1. What is Projector Throw Distance?

The throw distance is the distance between the projector lens and the screen. It determines how far the projector needs to be placed from the screen to achieve the desired image size.

2. How Does the Calculator Work?

The calculator uses the throw distance formula:

Where:

• \( Screen\ Width \) — Width of the projected image (inches)
• \( Throw\ Ratio \) — Projector's throw ratio specification (dimensionless)

Explanation: The throw ratio is a specification provided by projector manufacturers that indicates the relationship between projection distance and image width.

3. Importance of Throw Distance Calculation

Details: Proper throw distance calculation ensures your projector will fit in your space and produce the desired image size. It's crucial for both home theater setups and professional installations.

4. Using the Calculator

Tips: Enter the desired screen width in inches and the projector's throw ratio (found in the projector's specifications). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a typical throw ratio?
A: Most projectors have throw ratios between 1.0 and 2.0. Short-throw projectors may have ratios below 1.0, while ultra-short-throw can be as low as 0.25.

Q2: How do I measure screen width?
A: Measure the horizontal width of your screen (not diagonal). For 16:9 screens, width = diagonal × 0.87.

Q3: Can I use this for different aspect ratios?
A: Yes, the calculation is based on the actual width of your screen regardless of aspect ratio.

Q4: What if my projector has zoom?
A: Projectors with zoom lenses will have a throw ratio range (e.g., 1.5-2.0). You can calculate minimum and maximum throw distances using this range.

Q5: Does ceiling mounting affect the calculation?
A: No, the throw distance is measured along the projection path, regardless of mounting position. However, vertical offset may need separate consideration.