At a glance
- Specifications
- EN51 Standard Zoom Compatible Model List (9 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 is the EN51 Standard Zoom guaranteed to be 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 Inquiries
Original Barco EN51 Standard Zoom lens, Long Throw, throw ratio 1.71-2.37:1, compatible with 9 Barco projectors including CTHD-61B, CTPN-41B, CTWQ-51B, CTWU-61B. Genuine supply, bulk orders available for projects.
The Barco EN51 Standard Zoom is an original (OEM) lens for Barco professional projectors. It is a Long Throw lens with a throw ratio of 1.71-2.37:1. This article compiles its 9 compatible projector models, optical specifications, and purchasing considerations for quick compatibility verification by projector model.

Specifications
| Lens Model | EN51 Standard Zoom |
| Brand (OEM) | Barco (Barco) |
| Throw Ratio | 1.71-2.37:1 |
| Product Type | Long Throw |
| Number of Compatible Models | 9 models |
| OEM Product Page | Barco Official Introduction |
The above specifications are sourced from OEM documentation and the Zorsika product database; full technical datasheets are available upon request from our sales team.
EN51 Standard Zoom Compatible Model List (9 Models with Brightness/Resolution)
Below are the verified compatible projector models for the EN51 Standard Zoom, each with brightness and resolution; the applicable lens model for all is EN51 Standard Zoom:
| Projector Model | Brightness | Resolution | Lens Model |
|---|---|---|---|
| CTHD-61B | 5500 lumens | 1920x1080 | EN51 Standard Zoom |
| CTPN-41B | 3800 lumens | 2560x1080 | EN51 Standard Zoom |
| CTWQ-51B | 5000 lumens | 2560x1600 | EN51 Standard Zoom |
| CTWU-61B | 5500 lumens | 1920x1200 | EN51 Standard Zoom |
| F50 1080 | — | — | EN51 Standard Zoom |
| F50 Panorama | — | — | EN51 Standard Zoom |
| F50 WQXGA | — | — | EN51 Standard Zoom |
| F50 WUXGA | — | — | EN51 Standard Zoom |
| Orion Cinemascope | — | — | EN51 Standard Zoom |
Note: Brightness/resolution are taken from the model database (refer to the unit's nameplate/manual for accuracy); lens compatibility is determined by the projector's lens mount and panel/chip size. For models not listed, contact Zorsika technical support for verification.
About This Original Lens
Barco EN51 Standard Zoom Lens
The EN51 Standard Zoom is an original Long Throw lens manufactured by Barco. 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., short-distance large images, ultra-short-throw wall-mounted setups), choosing the correct throw ratio is more critical than opting for a generic lens.
This lens has a throw ratio of 1.71-2.37:1. 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 Barco original lens EN51 Standard Zoom through authorized channels, complete with original packaging and traceable serial numbers, suitable for bulk procurement and project supply in professional projection, conference rooms, classrooms, and similar applications.
- Genuine Product Guarantee: Sourced through authorized OEM channels, with original packaging and serial numbers; bulk projects can request channel documentation to eliminate refurbished units or unverified sources.
- Compatibility Verification: Provide the projector model before ordering, and Zorsika technical support will cross-check against the compatible model list above to ensure a proper fit.
- Project Supply: The EN51 Standard Zoom covers 9 models; common projects can be scheduled in advance to shorten lead times.
- Alternative Solutions: For budget-sensitive needs, Zorsika also offers equivalent replacement lenses with key specifications benchmarked against OEM standards, 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 Barco, with optical parameters and body tolerances calibrated to original machine standards, 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, offering advantages in budget and lead time. Zorsika supplies both options—choose based on your project requirements.
Q: How do I confirm this lens works with my projector?
A: Verify based on 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 small spaces at close range), while a larger value requires more installation distance. Calculate the required throw ratio range from your installation distance and screen size, then match it to this model's focal range.
Q: How is the EN51 Standard Zoom guaranteed to be genuine?
A: Zorsika supplies genuine products through authorized OEM channels, with original packaging and traceable serial numbers; bulk projects can request channel documentation to ensure the lens is not refurbished or a used disassembled unit.
Q: What should I pay attention to when replacing the lens?
A: Power off the projector and wait for the cooling fan to stop before disassembly; hold the lens barrel without touching the glass, 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: Zorsika provides a 12-month warranty on all projector lenses; for normal use and non-human 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 Inquiries
For consultation on the Barco original lens EN51 Standard Zoom, project proposals, or the full compatible model list, 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.