CA2014000A1 - Device and composition for cleaning optical surfaces - Google Patents
Device and composition for cleaning optical surfacesInfo
- Publication number
- CA2014000A1 CA2014000A1 CA 2014000 CA2014000A CA2014000A1 CA 2014000 A1 CA2014000 A1 CA 2014000A1 CA 2014000 CA2014000 CA 2014000 CA 2014000 A CA2014000 A CA 2014000A CA 2014000 A1 CA2014000 A1 CA 2014000A1
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- Prior art keywords
- cleaning
- support body
- cleaning composition
- cleaning pad
- handle
- Prior art date
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Abstract
ABSTRACT OF THE DISCLOSURE
A device for cleaning lenses and other optical surfaces comprising a cleaning pad for cleaning an optical surface, attached to a support body. The support body may be made of a resilent material and may be specially shaped to enable self-adaptation capability of the support body to different surfaces being cleaned.
Specially formulated dry cleaning composition is included in the invention for actively removing greasy residues from optical surfaces, and may be applied on the cleaning pad to enable quick and efficient performance. Moreover, the device may further comprise an elongated handle to enable a familiar and convenient pen-like grip of the device and to function as a housing for a brush used for preliminary cleaning. A cap may also be provided as part of the device to protect the cleaning pad and the support body as well as to provide cleaning composition to the cleaning pad. The present invention uses dry cleaning composition to directly adsorb greasy residues from the surface being cleaned, and avoids inconveniences of other cleaning methodes. The device of the invention provides the user with instant readiness for use, quick cleaning action, and easy carrying and handling.
A device for cleaning lenses and other optical surfaces comprising a cleaning pad for cleaning an optical surface, attached to a support body. The support body may be made of a resilent material and may be specially shaped to enable self-adaptation capability of the support body to different surfaces being cleaned.
Specially formulated dry cleaning composition is included in the invention for actively removing greasy residues from optical surfaces, and may be applied on the cleaning pad to enable quick and efficient performance. Moreover, the device may further comprise an elongated handle to enable a familiar and convenient pen-like grip of the device and to function as a housing for a brush used for preliminary cleaning. A cap may also be provided as part of the device to protect the cleaning pad and the support body as well as to provide cleaning composition to the cleaning pad. The present invention uses dry cleaning composition to directly adsorb greasy residues from the surface being cleaned, and avoids inconveniences of other cleaning methodes. The device of the invention provides the user with instant readiness for use, quick cleaning action, and easy carrying and handling.
Description
-`- 2~140~
DEVICE AND COMPOSITION FOR CLEANING OPTICAL SURFACES
This invention relates to cleaning devices, particularly to devices for cleaning optical surfaces and more specifically to devices for cleaning camera lenses and optical surfaces of variety of optical instruments. Furthermore, it relates to cleaning substances used for cleaning optical surfaces and particularly to dry substances used for cleaning optical surfaces.
Various articles and instruments having any kind of optical surface like: cameras, lenses, binoculars, telescopes, viewfinders, magnifiers, teodolites and the like, are subject to become dirty in the course of their use. In order to maintain a good performance of these articles, their optical surfaces have to be free from fingerprints, acumulated dust, oily deposits, and greasy or rain water residues. For this purpose said optical surfaces should be thoroughly cleaned by using a proper cleaning methode, which would be effective, efficient, and safe, particularly when it is applied to clean more delicate, plastic or coated surfaces. In case of some residues such as acids left by fingerprints on coated optical surfaces an immediate cleaning is necessary in order to prevent a permanent damage to the antireflection coatings.
The user of optical instruments and the like faces rather limited choice of methodes and devices that can be used for cleaning thair optical surfaces. Commonly used articles for cleaning these optical surfaces are brush or blower. However, only dust, sand,or other loose particles can be fairly effe~tively removed when using these articles, thus limiting their function to preliminary cleaning. The most widely used methode for cleaning optical surfaces is apparently wiping methode applying various types of wiping means like soft cloth, chamois, or tissue paper.
Variety of articles have been developed to hold or support these wiping means like those described and illustrated in United States Patent No. 2,055,314, dated Sept. 22, 1936, granted to Seburger for an "Eyeglass Cleaner" or United States Patent No.
DEVICE AND COMPOSITION FOR CLEANING OPTICAL SURFACES
This invention relates to cleaning devices, particularly to devices for cleaning optical surfaces and more specifically to devices for cleaning camera lenses and optical surfaces of variety of optical instruments. Furthermore, it relates to cleaning substances used for cleaning optical surfaces and particularly to dry substances used for cleaning optical surfaces.
Various articles and instruments having any kind of optical surface like: cameras, lenses, binoculars, telescopes, viewfinders, magnifiers, teodolites and the like, are subject to become dirty in the course of their use. In order to maintain a good performance of these articles, their optical surfaces have to be free from fingerprints, acumulated dust, oily deposits, and greasy or rain water residues. For this purpose said optical surfaces should be thoroughly cleaned by using a proper cleaning methode, which would be effective, efficient, and safe, particularly when it is applied to clean more delicate, plastic or coated surfaces. In case of some residues such as acids left by fingerprints on coated optical surfaces an immediate cleaning is necessary in order to prevent a permanent damage to the antireflection coatings.
The user of optical instruments and the like faces rather limited choice of methodes and devices that can be used for cleaning thair optical surfaces. Commonly used articles for cleaning these optical surfaces are brush or blower. However, only dust, sand,or other loose particles can be fairly effe~tively removed when using these articles, thus limiting their function to preliminary cleaning. The most widely used methode for cleaning optical surfaces is apparently wiping methode applying various types of wiping means like soft cloth, chamois, or tissue paper.
Variety of articles have been developed to hold or support these wiping means like those described and illustrated in United States Patent No. 2,055,314, dated Sept. 22, 1936, granted to Seburger for an "Eyeglass Cleaner" or United States Patent No.
2,g58,015, dated Jan. 4, 1949, granted to McDonald for "Eyeglass Wiping Device" or another United States Patent No. 2,880,441, dated April 7, i959, granted to Rushing, Jr for "Cleaner For Optical Lenses And The Like. n Also another United States Patent No.
4,480,352 dated Nov. 6, 1984, granted to Eggett for ~Apparatus For Cleaning Lenses, Mirrors And The Like" and United States Patent No.
~,546,517 dated Oct. 15, 1985, granted to Caniglia for ~Wiping Device. n The means, for merely wiping off optical surfaces, have the disadvantage of not quickly or effectively removing greasy residues from the optical surface and furthermore are susceptible to spreading oily spots ~over the cleaned surface causing flare and diffusion of the image.
In some cases it may be helpful to ligtly breath on the 2 ~
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:
surface causing fine condensation of moisture on it and than wipe it off, but yet not satisfactory enough.
Of generally known methodes, apparently the most effective are the ones that use various solvants in addition to using the wiping means. When using these methodes, a solvant is first applied on the surface being cleaned in order to disolve the residues, and then it is absorbed by wiping means, during cleaning process.
These methodes, although more effective than the other ones are more inconvenient and cumbersome since one has to handle several articles simultaneously, like: wiping means, an article to be cleaned and a bottle containing solvant. The bottle has to be opened, the solvant has to be applied and wiped dry with wiping means, than the bottle has to be tightly closed and the wiping means is usually discarded. Also, the addition of solvants to the cleaning procedure poses a risk of spillage spreading to unwanted places.
In the light of the above it seems that the consumer has to choose between more convenient but less effective products like -brush, blower or merely wiping means and less convenient but more effective ones like combinations of solvants and wiping means.
In the liqht of recent environment protection awarness it has to be stressed that most of the means used for cleaning optical surfaces, whlch are currently available on the market, are usually discarded after the use and contribute to environment pollutlon.
Considering the field of methodes and devices for cleaning optical surfaces, it is desirable to have a product that will incorporate 2~ ~00~ -conveniency, effectiveness, and efficiency and at the same time will be environmentally safe. It is essential, also, that it will be safe for the user.
Our invention embodies products and a methode that better meet these desirable features.
The present invention provides a device which is held by one hand and driven in a quick wiping motion, conveniently and more effectively cleaning an optical surface. Further, it provides a special cleaning composition to be comprised and used with the device. Along with the above, the use of the invention does not leave waste materials to be discarded after the use and in this aspect contributes to cleaner environment.
According to one aspect of the invention there is provided a cleaning composition for cleaning optical surfaces, comprising soot, for the use with the device of the invention. In the same aspect, it may further comprise hemihydrate of calcium sulphate to improve cleaning capability of the composition. The ratio by weight of soot to calcium sulphate may be 5~ to 95~ respectively. Still in the same aspect, the composition of soot and calcium sulphate mixed together may be aggregated by adding water to it and allowing it to set.
According to another aspect of the invention there is provided a device comprisinq a cleaning pad made of chamois, soft cloth or the like, ~n elongated support body, and an adhesive means. At least one end of the support body has a surface, and the 2~ ~00~
cleaning pad is attached to this surface with adhesive means. The support body may be made of rigid ~aterial and may have predetermined concave configuration of the surface. In the same aspect it may further comprise a handle for holding the support body and a cap for protecting the cleaning pad and the support body. In yet the same aspect the cleaning composition may be applied onto the cleaning pad.
According to an additional aspect of the invention there is provided a device comprising a cleaning pad made of chamois, soft cloth or the like, an elongated support body made of resielent material, and an adhesive means. At least one end of the support body has a surface. The surface may have a concave configuration.
The pad is attached to the surface with adhesive means. The adhesive means may be a pliable glue. In the same aspect the support body may be cone shaped. The end portion of the support body, adjacent to the surface, may be shaped like a bell. In still the same aspect, the device may further comprise a handle for holding the support body.
The handle may be made of rigid material and may have a cylindrical shape. The handle may have a conical bore along its axis in one of its ends for attaching the support body to the handle. The handle may have a cylindrical bore along its axis in the end oposing the end having the conical bore. The wall defining the cylindrical bore may have a slot extending lengthwise. The handle may have a brush placed inside the cylindrlcal bore. The brush may have a member attached to it. The 2 ~ 0 ~
member may protrude through the slot and may be used to slide the brush out of the handle or into the handle. Further in the same aspect of the invention, the device further comprises a cap for protecting the cleaning pad and the support body. The cap may be a hollow cylindrical body. One end of the cylindrical body is open and the other one is closed, being the bottom of the cap. The aggregated cleaning composition may be placed on the bottom of the cap.
Accordinq to a further aspect, the cap may be a hollow cylindrical body. One end of the cylindrical body is open and the other one is closed, being the bottom of the cap. The cap may further comprise a biasing means placed on the bottom of the cap.
The biasing means may be a soft resilent material like urethane foam. The cap may also comprise a cup shaped body made of rigid material. It may be placed on the biasing means. The cavity of the cup shaped body is facing the open end of the cap. The cup shaped body contains the aggregated cleaning composition. Adhesive means may be used to attach the biasing means to the bottom of the cap and the cup shaped body to the biasing means.
The invention, as exemplified by preferred embodiment, is described with reference to the drawings in which:
FIGURE 1 is a perspective view of an embodiment of a device of the invention;
FIGURE 2 is a sectional view of the suuport body and the cleaning pad of the device of the invention shown in FIGURE 1.
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FIGURE 3 is a sectional view of the device of the invention shown in FIGURE l;
FIGURE 4 is an exploded, sectional view of the cap of the device of the invention shown in FIGURE l and in FIGURE 3;
and FIGURE 5 is the exploded, top view of the brush of the invention shown in FIGURE 1 and in FIGURE 3.
In the reference to the drawings, the preferred embodiment of the invention illustrated, a device 10 comprises a handle 11, support body 12, a cleaning pad 19, a cap 20, and a brush 30. The handle 11 has cylindrical shape. One end of the handle 11 has a conical bore along its axis and is forming a receptacle holding the support body 12 which is attached to the handle 11 by inserting the vertex portion of the support body 12 into the conical bore of the handle 11 as it is shown in FIG.3. The opposite end of the handle 11 has a cylindrical bore 17 extending axially and forming a tubular duct for the brush 30 as seen in FIG. 3. The wall 19 defining the cylindrical bore 17 has a slot 16 to allow the member 33, attached to the base portlon 31, to protrude outside the wall 19 and to move along the slot 16, driving the brush 30 in and out of the handle 11 as shown In FIG. 3 and in FIG. 1. The end portlon of the handle 11, defininq the conical bore, is 2 ~
externally narrower forming a neck 15 in order to allow the engagement of the handle 11 with the cap 20. The length and diameter of the neck lS and the length and diameter of the engaging, interior portion of the cap 20 are such that a reasonable amount of force is required to mount the cap on the neck 15 of the handle 11 in order to prevent the cap from accidently sliding off the neck 15. The edge 50, limiting the neck 15, and the edge 51 of the open end of the cap are definite as seen in FIG. 3 and in FIG. 4. This being done so that the cap 20 may be stopped at exactly desired position enabllng the necessary, predetermined contact between the aggregated cleaning composition 24 and the cleaning pad 14. The end portion of the handle 11, defining the cylindrical bore 17 is narrower, forming a neck 18 in order to enable the cap 20 to be fitted on the neck 18 when the device 10 is being used. The handle 11 may be made of rigid material like plastic, metal or the like.
The support body 12 has a conical shape and its base portion is shaped like a bell as seen in FIG. 1, FIG. 2 and in FIG. 3. The base of the support body 12 has a concave configuration as seen in FIG.
2 and FIG. 3. The cleaning pad 19 is attached to the base of the support body 12 as shown in FIG. 2 and in FIG. 3. The means for attaching the pad 14 to the support body 12 is a pliable glue 13 as seen in FIG. 2. The~support body 12 is made of resilent material like urethane, rubber or other suitable material. The cap 20 comprises a hollow cylindrical body 21, biaslng means 22, a cup o ~ ~
shaped body 23 and aggregated cleaning composition 24 as seen in FIG.3 and in FIG. 4. One end of the hollow cylindrical body 21 is closed defining the bottom of the cap 20 as shown in FIG. 3 and in FIG. 4. The biasing means 22 may have a cylindrical shape and is placed on the bottom of the hollow cylindrical body 21. It is made of a very soft resilent material like poliurethane foam or similar material, and it is permanently attached to the bottom of the hollow cylindrical body 21 with adhesive means. The cup shaped body 23 is placed inside the hollow cylindrical body 21 on top of the biasing means 22, and it is attached to the biasing means 22 with adhesive means in such a position that the cavity 26 faces the open end of the hollow cylindrical body 21 as seen in FIG. 3. The hollow cylindrical body 21 and the cup shaped body 23 is made of rigid material like plastic, metal or other suitable material. The outer diameter of the cup shaped body 23 is slightly smaller than the inner diameter of the hollow cylindrical body 21 as seen in FIG. 3, allowing the cup shaped body 23 to slide axially inside the cap 20.
The aggregated cleaning composition 29 is placed inside the cup shaped body 23 as seen in FIG. 3. The outer surface 25 of the aggregated cleaning composition 24 ls convex shaped as seen in FIG.
4,480,352 dated Nov. 6, 1984, granted to Eggett for ~Apparatus For Cleaning Lenses, Mirrors And The Like" and United States Patent No.
~,546,517 dated Oct. 15, 1985, granted to Caniglia for ~Wiping Device. n The means, for merely wiping off optical surfaces, have the disadvantage of not quickly or effectively removing greasy residues from the optical surface and furthermore are susceptible to spreading oily spots ~over the cleaned surface causing flare and diffusion of the image.
In some cases it may be helpful to ligtly breath on the 2 ~
.: ` ,.
:
surface causing fine condensation of moisture on it and than wipe it off, but yet not satisfactory enough.
Of generally known methodes, apparently the most effective are the ones that use various solvants in addition to using the wiping means. When using these methodes, a solvant is first applied on the surface being cleaned in order to disolve the residues, and then it is absorbed by wiping means, during cleaning process.
These methodes, although more effective than the other ones are more inconvenient and cumbersome since one has to handle several articles simultaneously, like: wiping means, an article to be cleaned and a bottle containing solvant. The bottle has to be opened, the solvant has to be applied and wiped dry with wiping means, than the bottle has to be tightly closed and the wiping means is usually discarded. Also, the addition of solvants to the cleaning procedure poses a risk of spillage spreading to unwanted places.
In the light of the above it seems that the consumer has to choose between more convenient but less effective products like -brush, blower or merely wiping means and less convenient but more effective ones like combinations of solvants and wiping means.
In the liqht of recent environment protection awarness it has to be stressed that most of the means used for cleaning optical surfaces, whlch are currently available on the market, are usually discarded after the use and contribute to environment pollutlon.
Considering the field of methodes and devices for cleaning optical surfaces, it is desirable to have a product that will incorporate 2~ ~00~ -conveniency, effectiveness, and efficiency and at the same time will be environmentally safe. It is essential, also, that it will be safe for the user.
Our invention embodies products and a methode that better meet these desirable features.
The present invention provides a device which is held by one hand and driven in a quick wiping motion, conveniently and more effectively cleaning an optical surface. Further, it provides a special cleaning composition to be comprised and used with the device. Along with the above, the use of the invention does not leave waste materials to be discarded after the use and in this aspect contributes to cleaner environment.
According to one aspect of the invention there is provided a cleaning composition for cleaning optical surfaces, comprising soot, for the use with the device of the invention. In the same aspect, it may further comprise hemihydrate of calcium sulphate to improve cleaning capability of the composition. The ratio by weight of soot to calcium sulphate may be 5~ to 95~ respectively. Still in the same aspect, the composition of soot and calcium sulphate mixed together may be aggregated by adding water to it and allowing it to set.
According to another aspect of the invention there is provided a device comprisinq a cleaning pad made of chamois, soft cloth or the like, ~n elongated support body, and an adhesive means. At least one end of the support body has a surface, and the 2~ ~00~
cleaning pad is attached to this surface with adhesive means. The support body may be made of rigid ~aterial and may have predetermined concave configuration of the surface. In the same aspect it may further comprise a handle for holding the support body and a cap for protecting the cleaning pad and the support body. In yet the same aspect the cleaning composition may be applied onto the cleaning pad.
According to an additional aspect of the invention there is provided a device comprising a cleaning pad made of chamois, soft cloth or the like, an elongated support body made of resielent material, and an adhesive means. At least one end of the support body has a surface. The surface may have a concave configuration.
The pad is attached to the surface with adhesive means. The adhesive means may be a pliable glue. In the same aspect the support body may be cone shaped. The end portion of the support body, adjacent to the surface, may be shaped like a bell. In still the same aspect, the device may further comprise a handle for holding the support body.
The handle may be made of rigid material and may have a cylindrical shape. The handle may have a conical bore along its axis in one of its ends for attaching the support body to the handle. The handle may have a cylindrical bore along its axis in the end oposing the end having the conical bore. The wall defining the cylindrical bore may have a slot extending lengthwise. The handle may have a brush placed inside the cylindrlcal bore. The brush may have a member attached to it. The 2 ~ 0 ~
member may protrude through the slot and may be used to slide the brush out of the handle or into the handle. Further in the same aspect of the invention, the device further comprises a cap for protecting the cleaning pad and the support body. The cap may be a hollow cylindrical body. One end of the cylindrical body is open and the other one is closed, being the bottom of the cap. The aggregated cleaning composition may be placed on the bottom of the cap.
Accordinq to a further aspect, the cap may be a hollow cylindrical body. One end of the cylindrical body is open and the other one is closed, being the bottom of the cap. The cap may further comprise a biasing means placed on the bottom of the cap.
The biasing means may be a soft resilent material like urethane foam. The cap may also comprise a cup shaped body made of rigid material. It may be placed on the biasing means. The cavity of the cup shaped body is facing the open end of the cap. The cup shaped body contains the aggregated cleaning composition. Adhesive means may be used to attach the biasing means to the bottom of the cap and the cup shaped body to the biasing means.
The invention, as exemplified by preferred embodiment, is described with reference to the drawings in which:
FIGURE 1 is a perspective view of an embodiment of a device of the invention;
FIGURE 2 is a sectional view of the suuport body and the cleaning pad of the device of the invention shown in FIGURE 1.
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FIGURE 3 is a sectional view of the device of the invention shown in FIGURE l;
FIGURE 4 is an exploded, sectional view of the cap of the device of the invention shown in FIGURE l and in FIGURE 3;
and FIGURE 5 is the exploded, top view of the brush of the invention shown in FIGURE 1 and in FIGURE 3.
In the reference to the drawings, the preferred embodiment of the invention illustrated, a device 10 comprises a handle 11, support body 12, a cleaning pad 19, a cap 20, and a brush 30. The handle 11 has cylindrical shape. One end of the handle 11 has a conical bore along its axis and is forming a receptacle holding the support body 12 which is attached to the handle 11 by inserting the vertex portion of the support body 12 into the conical bore of the handle 11 as it is shown in FIG.3. The opposite end of the handle 11 has a cylindrical bore 17 extending axially and forming a tubular duct for the brush 30 as seen in FIG. 3. The wall 19 defining the cylindrical bore 17 has a slot 16 to allow the member 33, attached to the base portlon 31, to protrude outside the wall 19 and to move along the slot 16, driving the brush 30 in and out of the handle 11 as shown In FIG. 3 and in FIG. 1. The end portlon of the handle 11, defininq the conical bore, is 2 ~
externally narrower forming a neck 15 in order to allow the engagement of the handle 11 with the cap 20. The length and diameter of the neck lS and the length and diameter of the engaging, interior portion of the cap 20 are such that a reasonable amount of force is required to mount the cap on the neck 15 of the handle 11 in order to prevent the cap from accidently sliding off the neck 15. The edge 50, limiting the neck 15, and the edge 51 of the open end of the cap are definite as seen in FIG. 3 and in FIG. 4. This being done so that the cap 20 may be stopped at exactly desired position enabllng the necessary, predetermined contact between the aggregated cleaning composition 24 and the cleaning pad 14. The end portion of the handle 11, defining the cylindrical bore 17 is narrower, forming a neck 18 in order to enable the cap 20 to be fitted on the neck 18 when the device 10 is being used. The handle 11 may be made of rigid material like plastic, metal or the like.
The support body 12 has a conical shape and its base portion is shaped like a bell as seen in FIG. 1, FIG. 2 and in FIG. 3. The base of the support body 12 has a concave configuration as seen in FIG.
2 and FIG. 3. The cleaning pad 19 is attached to the base of the support body 12 as shown in FIG. 2 and in FIG. 3. The means for attaching the pad 14 to the support body 12 is a pliable glue 13 as seen in FIG. 2. The~support body 12 is made of resilent material like urethane, rubber or other suitable material. The cap 20 comprises a hollow cylindrical body 21, biaslng means 22, a cup o ~ ~
shaped body 23 and aggregated cleaning composition 24 as seen in FIG.3 and in FIG. 4. One end of the hollow cylindrical body 21 is closed defining the bottom of the cap 20 as shown in FIG. 3 and in FIG. 4. The biasing means 22 may have a cylindrical shape and is placed on the bottom of the hollow cylindrical body 21. It is made of a very soft resilent material like poliurethane foam or similar material, and it is permanently attached to the bottom of the hollow cylindrical body 21 with adhesive means. The cup shaped body 23 is placed inside the hollow cylindrical body 21 on top of the biasing means 22, and it is attached to the biasing means 22 with adhesive means in such a position that the cavity 26 faces the open end of the hollow cylindrical body 21 as seen in FIG. 3. The hollow cylindrical body 21 and the cup shaped body 23 is made of rigid material like plastic, metal or other suitable material. The outer diameter of the cup shaped body 23 is slightly smaller than the inner diameter of the hollow cylindrical body 21 as seen in FIG. 3, allowing the cup shaped body 23 to slide axially inside the cap 20.
The aggregated cleaning composition 29 is placed inside the cup shaped body 23 as seen in FIG. 3. The outer surface 25 of the aggregated cleaning composition 24 ls convex shaped as seen in FIG.
3 and 9, in order to face the concave surface of the support body 12 as shown in FIG. 3. When the cap 20 is placed on the neck 15, the aggregated cleaning composition 29 is contigueous to the cleaning : , "
2 ~
pad 14 as seen in FIG. 3. The biasing means 22 exerts a slight pressure on the cup shaped body 23 containing aggregated cleaning composition 24. The contiguous contact between the aggregated cleaning composition 24 and the cleaning pad 14 enables a small amount of the cleaning composition 24 to be transfered onto the cleaning pad 14. The brush 30 comprises a base portion 31, bristle 32 and a member 33. The base portion 31 of the brush 30 is cylindrical. It has a bore which is vertical to the axis of the brush 30 and is located in the proximity of the centre of the base portion 31 as it is shown in FIG 3. The bore extends to such a depth that the member 33 may be inserted and securly attached to the base portion 31 as seen in FIG. 3. Adhesive means may be used to ensure a permanent attachement. The bristle 32 is permanently fixed to the base portion 31 of the brush 30. Also, the base portion 31 has at least two grooves 34 positioned symetrically as it is shown in FIG. 5. Leaf springs 35 are placed in the grooves 34 in order to increase the friction between the inner surface of the wall 19 defining cylindrical bore 17 and the base portion 31 of the brush 30. The widths of the grooves 34 are slightly longer than the leaf springs 35 to allow them to spread lengthwise when compressed. The springs 35 prevent the brush 30 from uncontrolled sliding movement lnside the cylindrical bore 17.
The device 10 may be carried by the user when the cap 20 is 2 ~
placed on the neck 15 of the handle 11. In this position the cap 20 coveres the support body 12 and the cleaning pad 14 in order to protect them from getting damaged and from getting dirty. This position also enables the cleaning pad 14 to be contiguous with the aggregated cleaning composition 24, in order to enable small amount of the cleaning composition to be transfered onto the cleaning pad 14 each time the cap 20 is put on the neck 15. The brush 30 may be positioned inside the cylindrical bore 1~ in order to protect it and keep it clean. When an optical surface is to be cleaned the user may slide the brush 30 out of the handle 11 using the member 33, brush away dust and bigger particles such as sand, and then slide the brush 30 back into the handle 11. Next, the user takes the cap 20 off the handle 11 uncovering the support body 12 and the cleaning pad 14. The cap 20 may be placed on the neck 18 of the handle 11 for convenience. Further, the user grips the device 10 as if gripping a pen, places the cleaning pad 14 on an optical surface to be cleaned and applies circular motion to the device 10, for wiping this optical surface. Using the device in this manner will clean fingerprint marks, water or greasy residues etc., off the optical surface. Then, the cap 20 is placed back on the neck 15 of the handle 11.
The support body of the device is capable to adapt its shape to the shape of a convex or flat surface being cleaned. This self-- 11 - ' , adaptation capability is achieved by using resilent material to make the support body o~, and by shaping its end portion like a bell, wherein the base of this bell shaped support body has a concave configuration. When the base of the support body is placed on a convex nr flat surface, the edge of the base may lift up, matching the surface of the support body to the suface being cleaned. Thus, the cleaning pad attached to the base of the support body covers nearly the same area when applied on different convex or flat surfaces.
After a prolonged use, the cleaning capability of the cleaning composition may decrease and the user may restore the effectiveness of cleaning by rotating the cap 20, when placed on the neck 15, against the handle 11 causing that more cleaning composition is transfered onto the cleaning pad 14.
The cleaning composition 24 comprises essentially soot, that we believe, has a new use of being a suitable material for cleanig optical surfaces. Further, we believe that soot is actively participating in cleaning greasy residues through the process of adsorbtion. In practice such residues may be left by fingerprints, rainwater, or air pollution. The cleaning composition may further comprise hemihydrate of calcium sulphate 2CaSO~ H20. The addition of hemihydrate of calcium sulphate to the cleaning composition enables the mlxture of powdered ingredients to be aggregated into a ::
2 ~ 0 ~
lump. In this form, the aggregated cleaning composition can be located in a specific place inside the cap. Also, the lump form of the cleaning composition enables the cleaning pad to retain a predetermined shape and to collect only a small portion of the cleaning composition from the surface of the lump, each time the cleaning pad gets in touch with the aggregated cleaning composition.
The addition of hemihydrate of calclum sulphate to the cleaning compositlon also improves its cleaning capabilities. The aggregated form of the cleaning composition is achieved by adding water to a mixture of soot and hemihydrate of calcium sulphate, mixing it, and allowing it to set.
The preffered ratio by weight of soot to hemihydrate of calcium sulphate in the cleaning composition is about 5~ to 95 respectively. This amount of soot in the composition is sufficient to perform the cleaning by adsorbtion. The amount of 95~ of hemihydrate of calcium sulphate in the cleaning composition is needed in order to maintain a solid lump of the cleaning composition, which will retain its predetermined shape and will not fall apart.
Both ingredients of the cleaning composition are very soft materials and they have value between 1 and 2 according to the Mohs scale of hardness. Essentially, these ingredients will not scratch any harder material that has higher than 2 value of hardness on the Mohs scale. To the best of our knowledge all optical elements and optical coatings have higher than 2 value of hardness. For example .. . . . .. : . . . . : . ; . . . . : . ,.. : .: , : , . . . .: :.` . : ..
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one of commonly used antireflection coatings consists of magnesium fluoride MgFz which has value of hardness on the Mohs scalP between 5 and 6.
In addition, both substances used in the cleaning composition are non-reactive and will not chemically damage the surface being cleaned. Along with that, these substances are non-toxic and non-corrosive and are safe for the user.
2 ~
pad 14 as seen in FIG. 3. The biasing means 22 exerts a slight pressure on the cup shaped body 23 containing aggregated cleaning composition 24. The contiguous contact between the aggregated cleaning composition 24 and the cleaning pad 14 enables a small amount of the cleaning composition 24 to be transfered onto the cleaning pad 14. The brush 30 comprises a base portion 31, bristle 32 and a member 33. The base portion 31 of the brush 30 is cylindrical. It has a bore which is vertical to the axis of the brush 30 and is located in the proximity of the centre of the base portion 31 as it is shown in FIG 3. The bore extends to such a depth that the member 33 may be inserted and securly attached to the base portion 31 as seen in FIG. 3. Adhesive means may be used to ensure a permanent attachement. The bristle 32 is permanently fixed to the base portion 31 of the brush 30. Also, the base portion 31 has at least two grooves 34 positioned symetrically as it is shown in FIG. 5. Leaf springs 35 are placed in the grooves 34 in order to increase the friction between the inner surface of the wall 19 defining cylindrical bore 17 and the base portion 31 of the brush 30. The widths of the grooves 34 are slightly longer than the leaf springs 35 to allow them to spread lengthwise when compressed. The springs 35 prevent the brush 30 from uncontrolled sliding movement lnside the cylindrical bore 17.
The device 10 may be carried by the user when the cap 20 is 2 ~
placed on the neck 15 of the handle 11. In this position the cap 20 coveres the support body 12 and the cleaning pad 14 in order to protect them from getting damaged and from getting dirty. This position also enables the cleaning pad 14 to be contiguous with the aggregated cleaning composition 24, in order to enable small amount of the cleaning composition to be transfered onto the cleaning pad 14 each time the cap 20 is put on the neck 15. The brush 30 may be positioned inside the cylindrical bore 1~ in order to protect it and keep it clean. When an optical surface is to be cleaned the user may slide the brush 30 out of the handle 11 using the member 33, brush away dust and bigger particles such as sand, and then slide the brush 30 back into the handle 11. Next, the user takes the cap 20 off the handle 11 uncovering the support body 12 and the cleaning pad 14. The cap 20 may be placed on the neck 18 of the handle 11 for convenience. Further, the user grips the device 10 as if gripping a pen, places the cleaning pad 14 on an optical surface to be cleaned and applies circular motion to the device 10, for wiping this optical surface. Using the device in this manner will clean fingerprint marks, water or greasy residues etc., off the optical surface. Then, the cap 20 is placed back on the neck 15 of the handle 11.
The support body of the device is capable to adapt its shape to the shape of a convex or flat surface being cleaned. This self-- 11 - ' , adaptation capability is achieved by using resilent material to make the support body o~, and by shaping its end portion like a bell, wherein the base of this bell shaped support body has a concave configuration. When the base of the support body is placed on a convex nr flat surface, the edge of the base may lift up, matching the surface of the support body to the suface being cleaned. Thus, the cleaning pad attached to the base of the support body covers nearly the same area when applied on different convex or flat surfaces.
After a prolonged use, the cleaning capability of the cleaning composition may decrease and the user may restore the effectiveness of cleaning by rotating the cap 20, when placed on the neck 15, against the handle 11 causing that more cleaning composition is transfered onto the cleaning pad 14.
The cleaning composition 24 comprises essentially soot, that we believe, has a new use of being a suitable material for cleanig optical surfaces. Further, we believe that soot is actively participating in cleaning greasy residues through the process of adsorbtion. In practice such residues may be left by fingerprints, rainwater, or air pollution. The cleaning composition may further comprise hemihydrate of calcium sulphate 2CaSO~ H20. The addition of hemihydrate of calcium sulphate to the cleaning composition enables the mlxture of powdered ingredients to be aggregated into a ::
2 ~ 0 ~
lump. In this form, the aggregated cleaning composition can be located in a specific place inside the cap. Also, the lump form of the cleaning composition enables the cleaning pad to retain a predetermined shape and to collect only a small portion of the cleaning composition from the surface of the lump, each time the cleaning pad gets in touch with the aggregated cleaning composition.
The addition of hemihydrate of calclum sulphate to the cleaning compositlon also improves its cleaning capabilities. The aggregated form of the cleaning composition is achieved by adding water to a mixture of soot and hemihydrate of calcium sulphate, mixing it, and allowing it to set.
The preffered ratio by weight of soot to hemihydrate of calcium sulphate in the cleaning composition is about 5~ to 95 respectively. This amount of soot in the composition is sufficient to perform the cleaning by adsorbtion. The amount of 95~ of hemihydrate of calcium sulphate in the cleaning composition is needed in order to maintain a solid lump of the cleaning composition, which will retain its predetermined shape and will not fall apart.
Both ingredients of the cleaning composition are very soft materials and they have value between 1 and 2 according to the Mohs scale of hardness. Essentially, these ingredients will not scratch any harder material that has higher than 2 value of hardness on the Mohs scale. To the best of our knowledge all optical elements and optical coatings have higher than 2 value of hardness. For example .. . . . .. : . . . . : . ; . . . . : . ,.. : .: , : , . . . .: :.` . : ..
2 0 ~
one of commonly used antireflection coatings consists of magnesium fluoride MgFz which has value of hardness on the Mohs scalP between 5 and 6.
In addition, both substances used in the cleaning composition are non-reactive and will not chemically damage the surface being cleaned. Along with that, these substances are non-toxic and non-corrosive and are safe for the user.
Claims (27)
1. A device for cleaning lenses and other optical surfaces comprising a support body, a cleaning pad made of chamois, soft cloth or the like, and adhesive means for attaching said cleaning pad to said support body, wherein said support body is elongated, at least one end of said support body has a surface and said cleaning pad is attached to said surface of said support body with said adhesive means.
2. A device as claimed in claim 1, wherein said support body is made of rigid material and said surface has a concave configuration to face a given convex optical surface being cleaned.
3. A device as claimed in claim 1, wherein said support body is made of a resilent material, said surface has a concave configuration, and said adhesive means is a pliable glue.
4. A device as claimed in claim 3, wherein the end portion of said support body! adjacent to said surface having said cleaning pad attached, is shaped like a bell.
5. A device as claimed in claim 1 or 2 further comprising a handle for holding said support body, and a cap for protecting said support body and said cleaning pad and for providing a cleaning material to said cleaning pad.
6. A device as claimed in claim 3 or 4 further comprising a handle for holding said support body, and a cap for protecting said support body and said cleaning pad and for providing a cleaning material to said cleaning pad.
7. A cleaning composition for actively removing greasy residues from optical surfaces comprising soot.
8. A cleaning composition as claimed in claim 7 further comprising hemihydrate of calcium sulphate.
9. A cleaning composition as claimed in claim 8, wherein said soot and said hemihydrate of calcium sulphate are mixed together in the ratio of about 5% of said soot to about 95% of said hemihydrate of calcium sulphate, and aggregated by addind water to said cleaning composition, mixing it, and allowing it to set.
10. A device as claimed in claim 1 or 2, wherein said cleaning composition as claimed in claim 7 is applied on said cleaning pad.
11. A device as claimed in claim 1 or 2, wherein said cleaning composition as claimed in claim 8 is applied on said cleaning pad.
12. A device as claimed in claim 3 or 4, wherein said cleaning composition as claimed in claim 7 is applied on said cleaning pad.
13. A device as claimed in claim 3 or 4, wherein said cleaning composition as claimed in claim 8 is applied on said cleaning pad.
14. A device as claimed in claim 5 or 6, wherein said cleaning composition as claimed in claim 7 is applied on said cleaning pad.
15. A device as claimed in claim 5 or 6, wherein said cleaning composition as claimed in claim 8 is applied on said cleaning pad.
16. A device as claimed in claim 1, wherein said support body is cone-shaped and has a concave configuration of its base, the portion of said support body, adjacent to the base, is shaped like a bell.
17. A device as claimed in claim 16, wherein said support body is made of a resilent material and said adhesive means is a pliable glue.
18. A device as claimed in claim 17 further comprising a handle for holding said support body, and a cap for protecting said support body and said cleaning pad.
19. A device as claimed in claim 18, wherein said handle is a cylindrical body having a conical bore along its axis in one of its ends for attaching said support body to said handle, and is made of rigid material.
20. A device as claimed In claim 19, wherein said handle has a cylindrical bore along its axis in the end opposing the end with said conical bore, and a slot located along the wall which defines said cylindrical bore.
21. A device as claimed in claim 20, wherein said handle further comprises a retractable brush placed inside said cylindrical bore of said handle.
22. A device as claimed in claim 21, wherein said brush has a member attached to it and protruding through said slot for sliding said brush in and out of said handle.
23. A device as claimed in claim 22, wherein said cleaning composition as claimed in claim 7 is applied on said cleaning pad.
24. A device as claimed in claim 22, wherein said cleaning composition as claimed in claim 8 is applied on said cleaning pad.
25. A device as claimed in claim 22, wherein said cap comprises a hollow cylindrical body having one end open and the other end, being its bottom, closed.
26. A device as claimed in claim 25, wherein said cleaning compositin as claimed in claim 9 is placed inside on the bottom of said hollow cylindrical body.
27. A device as claimed in claim 22, wherein said cap comprises a hollow cylindrical body having one end open and the other end being its bottom closed, said cleaning composition as claimed in claim 9, a cup shaped body to contain said cleaning composition, biasing means for resilently supporting said cup shaped body with said cleaning composition, and adhesive means to attach said cup shaped body to said biasing means and said biasing means to said cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2014000 CA2014000A1 (en) | 1990-04-06 | 1990-04-06 | Device and composition for cleaning optical surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2014000 CA2014000A1 (en) | 1990-04-06 | 1990-04-06 | Device and composition for cleaning optical surfaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2014000A1 true CA2014000A1 (en) | 1991-10-06 |
Family
ID=4144695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2014000 Abandoned CA2014000A1 (en) | 1990-04-06 | 1990-04-06 | Device and composition for cleaning optical surfaces |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2014000A1 (en) |
-
1990
- 1990-04-06 CA CA 2014000 patent/CA2014000A1/en not_active Abandoned
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| Date | Code | Title | Description |
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| FZDE | Dead |