At a glance
- Specifications
- BX-CTA08 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 can I confirm this lens works with my projector?
- Q: How do I choose the throw ratio?
- Q: How can I ensure the BX-CTA08 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-CTA08 Zoom, standard throw, throw ratio 1.25-2.00:1, compatible with 3 Optoma projectors including ZK1000, ZK1120, ZK1320. Genuine supply, bulk orders available for projects.
The Optoma BX-CTA08 Zoom is an original (OEM) lens for Optoma installation projectors, classified as a Standard Throw lens with a throw ratio of 1.25-2.00:1. This article compiles its 3 compatible projector models, optical specifications, and purchasing considerations for quick compatibility verification by projector model.

Specifications
| Lens Model | BX-CTA08 Zoom |
| Brand (OEM) | Optoma (Optoma) |
| Throw Ratio | 1.25-2.00:1 |
| 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; a complete technical datasheet is available upon request from our sales team.
BX-CTA08 Zoom Compatible Projector Models (3 Models with Brightness/Resolution)
The following are verified compatible projector models for the BX-CTA08 Zoom, each with brightness and resolution; the applicable lens model for all is BX-CTA08 Zoom:
| Projector Model | Brightness | Resolution | Lens Model |
|---|---|---|---|
| ZK1000 | 10000 lumens | 3840x2400 | BX-CTA08 Zoom |
| ZK1120 | 11500 lumens | 4K (3840×2160) | BX-CTA08 Zoom |
| ZK1320 | 13500 lumens | 4K (3840×2160) | BX-CTA08 Zoom |
Note: Brightness/resolution data is taken from the model database (refer to the nameplate/user manual for final confirmation); lens compatibility is determined by the projector's lens mount and panel/chip size. For models not listed, please contact Zorsika technical support for verification.
About This Original Lens
Optoma BX-CTA08 Zoom Lens
The BX-CTA08 Zoom is a Standard Throw lens manufactured by Optoma. Its optical structure, lens coatings, and body tolerances are matched to original projector standards, ensuring plug-and-play installation and stable imaging. For installations with restricted projection distances (e.g., short-distance large images, wall-mounted ultra-short throw), selecting the correct throw ratio is more critical than choosing a generic lens.
This lens has a throw ratio of 1.25-2.00:1. 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 genuine Optoma original lenses BX-CTA08 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 official authorized channels, with original packaging and serial numbers. For bulk projects, channel documentation can be provided upon request to eliminate refurbished or unverified units.
- Compatibility Verification: Provide the projector model before ordering, and Zorsika technical staff will confirm compatibility against the list above to avoid installation issues.
- Project Supply: The BX-CTA08 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 the original, allowing you to choose based on your needs.
Note: Actual imaging performance is affected by projector condition and installation environment; for large orders, it is recommended to test one unit first.
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 body tolerances calibrated to the original projector, making them 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, offering advantages in budget and lead time. Zorsika can supply both options; choose based on your project requirements.
Q: How can 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 uncertain, sending a photo of the nameplate to Zorsika technical support for confirmation is the safest approach.
Q: How do I choose the throw ratio?
A: Throw ratio = projection distance ÷ image width. A smaller value produces a larger image (short-throw/ultra-short-throw suits 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's focal range.
Q: How can I ensure the BX-CTA08 Zoom is genuine?
A: Zorsika supplies genuine products through authorized channels, complete with original packaging and traceable serial numbers; for bulk projects, channel documentation can be provided to ensure the lens is not refurbished or a used pulled part.
Q: What should I pay attention to when replacing the lens?
A: Always power off the projector and wait for the cooling fan to stop before disassembly; 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 offers a 12-month warranty on all projector lenses; for normal use and non-man-made damage (e.g., impact, water ingress, unauthorized disassembly), contact after-sales service directly. The warranty period is based on the shipping invoice 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-CTA08 Zoom, project proposals, or the complete list of compatible models, 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 final confirmation during inquiry.