WO1998058290A1 - Adaptateur pour jumelles et son procede de fabrication - Google Patents

Adaptateur pour jumelles et son procede de fabrication Download PDF

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Publication number
WO1998058290A1
WO1998058290A1 PCT/JP1998/002624 JP9802624W WO9858290A1 WO 1998058290 A1 WO1998058290 A1 WO 1998058290A1 JP 9802624 W JP9802624 W JP 9802624W WO 9858290 A1 WO9858290 A1 WO 9858290A1
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WO
WIPO (PCT)
Prior art keywords
glass
adapter
film
filter
binoculars
Prior art date
Application number
PCT/JP1998/002624
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English (en)
Japanese (ja)
Inventor
Shigeo Okamoto
Original Assignee
San-Yu Sen-I Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by San-Yu Sen-I Co., Ltd. filed Critical San-Yu Sen-I Co., Ltd.
Publication of WO1998058290A1 publication Critical patent/WO1998058290A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/16—Housings; Caps; Mountings; Supports, e.g. with counterweight
    • G02B23/18—Housings; Caps; Mountings; Supports, e.g. with counterweight for binocular arrangements

Definitions

  • the present invention relates to an adapter for binoculars mounted on an objective lens side of the binoculars, and more particularly to an adapter for binoculars having a multilayer glass, a polarizing filter, and a heat ray absorbing glass suitable for the binoculars, and a manufacturing method thereof.
  • the binoculars have two telescopes whose axes are arranged in parallel and can be viewed with both eyes, so that it is easy to check the perspective. Conversely, it was difficult to confirm this with a telescope.
  • the structure generally consists of an objective lens using a convex lens, an eyepiece, and a right-angle prism for erecting an image between them, and a complex lens with sufficient aberration correction has been used for the lens.
  • Binoculars can be made brighter by increasing the so-called pupil diameter where the effective diameter of the objective lens is larger than the magnification.
  • optical filters have been used in photography with cameras.
  • Optical filters can absorb light uniformly to weaken it as a whole, or absorb some wavelengths of light to change the spectral distribution of the light, or even selectively, to better match the characteristics of the photographic film.
  • a color temperature adjusting filter is also known.
  • laser light is used in many fields such as military, medical, and blinter. In these wavelength ranges, safety for the eyes is called for. In particular, the distance to the target, such as for military use, and the laser wavelength in medical scalpels cannot be identified by human eyes. In addition, if they enter the eyes directly, there is a high risk of blindness due to damage to the retina. Therefore, protective glasses for protecting the eyes were needed.
  • the present invention relates to an adapter for binoculars, which solves the above-mentioned drawbacks and is easily attached to and detached from binoculars, and which is attached to the objective lens side of the binoculars.
  • the present invention provides an adapter which can be attached to an outer peripheral surface of an objective lens barrel of binoculars, the adapter includes at least a plurality of flexible materials for holding a lens barrel on the inner surface of the peripheral surface, and the outer periphery of the adapter.
  • the flexible material is bent by a plurality of tightening screws to be mounted around the lens barrel, the yellow glass and the polarizing filter, which are rotatably mounted on the adapter, are laminated, and the yellow glass is further mounted.
  • At least one of a heat ray absorbing glass and a soda lime glass and provided by a binocular adapter to which a polarized and ultraviolet cut filter in which the selected glass is laminated and adhered to the polarizing filter side is detachably attached.
  • a binocular adapter to which a polarized and ultraviolet cut filter in which the selected glass is laminated and adhered to the polarizing filter side is detachably attached.
  • the flexible material for holding the lens barrel is effectively provided by an adapter for binoculars, which is a fastener.
  • the film material is a polarizing film obtained by stretching polyvinyl alcohol, dyeing with iodine, and drying, the film is effectively provided by the adapter for binoculars.
  • the selected glass is selected from heat absorbing glass and soda lime glass, and the polarizing film is sandwiched between the selected glass and the yellow glass, and both sides of the film are cured by ultraviolet light.
  • a mold adhesive is applied and cured by irradiating ultraviolet rays from the selected glass side.
  • the selected glass is yellow glass, and the polarizing film is sandwiched between the selected glass and the yellow glass, and an adhesive is applied to both sides of the film and cured.
  • the selected glass is selected from heat absorbing glass and yellow glass, and the selected glass is detachably mounted as a polarized, ultraviolet and laser light cut filter having an IR coating. Both are provided effectively.
  • an IR coat is applied to the adapter, which is rotatably mounted on the adapter, and IR coating is applied to a glass selected from the group consisting of a yellow glass and one of a yellow glass and a heat ray absorbing glass.
  • a polarizing filter consisting of a polarizing film dyed and dried with iodine after stretching the borobul alcohol is laminated and adhered.Polarization that can block at least 99% or more of a laser beam of 1064 nm. It is also provided as an adapter for binoculars which is detachably attached as an ultraviolet and laser light cut filter.
  • the film material is stretched, and a means for forming a polarizing filter from a polarizing film that has been stained is provided.
  • the filter is sandwiched between yellow glass and the selected glass.
  • the film may further include Means for applying an IR coat to the adhesive side surface of the stained glass, means for stretching the film material, and means for forming a polarizing filter from the dyed polarizing film, and sandwiching the filter between the yellow glass and the selected glass.
  • the film material is formed by adding a means for stretching polyvinyl alcohol, and then dyeing and drying with iodine.
  • a means for applying an IR coat to an inner surface of the selected glass on the bonding side a means for stretching a film material, and a method for forming a polarizing filter from a dyed polarizing film The filter is sandwiched between yellow glass and the selected glass, and at least 99% or more of a laser beam of 1064 nm formed by means of applying and curing an adhesive on both sides of the film can be blocked.
  • the present invention can be effectively provided as a method for manufacturing a binocular adapter which is detachably attached as a cut filter of polarized light, ultraviolet light and laser light.
  • FIG. 1 is a plan view showing an adapter body of a binocular adapter of the present invention
  • FIG. 2 is a side view showing a partial cross section of the binocular adapter body.
  • FIG. 3 is a partial sectional view showing a partial end surface of the adapter for binoculars of the present invention.
  • FIG. 4 is a transmittance curve of the filter of one optical filter
  • FIG. 5 is a transmittance curve of another embodiment of the optical filter
  • FIG. 6 is a transmittance curve of another embodiment of the optical filter.
  • FIG. 7 is a diagram illustrating a transmittance curve according to another embodiment
  • FIG. 8 is a diagram illustrating a transmittance curve of a filter according to another embodiment.
  • FIG. 1 shows an adapter for binoculars according to the present invention.
  • FIG. 2 is a plan view showing an adapter main body of the camera, and FIG. 2 is a side view in which a part of the adapter main body for binoculars is omitted.
  • the adapter body 1 is made of a cylindrical body made of aluminum material that has been treated with alumina.
  • the surface is finished black and matte, and the size is slightly larger depending on the size of the binoculars itself.
  • an adapter with an outer shape of 53 to 78 thighs, a thickness of about 3 mm, and a height of about 16 countries is appropriate.
  • FIG. 3 is a partial sectional view showing a partial end face of the adapter for binoculars of the present invention. As a whole, it is an explanatory view showing a state in which a cylindrical filter main body is cut into two in a plane portion, and is shown in a state where a central portion in the drawing is omitted.
  • the metal part of the optical filter 11 is finished using the same material as the adapter.
  • the holding bracket 12 and the rotating metal frame 13 are connected by a greased rear spring washer 14 so that they can rotate freely.
  • Table 1 shows various glass materials showing the structure of the filter body and the coating method applied to them.
  • Example 1 will be described with reference to Table 1.
  • Group A1 in Table 1 a polarizing film was interposed between yellow glass and soda lime glass and bonded.
  • group A 0 a comparative example invented by the inventor of the present application and published (Japanese Patent Application Laid-Open No. 10-62695).
  • Group A 1 is a comparative example and the yellow cut glass is used instead of UV cut glass.
  • C Table 1 is an example in which a first glass
  • the filter body 11 is fixed to the inner periphery of the rotating metal frame 13 by a rear spring washer 15 so as not to come off. It is preferable that the rear spring washers 14 and 15 have a slightly thinner plate thickness.
  • the former should be made slippery, and the latter should be selected so that the filter body 11 does not come off the rotating frame 13, the overall length, and the cross-sectional shape.
  • One of the two layers of the filter body 11 was yellow glass 17 and the other was soda lime glass (soda glass) 16 on the objective lens side of the binoculars.
  • an ultraviolet-curing adhesive was applied to both sides of the polarizing film 18 composed of a polyvinyl alcohol (PVA) film as the film material, and the film was cured by irradiating ultraviolet rays from the soda lime glass side.
  • the filter body had a total thickness of 3 mm.
  • PVA is oriented in an arbitrary direction, but when stretched in one direction, it becomes anisotropic in that direction.
  • X-ray confirmation shows birefringence Was done.
  • a dye When a dye is applied to this, it becomes a polarizing filter.
  • Suitable dyes include dichroic dyes such as methyl benzene, crystal violet, rosolic acid, and picric acid.
  • iodine As an example, after stretching, it was dyed with iodine and dried to obtain a polarizing film.
  • the thickness of the polarizing film is suitably from 10 to 30 // m, and a thickness of 10 / m was used.
  • the use of a model Y49.5 manufactured by Osaka Spectacle Glass Co., Ltd. is appropriate.
  • the characteristic is that it has the same function in the wavelength range of UV cut.
  • the reason why yellow glass was used was to pay particular attention to the point of visibility. As a result, favorable characteristics were obtained.
  • the human retina has two peaks of visibility at around 550 nm and around 550 nm. Therefore, paying attention to this point, yellow optics (Y49.5 where Y indicates yellow and 49.5 indicates the transmission limit wavelength, this display is shown by the upper two digits numerical value nm in transmission limit wavelength) .) By cutting the wavelength of around 490 nm or less with a filter, the eye identification function can be maximized.
  • soda-lime glass can be produced at low cost because general-purpose glass such as window glass can be used.
  • the PVA film is sandwiched as a polarizing film (PL film), and the use of an ultraviolet-curable adhesive is possible.
  • the adapter body shown in Fig. 1 is divided into three parts in the circumferential direction and has hexagon socket head bolts 2 to 4 at right angles to the circumference, and fasteners (Velcro SA fasteners) at three locations on the inner surface of the adapter at the bolt positions. 5 to 7 were attached with an adhesive.
  • the snare has a loop shape and a protruding side hooked to it, but the loop shape was selected because of its elasticity.
  • the appropriate size is about 10 thighs, 25 widths, and about 2 mm thick.
  • the bolt hole position 9 was located near the longitudinal end of the back of the fastener. The bolt tip presses the fastener and holds the binocular lens barrel. The end is because the fastener cannot be peeled off due to the protrusion of the bolt.
  • the adapter body 8 is provided with a female screw for fitting an external thread on the outer peripheral surface of the filter 1, and 9 is an insertion point of the hexagon socket head bolt 2.
  • the tapered portion 10 is cut out in a tapered shape for ease of operation during mounting and rotation of the filter.
  • FIG. 3 shows the filter 11, in which the adapter 1 is screwed and mounted thereon to form a partial sectional view showing a partial end surface of the binocular adapter of the present invention. Attachment is performed by screwing and rotating between the female thread 8 of the adapter and the male thread 19 on one side of the finoleta.
  • the holding bracket 12 of the filter 11 is fitted to the adapter 1 and integrally fixed to the lens barrel of the binoculars.
  • the rotating metal frame 13 is rotatable with respect to the holding bracket 12, it is possible to rotate the binoculars while looking at the binoculars with a fingertip.
  • the yellow glass and the polarizing filter (PL filter) themselves are also fixed to the rotating metal frame, so that they rotate simultaneously. As a result, the contrast of the visual field has been dramatically improved.
  • (reflection light can be cut off by the I optical filter 1 and ultraviolet light can be cut off by the yellow glass.
  • the adapter 1 can be made of resin.
  • FIG. 4 to FIG. 8 show transmittance curves of the optical filters used in the embodiments used in the present invention.
  • FIG. 4 is a transmittance curve for Comparative Example (AO) and Example 1 (A 1).
  • A1 is completely forced from around 380 nm to around 450 nm.
  • Example 2 In addition, a transmittance of 10% or less was achieved even at around 490 nm. On the other hand, A 0 has a limit to cut to the ultraviolet region. Since the polarization filter has an angle dependence, this effect was considered. That is, the transmitted light is generally maximum when the plane of oscillation of the transmitted light and the principal axis of the polarization plane are parallel to each other and the so-called light transmission is not hindered. These are the data of the respective examples when measured under these conditions.
  • Example 2 Example 2
  • Example 1 An adapter using the same was finished in the same manner as in Example 1. In particular, the effect was further enhanced as compared with Example 1 in the aforementioned violet to blue (400 to 490 nm) wavelength region.
  • the method for bonding the two yellow glasses and the polarizing filter was different from the method of Example 1, for example, by using a two-part epoxy adhesive. This is because the purple glass is cut by yellow glass.
  • FIG. 5 is a transmittance curve for Example 2 (A 2), in which the rise of transmittance became sharper than that of A 1. In addition, the transmittance at 490 nm or less is 0%, and clearer contrast can be expected.
  • Example 3
  • Example 1 the contact between the yellow glass and the heat ray absorbing glass with the polarizing filter The method of Example 1 was used as the method of wearing.
  • heat ray absorbing glass for example, OHA Glass Co., Ltd., product name OHA glass (hereinafter referred to as OHA glass) is suitable.
  • the use of the OHA glass is due to its particular focus on use in the laser wavelength range. As a result, favorable features were obtained.
  • a device that uses a YAG laser (infrared light with a wavelength of 1064 nm) for measuring the distance to a target, such as for military use, and for medical scalpels.
  • YAG laser infrared light with a wavelength of 1064 nm
  • This wavelength range cannot be identified by the human eye.
  • they enter the eye directly there is a high risk of blindness due to damage to the retina.
  • OHA glass enables absorption of laser light in this wavelength range.
  • the extent of absorption depends on the thickness of the OHA glass.
  • the transmittance of heat rays was about 0.1%.
  • the heat ray transmittance is about 5 at a thickness of 1.3 mm. /. Met.
  • the transmittance of the polarizing film itself to heat rays is about 80%. By laminating them, the transmittance of heat rays was reduced to at least the product of both.
  • Example 2 The method of Example 2 was used for laminating and bonding the yellow glass, the polarizing filter, and the OHA glass.
  • Fig. 6 shows the transmittance curve for Example 3 (B0).
  • the rise of the transmittance is the same as that of A1, but the transmittance gradually decreases from 600 nm to around 1000 nm, and the transmittance rises to 1064 nm. At about 3%.
  • Example 4
  • an infrared reflection coat was further added to the OHA glass.
  • This coating increased the heat ray absorption effect.
  • the angle of view of binoculars is about 10 degrees at the maximum. This is 5 degrees earth with respect to the optical axis.
  • OHA glass has a wavelength of 1064 nm and a thickness of 1.3 mm, and the transmittance of heat rays is about 5%.
  • IR coat has a transmittance of 0.54 nm at a wavelength of 1.064 nm. /. By stacking these, at least the product of both becomes 0.025%. As a result, the transmittance of heat rays was reduced to 1/200. This was confirmed to be superior to Example 5 described later in terms of low transmittance.
  • Example 1 The method of Example 1 was used as a bonding method with a polarizing filter interposed between the yellow glass and the heat ray absorbing glass.
  • FIG. 7 is a transmittance curve for Example 4 (B1), where the rise of the transmittance is the same as that of A1, but from 600 nm to near 700 nm, If it exceeds, the transmittance sharply decreases and less than 1% can be easily achieved at 800 nm. Further, in the vicinity of 106 4 1 111, less than 0.01% could be achieved c
  • Example 5
  • Example 2 since two yellow glasses were used in the same manner as in Example 2, the cutting ability in the violet to blue wavelength region was improved, and as a result, the resolution of a distant view was improved. In particular, clear effects were found by identifying objects on the horizon or horizon. Furthermore, compared to Example 4, emphasis was placed on the cut from purple to blue, and the transmittance of heat rays at a wavelength of 1064 nm was slightly larger.
  • connection between the yellow glass and the heat ray absorbing glass with a polarizing filter in between The method of Example 2 was used as the method of attachment.
  • FIG. 8 is a transmittance curve for Example 5 (B 2), where the rise of transmittance is the same as that of A 2, and the transmittance sharply decreases from 700 nm to around 800 nm after wavelength 700 nm However, less than 2% was easily achieved at 800 nm. Furthermore, it is 0.1 near the wavelength of 1064 nm. /. Was achieved.
  • the use of the IR coat is used for the purpose of preventing transmission of heat rays due to reflection of the dielectric vapor-deposited multilayer film. This is the so-called infrared reflection.
  • attention should be paid to the incident light on the coat surface that is, the angle dependence on the optical axis.
  • consideration for the optical axis of a binocular is at most about 10 degrees.
  • the IR coat was effective up to about 45 degrees and could be used sufficiently.
  • Dielectric deposited multilayers are formed by alternating layers of titanium oxide (Ti02) and quartz (Si02).
  • OHA glass can be said to be an absorption type.
  • the coating on the glass surface is extremely thin (5 to ⁇ ⁇ ⁇ ), and care must be taken to avoid scratching or other frictional delamination.
  • the IR coated surface is set to the inside of the bonding surface. The effect of avoiding the risk of peeling and reducing the transmission of heat rays to the glass was recognized.
  • Table 2 shows an example in which the filter of the present invention was installed, and Table 3 shows a camera in the comparative example (group AO) and the conventional example which were published (Japanese Patent Application Laid-Open No. 10-62695). It is an experiment with an optical filter for use. Since the filter of the conventional example was not easily mounted, the experiment was performed without mounting.
  • the effect of purple to blue cut is considered as follows. It is generally known that light is scattered by fine particles or air molecules in the air, and its intensity is proportional to the reciprocal of the fourth power of the wavelength. Therefore, light of shorter wavelength is more easily scattered. For example, when comparing short-wavelength purple (400 nm) and long-wavelength red (700 nm), the light scattering intensity is about 9.3 times higher, and purple is more scattered. Is understood. For this reason, scattering of light of a short wavelength has become a major obstacle in long-range visibility, but it has been confirmed that the improvement effect of the present invention is extremely high. Table 3
  • the results are also shown in the transmittance curves in Table 2, Figures 4 to 8. That is, the comparative example (AO) had a UV cut of 80%, and the examples 1 (A1) to 5 (B2) all had a UV cut of 100%. As a result, the safety against ultraviolet rays was confirmed.
  • the comparative example (AO) does not hinder normal use in nature, but is not a perfect cut.
  • Example 1 (Al) and Example 2 (A2) 10% or less
  • Example 3 (B0) 95 ° / °.
  • Example 4 (B 1) to Example 5 (82) the cut of one laser beam was 99.9% or more.
  • Example 3 to 5 corresponded to a considerably strong laser beam.
  • Applications include laser guns, powerful laser weapons, distance measurement with laser light, and the ability to observe and monitor other laser light sources from a distance, thus ensuring safety against erroneous viewing.
  • Example 4 (B 1) was a laser-light cut of 99.99% or more, which could ensure safety even at short distances.
  • the polarizing filter is detachably attached to the binocular adapter, so it can be easily rotated and the transmittance of reflected light can be easily reduced to the lowest value by visual observation.
  • the operation can be performed quickly and easily, and the structure of the binocular adapter itself is simple, and the maintenance is easy. Also, the reflected light on the nonmetallic surface could be cut. Furthermore, in comparison with the comparative examples in Tables 2 and 3, in Examples 2 and 5, excellent results were obtained in the interior confirmation due to less reflection in the interior confirmation and in-car confirmation through the window glass. . In addition, the comparisons with the conventional examples and comparative examples shown in Tables 2 and 3 and FIGS. 4 to 8 show the remarkable effects of the present invention.
  • the basic configuration of the device including the adapter for binoculars and the filter thereof has been described, but the zoom binoculars such as the objective zoom type and the eyepiece zoom type of the so-called prism binoculars and the Newton ring are within two. It is also possible to use with high precision binoculars
  • the reflected light on the non-metallic surface can be cut, and a remarkable effect has been confirmed particularly in use of the apparatus of the present invention at sea. This is expected to substantially increase the resolution of binoculars.
  • a binocular adapter which does not exist in the prior art, for example, which can ensure the safety of eyes from ultraviolet rays, and an optical filter using the adapter.
  • the peak wavelength of human luminosity was focused on, and by cutting wavelengths around 490 nm or less with a filter, the eye identification function could be maximized. did it.
  • the power in the violet to blue wavelength range which easily scatters and hinders the identification of distant views.
  • This result increased the resolution of distant views, and was found to be particularly effective in identifying objects on the horizon and horizon.
  • the reflected light was blocked by the polarizing filter and the ultraviolet light was blocked by the yellow glass.
  • the effect was not affected by the weather.
  • the binoculars have a light-collecting ability that is too strong for the eye and has an adverse effect, but the polarizing filter cuts slightly more than 60% of the total light amount, so the brightness is good enough.
  • the use of a polarizing film darkens the average transmittance at the visible light castle to about 35 to 40%.
  • the brightness of the field of view can be ensured by canceling out the light-gathering ability.
  • the combination of these filters can be expected to be used as all-weather binoculars, because it cuts off the reflection of water in rainy weather and, in cloudy weather, combines the above-mentioned effects of yellow glass.
  • heat-absorbing glass focuses on its use in the laser wavelength range. In particular, it is used for measuring the distance to a target in military applications and for medical scalpels, but this wavelength range cannot be identified by human eyes. Also, if they enter the eye directly, there is a high risk of blindness due to retinal damage. ⁇
  • the use of HA glass can absorb one laser beam in this wavelength range.
  • an experimental confirmation of the thickness could be set in consideration of the combination with a type of polarizing filter and a good thickness.
  • this coat increased the heat absorbing effect.
  • a special effect can be expected by using a polarizing filter and various glasses and coats.

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  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Telescopes (AREA)

Abstract

L'invention concerne un adaptateur pour jumelles et son procédé de fabrication. L'adaptateur peut être facilement monté sur des jumelles et retiré de ces jumelles, il est monté sur un côté de l'objectif, et apporte une amélioration significative en ce qui concerne la protection des yeux contre les rayons laser et la capacité d'identification à l'horizon, grâce au perfectionnement d'une définition de visibilité longue distance; l'adaptateur comprend un corps d'adaptateur logé à l'intérieur d'une surface périphérique de l'adaptateur et comportant plusieurs éléments flexibles de retenue de barillet de lentille bloqués contre une périphérie extérieure de l'adaptateur, ainsi qu'un filtre de polarisation et d'interception de rayons ultraviolets monté détachable sur le corps de l'adaptateur et comprenant une strate de verre jaune et un filtre de polarisation, un verre sélectionné dans le groupe formé par des verres tels que le verre jaune étant stratifié et fixé sur un côté du filtre de polarisation.
PCT/JP1998/002624 1997-06-16 1998-06-15 Adaptateur pour jumelles et son procede de fabrication WO1998058290A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9/175240 1997-06-16
JP17524097 1997-06-16

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WO1998058290A1 true WO1998058290A1 (fr) 1998-12-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012014133A (ja) * 2010-06-30 2012-01-19 Marumi Koki Kk 多機能付偏光フィルター及び多機能付偏光フィルターの製造方法
JP2013117646A (ja) * 2011-12-05 2013-06-13 Marumi Koki Kk デジタルカメラ用の特殊機能付き円偏光フィルター

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010252U (fr) * 1973-05-25 1975-02-01
JPS5289124U (fr) * 1975-12-26 1977-07-04
JPS56135809A (en) * 1980-03-26 1981-10-23 Hino Kinzoku Sangyo Kk Filter for astronominal observation
JPH02248916A (ja) * 1989-03-23 1990-10-04 Matsushita Electric Ind Co Ltd 光学部品の製造方法
JPH04120915U (ja) * 1991-04-16 1992-10-29 株式会社ニコン 自動光量制御フイルター付き望遠鏡
JPH0983879A (ja) * 1995-09-18 1997-03-28 Mitsubishi Electric Corp 車載カメラ装置
JPH09183637A (ja) * 1995-12-28 1997-07-15 Nikon Corp 光学部品及びその製造方法
JPH1062695A (ja) * 1996-08-19 1998-03-06 Sanyu Seni:Kk 双眼鏡用アダプタ

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010252U (fr) * 1973-05-25 1975-02-01
JPS5289124U (fr) * 1975-12-26 1977-07-04
JPS56135809A (en) * 1980-03-26 1981-10-23 Hino Kinzoku Sangyo Kk Filter for astronominal observation
JPH02248916A (ja) * 1989-03-23 1990-10-04 Matsushita Electric Ind Co Ltd 光学部品の製造方法
JPH04120915U (ja) * 1991-04-16 1992-10-29 株式会社ニコン 自動光量制御フイルター付き望遠鏡
JPH0983879A (ja) * 1995-09-18 1997-03-28 Mitsubishi Electric Corp 車載カメラ装置
JPH09183637A (ja) * 1995-12-28 1997-07-15 Nikon Corp 光学部品及びその製造方法
JPH1062695A (ja) * 1996-08-19 1998-03-06 Sanyu Seni:Kk 双眼鏡用アダプタ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012014133A (ja) * 2010-06-30 2012-01-19 Marumi Koki Kk 多機能付偏光フィルター及び多機能付偏光フィルターの製造方法
US8670177B2 (en) 2010-06-30 2014-03-11 Marumi Optical Co., Ltd. Multifunctional polarizing filter and method for manufacturing the same
JP2013117646A (ja) * 2011-12-05 2013-06-13 Marumi Koki Kk デジタルカメラ用の特殊機能付き円偏光フィルター

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