JPH10153740A - Protecting device against sunshine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To protect the eyes in case the sun is seen through a telescope or binoculars, which converges light through lenses. SOLUTION: This protecting device against sunshine, confirms the position of the sun through a photodetecting element group 4 equipped with a wide-angle lens 3 having a wider visual field than the telescope 1 and closes the shutter 6 of the telescope, etc., or diverts the light from the direction to the eye before source light, which is harmful to the eye 2 enters the visual field of the telescope, etc., thereby protecting the eye.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device.

[0002]

2. Description of the Related Art At present, telescopes and binoculars do not have a safety device against sunlight and only take care not to look at the sun.

[0003]

SUMMARY OF THE INVENTION In the event that the sun is seen with a telescope or binoculars that collects light through a lens or the like, eyes are protected.

[0004]

SUMMARY OF THE INVENTION The position of a strong light source is confirmed by a light receiving element group with a wide-angle lens having a wide field of view from a telescope or binoculars. Before entering sight, close the telescope shutter to protect your eyes.

[0005]

【Example】

Embodiment 1 FIG. 1 is an overall configuration diagram of the present apparatus. A lens (FIG. 1) having a wider angle than a telescope (1 in FIG. 1) is provided in front of a light receiving element group (4 in FIG. 2).
3) is fixed so that the optical axis of the telescope (1 in FIG. 1) and the optical axis of the wide-angle lens (3 in FIG. 1) are parallel to each other, so that the light receiving element has a wider field of view than the telescope (1 in FIG. 1). Group (4 in FIG. 2). The sun position calculation device constantly checks the position of the sun. If the position of the sun is x (x in FIG. 4), the shutter (6 in FIG. 1) is opened because it is a safe area (9 in FIG. 4).
If the position of the sun is determined to be within the view of the telescope (1 in FIG. 1) in the danger area (8 in FIG. 4), the shutter (1 in FIG. 1) of the telescope (1 in FIG. 1) of FIG. 1 is closed to protect the eyes. Embodiment 2 FIG. 3 is a configuration diagram of the present apparatus. Light receiving element group (4 in FIG. 3)
A lens (3 in FIG. 3) having a wider angle than the telescope (1 in FIG. 1) is provided in front of the lens so that a field of view wider than the telescope (1 in FIG. 1) enters the light receiving element group (4 in FIG. 3). When the position is obtained by the sun position calculation device and the sun position moving body prediction device determines that it enters the field of view of the telescope (1 in FIG. 1), the telescope shutter control device closes the shutter (6 in FIG. 1) of the telescope to protect the eyes. . Third Embodiment FIG. 5 shows the case of a telescope or the like capable of changing the focus. A lens (3 in FIG. 5) having a wider angle than the telescope (1 in FIG. 1) is provided in front of the light receiving element group (4 in FIG. 5), so that the field of view wider than the telescope (1 in FIG. 1) is obtained. ). The focal length of the telescope (1 in FIG. 1) is obtained from the telescope (1 in FIG. 1), and the safe view changing device changes the safe area (c in FIG. 6) of the telescope on the light receiving element group (4 in FIG. 5). When the position of the sun is obtained by the sun position calculating device and the sun is determined to be in the field of view of the telescope (1 in FIG. 1), the telescope shutter control device controls the shutter of the telescope (1 in FIG. 1) (6 in FIG. 5). Close your eyes to protect. Embodiment 4 FIG. 7 shows the case of a telescope or the like capable of changing the focus. In front of the light receiving element group (4 in FIG. 7), a telescope (3 in FIG. 7) with a wider-angle focus changeable lens than the telescope (1 in FIG. 1) is attached.
1) Make a wider field of view enter the light receiving element group (4 in FIG. 7). The focal length of the telescope (1 in FIG. 1) is obtained from the focal length information output device. The focus changing device is a light receiving element group (FIG. 7)
4) Change the focus of the upper lens (3 in FIG. 7) so that the field of view of the telescope overlaps the dangerous area of the eye (9 in FIG. 4) in the light receiving element group (4 in FIG. 7). . When the position is obtained by the sun position calculating device and it is determined that the sun enters the field of view of the telescope (1 in FIG. 1), the telescope shutter control device closes the shutter (6 in FIG. 7) of the telescope to protect the eyes.

[0006]

According to the present invention, the eyes are protected when the sun is seen by using a telescope or binoculars that collects light with a lens or the like.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram.

FIG. 2 is a configuration diagram of a fixed focus telescope.

FIG. 3 is a configuration diagram including a moving object prediction device.

FIG. 4 is a diagram showing the basic principle.

FIG. 5 is a configuration diagram of a focus changing telescope.

FIG. 6 is a diagram showing a change in an eye safety area.

FIG. 7 is a configuration diagram of a focus changing telescope.

Claims (1)

[Claims] 1. The position of the sun is confirmed by a light receiving element group provided with a wide-angle lens having a wide field of view from the field of view of a telescope or the like, and before a light source that may harm the eyes enters the field of view of the telescope or the like, A device that closes the shutter of a telescope, etc., or allows light to flow in a different direction from the eyes to protect the eyes