Sale Services
After-sales service
Service Commitment
Projection Knowledge


Sale Services >> Projection Knowledge >>
Projection distance and projection
Sale Services Introduction:

Projector projection distance is the distance between the lens and the screen , usually with rice as a unit. In the practical application of them , in a small space to get the big picture , the need to use with a wide-angle lens of the projector, so that you can in a very short projection distance for a larger projection screen size ; environment in theater and auditorium projection distance is far from the case , in order to get the right size of the screen , you need to select with a far -focus lens of the projector, so that you can in the far distance you can get the right projection screen size , and will not screen out screen is too large size. Common standard projector lens , suitable for most users.

How to estimate the projection distance?

Projection distance is a good count. If -inch diagonal screen measurement , then the number of 1 / 10 is just a few feet away from the projection measurement . That is , 100 -inch diagonal screen (screen 800 × 600) of the projection distance of 10 feet, slightly more than 3 meters .

How to figure out throws N" When needs to be shortest and the most long distance figures out with the fluid chip size and the lens focal distance throws N" When needs to be shortest and the most long distance refers to the formula:

Shortest m= smallest focal distance mm/25.4* silver screen size in/fluid chip size in*2.54/N longest m= greatest focal distance mm/25.4* silver screen size in/fluid chip size in*2.54/N is smallest = the screen size/fluid chip size * smallest focal distance. Note: Other size computational method is similar. (mm/25.4) transforms into inch in

Projection way suspended ceiling function: Hangs the projecting camera inversion on the roof carries on the projection, requests the image which the projecting camera projects to be able to realize the high and low turn over function. The back throws the function: Places the back the projecting camera to pass curtain's behind to carry on the projection, the function which about requests the projecting camera to project the image which can realize turns over.

Copyright © 2007-2011 Shanghai Jiusen Industrial Co.,Ltd. Tel:+86-21-62965638
Mobile:+86-13524362518 Mr.Lu Website:www.jiusenscreen.com E-mail/Msn:lsen6@hotmail.com
Add:Address:Liyue Road and Limin Road Intersection, Pudong New Aera Shanghai,China Website support :Chisiho.com