摘要:
A semiconductor laser device that is suitable for mass production, that permits an improved wire layout, and that permits miniaturization includes leads disposed through each of two side faces of an insulating frame member so as to run from outside to inside the insulating frame member, an LD and a light-receiving element mounted inside the insulating frame member, and wires laid inside the insulating frame member so as to connect the leads to the electrodes of the LD and the light-receiving element. Inside the insulating frame member, the tip of one lead is extended farther inward than the edge of an element mount portion that faces the tip of another lead that is disposed through the same side face of the insulating frame member.
摘要:
A semiconductor laser device includes a package having a front surface, a rear surface and an outer peripheral surface; a semiconductor laser element and a light receiving element provided on the front surface; a plurality of leads arranged in spaced relation on the front surface as extending outward from the package; and an optical element supported above the front surface with its optical axis perpendicular to the front surface for guiding a laser beam emitted from the semiconductor laser element toward an object and guiding light reflected on the object to the light receiving element; wherein the outer peripheral surface is configured so as to be fitted in a cylindrical hole having an axis parallel to the optical axis of the optical element, and has a recess extending from the front surface to the rear surface, and the leads are bent as extending from the front surface and passing through the recess with distal portions thereof extending along the optical axis of the optical element and with proximal ends thereof electrically connected to the semiconductor laser element and the light receiving element.
摘要:
In a semiconductor laser device, a wiring board (101) has pad patterns on its top surface, on which a block (102) is also mounted. The block (102) has a first mounting surface (113) and a second mounting surface (114), both of which face in an identical direction. The block (102) also has a raising mirror (111) for changing an optical axis of light. On the first mounting surface (113) is mounted a semiconductor laser element (103) which emits laser light (L). On the second mounting surface (114) is mounted a light receiving element (104) which receives reflected light of the laser light (L).
摘要:
An optical pick-up apparatus and a semiconductor laser apparatus which can suppress reduction of optical utilization efficiency for the laser light emitted from the semiconductor laser element. When a laser light which is emitted from a laser element for DVD and whose polarization direction is perpendicular to a direction of a groove of the polarization grating is incident on the polarization grating, the polarization grating does not diffract the laser light and transmits the laser light as zero-order diffraction light. Consequently, all of the laser light emitted from the laser element for DVD can be used for reading information signal of DVD and detecting FES and TES. This enables reduction of optical utilization efficiency arising by diffracting action of a grating used for detecting TES of CD in a conventional optical pick-up apparatus to be suppressed.
摘要:
The present invention provides a semiconductor laser devices of hologram laser type, constructed so that the configuration of the optical elements barely changes even if its package expands due to a rise in temperature or moisture absorption. In the semiconductor laser device, a body frame made of an insulating resin contains a semiconductor laser element, a mirror, a photo-detecting element for reading signals, a mirror-mounting base and a detector-mounting base. Also, a holographic element is mounted on the top of the sidewall of the body frame. The mirror-mounting base and the detector-mounting base are made of a resin, wherein each base is integrally formed with the base plate of the body frame and is separated from the sidewall of the body frame.
摘要:
Silver paste is applied to a stem, and a semiconductor laser chip is mounted onto the stem on which the silver paste has been applied. Next, the semiconductor laser chip mounted on the stem, while kept pressurized toward the stem with a collet, is heated to make the silver paste temporarily cured, by which the semiconductor laser chip is fixed onto the stem. Then, after a temporary curing step, the silver paste is finally cured within a thermostat. The semiconductor laser device thus manufactured is low in thermal resistance and reduced in variations of operating current and prevented from short-circuiting of the semiconductor laser chip.
摘要:
A semiconductor laser device, with which a compact and thin optical pickup can be realized, is provided. On the top surface of a supporting member, there is formed an element mounting area for mounting a series of elements including a semiconductor laser element, and a light detecting element which detects a laser beam emitted from the semiconductor laser element and reflected by a surface of an outside optical disc so as to be re-entered. An optical path from the semiconductor laser element to the surface of the optical disc includes a vertical optical path advancing from the element mounting area of the supporting member in an approximately vertical upward direction. On a pair of right and left opposing ends of the supporting member, arcuate curved outer surfaces are formed, respectively, so as to fit the supporting member into an installation hole, for a semiconductor laser device, having arcuate curved inner surfaces. These curved outer surfaces are formed of arcs having the vertical optical path as the central axes, and are so formed that the curvature radiuses of the right and left arcs are different.
摘要:
A fine pattern of an optical device formed by the Photo-Polymer method has a groove 100, a side wall 100a of which is sloped against a surface of stamper 18. The slope angle θ of the side wall 100a satisfies the following relational expression: Tan−1(4×h×w1−0.2)
摘要翻译:通过光聚合法形成的光学器件的精细图案具有凹槽100,侧壁100a倾斜于压模18的表面。侧壁100a的倾斜角度θ满足以下关系式 :Tan>>> the groove the the the the the the the the the the the the;;;;;;;;;;;;;;;;;;;; 和w 1:由侧壁100a形成的突出部分的顶部的宽度。 在光学装置中形成的毛刺减少,从而提高了光学装置的批量生产率。