Christie 121-139105-XX Zoom Original Projector Lens — Long Throw + LWU755-DS, LWU900-DS

The Christie 121-139105-XX Zoom is an original (OEM) lens for Christie professional projectors. It is a Long Throw lens with a throw ratio of 1.70-3.00:1. This article compiles its 2 compatible projector models, optical specifications, and purchasing considerations for quick compatibility verification 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.

121-139105-XX Zoom Compatible Projector Models (2 models, with brightness/resolution)

The following are verified compatible projector models for the 121-139105-XX Zoom, each with brightness and resolution; the compatible lens model for all is 121-139105-XX Zoom:

Note: Brightness/resolution are taken from the model database (refer to the unit's nameplate/manual); 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

Christie 121-139105-XX Zoom Lens

The 121-139105-XX Zoom is an original Long Throw lens manufactured by Christie. Its optical structure, lens coatings, and body tolerances are matched to original machine standards, ensuring plug-and-play installation and stable imaging. For installations with restricted projection distances (e.g., large images from short distances, ultra-short throw against walls), choosing the correct throw ratio is more critical than selecting a generic lens.

This lens has a throw ratio of 1.70-3.00:1. 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 the genuine Christie original lens 121-139105-XX Zoom through authorized channels, complete with original packaging and traceable serial numbers, suitable for bulk procurement and project supply for professional projection, conference rooms, classrooms, and similar applications.

• Genuine Product Guarantee: Sourced through official OEM channels, with original packaging and serial numbers; channel documentation can be requested for bulk projects to eliminate refurbished units and unverified sources.
• Compatibility Verification: Provide the projector model before ordering, and Zorsika technical support will verify against the compatible model list above to ensure a proper fit.
• Project Supply: The 121-139105-XX Zoom covers 2 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 against the original, allowing selection based on your needs.

Note: Actual imaging performance is affected by projector condition and installation environment; it is recommended to test one unit before bulk ordering.

FAQ

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

A: Original lenses are manufactured by Christie, with optical parameters and body tolerances calibrated to the original machine, suitable 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 supplies both options, so 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; this article lists verified compatible models. Projectors of the same generation and brand often share mounts; if unsure, photograph 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 suits close-range small spaces), while a larger value requires a 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 is the 121-139105-XX Zoom guaranteed to be genuine?

A: Zorsika supplies genuine products through OEM channels, with original packaging and traceable serial numbers; channel documentation can be requested for bulk projects to ensure they are not refurbished or used parts.

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 removal/installation; hold the lens barrel without touching the glass, 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; 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 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 Christie original lens 121-139105-XX Zoom, project proposals, or the full compatible model list, please contact us via:

• 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 final confirmation is subject to actual quotation.