Optoma Original Lens BX-CTA18 Short Zoom: Standard Throw, Compatible with 4 Projectors

The Optoma BX-CTA18 Short Zoom is an original (OEM) lens for Optoma installation projectors. It belongs to the standard throw category with a throw ratio of 0.84-1.02:1. This article covers its 4 compatible projector models, optical specifications, and purchasing considerations, allowing you to quickly verify compatibility by projector model.

Specifications

The specifications above are sourced from OEM documentation and the Zorsika product database; a full technical datasheet is available upon request from our sales team.

BX-CTA18 Short Zoom Compatible Projector Models (4 models, with brightness/resolution)

The following are verified compatible projector models for the BX-CTA18 Short Zoom, each with brightness and resolution; the compatible lens model for all is BX-CTA18 Short Zoom:

Note: Brightness/resolution data is taken from the model database (refer to the unit's nameplate/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-CTA18 Short Zoom Lens

The BX-CTA18 Short Zoom is an original standard throw lens manufactured by Optoma. Its optical construction, lens coatings, and body tolerances are all matched to original machine standards, ensuring plug-and-play installation and stable imaging. For installations with limited projection distance (such as short-distance large-screen setups or ultra-short-throw wall-mounted configurations), choosing the correct throw ratio is more critical than opting for a generic lens.

This lens offers a throw ratio of 0.84-1.02:1. Throw ratio = projection distance ÷ image width: a smaller value produces a larger image (ideal for close-range, compact spaces), while a larger value requires a greater installation distance. Work backward from your on-site installation distance and screen size to determine the required throw ratio range, then match it to this model.

Genuine Product & Purchasing Information

Zorsika supplies the genuine Optoma original lens BX-CTA18 Short 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 requested to eliminate refurbished units or unverified sources.
• Compatibility Verification: Provide your projector model before ordering, and Zorsika technical staff will confirm compatibility against the model list above to avoid installation issues.
• Project Supply: The BX-CTA18 Short Zoom covers 4 projector models; common projects can be scheduled in advance to shorten lead times.
• Alternative Options: If budget is a concern, Zorsika also offers equivalent alternative lenses with key specifications benchmarked against 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, we recommend testing one unit first.

FAQ

Q: How do I choose between an original lens and an alternative lens?

A: Original lenses are manufactured by Optoma with optical parameters and body tolerances calibrated to original machine standards, making them ideal for projects with strict OEM consistency requirements. Zorsika alternative 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 supplies both options — choose based on your project requirements.

Q: How can I confirm this lens works with my projector?

A: Verify against the projector's lens mount and panel/chip size; this article lists verified compatible models. Projectors of the same generation and brand often share the same mount. If unsure, photograph the unit's nameplate and send it to Zorsika technical support for confirmation — 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 is ideal for close-range, compact spaces), while a larger value requires a greater installation distance. Work backward from your installation distance and screen size to determine the required throw ratio range, then match it to this model's focal range.

Q: How can I ensure the BX-CTA18 Short Zoom is genuine?

A: Zorsika supplies genuine products through authorized channels, complete with original packaging and traceable serial numbers; channel documentation can be requested for bulk projects to ensure the lens is not refurbished or a used pull.

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 removing or installing the lens; hold the lens barrel without touching the glass elements, 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: All Zorsika projector lenses come with a 12-month warranty; for normal use and non-man-made damage (such as impacts, water ingress, or unauthorized disassembly), contact after-sales service directly. The warranty period is based on the shipping document date.

Related Inquiry Links

• Zorsika Technical Support Center
• Projector Brand & Compatible Model Lookup
• Projector Lamp / Lens / Air Filter Product Library

Purchasing Inquiries

For consultation on the Optoma original lens BX-CTA18 Short Zoom, project proposals, or the full 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; final confirmation is subject to actual quotation verification.