01
Set up Lens Simulator
Choose convex or concave lens mode, then enter focal length, object distance, and object height.
- Start with a convex lens and an object beyond the focal length
- Switch to concave lens mode to see a virtual upright image
Free Lens Simulator
Lens Simulator change focal length and object position to see image formation in real time
Lens Simulator turns thin-lens image formation into a live browser lab: choose a convex or concave lens, set focal length, object distance, and object height, then watch the ray diagram and calculations update instantly.
Built for ray diagrams, thin lens equation practice, image distance, magnification, upright or inverted images, and real or virtual image checks.
Lens Simulator interactive ray diagram
Start Lens Simulator here: enter lens type, focal length, object distance, and object height to calculate image distance, magnification, image height, orientation, and real or virtual image type.
Lens Simulator controls
Choose a lens, move the object, and adjust focal length or height to update the ray diagram in real time.
Share Lens Simulator
Share the clean page or copy a result link that restores this Lens Simulator setup.
Ray diagram lab
Convex lens
Live Lens Simulator result
Lens Simulator image status
Image type Real image
Orientation Inverted
Size Reduced
Thin-lens equation
Lens Simulator calculations
Signed focal length
15.0 cm
Image distance
26.3 cm
Magnification
-0.75
Image height
-3.0 cm
Lens Simulator conclusion
Lens Simulator experiment notes
Move the object across the focal point or switch to a concave lens to compare real, virtual, upright, inverted, enlarged, and reduced images.
Lens Simulator uses the thin-lens equation with the common sign convention: converging lenses have positive focal length, diverging lenses have negative focal length, real images have positive image distance, and virtual images have negative image distance.
Lens Simulator ray diagram workflow
Lens Simulator connects lens type, focal length, object distance, object height, image distance, magnification, image size, and image orientation in one visual workflow.
Lens Simulator live controls
Choose convex or concave lens mode, then change focal length, object distance, and object height while Lens Simulator redraws the principal rays.
Lens Simulator image comparison
Move the object across the focal point in Lens Simulator to compare real and virtual images, upright and inverted images, and enlarged or reduced image size.
Lens Simulator quick guide
Use this Lens Simulator guide to turn the thin-lens equation and ray tracing rules into repeatable image-formation practice.
02
Change Lens Simulator variables
Move the object or change focal length one step at a time. Lens Simulator updates the image distance, magnification, and ray diagram immediately.
- Place the object at 2F to see a same-size inverted image
- Move inside F to create a virtual upright image
03
Explain Lens Simulator results
Use the image distance sign, magnification sign, and image height to describe whether the image is real or virtual, upright or inverted, enlarged or reduced.
For homework, state the sign convention before interpreting the image type.
Read FAQLens Simulator features
These Lens Simulator features make thin-lens image formation visible, adjustable, and easy to explain.
Lens Simulator lens modes
Switch between convex and concave lens setups without rebuilding the ray diagram.
Lens Simulator live ray diagram
Watch principal rays, focal points, object arrow, and image arrow update as inputs change.
Lens Simulator image calculator
Calculate image distance, magnification, and image height with sign-aware results.
Lens Simulator orientation check
See whether the image is upright or inverted from the sign of magnification.
Lens Simulator image type check
Use positive or negative image distance to identify real and virtual images.
Lens Simulator sharing
Copy a result link that restores lens type, focal length, object distance, and object height.
Lens Simulator study use cases
Lens Simulator helps learners connect formula signs, ray diagrams, and image descriptions instead of memorizing cases.
Lens Simulator for students
Practice thin-lens equation questions and check ray diagram intuition before quizzes.
StudyLens Simulator for teachers
Demonstrate how object position and focal length change image location, size, and orientation.
ClassroomLens Simulator for labs
Preview real and virtual image cases before using optical benches or lenses in class.
Lab prepLens Simulator for review
Compare convex and concave lens results with a fast browser-based ray diagram.
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Lens Simulator FAQ
Fast answers about Lens Simulator ray diagrams, thin-lens equation signs, image distance, magnification, orientation, and real or virtual images.
Is Lens Simulator free?
Yes. Lens Simulator runs in the browser and can be used without an account or installation.
What formula does Lens Simulator use?
Lens Simulator uses the thin-lens equation 1/f = 1/do + 1/di and magnification m = -di / do.
How does Lens Simulator decide real or virtual image?
Lens Simulator marks the image as real when image distance is positive and virtual when image distance is negative under the lens sign convention.
How does Lens Simulator decide upright or inverted?
Lens Simulator uses magnification: positive magnification means upright, and negative magnification means inverted.
Can Lens Simulator show a concave lens?
Yes. Lens Simulator includes a concave lens mode with negative focal length, so learners can compare diverging lens behavior with convex lens cases.
Start Lens Simulator now
Open Lens Simulator, choose a lens type, enter focal length, object distance, and object height, then watch the ray diagram change.
Use the live image distance, magnification, image height, orientation, and real or virtual image labels to explain the optical result.
Lens Simulator keeps shared results in an explicit copied URL only.