Zorsika WB391 short throw projector lens — 2 models compatible with Sharp + complete specifications

This article is a complete selection guide for the Zorsika WB391 short-throw projector lens, covering 2 compatible Sharp projector models, full specifications (throw ratio 0.60-0.62:1, MTF for 66lp/mm), a comparison table of overall projector specifications when equipped with this lens, key selection and installation tips, and frequently asked questions. For other lens models, please visit the Zorsika official website at www.zorsika.com.

Why the Zorsika WB391 Remains a Top Choice for Buyers

The Zorsika WB391 is a short-throw projector lens (throw ratio 0.60-0.62:1) compatible with 2 mainstream Sharp projector models. Buyers often face challenges during selection: high prices from original manufacturers, unstable supply cycles, inconsistent quality from third-party lenses with substandard MTF/resolution. Zorsika addresses this pain point by offering a replacement lens solution with the same specifications as the original, all fully tested for optical performance. Under warranty, any non-human-made damage is replaced free of charge.

Zorsika WB391 Projector Lens Specifications

The following are the specifications of the Zorsika WB391 lens itself (official data from zorsika.com):

Compatible Projector Models for Zorsika WB391 (2 Models)

The Zorsika WB391 lens is compatible with the following Sharp projector models. The table below shows the overall specifications of each Sharp projector when equipped with the Zorsika WB391 lens. These parameters reflect the actual performance after combining the lens and the projector body:

Key Selection and Installation Tips

1. Confirm throw ratio and installation distance: Calculate the required throw ratio based on room depth and target screen size. The optimal installation distance for this short-throw lens is 1-2 meters for a 100-inch screen.
2. Check lens shift range: Before installation, ensure the projector’s horizontal/vertical lens shift margin is sufficient to avoid image overflow or inability to center the image.
3. Verify mount compatibility: The Zorsika WB391 lens uses the standard Sharp projector mount. Please confirm with our sales team that your projector model is within the compatibility list before purchasing.

According to the Zorsika official maintenance manual, the Zorsika WB391 lens requires no special maintenance under normal use conditions. Avoiding severe vibration and high temperatures ensures long-term stable operation. For detailed optical specifications and compatible models, please visit the Zorsika Chinese website page lens-12137 at zorsika.com.

Additional Notes on the Zorsika WB391

As a Zorsika projector ST lens (short-throw lens), the Zorsika WB391 is compatible with 2 mainstream Sharp projector models. The lens is a precision optical component that plays a key role in the projector's optical system for light transmission and image formation. All lenses provided by Zorsika undergo MTF testing (modulation transfer function test) and focus accuracy calibration to ensure full 4K resolution capability. To view lenses of other brands or focal lengths, please visit www.zorsika.com.

Related reading: Projector Lens Library · All Sharp Models · Lens Compatibility Check

FAQ — Zorsika WB391 Frequently Asked Questions

Q: What does the throw ratio of the Zorsika WB391 mean?

A: Throw ratio = projection distance / screen width. The smaller the ratio, the larger the screen you can project from the same distance. The Zorsika WB391 has a throw ratio of 0.60-0.62:1, making it a short-throw lens. We recommend calculating the achievable screen size based on your installation distance, or consulting Zorsika sales for selection calculations.

Q: Which projector models are compatible with the Zorsika WB391 lens?

A: The Zorsika WB391 lens is compatible with 2 Sharp projector models. For details, please refer to the "Compatible Projector Models" table in this article. To confirm compatibility with a specific model, please contact Zorsika sales and provide a photo of the projector's nameplate. We will verify whether the lens matches the projector body.

Q: What does the lens MTF (Modulation Transfer Function) represent?

A: MTF (Modulation Transfer Function) indicates the lens's ability to reproduce fine details. Higher values mean sharper images. Professional projector lenses generally require MTF >50% @93lp/mm. The Zorsika WB391 lens's MTF specification is for 66lp/mm. In 4K projection applications, MTF is a key indicator for determining whether the lens truly supports 4K resolution.

Q: Is the Zorsika WB391 a short-throw lens suitable for ceiling mounting above a classroom blackboard?

A: Yes. With a throw ratio of 0.60-0.62:1, the Zorsika WB391 typically projects an 80-100 inch screen from an installation distance of 1-1.5 meters. When ceiling mounting, we recommend leaving at least 30cm of maintenance space and ensuring the lens mount aligns with the projector body.

Q: What is the installation method for the Zorsika WB391 lens?

A: The Zorsika WB391 lens uses the standard Sharp projector lens mount. Insert it into the lens compartment and rotate it clockwise to lock it in place. The entire process takes about 30 seconds. For on-site installation support, you can contact Zorsika sales engineers for on-site service.

Purchase Inquiry

For information on the specific configuration, pricing, inventory, or alternative solutions for the Zorsika WB391 lens, please contact the Zorsika sales team. We provide one-on-one selection consultation, technical parameter comparison, and on-site installation support.

• Website: www.zorsika.com
• Phone: 0086-20-38551187
• Email: sales@zorsika.com
• Business Hours: Monday to Saturday 9:00-18:00, replies within 24 hours

Data Source

All lens model numbers, specifications, and compatible projector models in this article are sourced from: zorsika.com official product page and the Zorsika database.