PASCO's Basic Optics System is easy to use, affordable, and ruggedly designed for both geometric bench optics and table ray optics investigations. Large 50 mm diameter optics components are mounted in protective holders that snap directly onto the aluminum track, and they are easy to slide and reposition. Built-in metric tape makes measurements of image and object distances quick and accurate for both lenses and mirrors. The versatile Light Source doubles as a table-top ray box, for studies in reflection, refraction, color addition, and Snell's Law. All the components (except the track) fit in the included custom protective foam storage box.

Experiments Included

  • Color Addition
  • Prism
  • Reflection
  • Snell's Law
  • Total Internal Reflection
  • Convex and Concave Lenses
  • Hollow Lens
  • Lensmaker's Equation
  • Apparent Depth
  • Reversibility
  • Dispersion
  • Focal Length and Magnification of a Thin Lens
  • Focal Length and Magnification of a Concave Mirror
  • Virtual Images
  • Telescope
  • Microscope
  • Shadows


  • OpticsTrack (1.2 m): Lens holders, mirrors, light source, and viewing screen snap into this rugged aluminum optics track. The metric tape makes position measurements easy. Optical alignment is always a snap.
  • Light Source: Has a lighted crossed arrow target with metric scale for focusing images through lenses or using with the concave mirror. Acts as a point light source, 1, 3, or 5parallel rays, or red-green-blue rays.
  • Lenses: 4 - 50 mm diameter lenses - focal lengths +100, +200, +250, -150 mm mounted in protective holders
  • Concave/Convex Mirror: 50 mm diameter plastic mirror with reflective surface on both sides. Includes "half-screen" upon which the image is focused.
  • Adjustable Lens Holder: Use your own lenses (from 19 mm to 75 mm in diameter) or choose from our lens sets.
  • Ray Optics Kit: Concave/convex lenses, concave/convex/plane mirrors, acrylic rhomboid prism for spreading white light and refraction experiments, hollow lens for teaching the lensmaker's equation. Storage tray functions as a water tank for the hollow lens.
  • Ray Table: Two-piece construction allows the table to rotate for studying Snell’s Law or the Law of Reflection. Includes D-shaped acrylic lens.
  • Viewing Screen: White plastic screen snaps into the optics bench - the position of the screen is visible on the bench scale.
  • Experiment Manual: The experiment guide includes 17 ready-to-use optics experiments with teacher notes and sample data.
  • Storage Box: Everything fits neatly into the protective storage box, with the exception of the 1.2 meter Optics Track.


Aperture Accessories -- Basic Optics
Accessory Lens Set -- Basic Optics
Product Name Part Number Price Qty. Select
Aperture Accessories -- Basic Optics   OS-8524
Accessory Lens Set -- Basic Optics   OS-8519

Replacement Parts

Spares Kit -- Basic Optics
Product Name Part Number Price Qty. Select
Spares Kit -- Basic Optics   OS-8510

Buying Guide

Expand Your System
Adjustable Focal Length Lens
Product Name Part Number Price Qty. Select
Adjustable Focal Length Lens   OS-8494