At a glance
- Compatible projector models: 1 LG projector (with brightness, resolution, and zoom ratio)
- Specifications
- Frequently Asked Questions
- Q: What if the lens doesn't match the picture size?
- Q: My projector isn't on the list of 1 model above — can I use WE621?
- Q: Can the lens replace the original manufacturer's?
- Q: Why choose Zorsika instead of the original manufacturer?
- Q: How long is the lens warranty?
- What Zorsika Lenses Offer You
- What to Watch Out for When Changing Lenses
- Related Links
- Purchase Inquiry
Zorsika WE621 projector lens, matched to original optical specs, compatible with BU70QGA and 1 LG projector model.


Picture too small or installation distance not enough? A different lens solves it. WE621 fits 1 LG projector model — see the list below.
Zorsika WE621 Projector LensCompatible projector models: 1 LG projector (with brightness, resolution, and zoom ratio)
Below are the verified compatible projector models for WE621 (LG projectors), with brightness, resolution, and zoom ratio for each:
| Projector Model | Brightness | Resolution | Zoom Ratio |
|---|---|---|---|
| BU70QGA | 7000 lumens | 4K (3840×2160) | 1.6x |
Note: Brightness, resolution, and zoom ratio are taken from the Zorsika product database (refer to the model nameplate/manual for accuracy); lens compatibility is based on the body interface and optical structure. For models not listed, contact Zorsika technical support for confirmation.
Specifications
| Lens Model | WE621 |
| Compatible Brand | LG |
| Compatible Model Brightness | 7000 lumens |
| Compatible Model Resolution | 4K (3840×2160) |
| Zoom Ratio | 1.6x |
| Throw Ratio | 0.5-0.6:1 |
| Applicable Panel Size | 0.67 inch |
| Number of Compatible Models | 1 |
The above parameters come from the Zorsika product database. For the complete technical specification sheet, contact sales to request it.
Frequently Asked Questions
Q: What if the lens doesn't match the picture size?
A: First confirm the model's lens interface and optical axis position, then choose a lens with the corresponding throw ratio based on your actual installation distance. If unsure, send your installation distance and screen size to Zorsika technical support and we'll help you choose.
Q: My projector isn't on the list of 1 model above — can I use WE621?
A: The list covers verified models only, not all possibilities. Engineering projectors of the same brand and generation often share the same lens interface. It's safer to send a photo of the nameplate and original lens to Zorsika technical support for confirmation.
Q: Can the lens replace the original manufacturer's?
A: The lens is the core of the projector's optical path, directly determining clarity and color. Zorsika lenses (model numbers as shown in the specifications table above) are benchmarked item by item against the original manufacturer's optical parameters (focal length, throw ratio, lens group), with the same lens coating process, delivering sharp imaging with no soft edges. Ordinary replacement lenses often use standard glass elements with insufficient coating layers, resulting in visible brightness loss and color shift. For engineering and exhibition scenarios, Zorsika is recommended.
Q: Why choose Zorsika instead of the original manufacturer?
A: Zorsika lenses are produced according to the original manufacturer's optical drawings, with lens groups, coatings, and throw ratios benchmarked item by item, and each unit undergoes resolution testing before shipment. Compared to the original manufacturer, lead times are shorter and overall value is better; compared to other replacement lenses, optical quality is backed by data.
Q: How long is the lens warranty?
A: All Zorsika projector lenses come with a 12-month warranty. For normal use and non-human damage (such as impact, water damage, or unauthorized disassembly), you can contact after-sales service directly. The warranty period is based on the date on the shipment document.
What Zorsika Lenses Offer You
WE621 is a commonly used lens for projects. Zorsika benchmarks it item by item against the original manufacturer's parameters, performs resolution testing on each unit before shipment, and backs optical quality with data.
Zorsika's equivalent replacement model, compatible with LG BU70QGA and 1 other model; enter WE621 in the Zorsika official website query system to see the complete model compatibility list.
- Optical Benchmarking: Focal length, throw ratio, and lens group matched to original manufacturer parameters
- Resolution Testing: Each unit tested before shipment, with MTF data available
- Coating Process: Lens coatings at the same level as the original manufacturer, reducing light loss
- Stable Supply: Supports bulk purchasing and project supply
In short: the lens is the optical core — don't gamble on picture quality to save a few dollars. Zorsika projector lenses are produced according to original manufacturer drawings, offering better overall value.
Note: Actual imaging performance depends on the projector's condition and installation environment. Before bulk purchasing, we recommend getting 1 unit for testing first.
What to Watch Out for When Changing Lenses
- Power off before changing the lens: Always shut down and wait for the cooling fan to stop before removing or installing the lens to avoid damaging the interface while powered on.
- Don't touch the lens elements: Fingerprints and oil directly affect image quality. Hold the lens by the barrel, not the glass. If there's dust, use an air blower gently — don't wipe with a cloth.
- Focus before tightening: After installation, test focus first, then tighten the fixing screws to avoid picture drift from loosening over time.
- Keep the interface clean: Dust on the mount and contacts can cause poor connections. Cleaning them while changing the lens is a good practice.
Related Links
- Zorsika Technical Support Center
- Projector Brand and Compatible Model Lookup
- Projector Lamp / Lens / Air Filter Product Database
Purchase Inquiry
For Zorsika WE621 solution consultation, project proposals, or the complete model compatibility list, 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 model and compatible model data in this article come from the Zorsika product database. Data is continuously updated; please confirm with an actual inquiry.