CN2290062Y

CN2290062Y - Head binocular

Info

Publication number: CN2290062Y
Application number: CN 96229725
Authority: CN
Inventors: 陈军
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-04-25
Filing date: 1996-04-25
Publication date: 1998-09-02
Anticipated expiration: 2006-04-25

Abstract

The utility model relates to a head binocular for an optical system. The head binocular is characterized in that the head binocular adopts a head structure, and an eye lens and an object lens both adopt thin resinic convex lenses. The thin resinic convex lenses can reduce weight and enlarge the diameter of the object lens relatively to expand a visual field. The magnification ratios and the focal distances of the two thin resinic convex lenses are calculated by the gauss formulas. The diameter of the eye lens is 20 mm, while the diameter of the object lens is 40 mm. The focal distance of the eye lens is 8.5 mm, while the focal distance of the object lens is 50 mm. The diameter of a tube is 58.5 mm long. The utility model is composed of an object lens regulator, two bolts 3, 11 which are respectively arranged on a left lens tube and a right lens tube, a stretchable connecting rod 5 which is used for connecting the left lens tube and the right lens tube, two nose bridge supporting sheets 6, 9, two eyepiece hoods 4, 10, a headband 14, a head ring 15, a left pressure bolt 16, an objective lens 17, an outer shell 18, an eye lens 19, a right pressure bolt 20, etc.

Description

The head-type binoculars

The utility model relates to the head-type binoculars that a kind of optical system is made.Establishing the diffraction of a final limit, can be focus, principal point, node by three variablees, adds the ratio of the refractive index of initial and last medium, establishes two conjugate pointss that have M α=+ 1 on optical axis of its characteristic.Effectively magnification is relevant with the eyesight normal person, and under normal person's condition, but true resolution is 4.5 * 10E-6rad or 1.25 ', and the minimum angular separation that optical system can be differentiated is θ _i, the visual sight person of looking into will see the resolution detail more than 300 meters clearly, then needs the magnification of 4.5 * 10E-6rad.The utility model is applicable to civilian ball match, concert and the micro-television watched, and its resolution is 1.15 ',＜300 meters distances the shortest sharpness of imaging can see 5 centimetres object image-forming sharpness and＞0.4 meter clearly the time.

The binoculars of optical system are various in style both at home and abroad at present, are usually used in military commander, civilian mapping, watch ball match, concert etc.But except that shell being adopted the improvement such as metal, plastics, rubber, use-pattern still is the structure of hand-held strip suspension in the front, long hand holding state is not supported in this kind design, thereby can not continue distant view becomes close shot and watches ball match, concert, and must hold by one hand when using, this beats a drum to do cheering squad or limit and stands users such as the football fan of not busy food, song fan and brought shortcomings such as handicapped to waving a flag while watching.

The purpose of this utility model, improve above-mentioned known shortcoming, design a kind of head-type structure, eyepiece and object lens are thin convex lens resin lens, shell is the binoculars that aluminium alloy is formed, and load is light, and the object lens diameter is increased relatively, thereby broaden one's vision, these two thin convex lens magnifications and focal length are tried to achieve by Gauss formula, and the eyepiece diameter is 20mm, the object lens diameter is 40mm, and the focal length of eyepiece is 8.5mm, the focal length of object lens is 50mm, barrel dliameter length is 58.5mm, and object lens are regulated and are set in left and right sides, and bitubular coupling shaft constitutes collapsible connecting rod, song is stretched and is regulated the interpupillary distance width between bar, conveniently being purpose to the user.

The utility model is to realize like this, head-type binoculars structure, comprise left and right sides lens barrel 1,8, the binoculars song of forming that coupling shaft constituted between two lens barrels is stretched connecting link 5, a bolt 7 is set in the center between 5 bar, the side of left and right sides eyepiece is set object lens and is regulated bolt 3,11, be used to regulate the sharpness of object lens, head circle 15,15 fixing left and right sides lens barrels 1,8 side is with clip 2,13 lockings, the fixing headband 14 in center that the center and the bitubular song of head circle 15 are stretched connecting link 5, keep lens barrel 1,8 balance, the forward position seam of head circle 15 is decided calotte 12, lens barrel 1, eyepiece hood 4 is set in 8 rear end, 10, be used to stop the intense light of ectocine visual effect, 4, bridge of the nose supporting spring 6 is set in 10 lower end, 9, be fixed on shell 18.

Accompanying drawing has provided embodiment of the present utility model, is described further below in conjunction with accompanying drawing:

Fig. 1 is the utility model user mode structural representation;

Fig. 2 is a side-looking structural representation among Fig. 1;

Fig. 3 is the lens barrel structure synoptic diagram among Fig. 1.

Symbolic representation in Fig. 1～3 is as follows:

The other end of setting clip 2,2 fixed head circles 15,15 with reference to the left side of the left lens barrel 1,1 of having described binoculars among Fig. 1 is fixed in right lens-barrel 8.Set object lens in the rear end of lens barrel 1 and regulate bolt 3.The bridge of the

nose supporting spring

6,6 that the lower end of the

eyepiece hood

4,4 that the eyepiece place sets is set is fixed in the side of lens barrel 1.The center, right side of lens barrel 1 an end coupling shaft fixedly the song other end of stretching connecting

link

5,5 be fixed in the center coupling shaft of lens barrel 8, the top that there is a

bolt

7,7 centre of the connecting link 5 fixedly other end of headband 14,14 is fixed on the center-side of head circle 15.The bridge of the nose supporting spring of setting in the left side of lens barrel 89,9 is fixed on the carriage of lens barrel 8.The eyepiece hood of setting at the

eyepiece place

4,10, the rear end of right lens-

barrel

8,8 is set object lens and is regulated the user mode that bolt 11 is formed.

With reference to Fig. 2, the link of calotte 12,12 seam fixes on headband 14 and the head circle 15, and clip 13,13 is used for elongated insertion part circle 15 two ends, and is together to form integral body.

With reference to Fig. 3, telescopical front end is by the front end internal thread that hold-down

bolt

16,16 is fixed in shell 18 that is fixed with of

object lens

17,17, and 18 rear end is provided with the rear end internal thread that hold-down

bolt

20,20 is fixed in shell 18 that is fixed with of

eyepiece

19,19.

Claims

1, a kind of head-type binoculars, it is characterized in that coupling shaft has song to stretch connecting link 5,5 between left lens barrel 1, the right lens-barrel 8,1 and 8 center fixing the center that the other end of headband 14,14 is fixed on head circle 15, and an end of 15 is fixed on left lens barrel 1, the other end is fixed on right lens-barrel 8.

2, according to the described head-type binoculars of claim 1, it is characterized in that object lens sheet 17, ocular lens 19 all adopt thin convex lens resin lens and aluminum alloy casing 18, be combined into telescope, become the sharpness of close shot by distant view, resolution is that 1.15 ',＜300 meters distances can be seen the imaging bee-line sharpness that 5 centimetres of object image-forming sharpness reach＞0.4 meter clearly.

3, according to the described head-type binoculars of claim 1, it is characterized in that the eyepiece diameter is that 20mm, object lens diameter are 40mm, the focal length of eyepiece is 8.5mm, the focal length of object lens is 50mm, barrel dliameter length is 58.5mm, and object lens are regulated bridge of the nose supporting spring 6,9 by the adjusting bolt of setting on the left and right side 3,11, eyepiece hood 4,10, calotte 12 grades are formed the head-type binoculars jointly.