EIKI AH-E22010 Fixed Short-Throw Genuine Lens for 12 Models: EK-500U, EK-500UL, EK-501W and More

Eiki Original Lens AH-E22010 Fixed is an original factory optical accessory for Eiki installation projectors. It is a short-throw lens with a 0.80:1 throw ratio. The official compatibility list covers 12 models, so simply verify the projector model and panel size before installation—no need to resort to adapter rings. The value of an original lens lies not in a few extra rows of specifications, but in the fact that it is calibrated at the factory to the optical path and mount of that projector series. Its image circle, edge illumination, and focus travel all operate at their design values, eliminating the need to use keystone correction to compensate for image quality.

I. Lens Specifications

Brand	Eiki (Eiki)
Lens Model	AH-E22010 Fixed
Throw Ratio	0.80:1
Product Type	Short Throw
Compatible Models	12 models
Warranty	12 months; damage not caused by the user is eligible for after-sales service, based on the date on the shipping document

The above specifications are subject to the manufacturer's official specifications. Mechanical dimensions, flange distance, and mount type are not included in the specifications table. Please verify them with us using the exact projector model, as ordering solely on the basis of a similar model carries the risk of an incompatible fit.

II. Calculating Installation Distance from Throw Ratio

The throw ratio is the ratio of the installation distance to the image width. This original lens has a fixed focus (0.80:1), so the installation distance varies linearly with the image size and offers no adjustment range. Accurate measurements are essential before installation.

Image Size	Image Width	Required Installation Distance
100 inches	2.15 m	approx. 1.72 m
120 inches	2.58 m	approx. 2.06 m
150 inches	3.22 m	approx. 2.58 m
200 inches	4.30 m	approx. 3.44 m

These figures represent the clear distance from the front surface of the lens to the screen and do not allow for ventilation and cable connection space behind the projector. The calculations are based on a 16:10 image; actual site measurements and the manufacturer's manual take precedence.

III. Compatible Models (12 Models)

The following table is taken from the official compatibility list. Brightness and resolution have been populated from the model database. Where data is unavailable, “—” is shown rather than estimated.

Model	Brightness	Resolution
EIKI EK-500U	—	—
EIKI EK-500UL	—	—
EIKI EK-501W	—	—
EIKI EK-501WL	—	—
EIKI EK-502X	—	—
EIKI EK-502XL	—	—
EIKI EK-510U	—	—
EIKI EK-510UL	—	—
EIKI EK-511W	—	—
EIKI EK-511WL	—	—
EIKI EK-512X	—	—
EIKI EK-512XL	—	—

To verify whether a model outside the list can be used, send us photos of the projector nameplate and the existing lens. Platforms from the same generation often share mounts, but the risk of ordering based solely on a similar model is not worth taking.

Throw Ratio by Projector Model Series

The nominal throw ratio varies when the same AH-E22010 Fixed is installed on the following series, so select the value according to the actual projector series.

Model Series	Throw Ratio
—	0.80:1

IV. Three Checks Before Replacement

• Confirm the projector's imaging chip and resolution. The original lens is designed for a specific panel size. If the panel specifications differ, its image circle cannot cover the full image, resulting in vignetting or light loss at the edges.
• Calculate the installation distance first. This lens has a nominal throw ratio of 0.80:1. Use the table in Section 2 to calculate the distance for your installation site. A fixed-focus lens offers no adjustment margin, and even a zoom lens requires 10–20 cm of clearance at both ends.
• Verify the mount and locking mechanism. The original lens is calibrated to the mount of that projector series. After installation, it must audibly click into the locked position. A skewed image or soft edges are usually caused by incomplete locking rather than a problem with the lens itself.

If you are unsure, take one photo each of the projector nameplate and the existing lens nameplate and send them to us. Verification against the physical products is the safest approach.