Direct Sun Blocking Percentage Comparison

Blind/Louver vs. Lighttex

The increased percentage of direct sun blocking equates to improved uniformity of diffused interior reflected light. For details of our researched data, see computer modeling results.

Three easy steps:
Step 1: Select a window orientation A or B,
A. Horizontal Skylight Window
B. Vertical Side Window
Dimension of window: 10' x 10'
Dimension of window: 10' x 10'
Window is parallel to direct north East South West North
Window is 45º to direct north North/East North/West South/East South/West
Step 2: Select site location
Site Location
Degree
Minute
Second
Daylight Savings
City:
Positive time zone for Western Hemisphere.
Note: If your city is not listed in the City pulldown box, click here to find the latitude, longitude and time zone, then select Enter Lat/Long=> from the pulldown box and enter the values in the text boxes to the right. Need help? Click here. Or contact us, we will add your city into the pulldown box.

Step 3: 
Note: Set your page orientation to Landscape by selecting File => Page Setup to print results.
Direct Sun Blocking Percentage Comparison
March 21st

Blind/Louver

Blind/Louver

Lighttex

Blind/Louver

Blind/Louver

Lighttex

Blind/Louver

Blind/Louver

Lighttex

35º Cell

40º Cell

45º Cell

strip/cell dim.

2"x3"x10'

2"x3"x10'

2"x2"x3"

2.5"x3"x10'

2.5"x3"x10'

2.5"x2.5"x3"

3"x3"x10'

3"x3"x10'

3"x3"x3"

07:00am
08:00am
09:00am

10:00am

11:00am

12:00pm

01:00pm

02:00pm

03:00pm

04:00pm
05:00pm
06:00pm
07:00pm
June 21st Blind/Louver Blind/Louver Lighttex Blind/Louver Blind/Louver Lighttex Blind/Louver Blind/Louver Lighttex
35º Cell 40º Cell 45º Cell

strip/cell dim.

2"x3"x10'
2"x3"x10'
2"x2"x3"
2.5"x3"x10'
2.5"x3"x10'
2.5"x2.5"x3"
3"x3"x10'
3"x3"x10'
3"x3"x3"
07:00am
08:00am
09:00am

10:00am

11:00am

12:00pm

01:00pm

02:00pm

03:00pm

04:00pm
05:00pm
06:00pm
07:00pm
Sept 21st Blind/Louver Blind/Louver Lighttex Blind/Louver Blind/Louver Lighttex Blind/Louver Blind/Louver Lighttex
35º Cell 40º Cell 45º Cell

strip/cell dim.

2"x3"x10'
2"x3"x10'
2"x2"x3"
2.5"x3"x10'
2.5"x3"x10'
2.5"x2.5"x3"
3"x3"x10'
3"x3"x10'
3"x3"x3"
07:00am
08:00am
09:00am

10:00am

11:00am

12:00pm

01:00pm

02:00pm

03:00pm

04:00pm
05:00pm
06:00pm
07:00pm
Dec 21st Blind/Louver Blind/Louver Lighttex Blind/Louver Blind/Louver Lighttex Blind/Louver Blind/Louver Lighttex
35º Cell 40º Cell 45º Cell

strip/cell dim.

2"x3"x10'
2"x3"x10'
2"x2"x3"
2.5"x3"x10'
2.5"x3"x10'
2.5"x2.5"x3"
3"x3"x10'
3"x3"x10'
3"x3"x3"
07:00am
08:00am
09:00am

10:00am

11:00am

12:00pm

01:00pm

02:00pm

03:00pm

04:00pm
05:00pm
06:00pm
07:00pm

Solar position script was based on Solar Position Calculator, by Surface Radiation Research Branch, National Oceanic & Atmospheric Administration, US Department of Commerce.

© 2005 Lighttex Canada, Inc.