CN201681204U

CN201681204U - Optical system for high-magnification telescope

Info

Publication number: CN201681204U
Application number: CN2010201884257U
Authority: CN
Inventors: 胡朝华; 王平宇
Original assignee: YUNNAN YUN'AO OPTOELECTRONICS CO Ltd
Current assignee: YUNNAN YUN'AO OPTOELECTRONICS CO Ltd
Priority date: 2010-05-13
Filing date: 2010-05-13
Publication date: 2010-12-22
Anticipated expiration: 2020-05-13

Abstract

The utility model discloses an optical system for a high-magnification telescope, which is mainly used for a high-magnification telescope with the magnification more than 20 times, and has the technical scheme that a set of object lenses, a first reflecting mirror, two second reflecting mirrors, two sets of prisms mutually perpendicular and two sets of eye lenses are adopted to form the optical system with a single-object lens and double eye lens. Through the proof of the practical application, the defects of big volume, high weight and expensive manufacturing cost of the telescope are solved on the premise that the optical property is ensured, so that the utility model fundamentally achieves the technical advancement on the high-magnification telescope.

Description

A kind of telescopical optical system of big multiplying power that is used for

One, technical field

The utility model belongs to a kind of telescopical optical system, is mainly used in enlargement ratio at the big multiplying power telescope more than 20 times, also can be used for other similar telescope.

Two, background technology

The telescope that common people know all is two relatively independent optical beam paths, reaches the requirement of binocular vision through the connection of structural member.And for the higher telescope of multiplying power, more common has reflective and transmission-type two big classes, and big multiplying power telescope early adopts single Zhi Guanglu to form.As shown in Figure 1, be a kind of optical beam path of catadioptric telescope, constitute by object lens 1,2 and catoptron 3, prism 4, focal plane 5, eyepiece group 6.Light beam is refracted on the surface of catoptron 3 by object lens 1,2, at first reflexes to the reflector space of catadioptric object lens 2 through the face of catoptron 3, pass through the reflection of catadioptric object lens 2 again after, converge to front focal plane 5 places of eyepiece, amplify for eye-observation by eyepiece.In this system, light energy losses is big, and catoptron 3 middle parts need punching, also will plate reflectance coating, and processing technology complexity, difficulty are bigger, the cost of parts height.Since can only monocular observation, inconvenience during use.

The two thing binocular telescopes of traditional transmission-type as shown in Figure 2, are made up of object lens 7, prism 4, focal plane 5 and eyepiece group 6.Light beam by prism 4 image rotations, is imaged on focal plane 5 places after object lens 7 converge, supply eye-observation after eyepiece group 6 is amplified.Two relatively independent telescopic systems constitute binocular telescope.In order to satisfy the visual field demand of powerful luminous flux and observation, the size of object lens and prism is all bigger, this just causes problems such as the also increase of telescopical volume, Heavy Weight, cost height, about 300 millimeters of concrete general big multiplying power telescope shank port, the about 12Kg of shank weight, incompatibility development of times far away.

Three, utility model content

The utility model will solve technical problem underlying: according to the deficiency of the big multiplying power telescope existence that has single Zhi Guanglu and two thing binoculars now, design a kind of new optical system, the telescopical optical system of big multiplying power that replaces single Zhi Guanglu and two thing binoculars, guaranteeing under the constant prerequisite of optical property, overcome that the telescope volume is big, Heavy Weight and defect of high cost, fundamentally realize the technical progress of big multiplying power telescope product.

Main technical schemes of the present utility model is: adopt by one group of object lens, first catoptron, two second catoptrons, two groups of orthogonal prisms and two groups of eyepieces, form a binocular optical system of single object lens.

The utility model proves by practical application: adopting one group of object lens, after reflecting dexterously through two groups of catoptrons, is two bundles with a branch of photolysis, realizes binocular vision; Simplified traditional big multiplying power telescope objective structure, reduced the telescopical volume and weight of big multiplying power effectively, big multiplying power telescope shank port is reduced to about 140 millimeters under the equal conditions, and shank weight is reduced to about 3.5Kg.Under the prerequisite that guarantees optical property, the good processability of optical element, low cost of manufacture.

Four, description of drawings

Below in conjunction with accompanying drawing, concrete enforcement of the present utility model is done to describe in further detail.

Fig. 1 is the big multiplying power telescopic optical system figure of existing single Zhi Guanglu.

Fig. 2 is the binocular big multiplying power telescopic optical system figure of existing doublet.

Fig. 3 is the optical system diagram of the utility model (single object lens binocular).

Fig. 4 is the front view of prism 11.

Fig. 5 is the left view of prism 11.

Fig. 6 is the vertical view of prism 11.

Five, embodiment

With reference to Fig. 3, to main technical schemes of the present utility model explanation: adopt by one group of object lens 8, first catoptron 9, two pieces second catoptrons 10, two groups of orthogonal prisms 11 and two groups of eyepieces 6, form a binocular optical system of single object lens.

The angle of described first catoptron 9 is to decide according to the angle of telescope enlargement ratio, the reflection of incident ray needs.

Described prism 11 is seen Fig. 4,5,6.

With reference to Fig. 3, principle of work of the present utility model: the light beam of infinite distance is by behind the object lens 8, project first catoptron 9, catoptron 9 is divided into two-way to light beam, project then on second catoptron 10, second catoptron with beam reflection to two an orthogonal prism 11 after, be imaged onto on the eyepiece front focal plane 5, amplify for eye-observations through eyepiece group 6 again.

The utility model has been used for the big multiplying power telescope of a plurality of kinds, as shows listed several typical products:

The product code name

Enlargement ratio

The visual field

Bore mm

Resolution

Volume cm ³

Shank weight Kg

DMSW60

23 ^×

2°

60

4.6″

φ140×380

3.5

DMSW80

35 ^×

1.3 °

80

3″

φ160×460

4.2

DMSW100

46 ^×

1°

100

2.4″

φ220×500

5

Used big multiplying power telescope has all guaranteed original optical property, and the index that has obviously is better than original product.

Claims

1. one kind is used for the telescopical optical system of big multiplying power, contain eyepiece (6), it is characterized in that: adopt by one group of object lens (8), first catoptron (9), two second catoptrons (10), two groups of orthogonal prisms (11) and two groups of eyepieces (6), form a binocular optical system of single object lens.