EP1086396A1 - Instrument catadioptrique - Google Patents

Instrument catadioptrique

Info

Publication number
EP1086396A1
EP1086396A1 EP99915961A EP99915961A EP1086396A1 EP 1086396 A1 EP1086396 A1 EP 1086396A1 EP 99915961 A EP99915961 A EP 99915961A EP 99915961 A EP99915961 A EP 99915961A EP 1086396 A1 EP1086396 A1 EP 1086396A1
Authority
EP
European Patent Office
Prior art keywords
case
tube
constructed
cover
unit
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.)
Ceased
Application number
EP99915961A
Other languages
German (de)
English (en)
Inventor
Attila Tóth
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
Priority claimed from HU9800103U external-priority patent/HU1493U/hu
Priority claimed from HU9901141A external-priority patent/HU222707B1/hu
Application filed by Individual filed Critical Individual
Publication of EP1086396A1 publication Critical patent/EP1086396A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0852—Catadioptric systems having a field corrector only
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/08—Catadioptric systems
    • G02B17/0804—Catadioptric systems using two curved mirrors
    • G02B17/0808—Catadioptric systems using two curved mirrors on-axis systems with at least one of the mirrors having a central aperture
    • 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

Definitions

  • the invention relates to a panoramic telescope that provides a right-way- up image and can be used widely in the field of photography, hunting and astronomy.
  • Lens- type panoramic telescopes have a long tube and cannot be used for close observation, among them the simpler systems provide an upside-down image. Due to their weight it is difficult to hold them with the hands, and due to the length of the tube the trembling of the hands results in a disturbing effect in the case of high magnification. In the case of a short tube several lens systems are required, which results in a loss of light and increases the weight of the equipment. In most cases magnification can only be changed by changing the eyepiece.
  • Medial telescopes e.g.: Maksutov-telescopes
  • Maksutov-telescopes provide an upside-down image, their magnification can only be adjusted by changing the eyepiece. They are heavy, they cannot be held in the hands. They are difficult and expensive to produce. In the case of high magnification the short-focus eyepiece is uncomfortable for the eyes, and it is difficult to find the aiming point.
  • the solution according to the invention is based on the recognition that if the panoramic telescope is constructed so that an adjustable case unit is attached to the tube case of the panoramic telescope with a threaded unit, and in the case end, where the said adjustable case unit ends, a transparent plate is placed practically made of glass, and the plane secondary mirror is constructed or placed in the middle of this transparent plate, then the set aim can be achieved.
  • the eyepiece lens is placed in the cover of the tube case, in the optical axis of the panoramic telescope, and inside the tube case a lens holding tube is attached to the cover of the tube case, and the positive extension piece and the shadowing tube are placed on this lens holding tube.
  • the invention on the one part is a panoramic telescope that is constructed with a lens placed in the tube case and with a movable ocular attached to it from the outside, so that a flat secondary mirror is placed in the case end of the tube case, inside the tube case there is a shadowing tube, preferably attached to the cover of the tube case and a positive extension piece constructed from achromatic lenses, and underneath the positive extension piece, centred with the opening in the middle of it and with the optical axis of the panoramic telescope, there is a primary mirror, and the movable ocular is constructed with an eyepiece lens consisting of achromatic lenses.
  • an adjustable case unit is attached to the tube case with a threaded unit, and in the case end, where the said adjustable case unit ends, a transparent plate is placed practically made of glass, and the flat secondary mirror is constructed or placed in the middle of this transparent plate.
  • the invention is a panoramic telescope that is constructed with a lens placed in the tube case, so that a flat secondary mirror is placed in the case end of the tube case, inside the tube case there is a shadowing tube and a positive extension piece constructed from achromatic lenses, and underneath the positive extension piece, centred with the opening in the middle of it and with the optical axis of the panoramic telescope, there is a primary mirror, and the optical system contains an eyepiece lens consisting of achromatic lenses.
  • a lens holding tube is attached to the cover of the tube case, and the positive extension piece and the shadowing tube are situated on this lens holding tube, the eyepiece lens is placed in the cover of the tube case in the optical axis of the panoramic telescope, and an adjustable case unit is attached to the tube case with a threaded unit, and in the case end, where the said adjustable case unit ends, a transparent plate is placed practically made of glass, and the flat secondary mirror is constructed or placed in the middle of this transparent plate.
  • a cover ring is placed in the case end, and in order to limit the movement of the adjustable case unit there is stop screw on the adjustable case unit.
  • the movable ocular is attached to the ocular holder, practically with a screw thread, fixed on the cover of the tube case, and in the said movable ocular there is the scanning screen and the eyepiece lens constructed from achromatic lenses, and the viewfinder is placed at the end of the movable ocular, after the eyepiece lens.
  • Figure 1 shows a possible construction of the panoramic telescope according to the invention in semi-view - semi-section.
  • FIG 2 shows another possible construction of the panoramic telescope according to the invention in semi-view - semi-section.
  • a possible construction of the panoramic telescope according to the invention can be seen in semi-view - semi-section.
  • the panoramic telescope consists of a tube case (1) and a movable external ocular (3) attached to the tube case (1) with an ocular holder (2).
  • the tube case (1) has an adjustable case unit (4) that is attached to the tube case (1) with a threaded unit (5).
  • a stop screw (24) in the end of the adjustable case unit (4).
  • the adjustable case unit (4) is ended with the case end (6) in which there is a transparent plate (7) practically made of glass.
  • a flat secondary mirror (8) is constructed or placed in the middle of the transparent plate (7) .
  • the covering of the external edge of the transparent plate (7) is ensured by a cover ring (25).
  • Inside the tube case (1) there is the shadowing tube (9) attached to the cover (13) of the tube case (1), and under the said shadowing tube (9) there is a positive extension piece (10) practically constructed from achromatic lenses (11, 12).
  • the squeeze plate (27) is between the primary mirror (14) and the cover (13).
  • the movable ocular (3) is connected to the ocular holder 92) fixed firmly on the cover (13) of the tube case (1), practically with a screw thread, and in the said ocular (3) there is the scanning screen (21) and the eyepiece lens (17) practically built from achromatic lenses (18, 19).
  • the viewfinder (20) is placed at the end of the movable ocular (3), after the eyepiece lens (17).
  • the light path is marked with arrows.
  • the light gets in the tube case (1) of the panoramic telescope through the transparent plate (7) placed in the case end (6), and it is reflected from the parabolic or spherical primary mirror (14) situated in the cover (13) of the tube case (1) to the flat mirror (8) situated in the case end (6).
  • the light goes along the positive extension piece through the shadowing tube (9), then it goes through the opening (15) in the middle of the primary mirror (14) and it is projected into the ocular (3).
  • the light goes through the scanning screen (21) and the eyepiece lens (17), and then it leaves the panoramic telescope through the viewfinder (20) and it gets to the viewer.
  • the flat mirror (8) is oversized, so in the case that it is adjusted, in the course of changing the magnification no disturbing external light can be projected onto the extension piece (10), so the quality of the gained image will always be appropriate, and the shadowing tube (9) does not need to be moved separately.
  • the sharpness and magnification of the panoramic telescope shown in figure 1 can be set by shifting the position of the ocular (3) and the secondary mirror (8) related to each other on the t optical axis.
  • the changing of the position of the ocular (3) is made possible by the threaded fixing of the ocular (3) on the ocular holder (2).
  • the adjustment of the secondary mirror (8) is practically done by turning the threaded unit (5) of the case end (6).
  • the secondary mirror (8) can be moved along the t optical axis in a different way, for example, by moving only the transparent plate (7) or the secondary mirror (8) on the t optical axis.
  • the basic adjustment of this construction of the panoramic telescope is done by putting the positive extension piece (10) and the primary mirror (14) in the right position. They only need to be moved to achieve the basic adjustment.
  • the squeeze plate (27) situated underneath the primary mirror (14) ensures the equal distribution of the mechanical tightening force and the parallelism of the optical axes.
  • the panoramic telescope according to the invention consists of a tube case (1), a positive extension piece (10) situated on the lens holding tube (26) attached to the cover (13) of the tube case (1) and an eyepiece lens (17) placed in the cover (13).
  • the tube case (1) has an adjustable case unit (4) attached to the tube case (1) with a threaded unit (5). In order to limit the movement of the adjustable case unit (4) there is stop screw (24) in the end of the adjustable case unit (4).
  • the adjustable case unit (4) is ended with the case end (6) in which there is a transparent plate (7) practically made of glass.
  • the covering of the external edge of the transparent plate (7) is ensured by a cover ring (25).
  • a flat secondary mirror (8) is constructed or placed.
  • the shadowing tube (9) attached to the extension piece (10) practically constructed from achromatic lenses (11, 12).
  • the primary mirror (14) In the cover (13), underneath the lens holding tube (26) there is the primary mirror (14), the eyepiece lens (17) and the orientation distance ring (16) centred with the opening (15) of the cover 6
  • the squeeze plate (27) is between the primary mirror (14) and the cover (13).
  • the light path is marked with arrows.
  • the light gets in the tube case (1) of the panoramic telescope through the transparent plate (7) placed in the case end (6), and it is reflected from the parabolic or spherical primary mirror (14) situated in the cover (13) of the tube case (1) to the flat mirror (8) situated in the case end (6).
  • the light goes across the scanning screen (21) through the shadowing tube (9) and the positive extension piece (10), then it is projected into the eyepiece lens (17) through the opening (15) in the middle of the primary mirror (14).
  • the light leaves the panoramic telescope through the viewfinder (20) and it gets to the viewer.
  • the flat mirror (8) is oversized in the case of this construction, too, so in the case that it is adjusted, in the course of changing the magnification no disturbing external light can be projected onto the extension piece (10), so the quality of the gained image will always be appropriate, and the shadowing tube (9) does not need to be moved separately.
  • the sharpness and magnification of the panoramic telescope shown in figure 2 can be set by shifting the position of the extension piece (10) and the secondary mirror (8) related to each other on the t optical axis.
  • the adjustment of the secondary mirror (8) is practically done by turning the threaded unit (5) of the case end (6).
  • the secondary mirror (8) can be moved along the t optical axis in a different way, for example, by moving only the transparent plate (7) or the secondary mirror (8) on the t optical axis.
  • the basic adjustment of this construction of the panoramic telescope is done by putting the positive extension piece (10) and the primary mirror (14) in the right position. They only need to be moved to achieve the basic adjustment.
  • the squeeze plate (27) situated underneath the primary mirror (14) ensures the equal distribution of the mechanical tightening force and the parallelism of the optical axes.
  • an intermediate link is put in the place of the ocular (3), which makes connection possible to a camera.
  • a prismatic reversing piece in the adjustment link By using a prismatic reversing piece in the adjustment link, a right-way-up image is received in the camera, and by this the telescope operates as a camera and/or video camera objective.
  • increasing the length of the ocular (3) results in higher magnification. It can also be done by increasing the length of the ocular holder (2) or by using a telescope or lengthening piece on the cover (13) of the tube case (1). Practically the primary mirror (14) is adjusted and fixed to the cover (13) of the tube case (1) with six adjusting elements (23), for example, grub screws.
  • the scanning screen (21) situated in the ocular (3) is built as one unit and moves in line with the eyepiece lens (17).
  • the scanning screen (21) cuts off the disturbing cone of light, the opening on it is smaller than the diameter of the achromatic lenses (18, 19) situated in the eyepiece lens (17). Its angle of view is about 60 degrees.
  • the clamping and fixing of the panoramic telescope according to the invention can be done with the help of a stand clamp (22), which is placed on the cover (13) of the tube case (1).
  • the solution according to the invention can also be used in binocular construction, which makes direct observation possible with the eyes easier.
  • the adjustment of the magnification and/or the sharpness is also possible by moving the positive extension pieces (10) of the panoramic telescope situated next to each other simultaneously.
  • the complete length of the panoramic telescope according to the invention is 400 mm
  • the external diameter of the tube case (1) is 100 mm
  • its internal diameter is 93 mm.
  • Its angle of view is maximum 0.8 degrees.
  • Its effective focus is maximum 1800 mm; it has a magnification of 100 times in the case of an 18 mm focus lens system.
  • the diameter of the primary mirror (14) is 92 mm.
  • the diameter of the secondary mirror (8) is 42 mm, and the diameter of the transparent plate (7) is 95 mm, it is 3 mm thick. Constructed with these parameters the range of observation can be varied continuously from 5 m to infinity, and the magnification from 20 to 100 times.
  • the telescope in the case of a possible practical concrete realisation of the solution according to the invention, in the case of the construction according to figure 2, the telescope can be attached to the camera or video camera with connection piece. In the camera a right-way-up image is received immediately, and by this the telescope operates as a camera and/or video camera objective.
  • the eyepiece lens (17) consisting of achromatic lenses (18, 19) can be either firmly fixed or movable.
  • the advantage of the solution according to the invention is that it provides a right-way-up image that is much more favourable for the viewer, and at the same time it can be produced cheaper than other types of similar systems.
  • the solution according to the invention can be used favourably in the field of panorama observation, photographing, hunting and astronomy.
  • the closed mechanical construction provides dust- protection and it prevents the deterioration of the optical parameters.
  • the magnification can be set to a wide range, so the lens does not need to be changed in order to change the magnification. It makes the construction cheaper and easier to operate.

Landscapes

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

Abstract

L'invention concerne un télescope panoramique présentant une image droite pour la photographie, la recherche et l'astronomie. Cet instrument comporte une lentille placée dans le boîtier du tube (1) et un oculaire (3). Un miroir secondaire plat (8) est placé à l'extrémité (6) du boîtier du tube (1). A l'intérieur dudit boîtier (1) se trouvent un tube d'ombrage (9), de préférence fixé au coiffe (13) du boîtier (1), et une pièce d'extension positive (10) constituée de lentilles achromatiques (11, 12), sous laquelle est situé un miroir primaire (14) centré sur l'ouverture (15) qui est au milieu de cette pièce positive (10) et centré également sur l'axe optique (t) du télescope panoramique. Par ailleurs, l'oculaire (3) comporte une lentille (17) constituée de lentilles achromatiques (18, 19). L'appareil est caractérisé en ce qu'une unité de boîtier réglable (4) est fixée au boîtier du tube (1) par un élément fileté (5). A l'extrémité (6) du boîtier, là ou se termine l'unité de boîtier réglable (4), une plaque transparente (7) réalisée dans la pratique en verre accueille en son milieu le miroir secondaire plat (8).
EP99915961A 1998-04-15 1999-04-15 Instrument catadioptrique Ceased EP1086396A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
HU9800103U HU1493U (en) 1998-04-15 1998-04-15 Panoramic telescopes
HU9800103 1998-04-15
HU9901141A HU222707B1 (hu) 1998-04-15 1999-04-14 Univerzális teleszkóp
HU9901141 1999-04-14
PCT/HU1999/000026 WO1999053354A1 (fr) 1998-04-15 1999-04-15 Instrument catadioptrique

Publications (1)

Publication Number Publication Date
EP1086396A1 true EP1086396A1 (fr) 2001-03-28

Family

ID=89998104

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99915961A Ceased EP1086396A1 (fr) 1998-04-15 1999-04-15 Instrument catadioptrique

Country Status (3)

Country Link
EP (1) EP1086396A1 (fr)
AU (1) AU3437399A (fr)
WO (1) WO1999053354A1 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4266849A (en) * 1977-03-16 1981-05-12 Warner David A Optical objectives
JPS5459350U (fr) * 1977-10-03 1979-04-24
GB9020902D0 (en) * 1990-09-26 1990-11-07 Optics & Vision Ltd Optical systems,telescopes and binoculars

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9953354A1 *

Also Published As

Publication number Publication date
WO1999053354A1 (fr) 1999-10-21
AU3437399A (en) 1999-11-01

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