Optoma BX-CTA28 Short Zoom Ultra Short Throw Lens Analysis: ZK1000 ZK1120 ZK1320 Compatibility

The Optoma BX-CTA28 Short Zoom is an original (OEM) lens for Optoma engineering projectors. It is an Ultra Short Throw lens with a throw ratio of 0.34-0.37:1. This article compiles its 3 compatible projector models, optical parameters, and procurement details to facilitate quick compatibility checks based on the machine model.

Specifications

The above parameters are sourced from OEM materials and the Zorsika product database. For the complete technical datasheet, please contact sales.

BX-CTA28 Short Zoom Compatible Projector Model List (3 models, with Brightness/Resolution)

The following are verified compatible projector models for the BX-CTA28 Short Zoom, each listed with brightness and resolution. The compatible lens model for all is BX-CTA28 Short Zoom:

Note: Brightness/resolution data is taken from the model database (subject to the nameplate/manual on the projector body). Lens compatibility is based on 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-CTA28 Short Zoom Lens

The BX-CTA28 Short Zoom is an Ultra Short Throw lens manufactured by Optoma. Its optical structure, lens coatings, and body tolerances are matched to the original projector specifications, ensuring immediate installation and stable imaging. For installation environments with limited projection distance (e.g., projecting a large image in a short space, 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 0.34-0.37:1. Throw Ratio = Projection Distance ÷ Image Width: a smaller value produces a larger image (suitable for close range 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 authentic Optoma original lens BX-CTA28 Short Zoom through authorized channels, with original packaging and verifiable serial numbers. It is suitable for bulk procurement and project supply for engineering projections, 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 or 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-CTA28 Short Zoom covers 3 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 bulk 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: Original lenses are manufactured by Optoma, with optical parameters and body tolerances calibrated to the original projector, 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 based on the projector's lens mount and panel/chip size. This article lists verified compatible models. Engineering 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 more reliable.

Q: How do I 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 close range 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-CTA28 Short Zoom is authentic?

A: Zorsika supplies authentic products from 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 salvage parts.

Q: What should I pay attention to when replacing the lens?

A: Before disassembly, be sure to power 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 first, then tighten the mounting screws, and clean the mount and contacts while you're at it.

Q: What is the warranty period for the lens?

A: Zorsika offers a 12-month warranty for all projector lenses. For normal use and non-human-induced damage (e.g., impact, water ingress, 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 proposals, or the complete list of compatible models for the Optoma original lens BX-CTA28 Short 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. Data is continuously updated; please confirm with actual inquiry for accuracy.