At a glance
- Specifications
- AH-AC21020 Zoom Compatible Projector Models (4 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 AH-AC21020 Zoom is genuine?
- Q: What should I pay attention to when replacing the lens?
- Q: How long is the lens warranty?
- Related Inquiry Links
- Purchasing Consultation
Eiki original lens AH-AC21020 Zoom, long throw, throw ratio 1.61-2.42:1, compatible with EIKI EK-831DU, EIKI EK-831U, EIKI EK-833DU, EIKI EK-836DU. Genuine supply, bulk orders available for projects.
The Eiki AH-AC21020 Zoom is an original (OEM) lens for Eiki professional projectors. It is a long throw lens with a throw ratio of 1.61-2.42:1. This article compiles its 4 compatible projector models, optical specifications, and purchasing considerations, making it easy to quickly verify compatibility by projector model.
Specifications
| Lens Model | AH-AC21020 Zoom |
| Brand (OEM) | Eiki (Eiki) |
| Throw Ratio | 1.61-2.42:1 |
| Product Type | Long Throw |
| Number of Compatible Models | 4 models |
| OEM Product Page | Eiki official introduction |
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.
AH-AC21020 Zoom Compatible Projector Models (4 models, with brightness/resolution)
The following are verified compatible projector models for the AH-AC21020 Zoom, each with brightness and resolution; the compatible lens model for all is AH-AC21020 Zoom:
| Projector Model | Brightness | Resolution | Lens Model |
|---|---|---|---|
| EIKI EK-831DU | — | — | AH-AC21020 Zoom |
| EIKI EK-831U | — | — | AH-AC21020 Zoom |
| EIKI EK-833DU | — | — | AH-AC21020 Zoom |
| EIKI EK-836DU | — | — | AH-AC21020 Zoom |
Note: Brightness/resolution are taken from the model database (refer to the unit's nameplate/user manual for accuracy); 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
EIKI AH-AC21020 Zoom Lens
The AH-AC21020 Zoom is a long throw lens manufactured by Eiki. Its optical structure, lens coatings, and body tolerances are all matched to original machine standards, ensuring plug-and-play installation and stable imaging. For installation environments with limited projection distance (e.g., short-distance large-screen projection or wall-mounted ultra-short throw), choosing the right throw ratio is more critical than selecting a generic lens.
This lens has a throw ratio of 1.61-2.42:1. Throw ratio = projection distance ÷ image width: the smaller the value, the larger the image (ideal for short distances in small spaces); the larger the value, the greater the installation distance required. 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 Eiki original lens AH-AC21020 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; for bulk projects, channel documentation can be requested to eliminate refurbished units or unverified sources.
- 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 AH-AC21020 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 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; for large orders, it is recommended to test 1 unit first.
FAQ
Q: How do I choose between an original lens and a replacement lens?
A: Original lenses are manufactured by Eiki, 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 machine, 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: Refer to 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 nameplate and send it to Zorsika technical support for confirmation—this is the safest approach.
Q: How do I choose the throw ratio?
A: Throw ratio = projection distance ÷ image width. The smaller the value, the larger the image (short throw/ultra-short throw suits short distances in small spaces); the larger the value, the greater the installation distance required. Work backward from your installation distance and screen size to determine the required throw ratio range, then match it to this model's focal length range.
Q: How can I ensure the AH-AC21020 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 product is not refurbished or a used pulled part.
Q: What should I pay attention to when replacing the lens?
A: Before disassembly, be sure to power off the projector and wait for the cooling fan to stop; hold the lens barrel without touching the glass, and use a blower for dust; after installation, focus-test before tightening the locking screws, and clean the mount and contacts as you go.
Q: How long is the lens warranty?
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 Eiki original lens AH-AC21020 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, which is continuously updated; final confirmation is subject to actual quotation.