GB1075059A - Improvements in or relating to variable light filters - Google Patents

Improvements in or relating to variable light filters

Info

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
Application number
GB40740/64A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1075059A publication Critical patent/GB1075059A/en
Expired legal-status Critical Current

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.
GB40740/64A 1963-12-07 1964-10-06 Improvements in or relating to variable light filters Expired GB1075059A (en)

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)

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

Similar Documents

Publication Publication Date Title
GB1470755A (en) Adjustable mirror structure
IT1017386B (en) STEERING SERVO MECHANISM WITH SAFETY VALVE ON THE PISTON OR O RE
ES442178A1 (en) Optical fibre terminations
GB1501738A (en) Binocular telescope
GB1075059A (en) Improvements in or relating to variable light filters
GB1422490A (en) Wide angle lens
ES245011U (en) Window raiser
ES455873A1 (en) Control device for a rearview mirror
GB2009960A (en) Distortion corrected holographic optical elements
FR1374010A (en) Mounting by gluing corrective lenses on an underwater mask
GB1092829A (en) Convertible sun-bathing eye shield and sun glasses with expandible field of vision
GB1400219A (en) Aperture adjustment in optical assembly
GB1248362A (en) Optical profile projection systems
GB1386310A (en) Fully closing iris diaphragm
GB1159770A (en) Stabilized Optical Systems.
GB1463629A (en) Astronomic telescope mounts
GB1245455A (en) Improvements in and relating to optical microscopes
GB980588A (en) Improvements in or relating to motion-picture camera lens mount
DEMIDOV et al. The automatic telescope AZT-11
GB1173364A (en) Photographic Objective
GB994150A (en) Improvements in or relating to mountings for astronomical telescopes
GB1337053A (en) Photographic apparatus having lens carrier and securing means therefor
GB972330A (en) Improvements relating to sight glass mountings
IONNISIANI A telescope with a 6-metre mirror(Design theory for large optical telescope)
ES173410U (en) Perfected roller for the application of paints to oil and tempered peak. (Machine-translation by Google Translate, not legally binding)