Canon Kabushiki Kaisha

Fujitsu Corporation

Ohtsuka Patent Office

Canon Kabushiki Xaisha

Kenichi Kimura

Takeshi Akiyama

Tsunefumi Tanaka

Makoto Sekita

Keisuke Araki

Norihiro Nanba

Nobuhiro Takeda

Hiroshi Saruwatari

Toshikazu Yanai

Shigeo Ogura

Yoshihiro Uchino

Toshiya Kurihashi

Masamichi Udagawa

Saburo Sugawara

Hisao Morooka

Eiji Nagao

Takanori Kawasaki

Kensuke Iizuka

Akiyo Morishita

Sigi Moeslinger

Takashi Watanabe

Atsushi Okuyama

Sadahiko Tsuji

Hiroyuki Hamano

Toshihiro Sunaga

Hiroyuki Ogino

Yoshifusa Togawa

Fumihito Wachi

Masahiko Tsuzuki

Mitsuhiko Kawami

Harunobu Ichinose

Kazuhiro Fujiwara

Michiharu Aratani

Futoshi Kai

Base station

Personal computer

In a portable electronic apparatus, a second keyboard to be manipulated with a right hand is joined to a first keyboard unit including a first keyboard to be manipulated with a left hand so that the second keyboard can be turned down. A display unit having a built-in liquid crystal display is joined to the first keyboard unit so that the display unit can be tuned down. When the display unit is turned down, the display unit engages with the second keyboard unit that is turned down. When all the parts of the electronic apparatus are closed, the electronic apparatus serves as a CD player of a CD jacket size. When the display unit is opened, the electronic apparatus has not only the capability of a DVD player but also the capability of a simple personal computer. When all the parts are left open, the electronic apparatus serves as a personal computer having a full keyboard.

Portable electronic apparatus

Foldable computer

An optical element comprising an object-side imaging element for imaging an object on an intermediate image plane in an optical path before a final image plane and an image-side imaging element for reimaging an object image formed on the intermediate image plane, on the final image plane, wherein at least one of the object-side imaging element and the image-side imaging element comprises an off-axial curved surface, and wherein aberration is generated by both of the object-side imaging element and the image-side imaging element, thereby flattening (disturbance of) a light intensity distribution caused on the final image plane by a noise source at or near the intermediate image plane.

Optical element and optical apparatus

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

Disclosed is a reflecting optical system in which a beam from an object is incident through an incident surface formed in a surface of a transparent body, the beam is reflected by a reflecting surface of internal reflection comprised of a curved surface provided in a part of the transparent body, and thereafter the beam is emergent from an emergent surface of the transparent body, thereby forming an image, wherein a radius of curvature of the incident surface is set to be nearly equal to a distance from the vertex of the incident surface to the object on a reference axis and wherein a radius of curvature of the emergent surface is set to be nearly equal to a distance from the vertex of the emergent surface to the image on the reference axis.

Reflecting optical system

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 disclosed optical apparatus comprises an optical unit including a light entrance surface, light reflecting surfaces and a light exit surface all of which are integrally formed of transparent material, and the optical unit has in its interior an internal refracting surface for refracting light. Since a light beam passes through the optical unit from the light entrance surface to the light exit surface via the internal refracting surface and the light reflecting surfaces along a bent optical path, the optical apparatus is reduced in size and improved in optical performance, particularly, well corrected in chromatic aberration. Another disclosed optical apparatus is arranged to achieve zooming by using a plurality of optical units each of which is similar to the aforesaid optical unit.

Optical apparatus

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

Growing community of inventors

Kawasaki, Japan

Kenichi Kimura