SE435869B - FOR LAMP PHOTO AND MOVIE RECORDINGS - Google Patents

FOR LAMP PHOTO AND MOVIE RECORDINGS

Info

Publication number
SE435869B
SE435869B SE7903101A SE7903101A SE435869B SE 435869 B SE435869 B SE 435869B SE 7903101 A SE7903101 A SE 7903101A SE 7903101 A SE7903101 A SE 7903101A SE 435869 B SE435869 B SE 435869B
Authority
SE
Sweden
Prior art keywords
reflector
light bulb
light
optical axis
along
Prior art date
Application number
SE7903101A
Other languages
Swedish (sv)
Other versions
SE7903101L (en
Inventor
R Krieg
R Tannert
Original Assignee
Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
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 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh filed Critical Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh
Publication of SE7903101L publication Critical patent/SE7903101L/en
Publication of SE435869B publication Critical patent/SE435869B/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/04Optical design
    • F21V7/08Optical design with elliptical curvature

Claims (2)

7903101-9 2 stationär glödlampa med en U-formig lyskropp 2 och en skyddsskiva 3 av glas, som är anordnad på avstånd från reflektorn. Reflektorn 1 är förskjutbar en sträcka a=maximalt 15 mm längs den optiska axeln H till det med streckade linjer antyddaläget l'. Då reflektorn be- finner sig i detta läge 1' tjänar den till användning vid teleob- jektiv och möjliggör åstadkommandet av ett ljusknippe med ett halv- vinkelvärde QLT av 300. Reflektorn i läge l tjänar i sin tur till användning vid vidvinkelobjektiv och ger ett ljusknippe med ett halv- vinkelvärde a~w.av 750. Givetvis kan också glödlampan förskjutas i reflektorn längs den optiska axeln H. Ljusstyrkan vid inställnings- läget för teleobjektiv uppgår till 2,5 gånger den vid inställnings- läget för vidvinkelobjektiv. Reflektorn är krökt i enlighet med vad som åskådliggöres i fig. 2. Reflektorns krökning uppfyller_villkoret E 5 x2 - l06,69x + l,9üy2 - 5,88y k f l,94k2 = O där 1) k 2 - l och ligger därmed i det av ellipserna med k = +_l resp. k = - l avgränsade området. Patentkrav.7903101-9 2 stationary light bulb with a U-shaped light body 2 and a protective disc 3 of glass, which is arranged at a distance from the reflector. The reflector 1 is displaceable a distance a = maximum 15 mm along the optical axis H to the position indicated by dashed lines 1 '. When the reflector is in this position 1 ', it serves for use with telephoto lenses and enables the creation of a light beam with a half-angle value QLT of 300. The reflector in position 1 in turn serves for use with wide-angle lenses and provides a light beam with a half-angle value a ~ w.of 750. Of course, the light bulb can also be shifted in the reflector along the optical axis H. The brightness at the setting position for telephoto lenses is 2.5 times that at the setting position for wide-angle lenses. The reflector is curved in accordance with what is illustrated in Fig. 2. The curvature of the reflector satisfies_condition E 5 x2 - l06,69x + 1, 9üy2 - 5,88y kfl, 94k2 = 0 where 1) k 2 - l and thus lies in that of the ellipses with k = + _l resp. k = - l delimited area. Patent claims. 1. För foto- och filmupptagningar avsedd lampa bestående av en i huvudsak elkqßoflüikmnfle reflektor och en elektrisk glödlampa samt med ett längs den optiska axeln omställbart lägesförhållande mellan glödlampan och reflektorn, k ä n n e t e c k n a d a v att reflektorn har en krökning i enlighet med kurvan E 5 X2 - 1o6,69x + 1,9uy2 - 3,88y k + 1,9uk2 = o där1),k>,-1 , _ och glödlampan och reflektorn är inbördes förskjutbara maximalt 15 mm längs den optiska axeln.1. A lamp intended for photographic and film recordings consisting of a substantially electric reflector and an electric light bulb and having an adjustable positional relationship between the light bulb and the reflector along the optical axis, characterized in that the reflector has an E curve 5 in accordance with the curve 1o6,69x + 1,9uy2 - 3,88y k + 1,9uk2 = o there1), k>, - 1, _ and the light bulb and the reflector are mutually displaceable a maximum of 15 mm along the optical axis. 2. Lampa enligt patentkravet l k ä n n e t e c k n a d av att glödlampan utgöres av en halogenglödlampa.Lamp according to Claim 1, characterized in that the light bulb consists of a halogen light bulb. 5. Lampa enligt patentkravet l, k ä n n e t e c k n a'd av att lyskroppen i lampan har kompakt form. U. Lampa enligt patentkravet 1, k ä n n e t e c k n a d av att.lyskroppen är U-formig. . _ _ .,5. A lamp according to claim 1, characterized in that the light body in the lamp has a compact shape. U. A lamp according to claim 1, characterized in that the light body is U-shaped. . _ _.,
SE7903101A 1978-04-07 1979-04-06 FOR LAMP PHOTO AND MOVIE RECORDINGS SE435869B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782815171 DE2815171A1 (en) 1978-04-07 1978-04-07 FILM AND PHOTO RECORDING LIGHT

Publications (2)

Publication Number Publication Date
SE7903101L SE7903101L (en) 1979-10-08
SE435869B true SE435869B (en) 1984-10-22

Family

ID=6036440

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7903101A SE435869B (en) 1978-04-07 1979-04-06 FOR LAMP PHOTO AND MOVIE RECORDINGS

Country Status (5)

Country Link
JP (2) JPS54139723A (en)
DE (1) DE2815171A1 (en)
FR (1) FR2422107A1 (en)
IT (1) IT1117648B (en)
SE (1) SE435869B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000594A1 (en) * 1980-01-09 1981-07-16 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München FILM AND PHOTO RECORDING LAMP
DE3027774A1 (en) * 1980-07-22 1982-02-18 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München REFLECTOR FOR ILLUMINATING A SURFACE
US4591953A (en) * 1982-04-28 1986-05-27 Oram John A Operating theatre table light

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1984432U (en) * 1967-09-16 1968-04-25 Boehme Co Dr Ing CINEMA LIGHT.
US3798668A (en) * 1972-10-05 1974-03-19 Bell & Howell Co Camera light

Also Published As

Publication number Publication date
FR2422107A1 (en) 1979-11-02
IT1117648B (en) 1986-02-17
DE2815171C2 (en) 1987-03-05
IT7967740A0 (en) 1979-04-06
FR2422107B3 (en) 1982-02-05
JPS63157723U (en) 1988-10-17
DE2815171A1 (en) 1979-10-18
SE7903101L (en) 1979-10-08
JPS54139723A (en) 1979-10-30

Similar Documents

Publication Publication Date Title
DE3575805D1 (en) BRACKET FOR OPTICAL LENS.
ATE121200T1 (en) PHOTOGRAPHIC OPTICAL SYSTEM AND CAMERA COMPRISING SUCH SYSTEM.
IT8119749A0 (en) OPHTHALMIC LENS WITH PROGRESSIVELY VARIABLE FOCAL MAGNIFICATION.
ATA22577A (en) AUTOMATIC OPTICAL FOCUSING SYSTEM
DK12777A (en) AUTOMATIC OPTICAL FOCUSING SYSTEM
JPS5432319A (en) Fish eye lens
DE3585960D1 (en) FINE ADJUSTMENT FOR AN OPTICAL LENS.
IT8026302A0 (en) DEVICE FOR FIXING A LAMP ON THE REFLECTOR OF A PROJECTOR.
JPS52121318A (en) Photographic lens of large aperture ratio
JPS5246813A (en) Photographic optical system for observation for ophthalmofunduscopic c amera
SE435869B (en) FOR LAMP PHOTO AND MOVIE RECORDINGS
US4017161A (en) Compact zoom lens
JPS5397824A (en) Camera lens of behind iris
NL7707917A (en) OPTICAL LIGHT POINT ADJUSTMENT.
JPS5432318A (en) Lens for micro-reduction photography
DE2532930A1 (en) OPTICAL AIMING
JPS52130631A (en) Photographic lens of large aperture and super wide angle
JPS5726816A (en) Wide angle zoom lens system consisting of three components
JPS5323645A (en) Zoom lens capable of easy transfer for focal distance range
SU568394A3 (en) Optical lens system with variable focal distance
JPS52126241A (en) Slit illumination device
JPS5297750A (en) Objective lens of medium power
JPS53147507A (en) Focus position controller
JPS547927A (en) Photographic lens of excellent focusing operation
SU669310A1 (en) Variable focal length objective

Legal Events

Date Code Title Description
NUG Patent has lapsed

Ref document number: 7903101-9

Effective date: 19921108

Format of ref document f/p: F