CN2516989Y - 35B/16 deformation lens for motion picture film processing machine - Google Patents
35B/16 deformation lens for motion picture film processing machine Download PDFInfo
- Publication number
- CN2516989Y CN2516989Y CN 02201939 CN02201939U CN2516989Y CN 2516989 Y CN2516989 Y CN 2516989Y CN 02201939 CN02201939 CN 02201939 CN 02201939 U CN02201939 U CN 02201939U CN 2516989 Y CN2516989 Y CN 2516989Y
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- CN
- China
- Prior art keywords
- lens
- film
- group
- deformation
- mirror group
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- 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 - Fee Related
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Abstract
The utility model relates to a film printing equipment, especially relates to a printing lens for the film printer, which is characterized in that the ratio between the focal length f1 of the front lens group 1 and the focal length f3 of the back lens group equals 2, that is: f1/f3=2; the deformation coefficient is 2; when in working state, the bus of the cylindrical lens of deformation lens group 2 is vertical to the vertical plane. The utility model has an advantage that no wide-screen lens is needed when screening non-deformation wide-screen film; instead, the normal film screening lens can be used, which is convenient for the users.
Description
The utility model relates to Film Processing equipment, particularly a kind of motion picture printer lens that is used for film printer.
Usually said wide screen film is said to be meant the distortion wide screen film definitely.This film has used cylindrical distortion cover mirror that the compression of subject along continuous straight runs is imaged on the egative film for two times when taking.So the image on the egative film all is the deformation pattern of two times of horizontal compression.This wide screen film also needs to use the anamorphic effect that contains cylindrical lens that the deformation pattern along continuous straight runs on the film is enlarged two times again in projection---and be reduced into normal image, show in the screen.
16 millimeters film copies are mainly derived from 35 millimeters film source materials.Use film printer and motion picture printer lens according to certain scale down, 35 Super 35 mm film Super 35s (program picture or wide screen film) correspondingly are made into 16 millimeters program pictures or wide screen film.16 millimeters wide screen films of Zhi Zuoing are the distortion wide screen film equally like this.
In China, vast rural area, small towns and the backcountry projection distribution beyond mainly in the city of 16 millimeters films.Motion picture projection team flows, and they are carrying motion picture projection equipment and film, crosses over mountain after mountain in the various places road-show.Because 16 millimeters common projection lens of film of projection will be used anamorphic effect and show 16 millimeters wide screen films, they must carry two kinds of motion picture projection lenses, and are very inconvenient.Moreover; The mutual dislocation phenomenon often takes place in the cylindrical lens in the anamorphic effect in transportation and use, seriously have influence on project effect, makes picture unclear, even can not put film.These faults do not have special instrument to be difficult to maintenance again, bring very big inconvenience for the motion picture projection personnel.
The purpose of this utility model is to provide a kind of motion picture printer lens that is used for film printer.Use this camera lens 35 millimeters direct contractions of distortion wide screen film can be become 16 millimeters non-distortion wide screen films.Showing non-distortion wide screen film just no longer needs anamorphic effect, just passable with common motion picture projection lens, thereby has made things convenient for the user.16 millimeters non-distortion wide screen films of the redaction of producing have simultaneously increased the circulation and the economic benefit that copy.
This film printer 35B/16 deformation lens, mirror group 1, back mirror group 3 and distorting lens group 2 are formed before comprising, it is characterized in that: distorting lens group 2 is between preceding mirror group 1 and back mirror group 3, before mirror group 1 and back mirror group 3 constitute by spherical lens, distorting lens group 2 is made of cylindrical lens, feature is: the focal distance f 1 of its preceding mirror group 1 equals 2 with the ratio of the focal length B of back mirror group 3, that is: f1/f3=2, the deformation coefficient of distorting lens group 2 is 2, in the time of in working order, the bus of the cylindrical lens of distorting lens group 2 is perpendicular to perpendicular.
Drawings and Examples:
Fig. 1 is the vertical cross-sectional schematic of film printer 35B/16 deformation lens
Claims (1)
1, a kind of film printer 35B/16 deformation lens, mirror group (1), back mirror group (3) and distorting lens group compositions such as (2) before comprising, it is characterized in that: distorting lens group (2) is positioned between preceding mirror group (1) and the back mirror group (3), preceding mirror group (1) and back mirror group (3) are made of spherical lens, distorting lens group (2) is made of cylindrical lens, before the ratio of focal distance f 1 and the focal distance f 3 of back mirror group (3) of mirror group (1) equal 2, that is: f1/f3=2, the deformation coefficient of distorting lens group (2) is 2; In the time of in working order, the bus of the cylindrical lens of distorting lens group (2) is perpendicular to perpendicular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02201939 CN2516989Y (en) | 2002-01-05 | 2002-01-05 | 35B/16 deformation lens for motion picture film processing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02201939 CN2516989Y (en) | 2002-01-05 | 2002-01-05 | 35B/16 deformation lens for motion picture film processing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2516989Y true CN2516989Y (en) | 2002-10-16 |
Family
ID=33684648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02201939 Expired - Fee Related CN2516989Y (en) | 2002-01-05 | 2002-01-05 | 35B/16 deformation lens for motion picture film processing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2516989Y (en) |
-
2002
- 2002-01-05 CN CN 02201939 patent/CN2516989Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |