistent with lab use — light surface scuffing on the ring body is visible in the photos. The unit was illuminated for display in our photos to confirm light transmission through the fiber cable and ring, and it lit up as expected. Note that no light source or power supply is included — this is the ring and cable assembly only. Please review our full photo set and contact us with any questions.
Warranty Information
Additional Information
Brand: |
JR Instruments |
Model: |
Fiber Optic Ring Light |
Type: |
Fiber Optic Microscope Ring Light |
SKU: |
46739 |
Ring OD: |
90mm |
Ring ID: |
53mm |
Total Length: |
41 inches (approx.) |
Cable Length: |
36 inches (approx.) |
Input Light Tip Diameter: |
13mm |
Input Light Tip Length: |
12mm |
Cable Type: |
Flexible Armored Fiber Optic Cable |
Color: |
Black |
Light Source Included: |
No — requires separate light source |
Application: |
Stereo / Inspection Microscope Illumination |
Mounting: |
Ring Mount with adjustable thumbscrews |
Seller Notes: |
Ring light and flex cable only — no light source or power supply included. |
Country/Region of Manufacture: |
United States |
Condition Notes: |
This JR Instruments fiber optic microscope ring light is in good used condition with normal lab wear. Illuminated for display to confirm light transmission. Ring and cable only — no light source included. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
