GB1075059A - Improvements in or relating to variable light filters - Google Patents
Improvements in or relating to variable light filtersInfo
- Publication number
- GB1075059A GB1075059A GB40740/64A GB4074064A GB1075059A GB 1075059 A GB1075059 A GB 1075059A GB 40740/64 A GB40740/64 A GB 40740/64A GB 4074064 A GB4074064 A GB 4074064A GB 1075059 A GB1075059 A GB 1075059A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wedge
- enclosure
- cavity
- control knob
- fluid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
- G02B26/023—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light comprising movable attenuating elements, e.g. neutral density filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/24—Liquid filters
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/007—Optical devices or arrangements for the control of light using movable or deformable optical elements the movable or deformable optical element controlling the colour, i.e. a spectral characteristic, of the light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Telescopes (AREA)
Abstract
1,075,059. Optical filters. L. R. APARICIO. Oct.6, 1964 [Dec.7, 1963], No.40740/64. Heading G2J. A variable light filter comprises a transparent enclosure, a transparent wedge-sectioned member 3 immersed in fluid within the enclosure, the cavity 4 defined by the enclosure having a shape corresponding to that of the wedge 3, together with fine adjustment means including a rotatable member 12 mounted in the enclosure, which member produces a linear movement of the wedge 3 in the cavity so as to vary the clearance between the wedge 3 and the enclosure. A bladder 6 full of air at normal atmospheric pressure occupies a small part of the cavity to take up expansion of the fluid with any increase in temperature. In the embodiment of Fig. 2 the adjustment means further comprises a screw 13 fixed to the wedge 3 and co-operating with the screw-threaded member 12 which is manually rotatable by a control knob 10. In further embodiments the linear movement is produced upon rotation of a pinion by a control knob, the pinion engaging a rack on the wedge 3, or upon rotation of a cam which co-operates with a lug on the wedge 3. Alternatively, the wedge may be urged by springs towards one end of the enclosure and brought towards the other end by means of a flexible, inextensible cable which runs round three edges of the wedge, the ends of the cable being attached to a shaft operable by a control knob. The filter may be used for a window or spectacles.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES0294264A ES294264A1 (en) | 1963-12-07 | 1963-12-07 | Improvements in or relating to variable light filters |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1075059A true GB1075059A (en) | 1967-07-12 |
Family
ID=8441185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB40740/64A Expired GB1075059A (en) | 1963-12-07 | 1964-10-06 | Improvements in or relating to variable light filters |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT253812B (en) |
BE (1) | BE656005A (en) |
CH (1) | CH432880A (en) |
ES (1) | ES294264A1 (en) |
GB (1) | GB1075059A (en) |
SE (1) | SE319918B (en) |
-
1963
- 1963-12-07 ES ES0294264A patent/ES294264A1/en not_active Expired
-
1964
- 1964-10-06 GB GB40740/64A patent/GB1075059A/en not_active Expired
- 1964-11-12 CH CH1477664A patent/CH432880A/en unknown
- 1964-11-20 BE BE656005D patent/BE656005A/xx unknown
- 1964-12-03 SE SE14625/64A patent/SE319918B/xx unknown
- 1964-12-07 AT AT1038364A patent/AT253812B/en active
Also Published As
Publication number | Publication date |
---|---|
BE656005A (en) | 1965-03-16 |
ES294264A1 (en) | 1964-06-01 |
CH432880A (en) | 1967-03-31 |
SE319918B (en) | 1970-01-26 |
AT253812B (en) | 1967-04-25 |
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