Abstract: A method for manufacture of a tip part for an endoscope including providing a camera assembly, an exterior housing including a circumferential wall enclosing a spacing and a distal end wall integral with the circumferential wall and having an opening; inserting a lens barrel of the camera assembly in the spacing so that a distal end of the lens barrel of the camera assembly extends into the opening, and so that an axially extending adhesive spacing is provided between the opening and the lens barrel along a circumference of the lens barrel, a radial extent of the adhesive spacing gradually being reduced in a direction towards the spacing of the exterior housing; injecting an adhesive into the adhesive spacing; and allowing or causing the adhesive to harden so as to adhere the lens barrel to the distal end wall of the exterior housing.

Abstract: A medical endoscope includes a circuit board, on which an image capture device and a LED bare die are mounted. The LED die is attached to the circuit board and electrically connected to a conductor pattern of the circuit board by conductive members. Next, a sealing member is coated onto the circuit board to embed the LED bare and the conducting members therein. The medical endoscope will have smaller size than the prior arts.

Abstract: A medical endoscope includes a circuit board, on which an image capture device and a LED bare die are mounted. The LED die is attached to the circuit board and electrically connected to a conductor pattern of the circuit board by conductive members. Next, a sealing member is coated onto the circuit board to embed the LED bare and the conducting members therein. The medical endoscope will have smaller size than the prior arts.

Abstract: A method for manufacture of a tip part for an endoscope including providing a camera assembly, an exterior housing including a circumferential wall enclosing a spacing and a distal end wall integral with the circumferential wall and having an opening; inserting a lens barrel of the camera assembly in the spacing so that a distal end of the lens barrel of the camera assembly extends into the opening, and so that an axially extending adhesive spacing is provided between the opening and the lens barrel along a circumference of the lens barrel, a radial extent of the adhesive spacing gradually being reduced in a direction towards the spacing of the exterior housing; injecting an adhesive into the adhesive spacing; and allowing or causing the adhesive to harden so as to adhere the lens barrel to the distal end wall of the exterior housing.

Abstract: An endoscope with a T-shaped flexible circuit board includes: a base mounting frame, a flexible circuit, a photosensitive element, two light emitting elements and a camera. The photosensitive element, the two light emitting elements and the camera are mounted onto the T-shaped flexible circuit board, then the flexible circuit board deforms to fit in the base mounting frame. During assembly, the photosensitive element, the two light emitting elements and the camera are maintained in the same orientation, and the T-shaped flexible circuit can be pushed into the base mounting frame simply by applying a force in a single direction parallel to the orientation direction of the photosensitive element, the two light emitting elements and the camera.

Abstract: An endoscope with a flexible circuit board comprises: a base mounting frame, a flexible circuit, a photosensitive element, a plurality of light emitting elements and a camera. The flexible circuit board, the photosensitive element, the light emitting elements and the camera can be mounted on the mounting frame, and then the mounting frame can be assembled in a pipe to form the endoscope, which greatly improves the ease of assembly, and consequently reducing the labor cost required for assembly. Furthermore, the flexibility of the circuit board reduces the volume of the endoscope and improves applicability.

Abstract: An endoscope with a T-shaped flexible circuit board includes: a base mounting frame, a flexible circuit, a photosensitive element, two light emitting elements and a camera. The photosensitive element, the two light emitting elements and the camera are mounted onto the T-shaped flexible circuit board, then the flexible circuit board deforms to fit in the base mounting frame. During assembly, the photosensitive element, the two light emitting elements and the camera are maintained in the same orientation, and the T-shaped flexible circuit can be pushed into the base mounting frame simply by applying a force in a single direction parallel to the orientation direction of the photosensitive element, the two light emitting elements and the camera.

Abstract: An endoscope with a flexible circuit board comprises: a base mounting frame, a flexible circuit, a photosensitive element, a plurality of light emitting elements and a camera. The flexible circuit board, the photosensitive element, the light emitting elements and the camera can be mounted on the mounting frame, and then the mounting frame can be assembled in a pipe to form the endoscope, which greatly improves the ease of assembly, and consequently reducing the labor cost required for assembly. Furthermore, the flexibility of the circuit board reduces the volume of the endoscope and improves applicability.

Abstract: A projection lens has five optical groups, labeled OI to OV, having effective focal lengths fI to fV, respectively. The optical groups move on an optical axis to perform zooming and focussing functions. The projection lens has a total of at least thirteen lenses, which may be labeled L1 to L13, having focal lengths f1 to f13, respectively, Abbe numbers V1 to V13, respectively, and indices of refraction N1 to N13, respectively. Optical group OI has the first three lenses, L1 to L3. Optical group OII , has the next two lenses, L4 and L5. Optical group OIII has the next three lenses, L6 to L8. Optical group LIV has lens L9. Finally, optical group OV has the remaining lenses, L10 to L13, of which L10 to L12 combine to form a triplet. The lens groups satisfy the following conditions: −0.45<(f11/fV)<−0.25 V10+V12−2V11>44 2N11−N10−N12>0.5 0.5<(fN+fP)/(fP)<0.

Abstract: The present invention provides a reflective projection lens set for a digital light processing projector having a digital mirror device transmitting rays of intended and unintended light. The lens set comprises a first and a second mirror. The first mirror has a reflective surface positioned to receive and therefore reflect the rays of intended light. The second mirror has a reflective surface positioned to receive and therefore reflect the rays of intended light reflected from the first mirror, and an opaque surface on the backside positioned to prevent the rays of unintended light from intruding into the path of the rays of intended light.

Abstract: A projector having a projection system includes a reflecting projection unit. The projection system has an image display device and a projection lens, which is provided with an optical axis. The reflecting projection unit includes a first mirror and a second mirror. The first mirror reflects an image from the projection lens according to a predetermined angle. The second mirror receives the image from the first mirror, and reflects it onto a screen. The invention has the advantages of increasing image offset and the zoom ratio of the projector.

Abstract: A projection display device includes a lens module, a light source and an adjusting device. The lens module has a first lens and a second lens. The light source emits light through the first lens and the second lens to a surface. The adjusting device is used to change the distance between the first lens and the second lens, thereby adjusting brightness and uniformity of the projected pictures on the surface.