摘要:
Lens assemblies are described. The lens assemblies are designed to provide beneficial optical characteristics. Some of the assemblies provide a horizontal field of view (HFOV) of approximately 40 degrees. Some of the assemblies provide low distortion, such as less than or equal to approximately 2% distortion for the HFOV. Some of the lens assemblies are also compatible with detectors of small size. Some of the assemblies also have an f-number less than or equal to approximately f/2.0.
摘要:
撮像装置は、1次画像を形成する光学系(210)と、撮像素子(220)と、画像処理装置(240)とを含む。光学系(210)は、物体距離に応じた光学的伝達関数(OTF)の変化を小さくする光波面変調面(213a)を備えたレンズ(213)、もしくは、光波面変調面を持つレンズを含む。光波面変調面(213a)を有するレンズ(213)の焦点距離(f phase )の絶対値が、レンズ(213)を含む光学系(210)全体の焦点距離(f total )の絶対値より大きい。その結果、物体の像が、光学系(210)の焦点距離(f total )に配置された撮像素子(220)において合焦されずに、分散した画像となる。画像処理装置(240)において、撮像素子(220)が撮像した分散画像に対して畳み込み演算を行い、高精細な最終画像を生成する。撮像装置は、情報コードを読み取る情報コード読取装置に適用される。
摘要:
The present invention relates to an optical system (700) for capturing images for an image stitching device, comprising two optical arrangements (710, 720), namely a first optical arrangement (710) and a second optical arrangement (720), wherein each optical arrangement (710, 720) comprises a plurality of lenses (705, 702) including a head lens (704, 701) and an image sensor (706, 703) located on the same optical axis (730, 740),the first optical arrangement (710) and the second optical arrangement (720) are located beside each other and the image sensor (706) of the first optical arrangement (710) is located at the head lens (701) of the second optical arrangement (720) and the image sensor (703) of the second optical arrangement (720) is located at the head lens (704) of the first optical arrangement (710).
摘要:
An objective lens for optical pickup and an optical pickup apparatus having the same are provided. The objective lens for optical pickup includes a light source side lens surface and a disc side lens surface. The light source side lens surface and the disc side lens surface each include an effective region disposed at a central region of the objective lens and a non-effective region disposed outside the effective region. An optical path changing element, disposed in the non-effective region of at least one of the light source side lens surface and the disc side lens surface, changes a path of light incident thereon.
摘要:
The present invention relates to an image projection device having a linear array of LED's in a common substrate, a common lens group to collimate light from each LED, and a single dichroic wedge having dichroic coatings for reflecting each light source to a condensing means which condenses the light to a distal surface. The image projection device therefore provides for a smaller optical package which is more easily accommodated in mobile devices such as mobile telephones, and which is simple and cheap to manufacture.
摘要:
A lens system (100a) including a first substantially hemispherical lens (103), a second spherical lens (101) and a third substantially hemispherical lens (102). The lenses are held together by a bonding material (104,105) such as epoxy, which may also include a light absorbing dye. The invention also relates to a low-cost method of manufacturing the lens system out of glass, using low cost glass ball lenses to create the hemispherical lenses.
摘要:
A lens system including a first substantially hemispherical lens, a second spherical lens and a third substantially hemispherical lens. The lenses are held together by a bonding material such as epoxy, which may also include a light absorbing dye. The invention also relates to a low-cost method of manufacturing the lens system out of glass, using low cost glass ball lenses to create the hemispherical lenses.
摘要:
Eine Vorrichtung zum Überwachen eines Raumbereichs (12) besitzt eine Bildaufnahmeeinheit (16) zum Aufnehmen eines Abbildes des Raumbereichs sowie eine Auswerte- und Steuereinheit (18). Die Auswerte- und Steuereinheit (18) löst in Abhängigkeit von dem Abbild eine Sicherheitsfunktion aus. Die Bildaufnahmeeinheit (16) besitzt eine Abbildungsoptik (22) und einen Bildsensor mit einer Vielzahl von Bildpunkten. Gemäß einem Aspekt der Erfindung besitzt die Abbildungsoptik (22) eine objektseitige vordere Glasfläche und eine Eintrittspupille, die im Bereich der objektseitigen vorderen Glasfläche liegt.
摘要:
Frames comprise odd fields and even fields. The frame sync segments of the odd fields contains a current map specifying the location of data in frames, a next map specifying the location of data in a future frame, and a frame count designating the future frame. The frame sync segments of the even field may contain the same information. Alternatively, the frame sync segments of the odd fields contain the current map and part of the frame count, and the frame sync segments of the corresponding even fields contain the next map and the rest of the frame count. A receiver uses the map and frame count information to find data in the fields of received frames.