Abstract: A photo resist layer is used to protect a dielectric layer and conductive elements embedded in the dielectric layer when patterning an etch stop layer underlying the dielectric layer. The photo resist layer may further be used to etch another dielectric layer underlying the etch stop layer, where etching the next dielectric layer exposes a contact, such as a gate contact. The bottom layer can be used to protect the conductive elements embedded in the dielectric layer from a wet etchant used to etch the etch stop layer.

Abstract: A flashlight has a barrel having a front end and a rear end, with a battery disposed inside the barrel. The flashlight also includes a light source disposed at the front end of the barrel, a light source controlling circuit electrically connected with the battery and the light source for controlling the lighting of the light source, a lens assembly provided at the front end of the barrel for capturing an image, and an image processing circuit disposed inside the barrel and electrically connected with the battery and the lens assembly to process and store the captured image. A recharging device can be provided for recharging the battery in the flashlight.

Abstract: A position and adjustment device for a laser module has a cylindrical body having a bore therein, the body having a first plurality of openings and a second plurality of openings that are spaced apart around the body. A laser module is positioned inside the bore. The position and adjustment device also has a plurality of bolts, with each bolt extending through a corresponding one of the first openings into the bore, each bolt having an inner end and a rotating ball provided at the inner end and providing a rolling contact with the external surface of the laser module. The position and adjustment device also has a plurality of biased pins, with each pin extending through a corresponding one of the second plurality of openings into the bore, each pin having a curved inner end that provides a point contact with the external surface of the laser module.

Abstract: A lighting assembly has a light source main body and a light source control module. The light source main body has a light source that generates light. The light source control module includes a power switch, a housing removably coupled to the light source main body, and a modulation circuit retained inside the housing. The modulation circuit is electrically connected to the power switch for making the light source flash with a frequency when the power switch is turned on.

Abstract: A position and adjustment device for a laser module has a cylindrical body having a bore therein, the body having a first plurality of openings and a second plurality of openings that are spaced apart around the body. A laser module is positioned inside the bore. The position and adjustment device also has a plurality of bolts, with each bolt extending through a corresponding one of the first openings into the bore, each bolt having an inner end and a rotating ball provided at the inner end and providing a rolling contact with the external surface of the laser module. The position and adjustment device also has a plurality of biased pins, with each pin extending through a corresponding one of the second plurality of openings into the bore, each pin having a curved inner end that provides a point contact with the external surface of the laser module.

Abstract: A holding device is removably attached to the protection bow of a pistol. The holding device has a main body, a fixing portion, an abutting portion that is pivotably coupled to the main body, and an accommodation space defined between the fixing portion and the abutting portion for receiving the protection bow.

Abstract: A holding device is removably attached to the protection bow of a pistol. The holding device has a main body, a fixing portion, an abutting portion that is pivotably coupled to the main body, and an accommodation space defined between the fixing portion and the abutting portion for receiving the protection bow.

Abstract: An illuminable laser sight has a power source, a laser module coupled to the power source, a laser module coupled to the power source and having a laser diode for emitting laser beams, and an adjuster module positioned around the laser module and coupled to the power source, the adjuster module having a front face and a laser light exit formed at the center of the front face and aligned with the laser diode. The laser sight further includes an illuminator module positioned adjacent the front face of the adjuster module, the illuminator module having a plurality of LEDs arranged in an annular manner to define a central bore that is axially aligned with the laser light exit and the laser diode.

Abstract: A fixing rack for use in quickly clipping an accessory on to a pistol has an elastic clipping seat made of an elastic sheet having two opposing sides that are bent upwardly and inwardly to a preset angle. Each side of the elastic sheet has an inwardly-extending flange, and the two flanges defining an opening therebetween that varies in width when the sides are flexed. The fixing rack also includes two releasing plates, each releasing plate attached to one of the two sides of the elastic sheet to flex the two sides. The fixing rack also includes a fixing sheath attached below the clipping seat, the fixing sheath having a chamber for receiving a pistol accessory. The fixing rack can be quickly and conveniently attached to a pistol by flexing the releasing plates to widen the opening between the flanges, thereby allowing the flanges to be slid into corresponding wedging grooves in a pistol.

Abstract: A fixing rack for use in quickly clipping an accessory on to a pistol has an elastic clipping seat made of an elastic sheet having two opposing sides that are bent upwardly and inwardly to a preset angle. Each side of the elastic sheet has an inwardly-extending flange, and the two flanges defining an opening therebetween that varies in width when the sides are flexed. The fixing rack also includes two releasing plates, each releasing plate attached to one of the two sides of the elastic sheet to flex the two sides. The fixing rack also includes a fixing sheath attached below the clipping seat, the fixing sheath having a chamber for receiving a pistol accessory. The fixing rack can be quickly and conveniently attached to a pistol by flexing the releasing plates to widen the opening between the flanges, thereby allowing the flanges to be slid into corresponding wedging grooves in a pistol.

Abstract: A fixture attaches a pistol accessory to a pistol. The fixture has a seat having a holding hole for retaining the pistol accessory, the seat having a generally U-shaped body with two flank sides connected by a bottom surface, and with each flank side having an inner surface and a fixing hole. The seat further includes a sliding track disposed on the inner surface of each flank side, with each sliding track slidable along one of the longitudinal grooves along the bottom edge of the pistol barrel. The fixture also includes a fixing rod extending through the fixing holes in the two flank sides, and an elastic mechanism provided adjacent the bottom surface of the seat and engaging the fixing rod to bias the fixing rod into a transverse groove at the bottom edge of the pistol when the fixture is attached to the pistol.

Abstract: An illuminable laser sight has a power source, a laser module coupled to the power source, a laser module coupled to the power source and having a laser diode for emitting laser beams, and an adjuster module positioned around the laser module and coupled to the power source, the adjuster module having a front face and a laser light exit formed at the center of the front face and aligned with the laser diode. The laser sight further includes an illuminator module positioned adjacent the front face of the adjuster module, the illuminator module having a plurality of LEDs arranged in an annular manner to define a central bore that is axially aligned with the laser light exit and the laser diode.

Abstract: A method of manufacturing a laser module is provided, which includes the steps of providing a one-piece cylindrical housing having a bore, a front window and a rear opening, securing a lens piece in the bore adjacent the front window, introducing a laser diode into the bore through the rear opening, applying a force to the laser diode to insert the laser diode into the bore while simultaneously focusing the lens, and ceasing the application of force when the lens has been accurately focused.