Telescope having mechanism for automatically returning optical system to a reference dioptric power

• US 5,610,761 A
• Filed: 12/28/1994
• Issued: 03/11/1997
• Est. Priority Date: 12/28/1993
• Status: Expired due to Fees

• Current Assignee: Minolta Co., Ltd. (Konica Minolta Inc.)
• Original Assignee: Minolta Co., Ltd. (Konica Minolta Inc.)
• Inventors: Ishibashi, Kenji, Kimura, Kazuo, Ishida, Iwao, Nishitani, Kiyoshi
• Primary Examiner(s): Callahan, Timothy P.
• Assistant Examiner(s): ZWEIZIG, JEFFERY SHAWN
• Application Number:
  US08/365,506
• Time in Patent Office: 804 Days
• Field of Search: 359/399, 359/404, 359/405, 359/407, 359/410
• US Class Current: 359/407
• CPC Class Codes: G02B 23/18 for binocular arrangements focusing binocular pairs G02B7/06; adjusting pupillary distance of binocular pairs G02B7/12
• CPC Class Codes: G02B 7/06 Focusing binocular pairs

Abstract

A focusing lens for adjusting the dioptric power in accordance with the user'"'"'s dioptric power is provided in each of right and left lens barrels. When a main switch dial is set at a normal position, a microcomputer sets the focusing lens at a dioptric power of 0 by controlling a motor so that the focusing lens moves to a position corresponding to a dioptric power of 0.

Claims

1. A telescope comprising:

an optical system;

a dioptric power adjusting mechanism for driving the optical system to adjust a dioptric power;

a driving source which drives the dioptric power adjusting mechanism;

a specifying member which specifies a position of the optical system corresponding to a predetermined reference dioptric power; and

a controller which controls the dioptric power adjusting mechanism so that the optical system is driven to a reference position specified by the specifying member.

2. A telescope as claimed in claim 1, further comprising:

a storing portion for storing therein a plurality of data each corresponding to a position of the optical system; and

an operation member which specifies a storing of position data in the storing portion,

wherein said dioptric power adjusting mechanism drives the optical system to a position stored in the storing portion in accordance with a specification by the specifying member.

3. A telescope as claimed in claim 2, further comprising a warning displaying member which provides a warning when the operation member is operated under a condition where the specifying member specifies the reference position.

4. A telescope as claimed in claim 1, wherein said optical system is an objective lens system of the telescope.

5. A telescope as claimed in claim 1, further comprising:

a second optical system;

a second dioptric power adjusting mechanism; and

a second driving source,

wherein said telescope constitutes a binocular.

6. A telescope as claimed in claim 1 wherein said predetermined reference dioptric power is obtained by an observation by an emmetropic eye when an object is located substantially at infinity.

7. A telescope comprising:

an optical system;

a dioptric power adjusting mechanism for driving the optical system to adjust a dioptric power;

a driving source which drives the dioptric power adjusting mechanism;

a specifying member which specifies a position of the optical system corresponding to a dioptric power of 0; and

a controller which controls the dioptric power adjusting mechanism so that the optical system is driven to a reference position specified by the specifying member.

8. A telescope as claimed in claim 7, further comprising:

a storing portion for storing therein a plurality of data each corresponding to a position of the optical system; and

an operation member which specifies a storing of position data in the storing portion,

wherein said dioptric power adjusting mechanism drives the optical system to a position stored in the storing portion in accordance with a specification by the specifying member.

9. A telescope as claimed in claim 8, further comprising a warning displaying member which provides a warning when the operation member is operated under a condition where the specifying member specifies the reference position.

10. A telescope as claimed in claim 7, wherein said optical system is an objective lens system of the telescope.

11. A telescope as claimed in claim 7, further comprising:

a second optical system;

a second dioptric power adjusting mechanism; and

a second driving source,

wherein said telescope constitutes a binocular.

12. A telescope comprising:

an optical system;

a specifying member which is operable by an operator and specifies reset of a position of the optical system to a reference position corresponding to a predetermined reference dioptric power; and

a dioptric power adjusting mechanism which automatically moves the optical system to the reference position.

13. A telescope comprising:

an optical system;

a specifying member which is operable by an operator and specifies reset of a position of the optical system to a reference position of a dioptric power of 0; and

a dioptric power adjusting mechanism which automatically moves the optical system to the reference position.