Panasonic ET-D75LE20

The ET-D75LE20 1.70-2.40:1 lens is a standard lens with a ratio of 1.7-2.4:1.
The lens is suitable for 3-Chip DLP projectors from Panasonic.
If you have questions about the compatibility of the ET-D75LE20 1.70-2.40:1 with your projector model, please contact our Sales team by email or by phone.

How do I find the right value?

Distance = Image width x Ratio
Image width = Distance / Ratio
Ratio = Distance / Image width

Glossary

f-number
f stands for „focal length“ (Brennweite). Ratio of focal length to aperture. Zoom lenses often have two values. The large diaphragms are described with small numbers and the small diaphragms with large numbers. A lens with a lower f-number lets more light through.

Throw ratio
Also called projection ratio, ratio, throw. It is the ratio of the projection distance to the image width. The product of the ratio with the screen width is the distance between projector and screen. Therefore the width of the screen can be calculated if you divide the distance to the screen by the ratio. If two numbers are given (e.g.: 1.5-2.5:1), this means that the projector has a zoom lens and the ratio can be altered within the specified range.

Screen size (diagonal)
Distance between two diagonally opposite corners.

Aspect ratio
Aspect ratio that depicts the relationship of the width to the height

Image resolution
Number of image points (pixels) of the width and height of an image: e.g. 1920×1080

With aspect ratio 4:3
VGA (Video Graphics Array) 640×480 pixels
SVGA (Super Video Graphics Array) 800×600 pixels
XGA (Extended Graphics Array) 1024×768 pixels
SXGA+ (Super Extended Graphics Array Plus) 1400×1050 pixels
UXGA (Ultra Extended Graphics Array) 1600×1200 pixels

With aspect ratio 5:4
SXGA (Super Extended Graphics Array)

With aspect ratio 16:9
HD 720 (HD) 1280×720 pixels
WSXGA (Wide Super Extended Graphics Adapter) 1600×900 pixels
FULL HD (2K, HD1080, 1080p) 1920×1080 pixels
QWXGA (Quadruple Wide Extended Graphics Adapter) 2048×1152 pixels
2k 2048x1080 pixels
4K-UHD 3840×2160 pixels

With aspect ratio 16:10
WXGA (Wide Extended Graphics Array) 1280×800 pixels
WXGA+ (Wide Extended Graphics Array Plus) 1440×900 pixels
WSXGA (Wide Super Extended Graphics Adapter) 1680×1050 pixels
WUXGA (Wide Ultra Extended Graphics Array) 1920×1200 pixels