CN2251733Y

CN2251733Y - Sunglasses with increasing colour sense and reducing reflecting function

Info

Publication number: CN2251733Y
Application number: CN 95224518
Authority: CN
Inventors: 郑舒颖
Original assignee: BEIJING INST OF ELECTRO-OPTICS
Current assignee: BEIJING INST OF ELECTRO-OPTICS
Priority date: 1995-10-24
Filing date: 1995-10-24
Publication date: 1997-04-09
Anticipated expiration: 2005-10-24

Abstract

The utility model relates to a pair of sunglasses with the functions of increasing colour sense and reducing reflection, which is composed of glasses lenses, a glasses frame and glasses legs. Light interference absorption layers are coated on the inner surfaces of the lens bases of the glasses lenses, the coating layers are divided into an upper and a lower parts by the boundary lines of horizontal lines which are 4 mm to 6 mm above the pupil positions of people who wear glasses, the average transmittance of the visible spectrum of the upper parts forms a gradually declined tendency, and the average transmittance of the visible spectrum of the lower parts is controlled within the range from 0.08 to 0.40. Full medium wideband anti-reflecting film is coated on the outer surfaces of the lens bases, which causes the average transmittance of the visible spectrum of the outward reflection and the inward reflection of the glasses lenses to be reduced. Thereby, the purposes of beautiful appearance and practicality are achieved.

Description

Strengthen colour vision and reduce the reflection sunglasses

The utility model relates to a kind of enhancing colour vision and reduces the reflection sunglasses, belongs to the sunglasses category in the optical technology.

According to current scientific level, the achromate still can not cure, and still, can improve its distinguishing ability to color by some light filters, and this has been well known fact.On the other hand, therefore most achromates work and live under strong sunshine for feeling ability and the normal person and the indifference of brightness, and the achromate needs to wear sunglasses too, in order to avoid be subjected to excessive solar radiation to the fine damage of eye.But also there is not to occur being fit to the sunglasses that the achromate wears so far.China utility model patent 2L93216259.2 " plated film color correction glasses ", ZL93205201.0 " a kind of able to correct colour vision glasses ", though can improve its chromatic discrimination power to the achromate, but its visible spectrum transmissivity is all too high, should not be used as sunglasses, and the spectrum average reflectance is also too high simultaneously, make the contrast reduction of wearer visual field, influence vision, also make the ornamental grievous injury that is subjected to of glasses, can not meet the demands.

The purpose of this utility model is that a kind of sunglasses that colour vision reduces reflection that strengthens will be provided, and it can increase the achromate differentiates the ability of color and stop the stimulation of excessive solar radiation to eyes, and makes glasses reach decorative effect.

The purpose of this utility model is achieved in that this enhancing colour vision reduces the sunglasses of reflection, by lens, picture frame and mirror leg constitute, on the inside surface of lens sheet base, be coated with the interference light absorption layer, this coating is the separatrix with the horizontal line at 4-6mm place, wearing spectacles people pupil position top, be divided into two parts up and down, the average transmittance of top visible spectrum is the trend that reduces gradually, the average transmittance of lower part visible spectrum is in the 0.08-0.40 scope, and on the outside surface of sheet base, be coated with full medium wide band antireflective film, make lens export-oriented and interior, thereby reach both artistic and practical purpose to the reduction of spectrum of reflected light average reflectance.

Advantage of the present utility model:

1, because the sheet base of the utility model lens, in the decide coating of part above the horizon, make the spectrum average transmittance in visible spectrum zone far be the trend that reduces gradually with the leaving water horizontal line, simultaneously under the effect that is coated with the interference light absorption layer, when the achromate is worn, both the sunglasses effect can be played, the ability that it recognizes color can be increased again.Through the test to use the utility model person surplus 500,100% achromate reaches to strengthen and recognizes color and prevent the effect that high light stimulates.

2, because the coating on inner surface of the utility model eyeglass is the light absorption type, and good reflection preventing ability is arranged in whole visible spectrum zone, the spectral reflectivity of two parts up and down of lens is as one man reduced to very low numerical value, so two-part horizontal separatrix is not obvious up and down for glasses, it is clear to look thing, the outward appearance of glasses is good, and is ornamental strong.

3, owing to the spectral-transmission characteristics at the following partial coating in the horizontal separatrix of glasses is neutral, when making the achromate utilize horizontal separatrix to observe things with the lower part lens, the spectral distribution of lens transmissivity is constant substantially, just the neutral decay of transmissivity has been played and has been prevented solarization, so that the people can not change the impression of things to external world before not wearing glasses, and feel nature, comfortable.

The utility model concrete structure is provided by following examples and accompanying drawing thereof:

Fig. 1 is the utility model stereographic map.

Fig. 2 is the A-A cut-open view of Fig. 1.

Describe in detail below in conjunction with accompanying drawing 1,2.

With reference to Fig. 1,2, this increases colour vision and reduces the reflection sunglasses by lens 1, picture frame 2 and mirror Leg 3 consists of, and it is characterized in that on the inner surface of sheet base 4 of lens 1, is coated with interference light and absorbs Layer, this coating is divided into 6 two parts in top 5 and bottom, two

parts

5,6 level branch Boundary line 7 is positioned in wearing spectacles person's pupil position top is apart from pupil center 4-6mm place, at lens Horizontal line of demarcation 7 above parts 5, with the distance horizontal line of demarcation 7 increase, the visible spectrum zone The spectrum average transmittance be the trend that reduces gradually; In horizontal line of demarcation 7 following parts 6,400-720nm SPECTRAL REGION, the spectrum average transmittance of lens is in the 0.08-0.40 scope In; Outer surface at sheet base 4 is coated with full medium wide band antireflective film 8, at 400-720nm SPECTRAL REGION, the spectrum average reflectance of extroversion 10 reflections of lens is at the 0.01-0.20 model In enclosing, the interior spectrum to 9 reflections of glasses is on average anti-in the 400-720nm SPECTRAL REGION The rate of penetrating is in the 0.01-0.10 scope.

The utility model embodiment one, mainly be applicable to the protanopia anerythrochloropsia patient, its concrete structure is: on the inside surface of the sheet base 4 of lens, the interference light absorption layer that is plated on the top 5 of horizontal separatrix 7, become the spectral transmission rate curve of lens to be the long-pass shape, promptly in the 400-520nm SPECTRAL REGION, the spectrum average transmittance is in the 0.008-0.02 scope, in the 620-720nm SPECTRAL REGION, the spectrum average transmittance is in the 0.08-0.40 scope; In the 520-620nm SPECTRAL REGION, spectral-transmission favtor increases gradually with the growth of wavelength.

The utility model embodiment two, mainly be applicable to other achromates, its concrete structure is: on the inside surface of the sheet base 4 of lens 1, the interference light absorption layer that is plated on the top 5 of horizontal separatrix 7, become the spectral transmission rate curve of lens to be a long short-pass shape, in the 400-500nm SPECTRAL REGION, the spectrum average transmittance is in the 0.06-0.30 scope; In the 620-720nm SPECTRAL REGION, the spectrum average transmittance is in the 0.08-0.40 scope; In the 525-570nm SPECTRAL REGION, the spectrum average transmittance is in the 0.01-0.06 scope; In the 500-525nm SPECTRAL REGION, the spectrum average transmittance increases with wavelength and descends; In the 570-620nm SPECTRAL REGION, the spectrum average transmittance increases with wavelength.

Among the utility model embodiment, the sheet base 4 of lens can be the lens with dioptric or zero diopter, sheet base 4 materials can be optical glass, CR39 resin sheet or polycarbonate sheet and all coatings all are under high vacuum condition, adopt the physical vapor deposition method, promptly the optical vacuum film plating process is prepared from.

Claims

1, a kind of enhancing colour vision reduces the reflection sunglasses, by lens (1), picture frame (2) and mirror leg (3) constitute, it is characterized in that on the inside surface of sheet base (4) of lens (1), be coated with the interference light absorption layer, this coating is divided into (6) two parts in top (5) and bottom, two parts (5), (6) horizontal separatrix (7) is positioned in wearing spectacles person's pupil position top is apart from pupil center 4-6mm place, in the horizontal separatrix (7) of lens with top (5), with the increase of the horizontal separatrix of distance (7), the spectrum average transmittance in visible spectrum zone is the trend that reduces gradually; With lower part (6), in the 400-720nm SPECTRAL REGION, the spectrum average transmittance of lens is in the 0.08-0.40 scope in horizontal separatrix (7); Outside surface at sheet base (4) is coated with full medium wide band antireflective film (8), and in the 400-720nm SPECTRAL REGION, the extroversion of lens (10) spectrum of reflected light average reflectance is in the 0.01-0.20 scope; In the 400-720nm SPECTRAL REGION glasses interior to (9) spectrum of reflected light average reflectance in the 0.01-0.10 scope.

2, reduce the reflection sunglasses by the described enhancing colour vision of claim 1, it is characterized in that on the inside surface of the sheet base (4) of lens, the interference light absorption layer that is plated on the top (5) of horizontal separatrix (7), become the spectral transmission rate curve of lens to be the long-pass shape, promptly in the 400-520nm SPECTRAL REGION, the spectrum average transmittance is in the 0.008-0.02 scope; In the 620-720nm SPECTRAL REGION, the spectrum average transmittance is in the 0.08-0.40 scope; In the 520-620nm SPECTRAL REGION, spectral-transmission favtor increases gradually with the growth of wavelength.

3, reduce the reflection sunglasses by the described enhancing colour vision of claim 1, it is characterized in that on the inside surface of the sheet base (4) of lens (1), the interference light absorption layer that is plated on the top (5) of horizontal separatrix (7), become the spectral transmission rate curve of lens to be length-short-pass shape, in the 400-500nm SPECTRAL REGION, the spectrum average transmittance is in the 0.06-0.30 scope; In the 620-720nm SPECTRAL REGION, the spectrum average transmittance is in the 0.08-0.40 scope; In the 525-570nm SPECTRAL REGION, the spectrum average transmittance is in the 0.01-0.06 scope; In the 500-625nm SPECTRAL REGION, the spectrum average transmittance increases with wavelength and descends; In the 570-620nm SPECTRAL REGION, the spectrum average transmittance increases with wavelength.