JP3036764U - Supine reading mirror - Google Patents

Abstract

(57) [Abstract] [Problem] It is often the case that you want to enjoy reading in a supine position, but for reasons such as holding the book and backlighting it,
The current situation is that there is no other way than lying down. The present invention provides a reading mirror for enjoying reading with a comfortable line of sight, not only in the daytime but also in the back light, while holding the book on the chest. SOLUTION: A reading mirror is devised so that a reflection image is formed into a regular image by two V-shaped reflecting mirrors and a book placed on the chest can be read with a comfortable line of sight in a supine position. By installing a small directional light source on the periphery of the reflector, you can enjoy reading at night without disturbing the surroundings and protecting your eyes from light. By using a concave mirror as the reflecting mirror, it is possible to easily deal with the expansion of the field of view magnification, so it is possible to easily decipher a document using a small print.

Description

[Detailed description of the invention]

[Technical field to which the invention belongs] Optical design technology.

[0001]

2. Description of the Related Art When trying to read a book in a supine position, it was extremely difficult to support the book with both hands, and the illuminance was insufficient for backlighting. It is not practical because the letters can only be seen inside out if a simple reflector is used.

[0002]

[Problems to be solved by the invention] When a book or the like placed on the chest in a supine position is read using a reflecting mirror, the characters and pictures are reversed and it is not practical. This invention solves this problem by combining two reflecting mirrors, and devises the device configuration so that it can simultaneously cope with the lack of illuminance and the magnification correction to increase the reading distance. Solved the problem.

[0003]

[Means for Solving the Problems] Two lightweight reflecting mirrors are formed in a V shape, and are arranged so that the optical paths from a book intersect in the middle. With this arrangement, the angle formed by the optical path and the mirror becomes large when the line of sight is turned upward by approximately 60 degrees in the supine position, and the arrangement interval and size of the mirror can be reduced. The images reflected by these two reflecting mirrors are normal images. Further, if one or two of the reflecting mirrors are constructed by concave mirrors, the magnifying power can be freely adjusted. In addition, by providing a directional light source at the edge of the reflecting mirror, it is possible to illuminate only the book without stimulating the eyes, thus enabling reading in the dark without affecting the surroundings.

The magnification of the optical system can be adjusted by using a flat mirror combined with a Fresnel lens instead of the concave reflecting mirror or by inserting a lightweight convex lens in the optical path.

Further, the reflecting mirrors can be arranged so that the optical paths do not intersect with each other. However, in this case, if the angle formed by the optical path and the reflecting mirror is increased, the distance between the two mirrors increases, and if the distance between the mirrors is decreased, the angle formed between the optical path and the mirror surface decreases. As a result, the utilization efficiency of the mirror surface decreases.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION 1 in FIG. 1 is a first reflecting mirror. 2 is a second reflecting mirror, 3 is a book, and 4 is a viewpoint. Reference numeral 5 is a rotating shaft for adjusting the angle formed by the two reflecting mirrors. Reference numeral 6 denotes a flexible tube-shaped support body, which includes a swivel shaft 7, a column 8 and a base plate 9, which support the reflecting mirror in an adjustable manner.

Reference numeral 15 is a light source for illuminating a book, and 15 is a reflecting mirror that illuminates only the book portion. The first reflecting mirror and the second reflecting mirror can be composed of concave mirrors, whereby the magnified distance to the book can be corrected and an appropriate magnification can be set.

The reflected light from the book is first reflected by the first reflecting mirror and then by the second reflecting mirror. At this point the image is orthonormalized. The reflected light that has been converted to the normal image reaches the viewpoint 4. The light source 4 illuminates only the vicinity of the book, protecting the eyes of the user and preventing the diffusion of light to the surroundings.

Since the direction of the two V-shaped reflecting mirrors can be freely set by the swivel bearing 7 and the reflecting mirror rotating shaft 5, not only the book placed on the chest but also the televisions in the left and right directions, etc. Since it can be seen in a supine position, it has a wide range of applications.

[0010]

EXAMPLE FIG. 2 shows a use situation in a bed. Instead of the support column 8, it is fixed to the frame 16 of the bed. It is intended for use in hotels with low illuminance.

[0011]

[Effects of the device] I want to enjoy reading in a supine position, but because I am tired of holding the book and there are backlit conditions, especially in low-light rooms such as hotels and hospitals, I am in a supine position. Reading is almost impossible, which is a major obstacle to reading "For a sleepless night". By using the assisting device according to the present invention, it is possible to easily read a book written in fine letters with a small lighting not only in the daytime but also at night, so that its utility value is wide. It is useful not only for books placed on the chest, but also for watching TV in the left, right, and foot directions.

[0012]

[Brief description of the drawings]

[Fig. 1] Side view

[Fig. 2] Side view

[Explanation of symbols]

 1 First Reflector 2 Second Reflector 3 Book 4 Viewpoint 5 Reflector Rotation Axis 6 Flexible Tube 7 Slewing Bearing 8 Support 9 Base Plate 10 Light Path 11 Reader's Arm 12 Pillow 13 Illuminating Light Source 14 Converging Mirror 15 Fixture 16 Bed frame

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[Procedure amendment]

[Submission date] November 12, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

Claims (1)

[Utility model registration claims] 1. A reading assistance tool for a supine posture, which is configured to read a book or the like in a supine posture by normalizing the visual field using two flat or curved reflecting mirrors.