Canon Kabushiki Kaisha

Ohtsuka Patent Office

Canon Kabushiki Xaisha

Toshiya Kurihashi

Nobuhiro Takeda

Kenichi Kimura

Toshikazu Yanai

Shigeo Ogura

Yoshihiro Uchino

Takeshi Akiyama

Tsunefumi Tanaka

Norihiro Nanba

Makoto Sekita

Hiroshi Saruwatari

Keisuke Araki

Takao Kinoshita

Hiroyuki Ogino

Kazuhiko Miyahara

Kenichi Kawamoto

Kaneyoshi Tokano

Masahiko Morita

A reflecting-type optical system according to the invention includes an optical element composed of a transparent body having an entrance surface, an exit surface and at least three curved reflecting surfaces of internal reflection. A light beam coming from an object and entering at the entrance surface is reflected from at least one of the reflecting surfaces to form a primary image within the optical element and is, then, made to exit from the exit surface through the remaining reflecting surfaces to form an object image on a predetermined plane. In the optical system, 70% or more of the length of a reference axis in the optical element lies in one plane.

Reflecting type optical system

A reflecting type of zoom optical system comprises a plurality of optical elements each of which includes a transparent body and two refracting surfaces and a plurality of reflecting surfaces formed on the transparent body and is arranged so that a light beam enters the transparent body from one of the two refracting surfaces, repeatedly undergoes reflection by the plurality of reflecting surfaces, and exits from the other of the two refracting surfaces, and/or a plurality of optical elements on each of which a plurality of reflecting surfaces made from surface reflecting mirrors are integrally formed, and each of which is arranged so that an entering light beam repeatedly undergoes reflection by the plurality of reflecting surfaces and exits from the optical element. In the reflecting type of zoom optical system, an image of an object is formed via the plurality of optical elements and zooming is performed by causing at least two optical elements from among the plurality of optical elements to vary their relative positions.

Reflecting type of zoom lens

There is provided an optical apparatus which has excellent assembly performance, can suppress an increase in cost, and attain a decrease in thickness. The optical apparatus includes a board ( ) having a photographing optical system and a mechanical system mounted on its surface. A plurality of opening portions ( ) are formed in the board ( ). The opening portion ( ) is sealed with a sealing member such as a glass member to allow a light beam to pass and prevent dust and the like from entering the storage space for parts between the board ( ) and a shield case ( ). The photographing optical system mounted on the board ( ) includes a stop unit ( ) for adjusting the light amount of an object image guided through the opening portion ( ), and prism-like optical members (G G G G ), each consisting of, e.g., a glass or plastic material and having a sculptured surface as a reflecting surface. Light emerging from the optical member (G ) is received by a solid-state image sensing element ( ) mounted on the lower surface of the board ( ) through the opening portion ( ).

Optical apparatus and image sensing apparatus mounted on the same surface of a board

A memory card adaptor comprising an adaptor main body detachably insertable in a memory card slot of a piece of information equipment; a first connector based on standard specifications, provided on the adaptor main body and adapted to be connected to a connector provided in the memory card slot; a mounting portion provided on the adaptor main body and adapted to detachably receive a memory card which is detachably inserted into a memory card slot of another piece of equipment different from the information equipment, for effecting exchange of information signals in serial data form with the external equipment; and a second connector not based on the standard specifications, provided on the mounting portion and adapted to be connected with a connector provided on the memory card and corresponding to a connector in the memory card slot of the external equipment; wherein exchange of information signals in serial data form is enabled between the information equipment and the memory card by insertion of the adaptor main body, with the memory card mounted in the mounting portion, into the memory card slot of the information equipment.

Memory card adaptor to facilitate upgrades and the like

There is provided an optical apparatus which has excellent assembly performance, can suppress an increase in cost, and attain a decrease in thickness. The optical apparatus includes a board ( ) having a photographing optical system and a mechanical system mounted on its surface. A plurality of opening portions ( ) are formed in the board ( ). The opening portion ( ) is sealed with a sealing member such as a glass member to allow a light beam to pass and prevent dust and the like from entering the storage space for parts between the board ( ) and a shield case ( ). The photographing optical system mounted on the board ( ) includes a stop unit ( ) for adjusting the light amount of an object image guided through the opening portion ( ), and prism-like optical members (G , G , G , G ), each consisting of, e.g., a glass or plastic material and having a sculptured surface as a reflecting surface. Light emerging from the optical member (G ) is received by a solid-state image sensing element ( ) mounted on the lower surface of the board ( ) through the opening portion ( ). The board may be made up of a plurality of base members which are comprised of different materials joined together.

Optical apparatus for forming an object image on a sensing element

A zoom lens comprises a plurality of optical elements each of which includes a transparent body having two refracting surfaces and a plurality of reflecting surfaces and is arranged so that a light beam enters the transparent body from one of the two refracting surfaces, repeatedly undergoes reflection, and exits from the other of the two refracting surfaces, and/or a plurality of optical elements on each of which a plurality of reflecting surfaces made from front surface mirrors are integrally formed, and each of which is arranged so that an entering light beam repeatedly undergoes reflection by the plurality of reflecting surfaces and exits from the optical element. In the zoom lens, the optical element which the light beam from an object enters first has an entrance pupil positioned on an object side of a first reflecting surface, and an image of the object is formed via the plurality of optical elements and zooming is performed by causing at least two optical elements from among the plurality of optical elements to vary their relative positions.

A reflecting-type optical system according to the invention includes an optical element composed of a transparent body having an entrance surface, an exit surface and at least three curved reflecting surfaces of internal reflection. A light beam coming from an object and entering at the entrance surface is reflected from at least one of the reflecting surfaces to form a primary image within the optical element and is, then, made to exit from the exit surface through the remaining reflecting surfaces to form an object image on a predetermined plane, In the optical system, 70% or more of the length of a reference axis in the optical element lies in one plane.

There is provided an optical apparatus which has excellent assembly performance, can suppress an increase in cost, and attain a decrease in thickness. The optical apparatus includes a board (1) having a photographing optical system and a mechanical system mounted on its surface. A plurality of opening portions (1a, 1b, 1c) are formed in the board (1). The opening portion (1a) is sealed with a sealing member such as a glass member to allow a light beam to pass and prevent dust and the like from entering the storage space for parts between the board (1) and a shield case (49). The photographing optical system mounted on the board (1) includes a stop unit (30) for adjusting the light amount of an object image guided through the opening portion (1a), and prism-like optical members (G1, G2, G3, G4), each consisting of, e.g., a glass or plastic material and having a sculptured surface as a reflecting surface. Light emerging from the optical member (G4) is received by a solid-state image sensing element (2) mounted on the lower surface of the board (1) through the opening portion (1c).

Optical apparatus

There is disclosed an apparatus including a guide member for guiding a photographed film, an illumination unit for illuminating the film, a reflection member for reflecting light from the film, a conversion unit for photoelectrically converting light reflected by the reflection member, and a housing which builds in at least the conversion unit and the illumination unit.

Growing community of inventors

Tokyo, Japan

Toshiya Kurihashi