At a glance
- Specifications
- Where It Works: List of 6 Compatible Models (with Parameters)
- What Zorsika Lenses Offer You
- What to Watch Out for When Replacing a Lens
- Frequently Asked Questions
- Q: My machine isn't on the list of 6 models above. Can I use the WK281 (<18K Lumens)?
- Q: Can the lens replace the original one?
- Q: Why choose Zorsika instead of the original?
- Q: What if the lens doesn't match the screen size?
- Q: Is there an installation guide for the WK281 (<18K Lumens)?
- Q: How long is the lens warranty?
- Related Query Links
- Procurement Inquiry
Zorsika WK281 ( < 18K Lumens) projector lens, matched to original optical specifications, compatible with DWU1800-JS, DWU2400-JS, 4K1600-JS, 4K2100-JS and 6 Christie projector models.
WK281 (<18K Lumens) is a lens compatible with Christie and other brands of large-venue projectors. This article compiles a list of its 6 compatible projector models and selection notes.

Specifications
| Lens Model | WK281 (<18K Lumens) |
| Compatible Brand | Christie |
| Compatible Model Brightness | 10050–23750 lumens |
| Compatible Model Resolution | WUXGA 1920×1200, 4K (3840×2160), 4K UHD+ (3840×2400) |
| Zoom Ratio | 0.78-0.9:1 • 0.9-1.3:1 • 1.3-1.8:1 • 1.44-1.8:1• 1.8-2.4:1 • 2.4-4.8:1 • 4.8-8.64:1 • 8.64-12.96, 0.34-0.37:1 140-164102-XX 0.5-0.65:1 140-166104-XX 0.78-0.9:1 140-144100-XX 0.9-1.3:1 140-159106-XX 1.25-2.0:1 140-165103-XX 1.8-2.4:1 140-110103-XX 2.4-4.8:1 140-111104-XX 4.8-8.64:1 140-116109-XX |
| Throw Ratio | 0.38:1 |
| Compatible Panel Size | 0.80 inch |
| Number of Compatible Models | 6 |
The above parameters come from the Zorsika product database. For the complete technical specification sheet, please contact sales.
Where It Works: List of 6 Compatible Models (with Parameters)
Below are the verified compatible models for the WK281 (<18K Lumens) (Christie projectors), with brightness, resolution, and zoom ratio listed for each:
| Projector Model | Brightness | Resolution | Zoom Ratio |
|---|---|---|---|
| DWU1800-JS | 17800 lumens | WUXGA 1920×1200 | 0.78-0.9:1 • 0.9-1.3:1 • 1.3-1.8:1 • 1.44-1.8:1• 1.8-2.4:1 • 2.4-4.8:1 • 4.8-8.64:1 • 8.64-12.96 |
| DWU2400-JS | 23750 lumens | WUXGA 1920×1200 | 0.78-0.9:1 • 0.9-1.3:1 • 1.3-1.8:1 • 1.44-1.8:1• 1.8-2.4:1 • 2.4-4.8:1 • 4.8-8.64:1 • 8.64-12.96 |
| 4K1600-JS | — | — | — |
| 4K2100-JS | 21350 lumens | 4K (3840×2160) | 0.78-0.9:1 • 0.9-1.3:1 • 1.3-1.8:1 • 1.44-1.8:1• 1.8-2.4:1 • 2.4-4.8:1 • 4.8-8.64:1 • 8.64-12.96 |
| 4K1400-KS | 14250 lumens | 4K UHD+ (3840×2400) | 0.34-0.37:1 140-164102-XX 0.5-0.65:1 140-166104-XX 0.78-0.9:1 140-144100-XX 0.9-1.3:1 140-159106-XX 1.25-2.0:1 140-165103-XX 1.8-2.4:1 140-110103-XX 2.4-4.8:1 140-111104-XX 4.8-8.64:1 140-116109-XX |
| 4K1000-KS | 10050 lumens | 4K UHD+ (3840×2400) | 0.34-0.37:1 140-164102-XX 0.5-0.65:1 140-166104-XX 0.78-0.9:1 140-144100-XX 0.9-1.3:1 140-159106-XX 1.25-2.0:1 140-165103-XX 1.8-2.4:1 140-110103-XX 2.4-4.8:1 140-111104-XX 4.8-8.64:1 140-116109-XX |
Note: Brightness, resolution, and zoom ratio are taken from the Zorsika product database (refer to the model nameplate/manual for accuracy); lens compatibility is subject to the body interface and optical structure. For models not on the list, please contact Zorsika technical support for confirmation.
What Zorsika Lenses Offer You
Zorsika provides OEM-spec replacement lenses for the WK281 (<18K Lumens), with key parameters matched item by item to the original, and supports bulk project procurement and supply.
Zorsika's same-spec replacement model is compatible with 6 models including the Christie DWU1800-JS, DWU2400-JS, 4K1600-JS, 4K2100-JS, and 4K1400-KS; enter WK281 (<18K Lumens) into the query system on the Zorsika official website to find the complete compatible model list.
- Optical matching: Focal length, throw ratio, and lens groups matched to original parameters
- Resolution testing: Each unit tested before leaving the factory, with MTF data available
- Coating process: Lens coatings at the same grade as the original, reducing light loss
- Stable supply: Supports bulk procurement and project supply
In one sentence: The lens is the optical core — don't gamble on image quality to save a few dollars. Zorsika projector lenses are produced according to original drawings, offering a comprehensive advantage.
Note: Actual imaging performance is affected by the condition of the projector body and the installation environment. Before bulk procurement, we recommend ordering 1 unit for testing first.
What to Watch Out for When Replacing a Lens
- Power off before replacing the lens: Be sure to shut down and wait for the cooling fan to stop before removing or installing the lens, to avoid damaging the interface by working with power on.
- Don't touch the lens elements: Fingerprints and oil smudges directly affect image quality. Hold the lens by the barrel, not the glass; use an air blower to gently remove dust, and do not wipe dry with a cloth.
- Focus before tightening: After installing in place, focus and test first, then tighten the fixing screws, to avoid image drift caused by loosening over long-term use.
- Keep the interface clean: Dust buildup on the mount and contacts can cause poor contact. Cleaning them while replacing the lens is a safer approach.
Frequently Asked Questions
Q: My machine isn't on the list of 6 models above. Can I use the WK281 (<18K Lumens)?
A: The list covers verified models, not all of them. Same-brand, same-generation large-venue projectors often share lens interfaces. It's safer to take photos of the body nameplate and the original lens and send them to Zorsika technical support for confirmation.
Q: Can the lens replace the original one?
A: The lens is the core of the projector's optical path and directly determines clarity and color. Zorsika lenses (model numbers as in the specification table above) are matched item by item to original optical parameters (focal length, throw ratio, lens groups), with the same lens coating process, delivering sharp imaging with no soft edges; ordinary replacement lenses often use ordinary glass elements with insufficient coating layers, making brightness loss and color shift obvious at a glance. For large-venue and exhibition scenarios, Zorsika is recommended as the first choice.
Q: Why choose Zorsika instead of the original?
A: Zorsika lenses are produced according to original optical drawings, with lens groups, coatings, and throw ratios matched item by item, and each unit undergoes resolution testing before leaving the factory. Compared with the original, lead times are shorter and the overall value is better; compared with other replacement lenses, optical quality is backed by data.
Q: What if the lens doesn't match the screen size?
A: First confirm the model's lens interface and optical axis position, then choose a lens with the corresponding throw ratio based on the actual installation distance. If unsure, send the installation distance and screen size to Zorsika technical support, and we'll help you choose.
Q: Is there an installation guide for the WK281 (<18K Lumens)?
A: Yes. The lens removal and installation steps for Christie models like these are basically the same. Contact Zorsika sales to obtain illustrated or video instructions for the corresponding model.
Q: How long is the lens warranty?
A: All Zorsika projector lenses come with a 12-month warranty; under normal use, non-human-caused damage (such as impact, water damage, or unauthorized disassembly) can be handled directly through after-sales service. The warranty period is based on the date on the shipping document.
Related Query Links
- Zorsika Technical Support Center
- Projector Brand and Compatible Model Query
- Projector Lamp / Lens / Air Filter Product Library
Procurement Inquiry
For solution consultation, project proposals, or the complete compatible model list for the Zorsika WK281 (<18K Lumens), please contact us via:
- Website: www.zorsika.com
- Phone: 0086-20-38551187
- Email: sales@zorsika.com
- Business Hours: Monday to Friday, 9:00-18:00
The lens models and compatible model data in this article come from the Zorsika product database. Data is continuously updated; please refer to actual quotation confirmation.