Benq PB6100 ユーザーズマニュアル

94 

 

Keystone = (W2-W1)/ (W1+W2) x 100% 

Vertical TV dist = (H1+H2-2xH3)/2H2 x100% 

Horizontal TV dist = (W1+W2-2xW3)/2W1 x100% 

W1: image width at image bottom 

W2: image width at image top 

W3: image width at the half image height. 

H1: image height at image left 

H2: image height at image right 

H3: image height at half image 

Note:  

1.  Keystone and Vertical TV Distortion are recommended for Front Projection Display 

2.  Vertical and Horizontal TV Distortion are recommended for Rear Projection Display 

Throw ratio = projection distance / the width of the projected image 

 

Zoom ratio = maximum / minimum image diagonal size at a fixed projection distance 

The minimum/maximum focus distance is the minimum/maximum projection distance (The 

distance between the outermost element of projection lens and screen), expressed in meter, 

at which the image is still at its acceptable focus level.(acceptable focus level is specified by 

FOCUS LIMIT SAMPLE approved by customer) 

 

Color is expressed as (x, y) in 1931CIE chromaticity values 

Note: Color is measured at the center of the screen that is entirely the measured color under 

default brightness and contrast settings. 

 

ANSI Color is expressed as (u, v) in 1976 CIE chromaticity values 

Note: Color is measured at the center of the screen that is entirely the measured color under 

default brightness and contrast settings. 

 

Color Uniformity is the maximum color difference (△x,  △y) between any two points out of 

L1~L13