At a glance
- Specifications
- BX-CTA23 Extra Long Zoom Compatible Projector Model List (9 Models, with Brightness/Resolution)
- About This Original Lens
- Authenticity and Procurement Information
- Frequently Asked Questions
- Q: How to choose between an original lens and an alternative lens?
- Q: How can I confirm this lens will work with my projector?
- Q: How to choose the throw ratio?
- Q: How can I ensure the BX-CTA23 Extra Long Zoom is authentic?
- Q: What should I pay attention to when replacing a lens?
- Q: What is the warranty period for the lens?
- Related Inquiry Links
- Procurement Inquiry
Optoma original lens BX-CTA23 Extra Long Zoom, long throw, throw ratio 4.00-7.20:1, compatible with 9 Optoma projectors including WU1500, ZK1000, ZK1050, ZK1120. Authentic channel supply, available for bulk project procurement.
The Optoma BX-CTA23 Extra Long Zoom is an original (OEM) lens for Optoma engineering projectors. It is a long throw lens with a throw ratio of 4.00-7.20:1. This article compiles its 9 compatible projector models, optical parameters, and procurement details to facilitate quick compatibility checks based on the machine model.

Specifications
| Lens Model | BX-CTA23 Extra Long Zoom |
| Brand (OEM) | Optoma (Optoma) |
| Throw Ratio | 4.00-7.20:1 |
| Product Type | Long Throw |
| Number of Compatible Models | 9 |
| OEM Product Page | Optoma Official Introduction |
The above parameters are sourced from OEM materials and the Zorsika product database. For the complete technical datasheet, please contact sales.
BX-CTA23 Extra Long Zoom Compatible Projector Model List (9 Models, with Brightness/Resolution)
The following are verified compatible projector models for the BX-CTA23 Extra Long Zoom, each listed with brightness and resolution. The compatible lens model for all is BX-CTA23 Extra Long Zoom:
| Projector Model | Brightness | Resolution | Lens Model |
|---|---|---|---|
| WU1500 | 11000 Lumens | 1920x1200 | BX-CTA23 Extra Long Zoom |
| ZK1000 | 10000 Lumens | 3840x2400 | BX-CTA23 Extra Long Zoom |
| ZK1050 | 11000 Lumens | 4K (3840×2160) | BX-CTA23 Extra Long Zoom |
| ZK1120 | 11500 Lumens | 4K (3840×2160) | BX-CTA23 Extra Long Zoom |
| ZK1320 | 13500 Lumens | 4K (3840×2160) | BX-CTA23 Extra Long Zoom |
| ZK750 | 7500 Lumens | 4K (3840×2160) | BX-CTA23 Extra Long Zoom |
| ZU1700 | 17000 Lumens | WUXGA 1920×1200 | BX-CTA23 Extra Long Zoom |
| ZU1900 | 19000 Lumens | WUXGA 1920×1200 | BX-CTA23 Extra Long Zoom |
| ZU2200 | 25000 Lumens | WUXGA 1920×1200 | BX-CTA23 Extra Long Zoom |
Note: Brightness/resolution data is taken from the model database (subject to the nameplate/manual on the projector body). Lens compatibility is determined by the projector's lens mount and panel/chip size. For models not on this list, please contact Zorsika technical support for confirmation.
About This Original Lens
Optoma BX-CTA23 Extra Long Zoom Lens
The BX-CTA23 Extra Long Zoom is a long throw lens produced by Optoma. Its optical structure, lens coatings, and body tolerances are matched to the original projector standards, ensuring plug-and-play installation and stable imaging. For installation environments with limited projection distance (e.g., projecting a large image from a short distance, or ultra-short throw setups close to the wall), selecting the correct throw ratio is more critical than choosing a universal lens.
This lens has a throw ratio of 4.00-7.20:1. Throw Ratio = Projection Distance ÷ Image Width: A smaller value produces a larger image (suitable for short distances in small spaces), while a larger value requires a greater installation distance. Calculate the required throw ratio range based on the on-site installation distance and screen size, then match it to this model.
Authenticity and Procurement Information
Zorsika supplies the Optoma original lens BX-CTA23 Extra Long Zoom through authentic channels, with original packaging and verifiable serial numbers. It is suitable for bulk procurement and project supply for engineering projectors, conference rooms, classrooms, and similar projects.
- Authenticity Guarantee: Sourced through official OEM channels with original packaging and serial numbers. For bulk projects, channel credentials can be provided upon request to eliminate refurbished units and sources of unknown origin.
- Compatibility Verification: Provide the projector model number before ordering. Zorsika technical support will verify it against the compatible model list above to avoid installation issues.
- Project Supply: The BX-CTA23 Extra Long Zoom covers 9 models. For frequently used projects, scheduling in advance can shorten lead times.
- Alternative Solutions: If budget is a concern, Zorsika can also provide alternative lenses with the same specifications. Key parameters are benchmarked against the OEM product; choose as needed.
Note: Actual imaging performance is affected by the projector's condition and installation environment. For large-volume orders, it is recommended to first obtain one unit for testing.
Frequently Asked Questions
Q: How to choose between an original lens and an alternative lens?
A: The original lens is manufactured by Optoma. Its optical parameters and body tolerances are calibrated to the original projector, making it suitable for projects with strict requirements for OEM consistency. Zorsika alternative lenses are independently designed and manufactured to the same specifications, with throw ratio, image circle, and mount benchmarked against the original, offering advantages in budget and lead time. Zorsika can supply both lines; choose based on project requirements.
Q: How can I confirm this lens will work with my projector?
A: Compatibility is determined by the projector's lens mount and panel/chip size. This article lists verified compatible models. Projectors of the same generation and brand often share mounts. If unsure, taking a photo of the projector's nameplate and sending it to Zorsika technical support for confirmation is the safest approach.
Q: How to choose the throw ratio?
A: Throw Ratio = Projection Distance ÷ Image Width. A smaller value produces a larger image (short/ultra-short throw is suitable for short distances in small spaces), while a larger value requires a greater installation distance. Calculate the required throw ratio range based on the installation distance and screen size, then match it to the focal range of this model.
Q: How can I ensure the BX-CTA23 Extra Long Zoom is authentic?
A: Zorsika supplies authentic products through OEM channels, with original packaging and verifiable serial numbers. For bulk projects, channel credentials can be provided upon request to ensure the units are not refurbished or second-hand parts.
Q: What should I pay attention to when replacing a lens?
A: Before disassembly, be sure to turn off the projector and wait for the cooling fan to stop. Hold the lens by the barrel, avoiding contact with the lens elements. Use a blower to gently remove any dust. After installation, perform a focus test before tightening the mounting screws, and take the opportunity to clean the mount and contacts.
Q: What is the warranty period for the lens?
A: Zorsika provides a 12-month warranty for all projector lenses. For normal use and non-human-caused damage (such as impact, water ingress, or unauthorized disassembly), you can directly contact after-sales service. The warranty period is based on the date of the shipping documents.
Related Inquiry Links
- Zorsika Technical Support Center
- Projector Brand and Compatible Model Inquiry
- Projector Lamp / Lens / Air Filter Product Database
Procurement Inquiry
For solution consultation, project planning, or the complete compatible model list for the Optoma original lens BX-CTA23 Extra Long Zoom, please contact us via:
- Official 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 projector model data in this article are sourced from OEM materials and the Zorsika product database. The data is continuously updated and is subject to confirmation upon actual inquiry.