JPH02284113A - Binocular with vibration proof means - Google Patents

Abstract

PURPOSE:To correct the blur of an observed image by reflecting a pair of luminous fluxes, which has passed through a pair of objective lenses, so that the fluxes come nearer to each other, and providing an integrated pair of vibration proof means so as to be driven and controlled through the use of a single driving means, in the position where the pair of luminous fluxes are close to each other. CONSTITUTION:The pair of luminous fluxes which has passed through the pair of objective lenses 1a and 1b is reflected from the integrated pair of second reflecting parts 3a and 3b toward an object after being reflected from a pair of first reflecting parts 2a and 2b so that the fluxes come nearer to each other. The pair of luminous fluxes is led by a pair of rhombic prisms 9a and 9b after being reflected from third and fourth reflecting parts 6 and 8 in sequence; consequently, an observed image is formed near a light exit surface, and is observed by a pair of eyepiece lenses 10a and 10b. The pair of second reflecting parts 3a and 3b and the third reflecting part 6 are turned around their respective axes by driving actuators 5 and 7, respectively, each of which is one component of the vibration proofing means, in response to the output signal from a blur detecting means. Since picture blur is reversely corrected, observed picture blur can be corrected.

Description

Detailed Description of the Invention (Field of Application in Business A) The present invention relates to binoculars with anti-vibration means, and in particular to a method for reducing blurring of observed images that occurs when the binoculars vibrate or blur.
Binoculars with anti-vibration means corrected by eccentrically driving a pair of reflecting mirrors or an image blur correction system with one driving means to simultaneously deflect a pair of light beams passing through a pair of objective lenses It is.

(Prior art) When using binoculars with a high magnification (observation magnification) of about 8 to 10 times, when observing while holding the number of words ff1tl with both hands, even if one hand shakes slightly, the observed image will blur, making it very unsightly. Become something. This tendency becomes even more pronounced when observing from a vehicle or ship, making it extremely difficult to observe.

Conventionally, binoculars equipped with so-called anti-vibration means for correcting the blurring of the observed image with such twin 11N mirrors have been developed, for example, by
It has been proposed in Publication No. 7-37852 and the like.

In this publication, Pechan prisms for positive q images are fixed to a gyro and placed on the optical axis of a pair of objective lenses, and each of the pair of Pechan prisms is eccentrically driven in response to vibrations and blurring of the binoculars. This corrects blur in the observed image.

Binoculars using Pechan prisms have the advantage that the optical axis of the objective lens and the optical axis of the light beam after exiting the Pechan prism are approximately aligned, and the optical axes of the pair of objective lenses are parallel. . Also, this double + 1J ta is! The distance between the optical axes of the pair of objective lenses and the distance between the optical axes of the Pechan prism is -
It becomes.

(Problems to be Solved by the Invention) Generally, in order to achieve high magnification and high resolution in binoculars, and to obtain a bright observation image, it is necessary in principle to increase the effective diameter of the objective lens. However, when the effective diameter of the objective lens is increased, the distance between the optical axes of the two objective lenses becomes wider, and accordingly, the distance between the positive prisms also becomes wider.

For this reason, the observation image blur correction system has also become larger, and in particular, the prism has become larger and heavier, increasing the load on the gyro that spatially holds the prism, leading to problems such as increased power consumption of the drive source. was there.

On the other hand, from a pair of objective lenses that make up binoculars,
It is also conceivable to provide a vibration isolating means such as a so-called variable apex angle prism whose apex angle changes due to vibration or blurring in the optical path leading to the pair of eyepiece lenses. However, with this method, each vibration isolation means has a degree of freedom to deflect the observation image, so it is difficult to reduce the vertical or horizontal tilting of the left and right optical axes, and two actuators are required, making the entire device large. There was a problem that the process became complicated.

The present invention is capable of easily and quickly correcting the shaking of heavy machinery caused by vibrations and shakes even when using an objective lens with a large effective diameter, and with a small driving force. The object of the present invention is to provide binoculars with a different configuration of anti-vibration means (image blur correction means).

(Means for Solving the Problems) The twin 114 mirror having the anti-vibration means of the present invention is a pair of binoculars for observing an object image formed by a pair of objective lenses with a pair of eyepieces. A pair of first reflecting parts fixed to the binocular body were provided behind the objective lens or a part of the lens group, and the pair of first reflecting parts passed through the l pair of objective lenses! Reflect the paired beams of light so that they approach each other.

A pair of integrated vibration isolating means is provided at a position where the pair of light beams approach each other so as to be driven and controlled by one driving means, and the pair of vibration isolating means prevents the pair of light beams from vibrating the binoculars. It is characterized in that the light is deflected according to the blurring and blurring, and then guided to the eyepiece lens to correct blurring of the observed image.

(Embodiment) FIG. 1 shows the light of the first embodiment of binoculars according to the present invention. FIG. 2 is a schematic diagram of the main parts of the system.

In the figure, there is a pair of objective lenses la, lb+go.

2a and 2b are a pair of first reflecting parts, which are fixed to the binoculars, so that the pair of light beams in the X direction that have passed through the pair of objective lenses Ia and lb approach each other (the same In the figure, the light is reflected at an angle of approximately 90 degrees, but the angle does not necessarily have to be 90 degrees.) It is reflected in the Y direction. 3a, 3b
is a pair of second reflecting mirrors, and a pair of first reflecting mirrors is 94 tn.
The light beams 2a and 2b are connected and integrated by an arm 4 at a position where the pair of light beams reflected by the light beams 2a and 2b approach each other. Then, the luminous flux from the pair of first reflecting parts 1a and lb is directed toward the object side (-X direction).
It is reflected to

Further, one actuator 5 is provided for each of the pair of second reflecting mirrors 3a and 3b, and the actuator 5 is driven and controlled using the Z axis as a rotation axis. 6 is a third reflecting section, and a pair of second reflecting sections 3a
, 3b are reflected into a plane formed by the light beam incident on the first reflecting portion 1a and the reflected light beam, that is, a plane (YZ plane) perpendicular to the xYv plane. Further, the third reflecting section 6 is provided with an actuator 7.
The drive is controlled using the shaft as the rotation axis.

Reference numeral 8 denotes a fourth reflecting section which reflects the pair of light beams from the third reflecting section 6 in the direction of the optical axes of the pair of objective lenses la and lb and in the direction of row L and j. 9a and 9b are a pair of rhombic prisms, and a pair of eyepieces loa matched to the eye width of the observer.
It has a shape that guides light to lOb. A pair of eyepiece lenses IOa and IOb are arranged with a distance between their optical axes corresponding to the interpupillary distance of the observer.

In this example, each of the above lights? The elements are arranged symmetrically about axis A-A'.

A pair of second reflecting sections 2a and 2b, which are driven and controlled by an actuator 5, and a third reflecting section 6, which is driven and controlled by an actuator 7, constitute one element of the vibration isolation f-stage.

In this embodiment, a pair of light beams that have passed through a pair of objective lenses la and lb are reflected by a pair of first reflecting parts 2a and 2b in a direction approaching σ, and are then integrated into a pair of light beams. The light is reflected toward the object side by the second reflecting portions 3a and 3b. After being sequentially reflected by the third reflecting section 6 and the fourth reflecting section 8, the light is guided to a pair of rhombic prisms 9a and 9b to form an observation image near the exit surface thereof. Then, the observed image is transmitted through a pair of eyepieces loa,
I am trying to detect U with 10b.

In this example, when the binoculars vibrate or blur (hereinafter collectively referred to as "shake"), the blur at that time is
III! It is detected by a vibration detection means, such as an acceleration sensor, a vibrating gyro, or a gyro compass shade provided on a part of the mirror. Then, based on the output signal from the vibration detection means, one of the vibration isolation f-stages 2! ! The actuators 5.7 are each driven to rotate the pair of second reflecting sections 3a, 3b and third reflecting section 6 about their respective axes.

This reversely corrects image blur and corrects blur in the observed image.

In this way, in this embodiment, a pair of light beams are brought close to each other by a reflecting means, and a reflecting section placed in the close position is driven and controlled by one driving means, and the pair of light beams are corrected at the same time. By doing so, the overall structure of the vibration isolation system is made to have n elements.

In this embodiment, the same effect can be obtained by controlling the rotation of the fourth reflecting section 8 using an actuator in place of the third reflecting section 6 with the Y-axis as the rotation axis.

FIG. 2(A) shows the ``V section γ'' of the optical system according to the second embodiment of the present invention.
Schematic view of the plane, FIG. 2 (+31 is a cross-sectional view of the main part of the - part of FIG.

In this figure, the same elements as those shown in FIG. 1 are given the same reference numerals.

11a and llb are the front group of a pair of objective lenses, 21a and 2
1b is! It is a rear group of a pair of objective lenses, and is arranged behind the pair of first reflecting parts 2a and 2b. 22a, 22b
are a pair of second reflection parts, which are made of prism bodies that serve as reflection surfaces 23a and 23b, and a pair of first reflection surfaces 2a, 23b;
A pair of light beams from 2b are reflected toward the object side (-X direction).

24a and 24b are a pair of image blur correction systems.

It is connected and integrated by two arms, and is driven and controlled in the Y-axis and Z-axis directions by one actuator 30. @ 25 a * 25 b is a pair of third reflection parts, and 2 reflection fi 28 It is made up of a right angle prism having a pair of second reflecting portions 22a and 26b, and reflects l pairs of light beams in the XY plane that have been reflected by a pair of second reflecting portions 22a and 22b perpendicularly in the YZ plane. 27a.

27b (not shown) is a pair of fourth reflection parts, and the reflection surface 31
a and 31b, and reflects a pair of light beams reflected from a pair of third reflecting portions 25a and 25b in a direction parallel to the optical axis of the objective lens, and a pair of eyepiece lenses l.
The light is guided to oa and lOb. Reference numerals 28a and 28b are field frames in which an observation image is formed by a pair of objective lenses.

In this embodiment, when the binoculars blur, it is detected by the blur detection means as described above, and based on the output signal from the blur detection means! Image blur correction system 24a is a pair of electrocouples arranged at a position where the pair of light beams are close to each other.

24b is driven and controlled in the Y-axis direction and the Z-axis direction by one actuator to correct the shaking of the heavy machinery a.

In this embodiment, the image blur correction system (24a, 24b) is connected to the fourth reflection section (27a, 27b) and the field mask (28a, 2
8b), or the third reflecting part (25a
, 25b) and the fourth reflecting section (27a, 27b) may be constructed from reflecting mirrors, and the image blur correction system may be arranged between these elements.

In this embodiment, the image blur correction system (24a, 24b) can be treated as a part of a pair of objective lenses, and a part of the lens group of the objective lens can be treated as the image blur correction system 1.

(Effects of the Invention) According to the present invention, a pair of light beams passing through a pair of objective lenses in binoculars with high magnification, high resolution, and a bright, large-diameter pair of objective lenses that tend to have a wide distance between the optical axes. The reflection members are used to reflect the beams in the direction toward each other, and a reflection section as a vibration proof stage, an image blur correction system, etc. are placed at the position where the two pairs of light beams approach each other, and these two! By driving the element eccentrically with one actuator, it is possible to simultaneously control the deflection of one pair of light beams, making it possible to maintain the parallelism of a pair of optical axes, which must be precisely aligned, with high precision. In addition, it is possible to achieve binoculars having a vibration isolating means that requires only a small number of actuators and can simplify and downsize the entire vibration isolating means for image blur correction.

Furthermore, according to the present invention, the entire vibration isolating means can be miniaturized and attached to binoculars, so even binoculars with a small diameter can be used.
It has the unique feature of allowing a wide distance between the optical axes of the pair of objective lenses, allowing for three-dimensional observation.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the main parts of the optical system according to the 1% embodiment of the present invention, and Figs. 2 (A) and (B) are a plan view and main parts of the optical system according to the second embodiment of the present invention. FIG. In the figure, 1a and lb are objective lenses, 2a and 2b are first reflection parts, 3a, 3b, 23a, and 23b are second reflection parts, 4.29
is arm, 5.7.30 is 7ri f, L-tar, 6.25
a, 25b are third reflecting parts, 8.27a, 27b are fourth reflecting parts, 9a, 9b are rhombic prisms, LOA, JOB are tangent lenses, 11a, 11b are the front group of the objective lens, 21a
, 21b is the rear group of the objective lens, 24a, 24t) are image blur compensation +E systems, and 28a, 28b are field frames.

Claims (3)

[Claims] (1) Object image formed by a pair of objective lenses
Binoculars for observation with a pair of eyepieces, a pair of first reflecting parts fixed to the binocular body are provided behind the pair of objective lenses or a part of the lens group, 1st
A pair of light beams that have passed through the pair of objective lenses are reflected in a reflection part so as to approach each other, and are driven and controlled by one driving means at a position where the pair of light beams approach each other. An anti-vibration means is provided, and the pair of anti-vibration means deflects the pair of light beams according to vibrations or blurring of the binoculars, and then guides the light to the eyepiece to correct blur in the observed image. Binoculars having anti-vibration means, characterized in that: (2) Object image formed by a pair of objective lenses
Binoculars for observation with a pair of eyepieces, in which a pair of light beams passing through the pair of objective lenses are reflected in a direction approaching each other by a pair of first reflecting parts, and the reflected pair of light beams are A pair of integrated second reflectors reflect the light toward the object,
A direction perpendicular to a plane formed by the pair of light beams reflected by the pair of second reflection parts and the light beams incident on the pair of first reflection parts at the third reflection part and the reflected light beams. When the light is reflected by the second reflecting part and the third reflecting part or the fourth reflecting part, the second reflecting part and the third reflecting part or the fourth
1. Binoculars having anti-vibration means, characterized in that blur in an observed image is corrected by eccentrically driving one of the reflecting parts in response to vibrations, blur, etc. of the binoculars. (3) Object image formed by a pair of objective lenses
Binoculars for observation with a pair of eyepieces, wherein a pair of light beams passing through the pair of objective lenses are reflected in a direction approaching each other by a pair of first reflecting parts, and the reflected pair of light beams are is reflected toward the object side by a pair of second reflecting parts, and then the pair of light beams reflected by the pair of second reflecting parts are reflected by a third reflecting part and a fourth reflecting part, and then the eyepiece When guiding the light to the lens, a pair of integrated image blur correction systems are provided at arbitrary positions in the optical path from the pair of second reflection parts to the pair of eyepiece lenses, and the image blur correction system of the pair is provided. Binoculars having anti-vibration means, characterized in that blur in an observed image is corrected by eccentrically driving a correction system in response to vibrations, blur, etc. of the binoculars.