CN102879921A

CN102879921A - Glasses (clamping pieces) for eliminating reflection of light on blackboard and preparation method thereof

Info

Publication number: CN102879921A
Application number: CN 201210425042
Authority: CN
Inventors: 陈利
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-10-21
Filing date: 2012-10-21
Publication date: 2013-01-16
Also published as: CN103268024A

Abstract

The invention relates to a pair of polaroid glasses and glass clamping pieces for eliminating the reflection of light on a blackboard and a preparation method of the pair of polaroid glasses and the glass clamping pieces. The core method comprises the steps as follows: determining the polarization direction of the polarized lenses; utilizing a locator to locate the polarization direction of the polarized lenses, and assembling the ground polarized lenses onto a spectacle frame (a clamping piece frame or attaching polarizing films to ordinary glass lenses) to obtain a finished product; and enabling a polarizing axis to be in the horizontal direction when in use. When used for seeing a target (such as letters on the blackboard) irradiated by side light 1, the pair of glasses 3 (clamping pieces) is free from the influence of dazzling light 2, the target has soft and thick colors and can be seen clearly, and the pair of glasses 3 can be used very conveniently for various people with nearsightedness, farsightedness, astigmatism, and the like.

Description

Eliminate glasses (intermediate plate) and the compound method thereof of blackboard reflective light

Technical field

The present invention relates to a kind of reflective polaroid glasses, glasses clamping piece and their compound methods such as blackboard, show window of eliminating.

Background technology

The present various polaroid glasses of design, all be confined to the dead ahead or directly over the filtration of the string light (horizontal polarization light) that produces of incident light irradiation on, its principle is as shown in Figure 1.Be usually used in the aspects such as fishing, driving, the string light (vertical polarized light is such as blackboard reflective light) of the side direction incident illumination being penetrated generation has no filtration.

In recent years, the multimedias such as various projector, interactive electric whiteboard and TV blank are used for education activities to some extent, although these multimedia blanks (or cloth), can avoid the reflective of traditional blackboard, but consumptive material is all very expensive, popularity rate is not high, and increasing school finds in top class in a kindergarten's teaching practice of China: these multimedias can only as a kind of aided education instrument in the conventional teaching, all can't replace traditional black board teaching fully.Therefore, no matter be university or middle and primary schools, the utilization rate of blackboard is still very high.But various blackboards or the green plate sold in the market use to make after a period of time the student cannot see writing on the blackboard because of reflective, and this problem is perplexing student and teacher for many years always, affects student's study.At present, polarization knowledge is very few for the research on the problem that solves side direction incident light irradiation generation string light, designed " polarized light glasses for blackboard reflect light " that a kind of number of patent application is CN89201097.5 although there was a side in middle school, Yangzhou, Jiangsu Province to study teacher before two more than ten years, but be not difficult to find out that from his design proposal he knows that not the polarisation of light direction of blackboard " reflective " fixes, cause him to design needs " rotate adjustment with the polarized lenses of circle " in picture frame glasses, the production of this glasses and use are all inconvenient, to such an extent as to the glasses that also do not have so far him to design come out, the problem that the student cannot see writing on the blackboard because of blackboard reflective light is not also effectively solved so far.

Summary of the invention

The purpose of this invention is to provide a kind of reflective polaroid glasses, glasses clamping piece and their compound methods such as blackboard, show window of eliminating.Put on this glasses (intermediate plate), when looking at the blackboard writing on the blackboard, be not subjected to the impact of string light, easy to use, consumptive material is cheap, and polaroid and all kinds of ball (post) mirror composite design prepare this type of glasses, and all kinds of crowds such as myopia, long sight, amblyopia, astigmatism that also are applicable to use.

Core compound method involved in the present invention is: determine that (general polarized lenses has bearing mark for the polarization direction of polarized lenses, if directionless mark, then can overlap placement with the polarized lenses of a known polarization direction, the fixedly polarized lenses of known direction and constantly rotation polarized lenses to be measured, when the Natural light intensity by two polarized lenses is 0, the direction of polarized lenses to be measured is vertical with known polarized lenses polarization direction, do lower direction mark for polarized lenses to be measured), utilize the polarization direction of orientator location polarized lenses, make the polarized lenses after grinding be assembled to spectacle frame (or intermediate plate frame, or polarizing coating is attached to the common eyeglass that grinds) on when becoming finished product and normally using (such as Fig. 5), its polarization axle becomes horizontal direction, namely just shine the string polarisation of light perpendicular direction that produces with the side direction incident light, its principle as shown in Figure 2.The below analyzes the blackboard reflective light problem from optical angle, the student see that the blackboard reflection comes only by the side direction incident light through the surface reflection of blackboard and the result of the specular reflectance light that comes and the stack that diffuses.Diffusing is nonpolarized light, is that the student sees the required regular reflection light of writing on the blackboard clearly; The string light of the specular reflectance that forms from side direction incident then makes the student cannot see writing on the blackboard, and this string light belongs to polarized light.When the polarization direction of polarized light was vertical with the polarization direction of polarized lenses, this polarized light can't see through this polarized lenses.The present invention is exactly the polaroid glasses (intermediate plate) of eliminating the string light of side direction incident light irradiation generation according to a class of this principle design processing, put on this glasses (intermediate plate) and both can eliminate the blackboard string light (being commonly called as reflective) that the vertical direction electric oscillation of side direction incident light irradiation generation causes, kept again simultaneously the nonpolarized light that comes from the blackboard surface diffuse reflectance, make the color of writing on the blackboard soft, dense, seen clearly by the people and to know Chu.

Description of drawings

Fig. 1 is the design concept figure of at present existing polariscope.The polaroid glasses 3 of selling in the market, be fit to the natural light 1 by dead ahead (or directly over) incident, be reflected into the polarized light 2 of polarization direction level through level (or vertically) face, this polarized light can't become by polarization axle the polaroid glasses 3 of vertical direction.

Fig. 2 is the design concept figure of " glasses (intermediate plate) of eliminating blackboard reflective light ".By the natural light 1 of side direction incident, be reflected into the vertical polarized light in polarization direction 2 through reflecting surface, it can't become by polarization axle the polaroid glasses 3 of horizontal direction.

Fig. 3 is the pictorial diagram of " polaroid glasses of eliminating blackboard reflective light ".Grind (pad pasting) good polarized lenses 2 and be installed on the mirror holder 1 (outward appearance of mirror holder can freely be selected, and not limiting is exactly 1 style among Fig. 3), when glasses were normally used, the polarization axle of its eyeglass became horizontal direction.

Fig. 4 is the pictorial diagram of " the polaroid glasses intermediate plate of eliminating blackboard reflective light ".The polarized lenses 2 of well cutting is installed on the intermediate plate frame 1 (appearance forrns of intermediate plate frame etc. can freely be selected, and not limiting is exactly 1 style among Fig. 4), and when glasses clamping piece was normally used, the polarization axle of its eyeglass became horizontal direction.

Fig. 5 shows the use state of described " when normally using " demonstration everywhere in the book.

Embodiment

Embodiment one: the compound method of eliminating the polaroid glasses (such as Fig. 3) of blackboard reflective light:

1) number of degrees (comprising zero diopter) are determined in optometry, choose the polarized lenses of the corresponding number of degrees;

2) choose suitable mirror holder 1, make the template that grinds eyeglass according to mirror holder;

3) determine the polarization direction of polarized lenses, utilize polarization direction, centralized positioning instrument location, eyeglass 2 after grinding is assembled to becomes finished glasses (such as Fig. 3) when normally using (with reference to Fig. 5) on the mirror holder 1, and its polarization axle becomes horizontal direction;

4) eyeglass of having good positioning is ground shaping through wafer lapping machine, then eyeglass 2 bevellings that have been shaped, chamfering, polishing, fit on mirror holder 1, cleaning, check, make qualified glasses.

Embodiment two: the compound method of eliminating the glasses clamping piece (such as Fig. 4) of blackboard reflective light:

1) chooses the polarized lenses of making glasses clamping piece;

2) choose intermediate plate frame 1, make the template of intermediate plate;

3) determine the polarization direction of polarized lenses, utilize polarization direction, centralized positioning instrument location, when polarized lenses 2 after the cutting being installed to become on the intermediate plate frame 1 finished product to clip on the glasses normal the use (such as Fig. 5), its polarization axle becomes horizontal direction;

4) according to the intermediate plate template with polarized lenses cutting forming, bevelling, chamfering, polishing, fit on intermediate plate frame, cleaning, check, make qualified glasses clamping piece (such as Fig. 4).

Embodiment three: the method for adhering film of the polarizing coating of the pad pasting glasses of elimination blackboard reflective light is as follows:

1) chooses polarization pad pasting with adhesive sticker;

2) take off the eyeglass of the common spectacles that has ground;

3) determine the polarization direction of polarizing coating, and polarizing coating be attached on the lens that eyeglass after the system of subsides is assembled to become finished glasses on the mirror holder when normally using, its polarization axle becomes horizontal direction;

4) with pad pasting excision unnecessary on the eyeglass, then the eyeglass fit on mirror holder that posts shaping, clean, check, make qualified pad pasting polaroid glasses (same Fig. 3).

Claims

1. polaroid glasses of eliminating blackboard reflective light, glasses clamping piece and their compound method, these glasses (intermediate plate) are to be assembled by polarized lenses and mirror (intermediate plate) frame, it is characterized in that: the polarization direction of determining polarized lenses, utilize the polarization direction of orientator location polarized lenses, make the polarized lenses after grinding be assembled to spectacle frame (or intermediate plate frame, or polarizing coating is attached to the common eyeglass that grinds) on when becoming finished product and normally using, its polarization axle becomes horizontal direction, the polarization direction of the string light (vertically polarized light) that namely just produces with side direction incident light irradiation is vertical, polaroid and all kinds of ball (post) mirror composite design are prepared this type of glasses, are applicable to myopia, long sight, amblyopia, all kinds of crowds such as astigmatism used.

2. the compound method of polaroid glasses according to claim 1 (intermediate plate), it is characterized in that: the polarization direction of location polarized lenses, polarized lenses after grinding is assembled to become finished product on the spectacle frame (or intermediate plate frame or polarizing coating is attached to the common eyeglass that grinds) when normally using, its polarization axle becomes horizontal direction.

3. polaroid glasses intermediate plate according to claim 1 is characterized in that: be assemblied in the direction of the polarization axle of the polarized lenses on the glasses clamping piece, become horizontal direction when normal the use.

4. polaroid glasses according to claim 1, it is characterized in that: polaroid glasses can directly be used polarization ball (post) eyeglass, are mixed with the polaroid glasses that polarization axle becomes horizontal direction; Also available polarizing coating is attached on the eyeglass of the common spectacles for preparing, and is made into the polaroid glasses that polarization axle becomes horizontal direction; Can also directly be mixed with zero degree (the being commonly called as zero diopter) polaroid glasses that polarization axle becomes horizontal direction with polarized lenses.

5. " polarization axle becomes horizontal direction " according to claim 4 is characterized in that: the polaroid glasses that prepare are when normal the use, and its polarization axle position is horizontal direction.