NEC VT695/700 specifications Ceiling Mounted and Desktop, Contents, Product Description, Formulas

VT695/700 Installation Guide			NEC Display Solutions of America, Inc.
Ceiling Mounted and Desktop				Rev 1.0
Contents
Product Description, Lens Specs, Notes and Formulas		Pg 1
Diagrams & Distance Charts		Pg 2
Cabinet Dimensions		Pg 3-4
Ceiling Mount Dimensions		Pg 5
Input Panel and Control Codes		Pg 6
Product Description
Type:	3 panel LCD projector,	Brightness:	VT695:	2500 ANSI Lumens
	0.63” p-Si TFT w/MLA		VT700:	3000 ANSI Lumens
Resolution:	1024 x 768
Dimensions:	12.1” (W) x 10.2” (H) x 4.4” (D)
Weight:	6.4 lbs
Lens Specifications
Throw Ratio:	1.5 – 1.8:1 (for 100” diagonal)	Focal Length:	18.9mm – 22.7mm
Offset Angle:	8.7° - 10.4° (for 100” diagonal)	F/#:	1.7 - 2.07
Screen Sizes:	25” - 300” diagonal (4:3)	Manual Focus/Manual Zoom

Notes

ƒFor screen sizes not indicated on the projection tables, use the formulas below.

If the figures on the tables do not match the results of formulas, use the figures in the table.

•All calculations are based on a 4:3 aspect ratio.

•Distances are in inches, for millimeters multiply by 25.4.

•Distances may vary ±5%.

Formulas

The Projection Formulas use the image width for calculation. For proper projection placement, determine the image width for the desired screen size. Use the Screen Formulas below to calculate all screen dimensions. Plug in the width for “W” in the Projection Formulas.

Refer to the diagrams and charts for popular screen sizes on page 2:

Definitions:	4:3 Screen Formulas:
W = Image Width	W = H x 4/3
H = Image Height (size)	H = W x 3/4
B = Vertical distance between lens center and screen center	Screen Diagonal = W x 5/4
C = Throw distance
D = Vertical distance between lens center and screen top
(screen bottom for desktop application)

Projection Formulas:

B = 0.266W

C (wide) = 1.475W – 1.176

C (tele) = 1.773W – 1.173

D = 0.108W

α(wide) = tan¯¹ (B/C(wide))

α(tele) = tan¯¹ (B/C(tele))

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