This document is a complete selection guide for the Zorsika WK091 ultra-short throw projector lens, covering 5 compatible models of APPOTRONICS (APPOTRONICS), complete specifications (throw ratio 0.46:1, MTF -), a comparison table of overall specifications of each projector when equipped with this lens, key selection and installation tips, and frequently asked questions. For other lens models, please visit the Zorsika official website www.zorsika.com.
Zorsika WK091 Ultra-Short Throw Projector Lens
Zorsika WK091 Why the Lens Remains a Focus for Purchasers
The Zorsika WK091 is an ultra-short throw projector lens (throw ratio 0.46:1), covering 5 mainstream APPOTRONICS projector models. The most common challenges purchasers face during selection are: high OEM lens prices, unstable supply cycles; inconsistent quality of aftermarket lenses with subpar MTF/resolution. Zorsika addresses this pain point by offering a replacement lens solution with the same specifications as the OEM, all optically tested and free replacement for non-artificial damage within the warranty period.
Zorsika WK091 Projector Lens Specifications
The following are the specifications for the Zorsika WK091 lens itself (from official data at zorsika.com):
| Parameter | Value |
|---|---|
| Throw Ratio | 0.46:1 |
Zorsika WK091 Compatible Projector Models (5 models)
The Zorsika WK091 lens is compatible with the following APPOTRONICS projector models. The table below shows the overall specifications of each APPOTRONICS projector when equipped with the Zorsika WK091 lens. These parameters reflect the actual performance after the lens is paired with the projector body:
| Projector Model | Resolution | Brightness | Lens Zoom Ratio |
|---|---|---|---|
| AL-FU905 | - | - | - |
| AL-FU805 | - | - | - |
| AL-FU705 | - | - | - |
| AL-FU10K | - | - | - |
| AL-FU715 | - | - | - |
Key Points to Avoid Pitfalls in Selection and Installation
1. Confirm the throw ratio and installation distance: Calculate the required throw ratio based on room depth and target screen size. The optimal installation distance for an ultra-short throw lens is within 0.5 meters to project a 100-inch screen.
2. Check the lens shift range: Before installation, ensure the horizontal/vertical shift margin of the projector position to avoid image spillover or inability to center.
3. Confirm lens mount compatibility: The Zorsika WK091 lens uses the standard mount for APPOTRONICS projectors. Please confirm with the sales team that your projector model is on the compatibility list before purchasing.
According to the Zorsika official maintenance manual, the Zorsika WK091 lens requires no special maintenance under normal use. It can operate stably for a long time as long as it is protected from severe vibration and high temperatures. For detailed optical specifications and compatible models, please visit the lens-None page on the Chinese website at zorsika.com.
Additional Notes on Zorsika WK091
As an ultra-short throw lens for Zorsika projectors (Zorsika projector UST lens), the Zorsika WK091 is compatible with 5 mainstream APPOTRONICS projector models. Lenses are precision optical components that play a key role in the optical system of projectors, responsible for light path transmission and image formation. All lenses provided by Zorsika undergo MTF testing (modulation transfer function test) and focus accuracy calibration to ensure the full presentation of 4K resolution (4K resolution). To view lenses of other brands or focal lengths, please visit www.zorsika.com.
Related reading: Projector Lens Library · All APPOTRONICS Models · Lens Compatibility Check
FAQ — Zorsika WK091 Frequently Asked Questions
Q: What does the throw ratio of the Zorsika WK091 lens mean?
A: Throw ratio = projection distance / image width. The smaller the value, the larger the image can be projected from the same distance. The Zorsika WK091 has a throw ratio of 0.46:1, which is an ultra-short throw lens. It is recommended to calculate the achievable screen size based on your installation distance or consult Zorsika sales for selection calculation assistance.
Q: Which projector models are compatible with the Zorsika WK091 lens?
A: The Zorsika WK091 lens is compatible with 5 APPOTRONICS projector models. Please refer to the "Compatible Projector Models" table in this article. To confirm whether a specific model is compatible, please contact Zorsika sales with a photo of the projector's nameplate, and we will verify the lens-body match for you.
Q: What does the MTF (Modulation Transfer Function) of the lens represent?
A: MTF (Modulation Transfer Function) reflects the lens's ability to reproduce details. Higher values mean sharper images. Professional projector lenses generally require MTF >50% @93lp/mm. The MTF specification of the Zorsika WK091 lens is -. In 4K projection applications, MTF is a key indicator for determining whether the lens truly supports 4K resolution.
Q: How to choose between an ultra-short throw lens and a short throw lens?
A: The core difference between ultra-short throw (0.46:1) and short throw (typically 0.4-1.0:1) is installation distance: ultra-short throw can project a 100-inch screen from 0.3-0.5 meters, suitable for desktop interaction and electronic whiteboard replacement; short throw requires 1-2 meters, suitable for ceiling mounting above classroom blackboards. If the room depth is less than 2 meters, ultra-short throw is recommended. If the depth is 2-4 meters, short throw offers better cost-effectiveness.
Q: What is the installation method for the Zorsika WK091 lens?
A: The Zorsika WK091 lens uses the standard lens mount for APPOTRONICS projectors. Insert it into the lens bay and rotate clockwise to lock. The entire process takes about 30 seconds. For on-site installation support, you can contact Zorsika sales engineers for in-person service.
Purchasing Inquiries
To learn more about the specifications, pricing, or alternative solutions for the Zorsika WK091 lens, please contact the Zorsika sales team. We offer 1-on-1 selection consultation, technical specification comparisons, and on-site installation support.
- Website: www.zorsika.com
- Phone: 020-38551187
- Email: sales@zorsika.com
- Business Hours: Monday to Saturday 9:00-18:00
Data Source Statement
All lens models, specifications, and compatible model data in this article are sourced from: zorsika.com official product page and the Zorsika database.