CN208421443U - A kind of reading glasses using square piece - Google Patents

Abstract

The utility model provides a kind of reading glasses using square piece, including mirror holder and eyeglass, the mirror holder further includes having the bridge of the nose, glass frame pin head and nose support, the eyeglass be in a pre-installation be 70mm as diameter circular eyeglass symmetrical machining made of square piece eyeglass, it includes symmetrical two arc-shaped edges and two straight lines, the distance between its two arc-shaped edges are 70mm, the distance between two straight lines are 42mm, by the lens optical center point on the square piece eyeglass compared to eyeglass geometric center point when installation, cut-parts are fixedly mounted after deviating 4.5-6.5mm to glasses symmetrical centre.A kind of reading glasses using square piece provided by the utility model have used the square piece eyeglass of specific dimensions, the optic center point of eyeglass can be subjected to a certain range of displacement, the horizontal distance of its two optic center point is set to be equal to the close with interpupillary distance of human eye, it allows user that can clearly regard object, does not generate visual fatigue and deformation.

Description

A kind of reading glasses using square piece

Technical field

The utility model relates to eyewear arts, refer in particular to a kind of reading glasses using square piece.

Background technique

When human eye regards object, set when close since human eye regards is acted on, and the optical axis inwardly rotates, so that closely with interpupillary distance (to read For distance 33cm) it is 4~6mm smaller with (head-up) interpupillary distance than remote, therefore, compared in the optic center point and geometry of spectacles The heart coincides, and presbyopic glasses need to shift the optic center point of eyeglass so that OCD (two lens optical center point levels away from From) and it is close equal with interpupillary distance, allow user that can clearly regard object, without generating visual fatigue and deformation.

When the optical centre of eyeglass is inwardly displaced, just increase with the maximum distance of lens edge, it is therefore desirable to simultaneously Sizeable eyeglass is designed, to meet actual demand.

Summary of the invention

The technical problems to be solved in the utility model is to provide a kind of reading glasses using square piece, optical centre The opposite geometric center point of point interior can move a certain range, and the horizontal distance of its two optic center point is made closely to use interpupillary distance equal to human eye.

The utility model is realized in this way: a kind of reading glasses using square piece, including mirror holder and eyeglass, the mirror holder It further include having the bridge of the nose, glass frame pin head and nose support, the eyeglass is the circular eyeglass symmetrical machining for being 70mm by diameter in a pre-installation Made of square piece eyeglass comprising symmetrical two arc-shaped edges and two straight lines, the distance between two arc-shaped edges are 70mm, and two is straight The distance between line side is 42mm, by the lens optical center point on the square piece eyeglass compared to eyeglass geometric center when installation Point, cut-parts are fixedly mounted after deviating 4.5-6.5mm to glasses symmetrical centre.

Further, the overall width of the mirror holder is 138-142mm.

Further, the bridge of the nose length is 18mm.

Further, the mirror widths are 30mm.

Further, the eyeglass length is 53mm.

Further, the front lens surface camber is designed as 500C.

Preferably, the lens materials are PC.

Utility model has the advantages that the utility model has clear advantage and compared with prior art beneficial to effect Fruit can carry out the optic center point of square piece eyeglass a certain range of specifically, having used the square piece eyeglass of specific dimensions Displacement makes the horizontal distance of its two optic center point be equal to the close of human eye and uses interpupillary distance, allows user that can clearly regard object, do not generate view Fatigue and deformation.

Detailed description of the invention

The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the utility model monnolithic case schematic diagram；

Fig. 2 is the square piece eyeglass schematic diagram in the utility model；

Fig. 3 is the design principle schematic diagram of the utility model.

Drawing reference numeral explanation: 100, mirror holder, 101, the bridge of the nose, 102, glass frame pin head, 103, nose support, 200, eyeglass, 201, eye Mirror symmetrical centre, 202, lens optical center, 203, eyeglass geometric center, 300, circular eyeglass, 400 square piece eyeglasses.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model Limitation.

The utility model is further described with specific embodiment with reference to the accompanying drawing.

Shown in please referring to Fig.1 to Fig.3, a kind of reading glasses using square piece, including mirror holder 100 and eyeglass 200, the mirror Frame 100 further includes having the bridge of the nose 101, glass frame pin head 102 and nose support 103, it is characterised in that: the eyeglass 200 is served as reasons in a pre-installation Diameter is the square piece eyeglass 400 that the circular eyeglass 300 of 70mm is process comprising symmetrical two arc-shaped edges and two straight lines, The distance between its two arc-shaped edges are 70mm, the distance between two straight lines are 42mm, and when installation will be on the square piece eyeglass 400 Lens optical center point 202 compared to eyeglass geometric center point 203, after deviating 4.5-6.5mm to glasses symmetrical centre 201, Cut-parts fixed installation is carried out again.

According to Chinese middle-aged and the old head feature, the centre plane width of presbyopic glasses user is 138~145mm, therefore, in order to Agree with glasses more with user, the overall width of the mirror holder 100 is 138-142mm, and 101 length of the bridge of the nose is 18mm.

In order to keep 200 appearance of eyeglass more harmonious, and cover the eye of user, 200 width of the eyeglass after installation For 30mm, 200 length of eyeglass is 53mm.

Produce in batches operation in, the camber in mirror holder frame face be it is fixed, to keep eyeglass camber and the frame of different degrees curved Degree matches, and reaches frame piece cooperation beauty, therefore needs the positive camber of eyeglass unified.When front lens surface camber is fixed, back lens surface Camber need to be less than positive camber, form convex lens, could generate positive degree.Need are formed to meet the diopter of correction of 400 degree of eyeglasses It asks and the back side will be designed as cambered surface to adapt to human eye, the positive camber of the eyeglass 200 is designed as 500C.

Due to needing to be processed according to picture frame type when eyeglass installation, and user is mostly the middle-aged and the old, for the ease of processing, Prevent user from falling damage simultaneously, the lens materials are PC.

The design principle of the utility model it is such: referring to shown in Fig. 3, close due to Chinese is generally with interpupillary distance 58-62mm, therefore, the OCD (horizontal distance between 2 lens optical center points 202) of the utility model need to be set as 58- 62mm.But the center of two frames in mirror holder 100 away from E ratio OCD it is big (between 2 lens optical center points 202 it is horizontal away from From), so square piece eyeglass carries out installation fixation after needing to carry out the shifting heart again, from the figure 3, it may be seen that the length A of eyeglass, the bridge of the nose 101 Length is D,

Heart amount X=(A+D)/2-OCD/2 is moved,

So eyeglass radius R > A/2+X=A+D/2-OCD/2,

For example, bridge of the nose 101D length D is by the utility model preferred embodiment it is found that 200 length A of eyeglass is 53mm 18mm, the horizontal distance OCD between 2 lens optical center points 202 are 58mm, R > 53+18/2-58/2=33；

Simultaneously in view of 1~2mm of edge of circular eyeglass 300 is unavailable,

R=35 is enabled, i.e. the diameter of circular eyeglass 300 is 70mm, to realize that minimum diameter eyeglass meets professional frame designs With the demand of wearing.

In general, eyeglass uses circular eyeglass 300, so required size is smaller in vertical direction actually cutting out in square piece. General eyeglass vertical direction height is that 40mm can meet frame demand, it is contemplated that 1~2mm of lens edge is unavailable, therefore mirror Piece vertical height is designed as 42mm, while square piece is additionally favorable for the eyeglasses of cut-parts in production and fixes, to ensure the precision of cut-parts.

Therefore, as shown in Fig. 2, the utility model installs the 70mm*42mm of preceding 400 size of square piece eyeglass used,

The designing points of the utility model are to have used the square piece eyeglass 400 of specific dimensions, can will when facilitating installation The optic center point of eyeglass carries out a certain range of displacement, so that the horizontal distance of its two optic center point is equal to the close of human eye and uses pupil Away from, it allows user that can clearly regard object, does not generate visual fatigue and deformation, while square piece is additionally favorable for the eyeglasses of cut-parts in production and fixes, To ensure the precision of cut-parts.

Although those familiar with the art answers the foregoing describe specific embodiment of the present utility model Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should Cover in the scope of the claimed protection of the utility model.

Claims (7)

1. a kind of reading glasses using square piece, including mirror holder and eyeglass, the mirror holder further includes having the bridge of the nose, glass frame pin head and nose Support, it is characterised in that: the eyeglass be in a pre-installation be 70mm as diameter circular eyeglass symmetrical machining made of square piece eyeglass, It includes symmetrical two arc-shaped edges and two straight lines, and the distance between two arc-shaped edges are 70mm, the distance between two straight lines It is symmetrical to glasses by the lens optical center point on the square piece eyeglass compared to eyeglass geometric center point when installation for 42mm Cut-parts are fixedly mounted after off-centring 4.5-6.5mm.

2. a kind of reading glasses using square piece according to claim 1, it is characterised in that: the overall width of the mirror holder is 138-142mm。

3. a kind of reading glasses using square piece according to claim 1, it is characterised in that: the bridge of the nose length is 18mm.

4. a kind of reading glasses using square piece according to claim 1, it is characterised in that: the mirror widths are 30mm.

5. a kind of reading glasses using square piece according to claim 1, it is characterised in that: the eyeglass length is 53mm.

6. a kind of reading glasses using square piece according to claim 1, it is characterised in that: the front lens surface camber design For 500C.

7. a kind of reading glasses using square piece according to claim 1, it is characterised in that: the lens materials are PC.