ATN 7x30 Technisches Datenblatt

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)

1. General Overview

1.1 Main Character

This model of 7x30 binoculars is made to

military specifications including a range finding

reticule. The optics are made to exacting military

specifications in order to give the viewer excel-

lent brightness, exacting image clarity and unpar-

allel true color of the image whether it is a f low-

er, bird where color is important or a military

target. The user can have confidence whether it

is being used in a military, public security, traffic

control, boating, aviation, or any other applica-

tion 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

Magnification: 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)

Diopter adjusting range: -5~ +7 diopter

Interpupillary 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

Basic binocular optical construction, as shown

in Figure 1, consist of (l)the objective lens, (2)

the erecting prisms, (3) the reticle and (4) the eye-

piece. The reticle (3) is build in the right system.

3.1.2 How a Binocular works

The light from the object or target you are

looking at enters the binocular through the Objec-

tive lens system (item 1, fig. 1). Due to the objec-

tive 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 erec-

tive prisms) ( item 2, fig. 1) it becomes right side

up ( erect) and changed from right to left to left

to right so written 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 through the lens assembly (item 4,

fig. 1) so that the observer 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 vertical

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.)

3.2 Body assembly ( Fig. 2)

Figure 2, illustrates the basic design and

structure of a porro prism binocular like

the 7x30. The binocular consists of identi-

cal two halves. A right side and a left side.

Item 1 is the lens assembly including the spe-

cial 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

interpupillary disc indicating the settings that

correspond to the distance between the observ-

er’s eyes. This distance ranges from 56 mm to

72 mm. Item 5 which is on the connecting shaft

holding both halves of the binocular is where the

objective lens caps are secure.

4. How to use the binocular.

4.1 How to focus the binocular.

4.1.1 Interpupillary adjustment.

You must first adjust the binocular so that each

eye piece is adjusted to the distance between your

eyes. This is done by putting the binocular in both

hands and adjusting the bino until you basically

see one round image. Note: the image will not be

clear. You will adjust for clarity in the next step.

You must first fit the binocular to your eye width

distance.

4.1.2 Adjusting for the use of regular glasses or

sunglasses

This is a long eye relief binocular. It means that

like other binoculars that do not have a long eye

relief you can adjust the f lexible rubber eyepiece.

A long eye relief allows the eyeglass wearer to see

a full image instead of a restricted one. If you are

not wearing glasses leave the f lexible eyepiece in

the extended upright position. If you are wearing

glasses then fold down the rubber eyepiece.

4.1.3 Adjusting for image quality and clarity.

Unlike some binoculars that have a center

focus to make adjustments this binocular has

individual focusing adjustments. In order for you

to adjust the optics to your individual eyes, you

will need to adjust each eyepiece or ocular. After

placing the binocular at your eyes, you will need

to close your left eye. With your right eye open,

you will need to take the f ingers in your right

hand and adjust the ocular until you see a per-

fectly clear image of the target you are looking

at. Lower the binocular and remember the diopter

setting for the right eye . Now closing your right

eye, repeat the process you used for the right eye

and turn the left diopter until you have a per-

fectly clear image. Again, take note of the diopter

setting for the left eye. If, for some reason, the

diopter settings are moved, such as letting some

other person use the binocular, you will be able to

quickly use (with out adjustments) the binocular

again by setting the right and left oculars to their

correct diopter settings for your eyes.

4.2 How to use the reticle measure azimuth

4.2.1 What is azimuth

The following is the basic def inition of Azi-

muth. Azimuth of a body is the arc of the hori-

zon intercepted between the north or south point

and the foot of the vertical circle passing through

the body. It is reckoned in degrees from either the

north or south point clockwise entirely around

the horizon. Azimuth of a current is the direction

toward which it is f lowing, and is usually reck-

oned from the north point.

A mil’s reticule can measure the azimuth

angle, upper and lower angle, distance and size of

an object or target . The visual distance reticule

lines can measure the distance of normal object

easily on the basis that the object to be measured

is at least 2 meters (6 feet) in height.

4.2.2 How to measure the azimuth angle

The azimuth angle is the angle included

between two objects to be measured at the hori-

zontal direction of the binocular. (Or two ends of

one object at horizontal direction)

4.2.2. A When the azimuth of two targets is

smaller than the azimuth measuring range

(-50~ +50 mils) inside the binoculars, aim the

scale line at one end of the reticule at the target

then read the value of the scale at which another

target was located on the reticule. The value is

the measured azimuth mil. As shown in fig. 4, the

azimuth of the target (tank) is 0-20 mils. The azi-

muth between the targets (p-p) is 0-65 mils.

4.2.2.B When the azimuth of two targets

is bigger than azimuth measuring range

(-50~+50 mils) inside the binoculars, on the target

can be selected to make the necessary measure-

ments in a step by step fashion. The sum of the

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