At a glance
- Specifications
- BX-CTA12 Zoom Compatible Projector Models (3 models with brightness/resolution)
- About This Original Lens
- Genuine Product and Purchasing Information
- FAQ
- Q: How do I choose between an original lens and a replacement lens?
- Q: How do I confirm this lens works with my projector?
- Q: How do I select the throw ratio?
- Q: How can I ensure the BX-CTA12 Zoom is genuine?
- Q: What should I pay attention to when replacing the lens?
- Q: What is the warranty period for the lens?
- Related Inquiry Links
- Purchasing Consultation
Optoma original lens BX-CTA12 Zoom, standard throw, ratio 0.90-1.30:1, compatible with ZK1000, ZK1120, ZK1320 and 3 other Optoma projectors. Genuine supply, bulk procurement available for projects.
The Optoma BX-CTA12 Zoom is an original (OEM) lens for Optoma installation projectors, belonging to the standard throw category with a throw ratio of 0.90-1.30:1. This article compiles its 3 compatible projector models, optical specifications, and purchasing considerations for quick compatibility verification by projector model.

Specifications
| Lens Model | BX-CTA12 Zoom |
| Brand (OEM) | Optoma (Optoma) |
| Throw Ratio | 0.90-1.30:1 |
| Product Type | Standard Throw |
| Number of Compatible Models | 3 models |
| OEM Product Page | Optoma Official Introduction |
The above specifications are sourced from OEM documentation and the Zorsika product database; the full technical datasheet is available upon request from our sales team.
BX-CTA12 Zoom Compatible Projector Models (3 models with brightness/resolution)
The following are verified compatible projector models for the BX-CTA12 Zoom, each with brightness and resolution; the applicable lens model for all is BX-CTA12 Zoom:
| Projector Model | Brightness | Resolution | Lens Model |
|---|---|---|---|
| ZK1000 | 10000 lumens | 3840x2400 | BX-CTA12 Zoom |
| ZK1120 | 11500 lumens | 4K (3840×2160) | BX-CTA12 Zoom |
| ZK1320 | 13500 lumens | 4K (3840×2160) | BX-CTA12 Zoom |
Note: Brightness/resolution data is taken from the model database (refer to the unit's nameplate/manual for accuracy); lens compatibility is determined by the projector's lens mount and panel/chip size. For models not listed, please contact Zorsika technical support for confirmation.
About This Original Lens
Optoma BX-CTA12 Zoom Lens
The BX-CTA12 Zoom is a standard throw lens manufactured by Optoma as an OEM product. Its optical structure, lens coatings, and housing tolerances are matched to original machine standards, ensuring plug-and-play installation and stable imaging. For installation environments with restricted projection distance (e.g., short-distance large images, ultra-short throw near walls), selecting the correct throw ratio is more critical than choosing a generic lens.
This lens has a throw ratio of 0.90-1.30:1. Throw ratio = projection distance ÷ image width: a smaller value produces a larger image (ideal for short distances in small spaces), while a larger value requires a greater installation distance. Calculate the required throw ratio range based on your installation distance and screen size, then match it to this model.
Genuine Product and Purchasing Information
Zorsika supplies the genuine Optoma original lens BX-CTA12 Zoom through authorized channels, complete with original packaging and traceable serial numbers, suitable for bulk procurement and project supply for installation projectors, conference rooms, classrooms, and similar applications.
- Genuine Product Guarantee: Sourced through authorized OEM channels, with original packaging and serial numbers; channel documentation can be provided for bulk projects to eliminate refurbished or unverified units.
- Compatibility Verification: Provide your projector model before ordering, and Zorsika technical staff will confirm against the compatible model list above to avoid installation issues.
- Project Supply: The BX-CTA12 Zoom covers 3 projector models; common projects can be scheduled in advance to shorten lead times.
- Alternative Options: If budget is a concern, Zorsika also offers equivalent replacement lenses with key specifications benchmarked to OEM standards, available as needed.
Note: Actual imaging performance is affected by projector condition and installation environment; it is recommended to test 1 unit before large-volume orders.
FAQ
Q: How do I choose between an original lens and a replacement lens?
A: Original lenses are manufactured by Optoma, with optical parameters and housing tolerances calibrated to original machine standards, ideal for projects with strict requirements for OEM consistency. Zorsika replacement lenses are independently designed and manufactured to the same specifications, with throw ratio, image circle, and mount matched to the original machine, offering advantages in budget and lead time. Zorsika can supply both options; choose based on your project requirements.
Q: How do I confirm this lens works with my projector?
A: Compatibility is determined by the projector's lens mount and panel/chip size; verified compatible models are listed in this article. Projectors of the same generation and brand often share the same mount; if unsure, photograph the nameplate and send it to Zorsika technical support for confirmation.
Q: How do I select the throw ratio?
A: Throw ratio = projection distance ÷ image width. A smaller value produces a larger image (short-throw/ultra-short-throw suits close-range small spaces), while a larger value requires greater installation distance. Calculate the required throw ratio range based on installation distance and screen size, then match it to this model's focal range.
Q: How can I ensure the BX-CTA12 Zoom is genuine?
A: Zorsika supplies genuine products through OEM channels, with original packaging and traceable serial numbers; channel documentation can be provided for bulk projects to ensure the lens is not refurbished or a used disassembled unit.
Q: What should I pay attention to when replacing the lens?
A: Before disassembly, power off the projector and wait for the cooling fan to stop; hold the lens barrel without touching the glass, and use a blower for dust. After installation, test focus before tightening the locking screws, and clean the mount and contacts as you go.
Q: What is the warranty period for the lens?
A: Zorsika provides a 12-month warranty on all projector lenses; normal use and non-man-made damage (e.g., impact, water ingress, unauthorized disassembly) can be handled directly through after-sales service. The warranty period is based on the shipping document date.
Related Inquiry Links
- Zorsika Technical Support Center
- Projector Brand and Compatible Model Lookup
- Projector Lamp / Lens / Air Filter Product Library
Purchasing Consultation
For consultation on the Optoma original lens BX-CTA12 Zoom, project proposals, or the complete compatible model list, please contact us through the following channels:
- 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 data in this article are sourced from OEM documentation and the Zorsika product database; data is continuously updated and subject to confirmation at the time of inquiry.