Optoma Original Lens BX-CTA20 Semi-Wide Zoom (Standard Throw)

The Optoma BX-CTA20 Semi-Wide Zoom is an original (OEM) lens for Optoma installation projectors, belonging to the Standard Throw category with a throw ratio of 1.20-1.50:1. This article compiles its 9 compatible projector models, optical specifications, and purchasing considerations, allowing you to quickly verify compatibility by projector model.

Specifications

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

BX-CTA20 Semi-Wide Zoom Compatible Projector Models (9 Models, with Brightness/Resolution)

The following are verified compatible models for the BX-CTA20 Semi-Wide Zoom, each listed with brightness and resolution; the applicable lens model for all is BX-CTA20 Semi-Wide Zoom:

Note: Brightness/resolution data is taken from the model database (refer to the unit's nameplate/manual for 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-CTA20 Semi-Wide Zoom Lens

The BX-CTA20 Semi-Wide Zoom is a Standard Throw lens manufactured by Optoma. Its optical construction, lens coatings, and body tolerances are all matched to original equipment standards, ensuring plug-and-play installation and stable imaging performance. For installation environments with limited projection distance (such as short-distance large-screen projection or wall-mounted ultra-short-throw setups), selecting the correct throw ratio is more critical than choosing a generic lens.

This lens has a throw ratio of 1.20-1.50:1. 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. 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 and Purchasing Information

Zorsika supplies the genuine Optoma original lens BX-CTA20 Semi-Wide 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 OEM channels, with original packaging and serial numbers. For bulk projects, channel documentation can be requested to rule out refurbished units or unverified sources.
• Compatibility Verification: Provide your projector model before ordering, and Zorsika technical staff will cross-check it against the compatible model list above to ensure a proper fit.
• Project Supply: The BX-CTA20 Semi-Wide Zoom covers 9 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 against OEM standards, allowing you to choose based on your needs.

Note: Actual imaging performance is affected by the projector's 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 machine, 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 unit, offering advantages in budget and lead time. Zorsika supplies both options, so 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; this article lists verified compatible models. Projectors from the same generation and brand often share the same mount. If uncertain, it is safer to take a photo of the unit's nameplate and send it to Zorsika technical support for confirmation.

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 short distances in small 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-CTA20 Semi-Wide Zoom is genuine?

A: Zorsika supplies genuine products through OEM channels, with original packaging and traceable serial numbers; for bulk projects, channel documentation can be requested 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, always power off the projector and wait for the cooling fan to stop; hold the lens by the barrel without touching the glass, and use a blower for dust. After installation, test focus first before tightening the locking screws, and clean the mount and contacts as you go.

Q: How long is the lens warranty?

A: Zorsika offers a 12-month warranty on all projector lenses; 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 and Compatible Model Lookup
• Projector Lamp / Lens / Air Filter Product Library

Purchasing Consultation

For consultation on the Optoma original lens BX-CTA20 Semi-Wide Zoom, project proposals, or a 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.