ATN 7x30 Instructions For Use And Maintenance Manual

7x30

Instructions for use and maintenance

Catalogue Index

1. General Overview ................................................................... (2)

2. Technical Specification ......................................................... (2)

3. Construction Specifications ................................................. (3)

4. How to use a Binocular with a military style reticle ....... (6)

5. Binocular and accessories ................................................... (15)

6. How to care for your binocular .......................................... (15)

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1. General Overview

1.1 Main Character

This model of 7x30 binoculars is made to
militar y specifications including a range finding
reticule. The optics are made to exacting militar y
specifications in order to give the viewer excel­lent brightness, exacting image clarity and unpar­allel tr ue color of the image whether it is a f low­er, bird where color is impor tant or a military
target. The user can have confidence whether it
is being used in a military, public security, traff ic
control, boating, aviation, or any other applica­tion requiring confidence of equipment.

1.2 Model 7x30

1. 3 Optimal environment:

-43°C to +55°C: (-40F to +131F)

2. Technical Specification

2.1 Optical performance

Magnif ication: 7x

Field of view: 7.5° (394 ft. @ 1000 yards/360m
@ 1000 Meters)

Exit pupil diameter: 7.1 mm

Exit pupil distance: 21.8 mm (Long eye relief
for eyeglass wears)

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Diopter adjusting range: -5~ +7 diopter

Inter pupillary distance: 56-72 mm

Resolution: max 5.5”

2.2 Size and mass

Size (length x width x height) :

174mm X 48mm X 110mm

Weight

Binoculars:max 0.5kg (1.25 lbs)

Complete product: max 1.0kg (2.5 lbs)

3. Construction Specifications

3.1 Optical system

3.1.1 Basic binocular construction

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Basic binocular optical construction, as shown
in Fig ure 1, consist of (l) the objective lens, (2)
the erecting prisms, (3) the reticle and (4) the eye­piece. The reticle (3) is build in the right system.

3.1.2 How a Binocular works

The light f rom the object or target you are
looking at enters the binocular through the Objec­tive lens system (item 1, f ig. 1). Due to the objec­tive lens, the image at this point is upside down.
However, as the light rays of the image passes
through the prism system, ( known as the erec­tive prisms) ( item 2, f ig. 1) it becomes right side
up ( erect) and changed f rom r ight to left to lef t
to right so wr itten words appear correct. (Until
this happen the word “word” looks like drow). At
this point the image rays are now passed through
the reticle lens (item 3, fig. 1). The image rays are
now passed th rough the lens assembly (item 4,
fig. 1) so that the obser ver can now see the distant
object.

3.1.3 Reticule (See Fig. 3)

There are vertical and horizontal lines on the
reticule 3. Each small division on both ver tical
and horizontal lines represents 5 mils and each
big division represents 10 mils (one circularity
angle = 6400 mils. (One circular angle equals 1
degree of angle, equals 1 minute of angle, equals
60 seconds of angle, equals 6400 mils.)

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3.2 Body assembly ( Fig. 2)

Figu re 2, illust rates the basic design and
st ructure of a porro prism binocular like
the 7x30. The binocular consists of identi­cal two halves. A right side and a lef t side.
Item 1 is the lens assembly including the spe­cial reticle housing. The range adjustment for the
diopter settings is from -5 to+7. Each mark of the
diopter dial on the eyepiece ref lects one diopter
adjustment. Item 2 is the main binocular body
housing the porro prism assembly. Item 3 is the
objective lens assembly where the light from the
image enters the binocular. Item 4 contains the
inter pupillar y disc indicating the set tings that
cor respond to the distance between the obser v­er’s eyes. This distance ranges from 56 mm to
72 mm. Item 5 which is on the connecting shaft

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