At a glance
- Specifications
- 121-130105-XX Medium Zoom Compatible Projector Models (15 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 do I confirm this lens works with my projector?
- Q: How do I choose the throw ratio?
- Q: How can I ensure the 121-130105-XX Medium 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
Original Christie lens 121-130105-XX Medium Zoom, long throw, throw ratio 1.70-2.90:1, compatible with 15 Christie projectors including LHD720i-D BLACK, LHD720i-D WHITE, LW651i-D Black, LW651i-D White. Genuine supply, bulk orders available for projects.
The Christie 121-130105-XX Medium Zoom is an original (OEM) lens for Christie professional projectors. It is a Long Throw lens with a throw ratio of 1.70-2.90:1. This article compiles its 15 compatible projector models, optical specifications, and purchasing considerations for quick compatibility verification by projector model.

Specifications
| Lens Model | 121-130105-XX Medium Zoom |
| Brand (OEM) | Christie (Christie) |
| Throw Ratio | 1.70-2.90:1 |
| Product Type | Long Throw |
| Number of Compatible Models | 15 models |
| OEM Product Page | Christie 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.
121-130105-XX Medium Zoom Compatible Projector Models (15 models, with brightness/resolution)
The following are verified compatible models for the 121-130105-XX Medium Zoom, each with brightness and resolution; the applicable lens model for all is 121-130105-XX Medium Zoom:
| Projector Model | Brightness | Resolution | Lens Model |
|---|---|---|---|
| LHD720i-D BLACK | — | — | 121-130105-XX Medium Zoom |
| LHD720i-D WHITE | — | — | 121-130105-XX Medium Zoom |
| LW651i-D Black | — | — | 121-130105-XX Medium Zoom |
| LW651i-D White | — | — | 121-130105-XX Medium Zoom |
| LW751i-D Black | — | — | 121-130105-XX Medium Zoom |
| LW751i-D White | — | — | 121-130105-XX Medium Zoom |
| LWU601i-D Black | — | — | 121-130105-XX Medium Zoom |
| LWU601i-D White | — | — | 121-130105-XX Medium Zoom |
| LWU620i-D | 7000 lumens | 1920x1200 | 121-130105-XX Medium Zoom |
| LWU701i-D Black | — | — | 121-130105-XX Medium Zoom |
| LWU701i-D White | — | — | 121-130105-XX Medium Zoom |
| LWU720i-D Black | — | — | 121-130105-XX Medium Zoom |
| LWU720i-D White | — | — | 121-130105-XX Medium Zoom |
| LX801i-D Black | — | — | 121-130105-XX Medium Zoom |
| LX801i-D White | — | — | 121-130105-XX Medium Zoom |
Note: Brightness/resolution are taken from the model database (refer to the nameplate/user manual on the unit); lens compatibility is determined by the lens mount and panel/chip size on the projector. For models not listed, please contact Zorsika technical support for confirmation.
About This Original Lens
Christie 121-130105-XX Medium Zoom Lens
The 121-130105-XX Medium Zoom is a Long Throw lens manufactured by Christie as original equipment. 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 limited projection distance (e.g., short-distance large images, ultra-short throw against a wall), choosing the correct throw ratio is more critical than selecting a generic lens.
This lens has a throw ratio of 1.70-2.90:1. Throw ratio = projection distance ÷ image width: a smaller value produces a larger image (ideal for short distances and small spaces), while a larger value requires a longer 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 Christie original lenses 121-130105-XX Medium 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 other applications.
- Genuine Product Guarantee: Sourced through official authorized channels, with original packaging and serial numbers; channel documentation can be provided for bulk projects to eliminate refurbished or unverified units.
- Compatibility Verification: Provide the projector model before ordering, and Zorsika technical staff will confirm against the compatible model list above to avoid installation issues.
- Project Supply: The 121-130105-XX Medium Zoom covers 15 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 as needed.
Note: Actual imaging performance is affected by projector condition and installation environment; it is recommended to test one unit before large-volume orders.
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 original specifications, 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, offering advantages in budget and lead time. Zorsika can supply both options—choose based on your project requirements.
Q: How do I confirm this lens works with my projector?
A: Compatibility is determined by the lens mount and panel/chip size on the projector; verified compatible models are listed in this article. Professional projectors of the same generation and brand often share the same mount. If unsure, take a photo of the 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 distances and small spaces), while a larger value requires a longer 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 121-130105-XX Medium Zoom is genuine?
A: Zorsika supplies genuine products through authorized channels, with original packaging and traceable serial numbers; channel documentation can be provided for bulk projects to ensure they are not refurbished or second-hand units.
Q: What should I pay attention to when replacing the lens?
A: Before removal, always power off the projector and wait for the cooling fan to stop; hold the lens barrel without touching the glass, and use an air 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 damage, 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 121-130105-XX Medium Zoom, project solutions, or the complete 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 model data in this article are sourced from OEM documentation and the Zorsika product database, which is continuously updated; final confirmation is subject to actual inquiry.