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Light Guide Demonstrator
Light Guide Demonstrator (Product Code: SLE/PHY/231) is an S-shaped acrylic bar used to demonstrate total internal reflection and the principle behind optical fibres in school physics optics lessons. Measuring 220 x 20 x 20 mm, it is used with a raybox, and the bottom of the bar is painted white to aid visibility of the light path. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Shape | 'S' shaped bar |
| Material | Acrylic |
| Dimensions | 220 x 20 x 20 mm |
| Finish | Bottom of the bar painted white to aid visibility |
| Light source | Used with a raybox (listed separately) |
| Demonstrates | Total internal reflection; principles of optical communications |
| Product code | SLE/PHY/231 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Light Guide Demonstrator Used For?
When a raybox beam is directed into one end of the bar, the light does not leak out at the bends. Each time it meets the acrylic surface at a large enough angle it is totally internally reflected, so it zig-zags along the S-shape and emerges from the far end. Students can see that light can be guided around corners, which is exactly how optical fibres carry telephone and internet signals.
For the clearest view, dim the room lights and align the beam squarely with the end face; the white-painted base helps the reflected path stand out. Wipe the acrylic with a soft, clean cloth and store it where it will not be scratched, because surface marks let light escape. It is a simple, durable piece of optics lab equipment for school and college physics departments across India.
OEM Manufacturer
Jain Scientific Equipments Private Limited trades as ScienceLab and is the OEM (original equipment manufacturer) of the Light Guide Demonstrator. The company is incorporated under CIN U29309HR2020PTC087597, and production takes place at the company's licensed factory at 449, HSIIDC Industrial Area, Saha, Ambala (Factory Licence AMB-ONLINE-CHD-J-414). Because the demonstrator is made by the manufacturer itself rather than bought from a trader, schools, colleges, dealers and importers receive it factory-direct, and replacement bars or repeat orders can be discussed with us directly. Read more on the ScienceLab company profile.
Related Physics Lab Equipment
Items used alongside the light guide in optics practicals:
- Raybox, 12V — the ray light source needed to send a beam into the bar.
- Raybox Mirrored with Accessories — a raybox with channels for slit plates and colour filters.
- Prism – Acrylic, Set of 7 — includes a semi-circular block for critical-angle work.
- Prism – Glass Rectangular Block — for tracing refraction through glass.
- Light Energy Kit — activities on reflection, refraction and other properties of light.
Browse the complete Physics Lab Equipment range.
Frequently Asked Questions
What does the Light Guide Demonstrator show?
The Light Guide Demonstrator shows total internal reflection: light entering one end of the curved acrylic bar is reflected inside it and follows the S-shape to the other end. This helps students understand the principles of optical communications and how optical fibres guide light.
What size and material is the Light Guide Demonstrator?
The Light Guide Demonstrator is an S-shaped acrylic bar measuring 220 x 20 x 20 mm. The bottom of the bar is painted white to aid visibility, so the path of the light inside the bar is easier for a class to follow.
Is a raybox included with the Light Guide Demonstrator?
The Light Guide Demonstrator is the acrylic bar itself and is designed to be used with a raybox, which is listed as a separate product. If you need both, ask us through the contact page to quote the bar and a raybox together.
Who manufactures the Light Guide Demonstrator?
The Light Guide Demonstrator is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Buyers deal directly with the maker for quotations, repeat orders and replacement bars.
How should the Light Guide Demonstrator be cared for?
Keep the Light Guide Demonstrator clean and scratch-free: wipe it with a soft cloth, avoid abrasive cleaners, and store it separately from metal apparatus. Scratches on the acrylic surface let light escape and weaken the total internal reflection effect.
Can the Light Guide Demonstrator be ordered in bulk for several labs?
Yes, the Light Guide Demonstrator can be quoted in class-set quantities for schools, institutions, dealers and importers in India and international markets. State the quantity and delivery location in your enquiry and the quotation will come directly from the manufacturer.
Request a Quote
For the Light Guide Demonstrator (SLE/PHY/231), send your requirement through the ScienceLab contact page or add it to the enquiry cart; quotations come straight from the manufacturer in Ambala.
Last updated: 24 September 2026
